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1 Introduction

With the development of 800V electric vehicle platforms, energy storage PCS, and industrial high-power inverters, 1200V SiC power modules have become core components of efficient power electronic systems.

Compared with traditional IGBT modules, SiC MOSFETs offer the following advantages:

• Higher blocking voltage
  

• Lower switching losses
  

• Higher switching frequency
  

• Higher power density
  

• Lower system cooling requirements
  

Major global SiC module suppliers include:

• Infineon Technologies
  

• ROHM Semiconductor
  

• Wolfspeed
  

• onsemi
  

Meanwhile, Chinese manufacturer RUILIN SEMI, at the request of customers, has also launched a 1200V 800A SiC power module for high-power inverter systems. The performance comparison with international manufacturers is as follows:

2 Typical Applications of 1200V SiC Modules

1200V SiC modules are mainly used in the following systems:

• Electric Vehicle Traction Inverter:
  The power demand for 800V EV platforms typically ranges from 150 kW to 500 kW.
  

• Energy Storage PCS:
  Typical PCS power ratings: 250 kW, 500 kW, 1 MW.
  

• Industrial Motor Drive:
  Power range from 100 kW to 800 kW.
  

• Solar/Wind Inverter:
  High efficiency (>98%).
  

3 Key Selection Parameters

4 1200V SiC Module Market Comparison

Below is a comparison of current mainstream SiC modules:

It can be seen that 800A-class SiC modules are still relatively rare and belong to high-power platform products.

5 RUILIN SEMI 1200V 800A SiC Module Overview

The RL800N1200A SiC power module launched by RUILIN has the following features:

• High Current Capability:
  Rated current 800A, suitable for heavy-duty electric vehicles, high-power PCS, and industrial inverters.
  

• High Efficiency:
  SiC MOSFET technology enables lower switching losses and higher switching frequencies, achieving system efficiency of over 98%.
  

• High Temperature Operation:
  Maximum junction temperature 175°C, providing higher reliability and simpler cooling design.
  

6 System Power Capability

Under 800V DC bus conditions, the system power is approximately:

Therefore, 800A SiC modules are more suitable for:

• Electric Trucks
  

• Hydrogen Trucks
  

• Large-scale Energy Storage PCS
  

7 Package Structure

Common Packages for 1200V SiC Modules:

• Half-Bridge:
  Advantages: Flexible inverter design, easy to parallel.
  

• Six-Pack Package:
  Advantages: Compact inverter system.
  

RUILIN SEMI uses a high-current HPD module structure, suitable for high-power inverter design.

8 Advantages of High-Current SiC Modules

High-current modules offer the following advantages:

• Higher power density:
  Reduces the number of modules required.
  

• Lower system cost:
  Reduces busbars, cooling components, and gate drivers.
  

• Simplified inverter design:
  More compact system.
  

9 Conclusion

With the development of 800V electric vehicles and energy storage systems, 1200V SiC power modules are becoming mainstream power devices.

Compared to traditional 600A modules:

RUILIN SEMI RL800N1200A offers higher current capability and greater system power.

Applications:

• Electric Vehicle Traction Inverter
  

• Energy Storage PCS
  

• Industrial High-Power Drive
  

Technical Core Data

• Parameters:
  Value/Specification
  

• Model:
  RL800N1200A
  

• Blocking Voltage (V
  Decision Support System
  )：1200 V
  

• Continuous Current (I
  D
  )：800 A
  

• On-Resistance R
  DS(on)
  ： 

• Switching Loss (E
  On/Off
  )：Very Low (SiC Technology)
  

• Maximum Junction Temperature T
  j, max
  ： 175 °C
  

• Package:
   HPD, High Current Type
  

• Topology:
   Half Bridge / Configurable
  

• Application:
   EV Traction, Energy Storage PCS, Industrial Drive
  

• System Power (at 800V DC):
   ~640 kW
  

• Advantages:
  Higher power density, lower system cost, simplified design
  

High-current SiC modules will become an important solution for next-generation high-power power electronics systems.
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