This period is to dismantle aHuaweiThe DC power module launched is a square module with a short body design.The front end of the power module is a cooling fan and a DC input terminal, and the rear end is a gold finger.Thick aluminum plates are used on both sides of the module to help internal components dissipate heat.
This power module model is PDC2600S54-E, which supports - 48-60V DC input, input current 57A, output voltage - 54.1V, maximum output current 48.1A, and maximum output power 2600W.Here is the disassembly of this power module. Let's take a look at the internal components and scheme information.
HuaweiThe 2600W DC power module body is designed to be short and thick. The shell is made of all metal materials and is fixed by screw splicing.
The front shell of the fuselage is sprayed with black paint, and the upper part is equipped with a cooling fan, a status indicator and a handle. The lower wiring area is covered with a protective cover.
The fan area is equipped with honeycomb mesh for ventilation and heat dissipation.
Close up of status indicator.
Close up of the handle to facilitate the user to take out the power module.
There is a prompt sticker in the middle of the protective cover in the wiring area, and the two sides are fixed with screws.
The power module nameplate and long conductive cloth are pasted on the top of the machine body.
Close up of power module nameplate
Model: PDC2600S54-E
DC input: - 48-60V;57A
DC output: - 54V48.1A
Total DC output power: 2600W Max
One side of the fuselage is pasted with a prompt label, and the adjacent area is provided with protruding shrapnel.
The other side is provided with a convex spring piece and a concave fixed slide way.
The shell on the same side is also punched for auxiliary heat dissipation.
The bottom of the fuselage is also provided with a long conductive cloth.
The upper and lower output ends are provided with heat dissipation holes.
Close up of the output connector of the power module. The left side is the communication pin, and the right side is the power plug.
The measured length of the power module body is 132.44mm.
The width is 119.73mm.
The thickness is 79.03mm.
The size of the power module in your hand is intuitive.
In addition, the measured weight of the power module is about 1415g.
Read itHuaweiThe appearance of this DC power module is shown. Now we will disassemble it to see the internal materials and scheme information.
First unscrew the fixing screws on the housing and remove the side cover of the module.
Close up of plastic rack used to fix DC input wire.
Below the front panel of the power supply is the input terminal.
The terminal is equipped with two screw holes, which can be flexibly installed according to the left and right incoming directions.
The internal PCB of the module is powered through copper bar connection.
Both sides of the power module are equipped with aluminum plates to increase the heat dissipation area.
A control board is arranged between two PCBs.
The socket on the left side of the control board is connected with the cooling fan.
The connector of the PCB on the other side is connected to the control board.
The PCB is fixed on the aluminum alloy side plate with screws.
PCBs are connected with copper bars and fixed with screws.
Unscrew the screw fixing the side plate, and a heat conduction pad is arranged between the PCB and the aluminum alloy side plate.
Paste yellow high temperature adhesive tape between the heat conduction pad and PCB.
One PCB is used for power input, and copper exposed and tin added at the position corresponding to the power MOS tube to enhance heat dissipation.
The other PCB is welded with synchronous voltage rise and fall switch tube and output VBUS switch tube.
Weld to separate the connection between PCBs and continue disassembly.
The PCB at the power input end is fixed on the terminal of the front panel by screws.
Close up of positive and negative terminals, fixed by screws.
Close up of the cooling fan embedded in the module panel.
The cooling fan can be seen from Delta through the mesh cover.
The front of PCB is welded with MOS tubes, filter capacitors and filter inductors for circuit on-off control.The input end is also welded with fuse and varistor for overcurrent and overvoltage protection.
Copper is exposed and tin is added through the holes at the back corresponding to the MOS tube to enhance the heat dissipation performance.
Close up of input fuse, two in parallel for overcurrent protection.
A patch fuse is connected in series with the varistor.
Two varistors are connected in parallel for surge suppression.
The gas discharge tube is used to absorb the surge to the ground and is insulated with heat shrink tube.
The 5 Ω cement resistor is used to restrain the surge current of power on.
MOS tube for power input control is from STH180N10F3, NMOS, 100V withstand voltage, 3.9m Ω conductivity, and H2PAK-2 package.
The other four MOS tubes of the same model are used for positive input control.
Four 1m Ω current sampling resistors are used to detect the output current.
Close up of six MLCC filter capacitors in parallel.
Six electrolytic capacitors are used for filtering, and filter inductance is set below.
The filter inductance is made of copper tape.
The filter capacitor is from Guimigong, and the specification is 80V390 μ F.
The film filter capacitor is from Faraday electron, and the specification is 0.22 μ F.
Two inductors are welded on the front of the other PCB, the filter capacitor and filter inductor are welded on the right side, and the power socket is located on the lower right corner.
Five MOS tubes on the left side of the back are used for outputting VBUS control, and two groups of 28 MOS tubes on the right side are used for two groups of synchronous voltage rise and fall conversion.
The eight filter capacitors are glued and fixed.
The filter electrolytic capacitor is from Lilong.
The capacitance specification is 470 μ F63V.
Close up of 1210 encapsulated MLCC filter capacitor.
Close up of six MLCC filter capacitors in parallel.
The filter inductance is wound with copper tape, and the bottom is insulated with bakelite board.
Close up of two film filter capacitors.
Close up of MLCC filter capacitor between voltage rise/drop inductance and filter capacitor.
Weld the current detection resistance on the back of PCB, four of which have a resistance value of 1m Ω, and detect two currents respectively.
Close up of the other four current detection resistors for output current detection.
Two magnetic ring inductors are used for synchronous voltage rise and voltage drop conversion. Three wires are wound in parallel and bakelite board is pasted for insulation.
The eight MOS tubes at the input end correspond to two synchronous voltage rise and fall circuits respectively.MOS tube is from Infineon, model BSC070N10NS, NMOS, withstand voltage 100V, conductivity 7m Ω, and is packaged with SuperSO8.
The output MOS tube model is the same.
The six lower tubes on one side have the same model.
Close up of seven MLCC capacitors in parallel.
The input MOS tube is connected in parallel with Schottky diode to improve the conversion efficiency.Schottky diode from Weishi, model SS8PH10, specification 8A 100V, TO277A packaging.
The diodes in parallel at the output end have the same model.
The six lower tubes on the other side have the same model.
Close up of seven MLCC capacitors in parallel.
A close-up of a Schottky diode connected in parallel with the switch tube to improve the conversion efficiency.
The diodes in parallel at the output end have the same model.
The driver chip is from Adeno, silk screen 78, and the actual model is ADP3654. It is a low side dual channel driver and supports 4A output current.
Close up of another drive of the same model.
Close up of the third drive of the same model.
Close up of the fourth drive of the same model.
Solder four half bridge drivers of the same model on the front of PCB, from Texas Instruments, model UCC27201A, which is a half bridge driver with 3A output current and 120V withstand voltage, and integrated bootstrap diode inside the chip.
Close up of the second drive of the same model.
Close up of the third drive of the same model.
Close up of the fourth drive of the same model.
Five Infineon BSC070N10NS MOS tubes are used for output VBUS control.
Three optocouplers are used for isolated communication between power module and external equipment.
I2C interface isolator chip is from Adeno, model ADUM1250, and supports two-way isolated communication.
I2C bus selector is from NXP, model PCA9541.
Close up of the output connector of the power module. The left side is the communication pin, and the right side is the power plug.
The specification of one solid state capacitor is 100 μ F16V.
Close up of working indicator light.
Close up of the socket connected to the fan.
The front of the control board is welded with the main control MCU, isolator chip, relay, current sampling amplifier and transformer.
The back is welded with switch tube, power supply chip, voltage regulator chip, memory and other components.
The main control chip of the power supply is from Texas Instruments, and the screen printed TMS320 980 SPC032PAGT.
Weld two digital isolation chips and a memory under the main control chip.The digital isolation chip is from Adeno, model ADUM3210, used for outgoing communication.Memory model 24C64WP, from STC.
A memory of the same model is soldered on the back of PCB.
One relay is from Omron, model G6K-2F-Y-L.
ADUM3210 digital isolator chip is used for incoming communication.
Two current sensing amplifiers from Texas Instruments, model INA200, are used for current sampling and amplification.
The operational amplifier chip, AD823, is a dual channel rail to rail JFET input operational amplifier from Adeno.
The inverter from Texas Instruments, model SN74LVC04A, is a six way inverter.
Close up of STC LD1117S33 voltage stabilizing chip.
Close up of the connector connected to the power input board.
The operational amplifier chip is from Adeno, screen printed A3A, and the actual model is AD8519, with rail to rail output.
The ANSOME NCP1031 integrated converter is used for auxiliary power supply.
Close up of transformer used together.
The auxiliary power supply chip, NCV3843B from Ansomy, is a high-performance current mode controller.
The switch tube is from Weishi, with the model of SI7450DP, NMOS, withstand voltage of 200V, resistance of 65m Ω and PowerPak SO-8 packaging.
The transformer is covered with a metal shielding shell.
Close up of rectifier diode and filter capacitor.
Two voltage stabilizing chips screen printed PA50, the actual model is LP2951ACDM, from Ansomy, and the output current is 100mA.
Close up of STC LD1117S33 voltage stabilizing chip.
Take a look at all of them and have a family photo.
Disassembly summary of charging head network
The Huawei PDC2600S54-E power module is DC input and DC output. It supports - 48-60V input voltage, - 54.1V output voltage, 48.1A output current, and 2600W calculated output power.The module is of hot plug design. The front end is equipped with terminal blocks and cooling fans, and the rear end is equipped with output connectors.
According to the disassembly of the charging head network, Huawei's power module shell is composed of aluminum alloy side plates and iron plates. The DC input terminal is equipped with fuses, varistors and gas discharge tubes for overvoltage protection.The internal use of Italian French semiconductor switch tube for power control, and use Infineon switch tube for synchronous voltage rise and fall conversion.
The internal chips of the module are all from international first-line manufacturers such as Ansomy, Texas Instruments, Adeno, and Italian French Semiconductor. The internal filter capacitors are from Guimigong and Lilong. The switch tube contacts the side aluminum alloy side plate through the heat conduction pad to enhance heat dissipation.The overall materials of the module are well-known brands, and the workmanship is solid and reliable.