Silicon‑Carbide Power Module / SiC Power Module, Power semiconductor device for inverters and on‑board power supplies to realize power conversion. SiC modules feature high efficiency and high‑temperature resistance, widely adopted in new‑energy vehicles.
Silicon‑carbide MOSFET power‑modules represent next‑generation power‑semiconductor devices for new‑energy vehicles. Comparing with traditional silicon‑based IGBTs, SiC materials feature higher breakdown‑voltage strength, superior thermal conductivity and lower switching loss. These advantages promote 800‑V high‑voltage‑platform development for BEVs, and become core components for traction inverters, on‑board chargers and DC‑DC converters.
Top 10 Global Brands
Infineon Technologies, STMicroelectronics, Rohm Semiconductor, Wolfspeed, Denso, Bosch, ON Semiconductor, Mitsubishi Electric, Semikron, Hitachi. These global power‑semiconductor leaders supply automotive‑grade SiC power‑modules for global EV OEM traction‑inverter projects.
Top 10 Chinese Domestic Brands
BYD Semiconductor, StarSemiconductors, CRRC Times Electric, Silan Microelectronics, Core‑Universe Integration, China Resources Microelectronics, Yangjie Technology, NCE Power, Tyco Tianrun, Hanxin Micro. Domestic vendors realize mass production of SiC power‑modules for Chinese new‑energy‑vehicle platforms, with rapidly growing vehicle‑grade shipment volumes.
Structural Composition
SiC MOSFET power‑module assemblies include SiC MOSFET bare dies, DBC direct‑bonded‑copper ceramic substrate, silver‑sinter die‑attach layers, bonding wires, plastic‑or‑metal housing, high‑current power terminals, built‑in NTC temperature‑sensor and silicone encapsulation gel. Multiple SiC chips are connected in parallel to form high‑current power units for high‑voltage energy conversion.
Application
Power‑semiconductor device for inverters and on‑board power supplies to realize power conversion. SiC modules feature high efficiency and high‑temperature resistance, widely adopted in new‑energy‑vehicle main traction inverters, OBC on‑board chargers and DC‑DC converters, performing DC‑AC inversion to drive traction motors.
Manufacturing Challenges
Critical manufacturing bottlenecks include SiC wafer fabrication and gate‑oxide interface quality control for restraining threshold‑voltage drift. Silver‑sintering packaging process reduces module thermal resistance. DBC ceramic substrates balance high thermal‑conductivity and high‑voltage insulation performance. Multi‑chip parallel current‑sharing control must be strictly managed. Power‑cycle endurance prevents bond‑wire lift‑off under repeated thermal cycling. High dV/dt switching noise needs EMC suppression. High‑voltage insulation safety design is mandatory for vehicle‑grade applications电子工程专….
Required Quality Documents
AEC‑Q101 power‑device qualification report, IATF16949 certification, full‑set PPAP documents, DFMEA / PFMEA risk‑analysis report, power‑cycle endurance test report, thermal‑resistance measurement report, high‑voltage insulation‑withstand test report, switching‑characteristic test report, temperature‑cycling test report, EMC validation report, IMDS material‑data sheet and REACH compliance certificates.
Impact on Vehicle Performance
Power loss of SiC modules directly determines inverter energy‑conversion efficiency. Lower power loss increases vehicle driving range. Large module thermal‑resistance causes excessive junction temperature and triggers vehicle power derating. Catastrophic module failure results in inverter short‑circuit and propulsion‑system shutdown. Reliable SiC power‑modules improve vehicle dynamic response, reduce thermal‑management workload and effectively extend pure‑electric cruising range.