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EliteSiC technology boosts efficiency, power density and long-term reliability for Sineng’s high-power energy storage and solar inverter solutions
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Summary
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onsemi announced a new design win with Sineng Electric, which will feature onsemi’s latest‑generation hybrid power integrated module (PIM) in two utility‑scale renewable energy platforms. The PIM features onsemi’s FS7 insulated‑gate bipolar transistor (IGBT) and EliteSiC technology and will be used in Sineng’s next‑generation 430 kW liquid‑cooled energy storage systems (ESS) and 320 kW utility‑scale solar string inverter. Using onsemi’s technology, the Sineng solutions will deliver improved efficiency, higher power density, lower switching losses and improved thermal performance, advancing performance standards in utility-scale renewable energy applications. In benchmark testing against competing power modules, onsemi’s FS7‑based hybrid PIM delivered a 0.07% efficiency improvement and reduced losses by 225 W in a 320 kW solar inverter configuration.
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News Highlights
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- onsemi secures new design win with Sineng Electric to power its 430 kW liquid-cooled energy storage systems and 320 kW solar inverter
- onsemi’s latest‑generation PIM enables up to a 0.1% efficiency increase, driving a 32% improvement in power‑to‑weight performance at the inverter system level
- The hybrid power integrated module features a high-density F5BP package integrating FS7 insulated-gate bipolar transistors and EliteSiC technology to deliver up to 8% lower power dissipation, 10% lower switching losses, and higher power density
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SCOTTSDALE, Ariz., March 31, 2026 (GLOBE NEWSWIRE) — onsemi announced today that its hybrid power integrated modules (PIMs) will be featured in Sineng Electric’s next-generation 430 kW liquid-cooled string energy storage systems (ESS) and 320 kW utility-scale solar inverter. The design win builds upon the longstanding collaboration between onsemi and Sineng to deliver high-performance, future-ready solutions in the growing renewable energy and AI infrastructure markets.
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Industry-Leading Power Module Technology
At the core of Sineng’s new platforms, 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 energy storage systems (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 320 kW to 350 kW.
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Setting New Standards for Efficiency and Reliability
onsemi’s hybrid F5BP PIMs integrate the company’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 minimizes 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 optimized electrical layout and an innovative baseplate design that enhance thermal management. This combination enables superior system performance and enhanced long-term reliability.
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Compared to previous-generation modules, onsemi’s latest FS7‑based hybrid PIM combines lower switching losses and reduced thermal resistance, enabling the following system‑level improvements in Sineng’s new 430 kW string ESS:
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- A 0.75% increase in round-trip efficiency (RTE), building on module‑level efficiency gains demonstrated in benchmark testing
- 5% reduction in auxiliary power consumption, lowering total operating costs
- Higher power density, reducing the number of required modules and cutting component costs
- Cooler operation under high loads and improved reliability
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