Industrial Power Supply Solutions

Application

Description

Rohm SiC and IGBT solutions for industrial power supplies, motor drives, and welding equipment with superior efficiency and reliability.

Core Advantages

Ultra-low Rds(on) SiC MOSFETs Minimize conduction losses for highest efficiency
Zero reverse recovery SiC SBDs Eliminate switching losses in rectifier applications
Easy gate drive compatibility Works with standard 15V/18V gate drivers
High-speed switching capability Enables compact magnetics and filters
Robust short-circuit withstand Reliable protection for industrial environments
Comprehensive design support Reference designs and FAE guidance available

Recommended Bill of Materials (BOM)

Item Part Number Description Quantity Datasheet
1 SCT3022AL 650V SiC MOSFET for PFC and DC-DC 4 📄 Download
2 SCH2080KE 650V SiC SBD for output rectification 4 📄 Download
3 SCT3080KL 1200V SiC MOSFET for high-voltage stages 2 📄 Download

Applications

SMPS
Motor Drives
Welding Machines
UPS Systems
Induction Heating

Technical Specifications

Power Range
1kW - 500kW+
Input Voltage
200V - 690V AC
Output Voltage
24V - 800V DC
Switching Frequency
20kHz - 100kHz
Efficiency
Up to 97%
Operating Temperature
-40°C to +85°C ambient

Customer Success Stories

Industrial Power Supply Manufacturer

| High-Efficiency SMPS

Challenge

Customer needed higher efficiency and power density for industrial power supply.

Solution

Implemented Rohm SiC MOSFETs and SBDs in PFC and LLC stages.

Results

Welding Equipment Company

| Inverter Welder

Challenge

Customer needed reliable power devices for harsh welding environment.

Solution

Deployed Rohm SiC devices with robust thermal management.

Results

FAE Expert Insights

M

Michael Chen

Senior FAE - Industrial Power

15 years in industrial power electronics

Professional Insights

Rohm SiC devices are transforming industrial power applications. The efficiency gains are substantial - customers typically see 3-5% improvement over IGBT solutions. The easy gate drive is a major advantage; you can use existing gate driver designs without modification. For motor drives, the higher switching frequency enables sine-wave filters with smaller magnetics. For welding, the fast switching improves arc stability. Thermal design is critical - use proper heatsinking and consider forced air for high-power applications.

Key Takeaways

  • SiC provides 3-5% efficiency gain over IGBT in industrial applications
  • Easy gate drive enables quick design migration from silicon
  • Higher switching frequency reduces passive component size
  • Proper thermal design essential for reliability

Recommendations

  • Start with PFC stage for easiest SiC adoption
  • Use thermal simulation for heatsink optimization
  • Implement proper EMI filtering for high-frequency switching

Decision Framework

Industrial Power Solution Selection
Steps:
  1. Define power and voltage requirements
  2. Select SiC MOSFETs based on Rds(on) and voltage rating
  3. Add SiC SBDs for rectification stages
  4. Design thermal management system
  5. Implement gate drive and protection circuits

Ready to Implement This Solution?

Contact our FAE team for design support and quotes

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Frequently Asked Questions

What industrial applications benefit most from Rohm SiC?

Rohm SiC industrial applications: (1) SMPS - Higher efficiency, smaller size. (2) Motor drives - Better control, lower losses. (3) Welding - Improved arc stability. (4) UPS - Higher efficiency, longer battery life. (5) Induction heating - Faster heating, better control. (6) EV charging - High efficiency, compact design. (7) Test equipment - Precise power control. Any industrial application requiring high efficiency and power density benefits from Rohm SiC.

SiC benefits all industrial power applications; highest ROI in high-frequency or high-efficiency requirements.

How do I migrate from IGBT to SiC in existing designs?

IGBT to SiC migration steps: (1) Gate drive - Rohm SiC works with existing 15V/18V drivers. (2) Gate resistor - Reduce for faster switching (start with 50% reduction). (3) Dead time - Reduce to 200-500ns for higher efficiency. (4) Heatsink - May reduce size due to lower losses. (5) EMI - Review filtering due to higher dv/dt. (6) Protection - Adjust overcurrent thresholds. (7) Testing - Validate performance under all conditions. Migration is straightforward with proper attention to switching characteristics.

Rohm SiC is designed for easy migration; start with gate drive compatibility and optimize from there.

What thermal design is needed for industrial SiC applications?

Industrial SiC thermal design: (1) Heatsink - Properly sized for worst-case losses. (2) Interface - High-quality thermal pad or grease. (3) Airflow - Natural or forced convection as needed. (4) Monitoring - NTC thermistor for temperature feedback. (5) Protection - Thermal shutdown at safe limits. (6) Derating - Design for Tj < 125°C for long life. (7) Environment - Consider dust, humidity in industrial settings. Good thermal design ensures reliable 20+ year operation.

Design for Tj < 125°C with proper heatsinking; use thermal simulation for optimization.