Onsemi’s hybrid power integrated modules (PIMs) will be used in Sineng Electric’s next-generation 430kW liquid-cooled string energy storage systems (ESS) and 320kW utility-scale solar inverter.
“Utility‑scale operators are laser‑focused on squeezing more kilowatts from the same footprint while cutting lifecycle costs. By integrating onsemi’s F5BP package hybrid modules into our 430 kW ESS and 320 kW inverter platforms, we’re addressing two industry imperatives at once: higher power density that uplifts system ratings, and conversion efficiency gains that compound at gigawatt scale. Those incremental improvements translate into real savings for product development and a more stable, dispatchable renewable grid,” said Jianfeng Sun, General Manager of Research and Development, Sineng Electric.
Onsemi’s latest-generation Field Stop (FS7) insulated-gate bipolar transistor (IGBT) and silicon carbide (SiC) hybrid PIMs in the F5BP package are engineered to boost the power output of utility-scale solar string inverters and ESS. Compared to previous generations, the modules offer 32% increased power density with 0.1% higher efficiency within the same footprint to increase the total system power of a solar inverter from 320kW to 350kW.
The hybrid F5BP PIMs integrate Onsemi’s FS7 IGBT and EliteSiC diode technologies, reducing power dissipation by up to 8% and switching losses by 10% compared to previous generations. Their advanced direct bonded copper (DBC) substrate design minimises stray inductance and lowers thermal resistance to the heat sink by 9.3%. Together, the reduction in switching losses and thermal resistance enables up to 32% higher system power at the same weight and density compared to prior‑generation designs. The modules also feature an optimised electrical layout and an innovative baseplate design that enhance thermal management.
“Developers need solutions that fit existing layouts, simplify thermal design and reduce energy losses. By pairing FS7 IGBTs with EliteSiC diodes in our F5BP modules, we deliver higher conversion efficiency and power density without increasing the footprint, enabling significantly higher power ratings at the same system size. This combination allows utility‑scale solar and storage sites to increase output from existing installations, while improving reliability and lowering lifetime operating costs,” said Sravan Vanaparthy, VP & GM of IGBT Power Division at Onsemi.
