Features of the 4th Generation SiC MOSFET

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Features of the 4th Generation SiC MOSFET [Copy link]

Features of the 4th Generation SiC MOSFET

Effects of using 4th-generation SiC MOSFETs in step-down DC-DC converters

1. Circuit working principle and loss analysis

2. DC-DC converter actual machine verification

Effects of using 4th-generation SiC MOSFETs in EV applications

1. EV Applications

2. Install the traction inverter and conduct a simulated driving test

3. Totem Pole PFC Real Machine Evaluation

Improved short-circuit withstand time and lower on-resistance

The 4th generation SiC MOSFET has improved the short-circuit withstand time required for applications such as EV traction inverters by further improving ROHM's original dual trench structure, and has reduced the on-resistance by about 40% compared to the 3rd generation SiC MOSFET. The on-resistance of the 4th generation SiC MOSFET is the industry's lowest* class on-resistance.

Significantly reduce parasitic capacitance and lower switching loss

By significantly reducing the gate-drain capacitance (CGD), we succeeded in reducing switching losses by approximately 50% compared to the third-generation SiC MOSFET.

Supporting 15V gate-source voltage drive makes the design of application products easier

The 4th generation SiC MOSFET reduces the gate-source voltage VGS used to drive the MOSFET to 15 V. By the 3rd generation SiC MOSFET, the gate-source voltage VGS was 18 V, while the 4th generation supports 15 V drive, which will make the design of application products easier.

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Application example: Main drive inverter

It helps to achieve significant miniaturization and lower power consumption in various application products including automotive inverters and various switching power supplies. For example, when used in an on-board main drive inverter, the efficiency can be significantly improved compared to when using IGBTs, mainly reflected in the high torque and low speed range of the inverter, thereby reducing power consumption by 6% (calculated according to the international standard "WLTC fuel consumption test").