April 23, 2025 /SemiMedia/ — ROHM has launched a new series of highly integrated silicon carbide (SiC) molded power modules in HSDIP20 packages, designed to optimize power factor correction (PFC) and LLC converters in electric vehicle onboard chargers (OBCs). The lineup includes 13 models across 750V and 1200V classes, combining key power conversion circuits into compact 4-in-1 and 6-in-1 modules.

Driven by the global push toward vehicle electrification, OBC systems are evolving to deliver higher output and efficiency, supported by increasing battery voltages. However, achieving greater power density and effective thermal management in limited space remains a critical challenge. ROHM’s HSDIP20 solution directly addresses this by replacing discrete configurations with compact, high-performance modules.

The HSDIP20 integrates an insulating substrate with excellent thermal conductivity to reduce chip temperature during high-power operation. Comparative testing revealed that ROHM’s 6-in-1 module operates approximately 38°C cooler than a conventional six-discrete SiC MOSFET setup with top-side cooling under 25W conditions.

This enhanced thermal profile allows for high current capacity in a small footprint, delivering over three times the power density of top-cooled discrete designs and 1.4 times that of similar DIP-type modules. As a result, designers can reduce the OBC PFC circuit’s mounting area by about 52%, significantly contributing to overall system miniaturization.

The modules are priced at $100 per unit (sample, excluding tax), with volume shipments to OEMs beginning in April 2025.