3kW Power Supply for Electric Scooter Fast Chargers Using SiC MOSFET

In recent years, the growing focus on carbon neutrality has led to increased popularity of electric scooters, driving demand for fast battery charging. This reference design presents a 3kW power supply tailored for fast chargers used with electric scooters.
Design tips on each portion of the circuit, method of operation, and design information such as circuit diagrams and PCB patterns are available, please use them for your design.

Board Appearance
TW092V65C TW092V65C TW092V65C TRS12V65H TRS12V65H TRS12V65H TW027U65C TW027U65C TW027U65C TW027U65C TW027U65C TPW2900ENH TPW2900ENH TPM1R908QM TPW2900ENH TPM1R908QM DCL540C01

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特点

  • Provides appropriate power devices (MOSFET and SiC diode) and digital Isolator totally.
  • Achieving high power density through the adoption of surface-mounted devices (34% improvement compared to our existing design).
  • Total efficiency 94.8% (Vin = 230V at 100% load condition)

说明

Input Power Supply Voltage AC 180V to 264V
Output voltage DC 50V
Output power 3kW
Circuit topology Semi-Bridgeless PFC, Phase-Shift Full-Bridge + Synchronous Rectification, ORing Circuit for Output
Efficiency Curve

设计文档

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设计数据

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*1:实际PCB是在CR8000BD上设计的。其他文件均根据CR8000BD文件制作。

*2:数据是在CR8000BD上生成的。

东芝产品

器件型号 器件目录 搭载部位・数量 说明
Power SiC MOSFETs PFC Circuit・2 N-ch SiC MOSFET, 650 V, 0.092 Ω(typ.)@18 V, DFN 8×8, 3rd Gen.
SiC Schottky barrier diode PFC Circuit・2 650 V/12 A SiC Schottky Barrier Diode, DFN8×8
Power SiC MOSFETs PSFB Circuit・4 N-ch SiC MOSFET, 650 V, 0.027 Ω(typ.)@18 V, TOLL, 3rd Gen.
Power MOSFET (N-ch 150V<VDSS≤250V) PSFB Circuit・12 N-ch MOSFET, 200 V, 0.029 Ω@10V, DSOP Advance, U-MOSⅧ-H
Power MOSFET (N-ch single 60V<VDSS≤150V) ORing Circuit・6 N-ch MOSFET, 80 V, 0.0019 Ω@10V, SOP Advance(E), U-MOSⅩ-H
Standard Digital Isolators PSFB Circuit・1 HIGH SPEED QUAD CHANNEL DIGITAL ISOLATORS, High-speed, 150 Mbps, 5000 Vrms, 16pin SOIC Wide body

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