Electric Vehicle Powertrain

Application

Description

Rohm SiC MOSFETs and modules enable next-generation EV traction inverters with industry-leading efficiency for 400V and 800V systems.

Core Advantages

Industry-leading low Rds(on) minimizes conduction losses

Easy gate drive compatibility reduces design complexity

Mass production proven reliability in automotive

Automotive qualified (AEC-Q101) with full PPAP

Kelvin source packages for fast switching

Comprehensive reference designs available Comprehensive reference designs available

Recommended Bill of Materials (BOM)

Item	Part Number	Description	Quantity	Datasheet
1	SCT3022AL	650V SiC MOSFET for 400V traction inverter	6	📄 Download
2	SCT3080KL	1200V SiC MOSFET for 800V traction inverter	6	📄 Download
3	BM6104FV-CE2	Isolated gate driver for SiC MOSFETs	1	📄 Download

Applications

Traction Inverters

EV Powertrains

Hybrid Vehicles

Technical Specifications

Power Range

50kW - 300kW+

Input Voltage

400V - 800V DC

Switching Frequency

50kHz - 100kHz

Peak Efficiency

>99%

Operating Temperature

-40°C to +175°C

Cooling

Liquid or forced air

Customer Success Stories

Major Japanese OEM

| EV Traction Inverter

Challenge

Customer needed reliable solution for demanding application.

Solution

Implemented comprehensive solution using recommended components.

Results

European EV Startup

| 800V Traction Inverter

Challenge

Customer needed reliable solution for demanding application.

Solution

Implemented comprehensive solution using recommended components.

Results

FAE Expert Insights

Michael Chen

Senior FAE - Automotive

15 years in EV power electronics

Professional Insights

Rohm's SiC MOSFETs are exceptional for EV traction inverters. The SCT3022AL's 22mΩ Rds(on) is industry-leading for 650V devices, enabling 99%+ efficiency. For 800V systems, the SCT3080KL has proven mass production reliability. The easy gate drive compatibility is a major advantage - no special drivers needed. I highly recommend Rohm for automotive applications requiring proven reliability.

Key Takeaways

Industry-leading 22mΩ Rds(on) for 650V devices
Mass production proven in major OEM platforms
Easy gate drive with standard 18V drivers

Recommendations

Start with Rohm reference designs for fastest time to market
Use Kelvin source packages for maximum switching performance
Contact BeiLuo FAE for design review and optimization

Decision Framework

Steps:

Evaluate requirements
Compare solutions
Consult FAE

Ready to Implement This Solution?

Contact our FAE team for design support and quotes

Frequently Asked Questions

What power levels can Rohm EV traction inverters support?

Rohm EV traction inverter power levels: (1) Compact EVs - 50-100kW using discrete devices like SCT3022AL. (2) Mid-size EVs - 100-200kW with SCT3080KL or parallel configurations. (3) Full-size EVs - 200-300kW using BSM300D12P2E001 modules. (4) Performance EVs - 300kW+ with parallel modules. (5) Voltage - 400V and 800V battery systems supported. (6) Efficiency - 98-99% achievable across all power levels. (7) Scalability - Modular designs allow easy power scaling. Rohm solutions cover the full range of EV applications.

Select discrete devices for <150kW; power modules for >150kW or high-volume production.

How does Rohm SiC improve EV range compared to IGBT?

Rohm SiC vs IGBT EV range improvement: (1) Efficiency gain - 2-3% higher inverter efficiency with low Rds(on). (2) Loss reduction - 70% lower switching losses. (3) Range impact - 5-10% improvement in EV range. (4) Battery savings - Smaller battery for same range. (5) Cooling - Reduced cooling system power. (6) Weight - Lighter inverter reduces vehicle weight. (7) Cost - System cost savings offset device cost. Rohm SiC traction inverters maximize EV range.

Rohm SiC provides 5-10% range improvement; essential for premium EVs.

What makes Rohm's easy gate drive a key advantage?

Rohm easy gate drive advantages: (1) Standard drivers - Works with 15V/18V standard drivers. (2) No negative bias - 0V turn-off sufficient. (3) Wide margin - Compatible with most gate drivers. (4) Lower cost - No special driver needed. (5) Faster design - Reduced development time. (6) Flexibility - Easy to source drivers. (7) Reliability - Proven driver compatibility. Rohm's easy gate drive simplifies design and reduces cost.

Use standard 18V gate drivers; no special SiC drivers required.

What thermal management is required for Rohm EV inverters?

Rohm EV traction inverter thermal design: (1) Liquid cooling - Typical for high-power inverters >100kW. (2) Coolant - Water-glycol mixture at 60-70°C. (3) Flow rate - 10-15 L/min for 200kW inverter. (4) Thermal interface - High-performance phase-change material. (5) Heatsink - Optimized cold plate design. (6) Temperature monitoring - NTC sensors in modules. (7) Derating - Design for 150°C maximum junction for automotive reliability. Proper thermal design ensures reliable operation.

Use liquid cooling for inverters >100kW; design for Tj < 150°C for automotive reliability.

Does Rohm provide motor control software for traction inverters?

Yes, Rohm provides motor control resources: (1) Control algorithms - FOC and DTC implementations optimized for SiC. (2) Reference code - Example code for popular MCUs including RH850. (3) PWM strategies - Optimized for SiC high-speed switching. (4) Protection - Overcurrent, overvoltage, overtemperature algorithms. (5) Efficiency optimization - MTPA and flux weakening. (6) Documentation - Application notes and design guides. (7) Support - FAE assistance for customization. Software resources accelerate inverter development.

Start with Rohm reference code; customize for your specific motor and application.

What safety and reliability standards do Rohm EV solutions meet?

Rohm EV safety and reliability: (1) AEC-Q101 - Automotive qualification for all EV devices. (2) IATF 16949 - Automotive quality management system. (3) Functional safety - ISO 26262 support documentation available. (4) PPAP - Full production part approval process. (5) Reliability - >1,000,000 hours MTBF proven in field. (6) Power cycling - 100,000+ cycles capability. (7) Traceability - Full lot traceability for safety. Rohm devices meet the highest automotive standards with mass production proven reliability.

Rohm devices are fully qualified for automotive; all documentation available for safety systems.