Gate Drive for SiC MOSFET Module

In recent years, SiC MOSFET modules have become popular compared to conventional IGBT modules as they have a smaller size and lower loss, which is useful in power conversion applications such as industrial motor drives and railway inverters. This is a gate drive circuit with various protection functions which can safely drive a SiC MOSFET module.
This design uses the TLP5231 pre-driver coupler, which is capable of high-current gate drive with external buffer MOSFETs and has various built-in protection functions to implement the isolated-gate drive of a high-current/high-voltage SiC MOSFET module. It consists of two channels, high-side and low-side, on a 62mm x 100mm board and can be installed on Toshiba dual MOSFET modules.
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.

This is a picture of Gate Drive for SiC MOSFET Module.
Board Appearance
TLP5231 TLP5231 TPC8132 TPC8132 SSM6K804R SSM6K804R SSM6K804R SSM6K804R TCR1HF50B TCR1HF50B SSM3K15AFS SSM3K15AFS 2SC6026MFV 2SC6026MFV TLP5231 TLP5231 TPC8132 TPC8132 SSM6K804R SSM6K804R SSM6K804R SSM6K804R TCR1HF50B TCR1HF50B SSM3K15AFS SSM3K15AFS 2SC6026MFV 2SC6026MFV

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Features

  • Developed an isolated gate driver equipped with various protection functions for high-current / high-voltage SiC MOSFET modules
  • Parameters are set assuming combination with our SiC MOSFET modules (MG400V2YMS3, MG600Q2YMS3, MG250YD2YMS3)
  • Realized in the same size as our SiC MOSFET modules

Description

Power supply voltage for control DC24V
Number of driving channels 2 ch：Low-side, High-side
Gate control signal input 5V CMOS
Gate drive output +20V (Typ.) / -6.7V (Typ.)

Design Documents

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Design Data

Provides circuit data that can be loaded into EDA tools, PCB layout data, and data used in PCB manufacturing. Available in formats from multiple tool vendors. You can freely edit it with your preferred tool.

Used Toshiba Items

Part Number Device Category Portion Usage Description
Photocoupler (photo-IC output) Pre driver・2 Photocoupler (photo-IC output), Power device pre-driver, IOP=+/-2.5 A, 5000 Vrms, SO16L
Power MOSFET (P-ch single) Turn on buffer・2 P-ch MOSFET, -40 V, 0.025 Ω@10V, SOP-8, U-MOSⅥ
Small Low ON resistance MOSFETs Turn off buffer・4 N-ch, MOSFET, 40V, 12A, 18mΩ@4.5V, TSOP6F
Low Dropout (LDO) Linear Voltage Regulator Generates control power supply voltage・4 High voltage, Low quiescent current, Fast load transient CMOS Linear Regulator
Small-signal MOSFET Input signal drive・２ N-ch MOSFET, 30 V, 0.1 A, 3.6 Ω@4V, SOT-416(SSM)
Transistor for low frequency small-signal amplification Fault detection signal output・2 NPN Bipolar Transistor, 50 V, 0.15 A, SOT-723(VESM)

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