Introduction

Megmeet is a high-tech company specializing in power electronics and industrial control technologies. The company focuses on the research and development, production, sales, and service of hardware, software, and system solutions in the field of electrical automation. Its business encompasses custom power supplies, industrial automation, new energy vehicles, rail transit, smart home appliance control systems, precision connectivity, and intelligent equipment.

We have acquired a 15 kW EV charging power module from Megmeet, model MR750-20V. The module features a metal enclosure assembled with screws and affixed with an information label. It operates with a 380 V three-phase AC input and delivers an output voltage range of 250–750 V, an output current of 20 A, and a rated output power of 15 kW. This charging module supports hot-swapping. Fixing screws are located on both sides of the front panel, which also includes a handle and a cooling fan. The panel is equipped with status indicators and a load indicator for operational monitoring. Let’s take it apart to see its internal components and structure.

Product Appearance

The Megmeet MR750-20V charging module features a metal enclosure with an information label affixed on the right side.

AC Input: 380 V\~ 3W+PE

45–65 Hz, 25 A

DC Output: 250–750 V, 20 A

An information label is affixed to the side of the module, indicating the model number as MR750-20V.

Inside the enclosure, mounting posts are provided for securing the module.

The sides are fixed with screws.

Close-up of the screw.

The front panel features cooling fans, a status indicator, and a load status indicator.

A close-up of the operation status indicator and load status indicator.

The cooling fans are located inside the grille.

A close-up of the handle at the bottom.

The rear panel features a DC output terminal, an AC input terminal, and a communication interface.

A close-up of the AC input terminal.

A close-up of the DC output terminal.

A close-up of the DC output terminal.

The length of the module is about 43.5 cm (17.13 inches).

The width is about 24 cm (9.45 inches).

The thickness is about 8 cm (3.15 inches). 

The weight is about 9.2 kg (20.28 pounds).

Teardown

Next, let's take it apart to see its internal components and structure.

First, unscrew the screws and remove the top cover.

Inside the top cover, there is a white Mylar sheet used for insulation.

The interior features a single-layer PCB design, with a small PCB soldered to make efficient use of space. Additionally, a Mylar sheet is used for insulation and isolation between the PCBA module and the metal enclosure.

The communication interface is connected through a connector.

The front panel is also connected via a connector.

Disconnect the connectors, then remove the top cover and front panel.

The front panel features a small indicator PCB and cooling fans.

The cooling fans are connected to the small PCB via connectors.

Remove the small PCB.

The cooling fan is from Minebea, model 08038RC-12R-EU, with a specification of 12V, 2.15A.

The front of the small PCB features an optocoupler, indicator lights, and a shift register.

The back of the small PCB has the corresponding connectors.

The two shift registers are from TI, marked with HC164, model SN74HC164, used for LED display driving, and they come in an SOIC14 package.

Three SMD LEDs are used for power and operation status indication.

Six SMD LEDs are used for load status indication.

A close-up of the three Sharp PC357N optocouplers.

The PCBA module is secured inside the enclosure with screws.

PCBA module has an AC input socket, safety X2 capacitor, fuse, varistor, and common mode choke on the upper left side. Above that, a small PCB with a soft start relay and resistor is soldered. In the middle, there is a PFC inductor small PCB. A heatsink for the PFC MOSFET and rectifier is on the upper right.

On the right middle, there are four electrolytic capacitors. A heatsink for the LLC MOSFET is at the lower right. To the left of the heatsink are a resonant inductor and capacitor. Four transformers are in the middle. The lower left has a DC output socket and a solid capacitor. Below the filter capacitors, a heatsink cools the output rectifiers.

The back side has a PFC controller and MCU, along with corresponding isolation optocouplers and driver chips. The PCBA module is supported by adhesive pads, and the solder joints of SMD components near the air inlet are coated with glue for sealing and insulation protection.

A close-up of the AC power input socket.

Three safety X2 capacitors are soldered on a vertical PCB.

The back of the small PCB has no components.

The capacitor is from Faratronic. 5.6μF.

The fuse is insulated by heat-shrinkable tubing. 30A 250V.

A close-up of the other two fuses.

Five varistors are used to absorb overvoltage surges.

The varistors are from CNR, model CNR-20D102K.

A close-up of the gas discharge tube in series with the varistors.

The common mode choke is wound with magnet and insulated wires, and it's also insulated with bakelite.

The safety X2 capacitor is from Faratronic. 4.7μF. 

An overview of the soft start resistor and relay small PCB.

The back of the small PCB has no components.

The relay is from HONGFA, model HF105F-1/012D-1HSF. It is a small, high-power relay with a coil voltage of 12V, featuring a set of normally open contacts with a contact rating of 30A.

The two soft-start resistors in series are insulated by heat-shrinkable tubing.

A close-up of the other set of soft-start resistors.

The two electrolytic capacitors have a specification of 100μF, 16V.

The three operational amplifiers are from TI, model LM2904AV. It is a standard dual op-amp, supporting a 3–30V operating voltage range, and comes in an SOIC8 package.

The input current sensing resistors are 6mΩ, with two resistors connected in parallel.

Three isolation amplifiers are used for input current sampling.

The isolation amplifiers are from BROADCOM, model ACPL-C790-500E. They use opto-coupling technology for isolation, feature differential output, and come in an SSO-8 package. 

A close-up of the voltage comparator used for three-phase current detection.

The voltage comparator is from STMicro, model LM393, and comes in an SO8 package.

A close-up of the three voltage regulator chips that power the isolation amplifiers.

The voltage regulator chips are from DIODES, marked with E78E, model AS78L05. They provide an output voltage of 5V and come in an SOT-89 package.

The PFC boost inductors are soldered on a small PCB and secured with screws.

The PFC boost inductors are connected via terminal posts.

The PFC boost inductors are soldered onto a small PCB.

The back of the small PCB has no components.

The PFC inductors are insulated with bakelite.

The PFC controller is from TI, model TMS320F28033. It features a built-in C2000 32-bit MCU with a clock speed of 60 MHz, 64KB of flash memory, and 20KB of RAM. It comes in a TQFP64 package. 

A close-up of the 1117 voltage regulator chip, with a 5V output.

Another voltage regulator chip is from DIODES, marked with GH17M, model AZ1117H-3.3TRG1. It has an output voltage of 3.3V, an output current of 1A, and comes in an SOT-223 package.

An SMD LED is used for operation indication.

A close-up of the TI LM2904AV dual operational amplifier. 

The other side of the PCBA module also has two LM2904AV dual operational amplifiers.

These four LM2904AV dual operational amplifiers are used for current signal amplification.

A close-up of the LM2904AV dual operational amplifier.

A close-up of the Nexperia 74HC08D AND gate chip. It is a quad 2-input AND gate and comes in an SOIC-14 package.

The Toshiba TLP715 optocoupler is used for isolating the PFC MOSFET driver signals and comes in an SOP6 package.

There are six drivers corresponding to the twelve PFC MOSFETs.

The driver is from Microchip, model TC4424A. It is a dual 3A driver, supporting CMOS and TTL input levels, and comes in an SOIC8 package.

There are PFC MOSFETs and rectifiers on three heat sinks.

The back of the heat sinks has grooves.

On the lower left side, there are four PFC MOSFETs, and on the right side, there are two PFC rectifiers.

The PFC MOSFETs are from Toshiba, model TK62N60W5. They are NMOS type, with a voltage rating of 600V, an Rds(on) of 36mΩ, and are packaged in a TO-247 package.

The PFC rectifiers are from Microchip, model APT60DQ120BG. They are ultra-fast soft recovery diodes with a rating of 1200V, 60A, and come in a TO-247 package.

There are electrolytic capacitors in two sets of heat sinks.

The electrolytic capacitors are from Jianghai, part of the CD294 series. They are rated at 450V, 820μF, and are connected in a 2 parallel and 2 series configuration, resulting in an equivalent rating of 900V, 820μF.

The film capacitor is rated at 1.8μF, 250V.

The other three film capacitors are rated at 0.022μF, 630V.

The three current sensing resistors are connected in parallel and are used for current detection in the full-bridge LLC power stage.

A close-up of the LM393 dual voltage comparator.

The LLC controller is equipped with a metal shielding cover.

After removing the shielding cover, the LLC controller is located inside.

The LLC controller is from Onsemi, model NCP1397A. The chip features a built-in 600V gate driver, supports a switching frequency range of 50-500kHz, and comes in an SO-16 package.

The back of the LLC controller has a shielding plate.

The four drivers are used to drive the isolated transformer.

The drivers are from ADI, model ADP3654. They are dual-channel, high-speed low-side drivers, supporting 4A output current, and come in an SOIC-8-EP package.

The four drivers for the transformer correspond to two sets of full-bridge MOSFETs.

The drive transformers are insulated with tape.

After removing the heat sinks, each of the two heat sinks has four LLC MOSFETs.

The back of the heat sinks also has a grooved design.

The LLC MOSFETs are from Toshiba, model TK62N60W5, which is the same as the PFC MOSFET model.

The resonant inductor is wound with Litz wire and is insulated at the bottom with bakelite.

The resonant capacitors are from Faratronic, with a specification of 0.027μF, 1600V, and five capacitors connected in parallel.

The four transformers have bakelite insulation at the bottom.

The rectifiers are equipped with heat sinks.

The rectifiers are from Microchip, model APT60DQ60BG. They are ultra-fast soft recovery diodes with a rating of 600V, 60A, and come in a TO247 package.

The solid capacitors and discharge resistors are soldered onto a vertical PCB.

The back of the small PCB has no components, and there is a Mylar sheet of insulation between it and the heat sink.

The filter capacitors are from CapXon, with a specification of 150μF, 400V, and a total of six capacitors.

The film capacitors are from Faratronic, with a specification of 900V, 4μF, and are connected in parallel.

The four output discharge resistors are connected in series, with each resistor having a value of 160Ω.

Two 5mΩ current sensing resistors are used for output current detection.

The film capacitor is rated at 900V, 4μF.

The solid capacitors are from Rubycon, with a specification of 400V, 150μF.

A close-up of the filter inductor.

The solid capacitors are from CapXon, with a specification of 150μF, 400V.

The output reverse polarity protection bridge rectifier is equipped with a heat sink.

The bridge rectifier is from VISHAY, model PB3510. It is rated for 35A, 1000V, and comes in a PB package.

The DC output interface has thicker round pins on both sides for positive and negative output, with the thinner pins in the middle used for communication.

The communication line is equipped with a filter inductor.

The film Y capacitors are from Faratronic.

The blue Y capacitors are from Walsin.

The MCU is from STMicro, model STM8S208RBT3. It features an STM8 core, with a clock speed of 24MHz, 128KB of Flash, and 6KB of SRAM. It supports a working temperature range of -40 to 125°C and includes a CAN 2.0 B bus interface. The package is LQFP64.

The clock crystal oscillator has a frequency of 16.00MHz.

This is the voltage regulator chip that powers the MCU.

A close-up of the LM2904AV dual op-amp.

A close-up of the LM393 dual voltage comparator.

The two isolation optocouplers are from BROADCOM, model 6N136, and come in a DIP-8 package.

The CAN bus transceiver is from TI, marked with VP251, model SN65HVD251. It is a high-speed CAN transceiver that complies with the ISO 11898 standard, supports a transmission rate of 1Mbps, and comes in an SOIC8 package.

The auxiliary power chip is from Onsemi, marked with 532, model NCP1253BSN65T1G. It is a current-mode PWM controller with a switching frequency of 65kHz, featuring built-in soft start and slope compensation, and comes in a TSOP-6 package.

The MOSFET is from STMicro, model STFW3N150. It is an NMOS type, with a voltage rating of 1500V, an Rds(on) of 9Ω, and comes in a TO-3PF package.

The transformer uses a PQ20 magnetic core.

The Toshiba TLP781 optocoupler is used for output voltage feedback.

The rectifier is from STMicro, model STTH803D. It is an ultra-fast recovery diode with a rating of 300V, 8A, and comes in a TO-220AC package.

The filter capacitor is from Rubycon, with a specification of 16V, 2200μF.

A close-up of the DIODES AS78L05 voltage regulator chip.

These two filter capacitors are from Rubycon, with a specification of 25V, 100μF.

The filter inductor is wound with magnetic ring.

A close-up of the transformer used to power the isolation driver and isolation amplifier.

The auxiliary power chip is from Onsemi, model UC2845B. It is a high-performance current-mode controller and comes in an SOIC-8 package.

A close-up of the four driver transistors.

The discharge MOSFET is from STMicro, model STD2NK90ZT4. It is an NMOS type, with a voltage rating of 900V, an Rds(on) of 6.5Ω, and comes in a DPAK package.

The Toshiba TLP781 optocoupler is used for feedback control.

A close-up of the LM2904AV dual op-amp.

The op-amp is from Onsemi, model MC33172. It is a single-supply dual op-amp and comes in an SOIC-8 package.

The four TLP781 optocouplers are used for communication between the MCU and the PFC controller.

The TLP781 optocoupler is used for soft start relay control.

A close-up of the rubber pad used to support the PCBA module.

The filter capacitor is from Rubycon, with a specification of 16V, 1500μF.

A close-up of the filter inductor.

A close-up of the reserved communication header pins.

A close-up of the grounding terminal of the PCBA module.

Well, those are all components of the MEGMEET MR750‑20V 15 kW DC Charging Module.

Summary of ChargerLAB

Here is the component list of the MEGMEET MR750‑20V 15 kW DC Charging Module for your convenience.

It supports an output power of 15kW, with a three-phase AC input and an input voltage of 380V. The module's DC output voltage range is 250~750V, and the rated output current is 20A. The front of the charging module is equipped with a grille, while the interior features a cooling fan and status indicators. The rear has connection terminals, simplifying installation and maintenance.

After taking it apart, we found that it uses a metal shell, and the PCBA module is divided into PFC and LLC parts. PFC uses a TI TMS320F28033PAG controller, the LLC controller uses an Onsemi NCP1397A, and the MCU uses an STMicro STM8S208RBT3.

The PFC MOSFET and LLC MOSFET are from Toshiba, while both the PFC rectifier and LLC rectifier are from Microchip. The PFC MOSFET driver is powered by an isolation transformer and controlled by an optocoupler, while the LLC MOSFET is driven using a driver paired with an isolation transformer. The auxiliary power chip is from Onsemi.

Both the front and back of the PCBA module are coated with conformal coating, with glue applied at capacitor and resistor positions to reinforce and seal, enhancing insulation. The safety X2 capacitor, soft start relay, and output capacitors are soldered onto a vertical PCB, making efficient use of space. All components are from well-known brands, combined with multiple protective measures to ensure stable operation even under harsh conditions.

Related Articles：
1. Teardown of Belkin 240W Dual USB-C Braided Cable
2. Teardown of Lenovo Legion 245W GaN Adapter (LA245)
3. Teardown of DJI Original 240W Power Adapter for Mavic 4 Pro (CDX341-240)

If you wanna buy the tester of POWER-Z, you can visit our Amazon store: Click here. 

Introduction 
--------------------------------------------------------------- 
Today, we got a server power supply from Dell. It has passed the 80 PLUS Platinum standard and supports up to 495W. We're curious about the internal components of this power supply. So, let's take it apart and see how it differs from the laptop power adapter.

Bill of materials (BOM) 
------------------------------------------ 
Model: D495E-S0
Fan: Delta FFB0412UHN
Power Measurement IC: ADI 78M6613
Auxiliary Power Supply: Onsemi NCP1236
MOSFET: Infineon SPD06N80C3
MCU: Microchip dsPIC33FJ128GP204
Dual Voltage Comparator: LM393
Digital Isolator: Skyworks Si8641BD

Input Filtering Circuit:
Safety X2 Capacitor: HJC
Varistor: TVR14511
Relay: TE 0JE-SS-112LMH2
Bridge Rectifier: Shindengen D15XB60 

PFC Circuit:
PFC MOSFET: Infineon SPW20N60C3
Electrolytic Capacitor: Rubycon
MCU (PFC MOSFET): Microchip dsPIC33FJ16GS504
Driver (PFC MOSFET): TI UCC27424

Primary Circuit:
Master Control Chip: TI UCC28950
Transformer Driver: TI UCC27424
MOSFET: STMicro STF11NM60ND

Secondary Circuit:
MOSFET: Infineon BSC042NE7NS3 G, Infineon IRFH5250
Electrolytic Capacitor: Rubycon

Related Articles：
1. Teardown of DELL 495W Platinum Server Power Supply (D495E-S0)
2. Teardown of DELL 165W PD3.1 GaN Power Adapter (LA165PM210)
3. Teardown of ASUS ROG Thor 1600W Titanium Power Supply

Introduction

Recently, we disassembled a Dell 165W adapter. And today, we got another product also from Dell, which is a server power supply. It has passed the 80 PLUS Platinum standard. And it supports an output of 12V 41.25A, which is 495W. And it is manufactured by Delta.

It features a light guiding handle for easy access. Now, let's take it apart to see its internal components and design.

Product Appearance

As you can see, it is a very ordinary power supply.

There is an AC socket and a fan on the front. The fan is fixed with screws.

The light guiding handle can be used as an indicator. 

The orange handle near the AC socket is used for quick release.

You can take out the power supply by pressing the two handles.

Its metal case is fixed by screws.

All specs info are printed on this sticker.

Model is D495E-S0. It can support input of 100-240V~50/60Hz 6.5A-3A. And it can support output of +12V⎓41.25A and +12Vsb⎓3A. Manufacturer is Delta. It has passed CE and KC certifications. As mentioned at the beginning, it has passed the 80 PLUS Platinum standard. 

The output end has ventilation for heat dissipation.

Here are the PCB gold fingers.

The length of it is about 20 cm (7.87 inches) (excluding the handles and PCB gold fingers).

The width is about 86 mm (3.39 inches).

And the thickness is about 39 mm (1.54 inches).

The weight is about 921 g (32.49 oz).

Teardown

Next, we will take it apart.

Unscrew the fixing screws and remove the upper case. The PCBA module is insulated by black mylar sheets.

The PCBA module is fixed on the bottom case by screws.

The ground wire is also fixed with screws.

So is the indicator light PCB.

There is a tiny thermal pad paste on the mylar sheets to dissipate heat for a chip on the PCBA.

As mentioned, there is an AC socket and a fan on the input end.

And there are PCB gold fingers on the output end.

The vertical PCB is insulated by a small mylar sheet.

The wires of the fan and indicator light are connected to this vertical PCB.

The power supply wires of the fan are connected to the main PCB.

Disconnect the fan from the PCBA.

There are fuse, safety X2 capacitor, varistor, common mode choke, inductor, capacitor, and transformer.

The power measurement IC, primary master control chip, master control chip for auxiliary power supply, MOSFET, and sampling resistor are on the back.

The fan is from Delta. Model is FFB0412UHN. 12V 0.81A.

The PCB of the indicator light is connected by wire.

Here is the two-color indicator light.

The AC socket has an iron piece that contacts the case for grounding.

Two blue Y capacitors are soldered to the AC socket.

The input wire passes through the toroidal core to suppress high-frequency interference.

And the input wires are soldered on the PCBA.

Two common mode chokes and many blue Y capacitors are at the input end.

The input fuse is insulated via heat-shrinkable tubing.

The safety X2 capacitor is from HJC. 1μF.

The yellow varistor is used for input surge protection. Model is TVR14511.

The NTC thermistor is used to limit the surge current after powering on. 

The relay is from TE. It is used to short circuit the NTC thermistor and improve power conversion efficiency. Model is 0JE-SS-112LMH2. 12V 8A.

One of the common mode chokes is wound with magnet wires, and it's also insulated with bakelite.

Another common mode choke is the same.

The safety X2 capacitor next to it is insulated by tape.

Here is one of the blue Y capacitors.

There are bridge rectifier, PFC MOSFET, filter inductor, and filter capacitor on this side of PCBA.

The bridge rectifier is from Shindengen. Model is D15XB60. 15A 600V.

Here is the PFC boost inductor.

The PFC MOSFET is from Infineon and adopts TO247 package. Model is SPW20N60C3. 650V 190mΩ.

The electrolytic capacitor for input filtering is from Rubycon. 450V 470μF.

The master control chip is from TI. It's a phase-shifted full-bridge controller with synchronous rectification and enhanced wide range resonant zero voltage switching (ZVS) capability. Model is UCC28950.

Two transformers for isolating drive are insulated by tapes.

One of the drivers for transformer is also from TI. Model is UCC27424.

The other driver is the same as the previous one.

The MOSFET is from ST and adopts TO220FP package. Model is STF11NM60ND. 600V 370mΩ.

The other MOSFET is the same.

The power supply adopts a phase-shifted full-bridge design.

Here is one of the current transformers.

There is the other current transformer.

The transformers are connected to the PCBA by copper sheets.

The synchronous rectifier PCB is soldered on the other side. The two MOSFETs are from Infineon and adopt PG-TDSON-8 package. Model is BSC042NE7NS3 G. 75V 4.2mΩ.

The other two MOSFETs are the same model.

The filter inductor for output filtering is wound with magnet wires.

Multiple electrolytic capacitors are soldered on the output end.

This electrolytic capacitor for output filtering is from Rubycon. 16V 2200μF.

Another electrolytic capacitor is the same as the first one.

These two electrolytic capacitors are from Rubycon ZLH series. 16V 470μF.

Three MOSFETs for output control are under the electrolytic capacitors.

Those MOSFETs are all from Infineon and adopt PQFN5 x 6 package. Model is IRFH5250. 25V 1.15mΩ.

The power measurement IC is from ADI, it integrates 4 signal inputs, 22-bit ADC and 32-bit computing unit, as well as 8-bit MPU and 32KB FLASH. Model is 78M6613.

The crystal oscillator below it is 32.768kHz.

The master control chip for auxiliary power supply is from Onsemi. Model is NCP1236.

The MOSFET for auxiliary power is from Infineon and adopts TO252 package. Model is SPD06N80C3. 800V 900mΩ.

There are two MCUs and one digital isolator on the vertical PCB.

One of the MCUs is from Microchip and it is used to drive PFC MOSFET. It integrates 16-bit dsPIC33F CPU, high-speed PWM, ADC, and high-speed comparator. Model is dsPIC33FJ16GS504.

The other MCU is also from Microchip, and It integrates high-performance dsPIC33FJ core. It is used to execute digital filtering algorithms and high-speed precision digital control loops. Model is dsPIC33FJ128GP204.

The TI UCC27424 is used to drive PFC MOSFET.

The dual voltage comparator is used for signal detection. Model is LM393.

The low-power quad channel digital isolator is from Skyworks, and it has a transfer speed of 150Mbps. Model is Si8641BD.

This is the external 16.000MHz crystal oscillator.

The sampling resistor is used to detect the output current. 1mΩ.

Well, those are all components of this server power supply.

Summary of ChargerLAB

The Dell 495W server power supply supports an output of 12V 41.25A. And it also passed 80 PLUS Platinum standard.

Its manufacturer is Delta. And it adopts two MCUs from Microchip. The two master control chips are from TI and Onsemi. Most of the other components are also from well-known manufacturers such as Infineon, Rubycon, and Skyworks.

The components are compactly laid out and the space utilization is excellent. All of which makes its build quality solid.

Related Articles：
1. Teardown of DELL 165W PD3.1 GaN Power Adapter (LA165PM210)
2. Teardown of ASUS ROG Thor 1600W Titanium Power Supply
3. Teardown of 372W Power Supply (For SONY PlayStation 5)

Introduction

Hi, guys. Welcome back to today's ChargerLAB. Recently, we did a teardown video of the Enphase IQ7+ microinverter, you can click the relate articles to check that out. And today, we got our hands on another model - the IQ8X. So without further ado, let's take it apart to check out its internal components.

Product Appearance

It adopts a black plastic shell with a matte design, just like the IQ7+.

All the specs info is printed here. The off-grid power factor range is +/-1, and the grid-tied one is +/-0.85. The maximum continuous AC output is 315VA, and the maximum continuous DC input power is 588W. The operating temperature is -40℃ (-40℉) to 60℃ (140℉) with IP67 ingress protection. It also has passed UL certification.

And they're many irregular protrusions and depressions on the back, corresponding to the internal components.

Flip to this side.

The AC output port is on the left,

and the DC input port is on the right side.

An indicator light is in the middle.

The length of this microinverter is about 21cm (8.27 inches).

The width is about 12cm (4.72 inches).

And the height is about 3cm (1.18 inches).

This is how it looks like on my hand.

And the weight is about 932g (2.05 lb).

Teardown

Now that we have completed our brief introduction of this microinverter, it's time to take it apart and examine its internal components and structure.

Use a spudger to pry along the gap.

Then heat it up with a heat gun.

Remove the case.

It's filled with massive black silicone adhesives for sealing and heat dissipation. 

Clean up the adhesives.

Then, let's introduce the major components.

They are four capacitors on the left, and the inverter transformer is at the top. The low-voltage MOSFET for boosting and the corresponding driver are on the bottom, and two circuits for output filtering and power line communication are on the right.

Take a closer look at the AC input pins.

And here is the indicator light.

Take out the entire module, then you can see a black aluminum heat sink on the back.

And no components on the back.

These four DC capacitors are used for input filtering. They are from Rubycon ZLH series, which are connected in parallel. 80V 1500μF.

This R31 inductor is also used for input filtering.

The master controller marked with 480-00039-01 and P63B11.00A-1E 1932 is from Enphase, which controls the boost and output modulation. In this system, the half-bridge driver manages the DC boost, while the AC modulation is controlled through an isolated driver.

And the external crystal oscillator of the controller is below it. 25MHz.

The 8MB memory is from Winbond. Model is W25Q64JVSSIQ.

This buck chip is from TI, which is a wide voltage input converter that supports 95V input and 350mA output. Model is LM5008.

And those two smaller chips are also from TI. They are synchronous buck converters that support 17V input and 2A output, and adopt SOT23 package. Model is TPS562201.

The dual voltage comparator is from TI, model LM2903, which is used for protection and detection.

Here is another chip customized by Enphase, which can communicate with the power line, and it's marked with 480-00035-01.

These seven MLCC filter capacitors are used for DC input and connected in parallel.

Those four MOSFETs are from AOS and can form an H-bridge for DC input. 80V 2.2mΩ for each one. Model is AON6276.

This 100V half-bridge driver is from MPS, model MP1921A, which is used for low-voltage MOSFET. The chip features an integrated bootstrap diode, allowing independent control of the upper and lower transistors.

Here is the other one.

The big circular inverter transformer is from EPCOS and integrates the output current mutual inductance.

And the output insulated wire goes through it.

The four output modulating MOSFETs marked with 60R102G7 are from Infineon and adopt TOLL package. But the real model is IPT60R102G7. 650V 102mΩ.

The dual-channel isolated driver is from TI, which is used to modulate the drive for MOSFETs. Model is UCC21520A.

And here is another one.

This is a 0.33μF safety X2 capacitor.

And this varistor is from EPCOS SNF14 series, which is used for output overvoltage protection.

This TVS (Transient Voltage Suppressor) is connected in series with a varistor, serving the purpose of overvoltage protection.

The common mode choke is composed of two small parts in red and copper color.

These are two output Y capacitors.

This is another 0.33μF safety X2 capacitor.

The output fuse next to it is from Littelfuse. 3.15A 300V.

Here is another same common mode choke.

And this is yet another 0.33μF safety X2 capacitor.

This little discharge transistor next to it is connected in series with the varistor that prevents overvoltage.

The output varistor is from EPCOS SNF14 series.

These are two output Y capacitors.

The transformer next to it is used to modulate power line communication.

Well, that's all components of this Enphase IQ8X microinverter.

Summary of ChargerLAB

Enphase boasts a diverse range of microinverter products, encompassing not only the grid-tied IQ7 series solar inverters but also the off-grid IQ8 inverters designed for energy storage applications. These inverters are configured through power line communication, allowing for adjustment of various parameters including output voltage. Notably, the IQ8 model is capable of providing inverted output during power outages, thereby catering to energy storage demands.

After taking it apart, we found its internal design is nearly identical to the IQ7+, and the major components are from top-tier brands like EPCOS, TI, Infineon, etc. Besides, the massive silicone adhesives can make it perform great in severe weather. So, in terms of product quality, the IQ8X is just as good as IQ7+.

Related Articles：
1. Teardown of Enphase IQ8X Microinverter (Video)
2. Review of Jackery SolarSaga 200W Portable Solar Panel
3. Teardown of Enphase IQ7+ Microinverter (For Solar Energy)

Introduction

As environmental pollution becomes more and more serious, solar energy, a clean energy source, is becoming the next energy solution, and a microinverter is an essential part of the residential solar system. To better understand it, we will take apart the IQ7+ microinverter from Enphase today to see its components inside.

For those who may not be familiar, Enphase Energy is a globally renowned manufacturer of microinverters. The company was established in 2006 and is best known for its IQ series of microinverters. In addition to microinverters, they have also introduced battery storage systems with built-in inverters. These systems offer 220V AC output, catering to household power needs. Moreover, they support an app-based monitoring system that tracks the generation, storage, and utilization of solar energy in residential systems, effectively providing an all-in-one solution.

Product Appearance

The Enphase IQ7+ microinverter adopts a matte plastic shell, with mounting holes and input/output ports on both sides.

All the specs info are printed on this large sticker. The power factor range is +/-0.8. The maximum continuous DC input is 720W, and the maximum continuous AC output power is 290VA. And the operating temperature is -40℃ (-40℉) to 65℃ (149℉) with IP67 ingress protection. It also has passed CE certification.

There are many irregular protrusions and depressions on the back, corresponding to the internal components.

In addition to the three ports on one side, there is also an indicator light.

The DC input port is on the left side, and the AC output port is on the left. An indicator light is in the middle.

Take a closer look at the indicator light.

The length of this microinverter is about 21cm (8.27 inches).

The width is about 12cm (4.72 inches).

And the height is about 3cm (1.18 inches).

And the weight is about 938g (33.09 oz).

Teardown

Let's open the case and analyze the internal components and structure.

It's covered with massive silicone adhesives.

I mean just look at it!

Next, cleaning it up to reveal the PCB.

This is the pins for DC positive and negative input.

Next, these are the pins for AC output.

Disconnect the pins from the PCB and extract the PCBA module from the casing.

The aluminum heat sinks are on the back of the module to dissipate heat from the boost MOSFET and output modulation MOSFET.

Remove the heat sinks and apply blue thermal silicone adhesives to enhance heat dissipation at the locations corresponding to the boost MOSFET and output modulation MOSFET.

They are four capacitors on the right, and the inverter transformer is at the bottom. The low-voltage MOSFET for boosting and the corresponding driver are on the top.

The backside only contains some solder joints, without any components.

The DC input from solar batteries can be filtered by four electrolytic capacitors. Those capacitors are from Chemi-Con, which are connected in parallel. 63V 3300μF.

And this inductor is also used for input filtering.

This 3mΩ resistor is used to detect the input current.

The master controller marked with 480-00031-01 is from Enphase themselves, which controls the boost and output modulation. It can drive low-voltage side directly and high-voltage side through the isolated driver.

This is the external clock crystal oscillator for the master controller.

And the external memory of the controller is from GigaDevice.

Those two buck chips that power the master controller are from TI.

A buck chip marked with 158D is in here.

This is the indicator light.

Here is another chip customized by Enphase.

Those four MOSFETs are from ON Semiconductor and can form an H-bridge for input converting. 60V 2.4mΩ for each one. Model is NTMFS5C628NL.

This is a 100V half-bridge driver from MPS. It integrates bootstrap diode, which can independently control the upper and lower MOSFETs. Model is MP1921A.

Here is the other one.

Those MLCCs are used for input filtering.

Then this is another set of MLCCs.

The circular inverter transformer is from EPCOS. It integrates the secondary current transformer.

Those four output-modulating MOSFETs marked with IPT60R102G7 are from Infineon and adopt TOLL package. 650V 102mΩ.

And two dual-channel isolated drivers marked with 2S7165B are on two sides of the modulating MOSFETs. They're from Infineon and are used to drive modulating MOSFETs. The real model is 2EDS7165H.

Here is the other one.

These are multiple resistors used for voltage sampling.

The output current transformer is used to detect the output current.

The blue Y capacitor can suppress the interference.

This is a safety X2 capacitor for output filtering.

And the red varistor marked with P175P10C is from Littelfuse.

The common mode choke is composed of two small parts in red and copper color, and they are insulated by yellow tapes

Here is another same common mode choke.

This is a safety X2 capacitor.

The output fuse is from Littelfuse. 3.15A 300V.

This is a discharge transistor that prevents overvoltage.

Another same Littelfuse varistor marked with P175P10C.

Well, that's all components of this Enphase IQ7+ microinverter.

Summary of ChargerLAB

Solar power generation has seamlessly integrated into our daily lives. Modern solar panels now offer output power of several hundred watts, and their foldable, portable designs make them incredibly convenient for usage. They even support charging portable power stations, perfectly aligning with the needs of the average consumer. Enphase's microinverter, in particular, goes a step further by enabling solar cell power input. This input is then inverted into a 220Vac output and connected to the grid, effectively channeling solar energy back into the power grid and thereby alleviating its load.

After taking it apart, we found it adopts many customized components, including master controller, drivers, and MOSFETs. They're from top-tier brands like MPS, ON Semiconductor, Infineon, etc, so it can deal with the harsh outdoor environment easily.

Related Articles：
1. Teardown of Enphase IQ7+ Microinverter (Video)
2. Review of Jackery SolarSaga 200W Portable Solar Panel
3. Anker 757 1500W Portable Power Station (PowerHouse 1229Wh)

Introduction

Last year and this year, we posted two videos of the Microinverter from Enphase, which are IQ8X and IQ7+, respectively, you can click the related article on the bottom to check them out. And today, we got something different - an embedded power optimizer module from SolarEdge. Its output and functionality are configured within the module. Inside, this optimizer utilizes a synchronous buck/boost design, supporting a wide input voltage range. Now, let's delve into the teardown of this SolarEdge 330W Power Optimizer Module to examine its internal components and structure.

Product Appearance

It comes with two input cables to be connected to the solar panels

Those stripes on the plastic case can increase the heat dissipation area.

The words "Optimized by solaredge" are printed on the front cover.

This is the opening used for ventilation.

The front cover is fixed with plastic clips.

And the orange rubber seal is used for dust and water resistance.

There're four ribbons on the back for output.

The sticker shows its model is OPJ300, you can search for more specs info on the official website.

And here is some basic info for this SolarEdge 330W Power Optimizer Module.

Two input cables are connected to the positive and negative side. The junction is protected by a rotatable plastic nut.

The “+” symbol means it’s a positive cable.

And the “-” symbol means it’s a negative cable.

There is a product certification sticker on the side, which shows it has passed CE, TUV and other certifications.

Three 3M double-sided foam tapes are pasted on the back for fixing in different places.

This is the opening with the internal potting filled with thermal compound.

The length of this power optimizer module is about 194.8mm (7.67 inches).

The width is about 144mm (5.67 inches).

And the height is about 29.8mm (1.17 inches).

The length of the positive cable is approximately 1m (3’ 3.37”).

So is the negative one.

This is how it looks like on my hand.

And the weight is about 937.5g (33 oz).

Teardown

Now that we have completed our unboxing and testing of this power optimizer module, it's time to take apart the device and examine its internal components and structure.

First, remove the top cover above four ribbons.

It can switch between pass-through mode and optimization mode.

And this is how it looks like on my pass-through mode and optimization mode.

And then, use the spudger to pry along the gap and remove the back cover.

What impressed us the most is that the internal module is filled with light green potting compound.

An aluminum plate is fixed inside the potting compound to enhance heat dissipation.

And there’s a circle of foam around the edge of the bottom case for sealing.

Take out the entire PCBA module, the other side is also covered with light green potting compound.

Here is the input cable.

Hidden under the potting compound are the fixing screws for the aluminum plate we just mentioned.

Remove all the fixing screws and take out this thick aluminum plate, which can greatly improve the heat dissipation performance.

There are thermal pads on the aluminum plate that make contact with the PCB.

There is exposed copper in the heat-generating area of the PCB for enhanced heat dissipation.

An insulating layer is between the aluminum plate and PCB.

It took us really long to get it cleaned up. Then, we’ll introduce every single component.

First, let's take a look at the front side of the PCBA module. At the bottom, there are two inductors wound with copper strips. On the right side, there is a synchronous buck-boost MOSFET. Above the PCBA, the master control chip and the buck module are soldered. On the right side, you can find the output ends.

Those gold-plated pads on the back can also enhance heat dissipation.

The master control chip marked with LV640304AP0 is from SolarEdge, used for communication and protection. It can output the signal of synchronous buck-boost driver, in which the synchronous buck-boost is driven by two half-bridge drivers.

This is the external 16.0MHz crystal oscillator of the master control chip.

The memory is from Puya, model P25Q40H, which is used to store firmware info.

This is an external buck inductor.

And here is a buck module that powers the master control chip.

Those two half-bridge drivers are from TI, model LM5101AM, which are used to drive the synchronous buck-boost MOSFETs. It can support up to 3A, and withstand voltage is 100V.

Here are two inductors, wound with copper foil.

Those four synchronous buck-boost MOSFETs are all from Infineon, three of which are IRF6646, NMOS, withstand voltage is 80V, and resistance is 7.6mΩ. There is also a IRF6668, NMOS, with a withstand voltage of 80V and a resistance of 12mΩ.

Those are some MLCC filter capacitors.

The Schottky diode at the input end is from STMicroelectronics, model STPS20H100CG, which is used for anti-reverse protection. Withstand voltage is 100V and the current is 20A.

Also, three identical Schottky diodes are soldered next to three ribbons. Here is one of them.

If we get closer, we will find dense holes on the gold-plated pads to speed up heat dissipation.

One last look at all the components of this SolarEdge 330W Power Optimizer Module.

Summary of ChargerLAB

The SolarEdge 330W Power Optimizer Module comes with a 1m (3’ 3.37”) long input cable and performs voltage buck and boost conversion of the solar panel output. This optimization enables the solar panels to achieve their maximum power output, thereby enhancing the overall energy generation and optimizing the solar power system's efficiency. With an output power of 330W, this optimizer supports input voltage ranges of 5-55V/12.5A and output voltage ranges of 5-60V/15A.

To sum it up, by delving into its components and structure, we've uncovered the meticulous design and engineering behind this device. From the attention-grabbing appearance, with heat dissipation features and vibrant stripes, to the practicality of embedded functionality and wide input voltage range, the SolarEdge optimizer module stands out as a great product. The use of light green potting compound, strategically placed thermal pads, and an aluminum plate for enhanced heat dissipation showcases the module's commitment to efficiency and reliability. Moreover, the presence of industry-leading components like the SolarEdge master control chip, TI half-bridge drivers, Infineon synchronous buck-boost MOSFETs, and STMicroelectronics Schottky diodes instills confidence in its performance and longevity. 

Related Articles：
1. Teardown of Enphase IQ8X Microinverter (For Solar Energy)
2. Teardown of Enphase IQ7+ Microinverter (For Solar Energy)
3. Teardown of SolarEdge 330W Power Optimizer Module Embedded Solution (Video)

If you wanna buy the tester of POWER-Z, you can visit our Amazon store: Click here.

Introduction
---------------------------------------------------------------
What we gonna take apart today is an embedded power optimizer module from SolarEdge. It comes with two input cables to be connected to the solar panels. With this power optimizer, it can buck-boost the output voltage of the solar panel to achieve the maximum output power.

Bill of materials (BOM)
------------------------------------------
Model: OPJ300-LV
Master Control Chip: SolarEdge LV640304AP0
Memory: Puya P25Q40H
Half-bridge Driver: TI LM5101AM
Synchronous Buck-boost MOSFET: Infineon IRF6646, Infineon IRF6668
Schottky Diode: STMicroelectronics STPS20H100CG

Related Articles：
1. Teardown of Enphase IQ8X Microinverter (For Solar Energy)
2. Teardown of Enphase IQ7+ Microinverter (For Solar Energy)
3. Review of Jackery SolarSaga 200W Portable Solar Panel

If you wanna buy the tester of POWER-Z, you can visit our Amazon store: Click here.

Introduction
---------------------------------------------------------------
Recently, we did a teardown video of the Enphase IQ7+ microinverter. And today, we got our hands on another model - the IQ8X. So without further ado, let's take it apart to check out its internal components.

Bill of materials (BOM)
------------------------------------------
DC Capacitor: Rubycon
Master Controller: ENPHASE
Memory: Winbond W25Q64JVSSIQ
Buck Chip: TI LM5008
Synchronous Buck Converter: TI TPS562201
Comparator: TI LM2903
Customized Chip: ENPHASE 480-00035-01
MOSFET: AOS AON6276
Driver: MPS MP1921A
MOSFET: Infineon IPT60R102G7
Driver: TI UCC21520A

Related Articles：
1. Teardown of Enphase IQ7+ Microinverter (For Solar Energy)
2. Review of Jackery SolarSaga 200W Portable Solar Panel
3. Anker 757 1500W Portable Power Station (PowerHouse 1229Wh)

You can buy it on Amazon: https://amzn.to/3OHfSFz

If you wanna buy the tester of POWER-Z, you can visit our Amazon store: Click here.

Introduction
---------------------------------------------------------------
As environmental pollution becomes more and more serious. Solar energy, a clean energy source, is becoming the next energy solution. And a microinverter is an essential part of the residential solar system. To better understand it, we will take apart this IQ7+ microinverter from Enphase today to see its components inside.

Bill of materials (BOM)
------------------------------------------
Electrolytic Capacitor: Chemi-Con (63V 3300μF)
Master Controller: ENPHASE 480-00031-01
External Memory: GigaDevice
Buck Chip: Texas Instruments
MOSFET: ON Semiconductor NTMFS5C628NL
MOSFET Driver: MPS MP1921A
Inverter Transformer: EPCOS
Output-modulating MOSFET: Infineon IPT60R102G7
Isolated Driver: Infineon 2EDS7165H
Varistor: Littelfuse P175P10C
Output Fuse: Littelfuse (3.15A 300V)

Related Articles：
1. Another Choice? Upgrade Your iPad With The Cellular Module Prototype
2. Review of Jackery SolarSaga 200W Portable Solar Panel
3. Anker 757 1500W Portable Power Station (PowerHouse 1229Wh)

You can buy it on Amazon: https://amzn.to/3uRjtrk

If you wanna buy the tester of POWER-Z, you can visit our Amazon store: Click here.

Introduction ---------------------------------------------------------------
Hi, guys. Welcome back to today's video.
We've published the teardown video for the power supply of Xbox series X and Playstation 5.
And today, we gonna take apart the final one. The power supply of Xbox series S.
This power supply is only 165W. So, the size is smaller.
Let's take it apart and take a look at what's inside.

Bill of materials (BOM) ------------------------------------------
PFC Boost Controller: NXP TEA19162
Master Control Chip: SH3P0022T
PFC Boost MOSFET: STMicroelectronics STF18N60M2
Rectifier Diode: Lite-On LTTH806LF
Electrolytic Capacitor: Chinsan
LLC Transformer: Chicony
LLC Half-bridge MOSFET: AOS AOD280A60
Synchronous Rectifier: STMicroelectronics STL140N6F7
Optocoupler: Everlight 1019
Synchronous Rectifier Controller: MPS MP6924A

If you wanna buy the tester of POWER-Z, you can visit our Amazon store: Click here.

Introduction ---------------------------------------------------------------
Hi, guys. Welcome to today's video. Just as I said in the previous video.
Today. We gonna tear down the power supply of PlayStation 5. This power supply can support up to 372W and is pretty like a gun. So, let's go ahead and take it apart to see what's inside.

Bill of materials (BOM) ------------------------------------------
Input Capacitor Discharge Chip: PI SC1143DG
Bridge Rectifier: Yangjie
Safety X Capacitor: SUNGHO Electronics
PFC Boost Inductor: Delta
Transformer: Delta
Primary Controller: Delta
Electrolytic Capacitor: Nippon Chemi-Con, Rubycon
PFC Boost MOSFET: STMicroelectronics STF40N60M2
Rectifier Diode: Lite-on LTTH1206DFW
Half-bridge MOSFET: STMicroelectronics STF18N60M2
Optocoupler: Everlight 1013 LLC
Synchronous Rectifier: MPS MP6924A
Synchronous Rectifier: APEC (Advanced Power Electronics) AP6N3R2ALI

If you wanna buy the tester of POWER-Z, you can visit our Amazon store: Click here.

Introduction
---------------------------------------------------------------
Hi, guys. Welcome to today's video.
What we gonna teardown today is the power supply of Microsoft Xbox Series X.
The power supply is integrated into the game console.
And you cannot take it out unless you destroy your Xbox Series X.
Let's see what's inside.

Bill of materials (BOM) ------------------------------------------
Bridge Rectifier: Yangjie
Master Control Chip: MPS HR1211
PFC Boost MOSFET: APEC (Advanced Power Electronics) AP60SL115DI
Rectifier Diode: Lite-on LTTH806SDF
Electrolytic Capacitor: Ltec, SAMXON
Half-bridge MOSFET: STMicroelectronics STD16N50M2
Optocoupler: Everlight 1019
Synchronous Rectifier Controller: MPS MP6924A
Synchronous Rectifier: STMicroelectronics STF140N6F7