onsemi Powers Sineng Electric’s Advanced Solar and Energy Storage Solutions
March 31, 2026 - in a significant announcement today, ON Semiconductor Corp (onsemi) unveiled that its cutting-edge hybrid power integrated modules (PIMs) will be integral to Sineng Electric's next-generation renewable energy solutions, specifically targeting their 430 kW liquid-cooled string energy storage systems (ESS) and the 320 kW utility-scale solar inverter. This collaboration underscores the companies' commitment to delivering high-performance technology in the expanding markets of renewable energy and artificial intelligence infrastructure.
1. Industry-Leading Power Module Technology
At the heart of Sineng’s innovative platforms lies onsemi’s latest Field Stop (FS7) insulated-gate bipolar transistor (IGBT) and silicon carbide (SiC) hybrid PIMs housed in the advanced F5BP package. These state-of-the-art modules are designed to significantly enhance power output for utility-scale solar string inverters and energy storage systems. Notably, improvements achieved through this technology include a 32% increase in power density and a 0.1% efficiency boost within the same physical footprint, allowing the power output of solar inverters to rise from 320 kW to an impressive 350 kW.
2. Setting New Standards for Efficiency and Reliability
The hybrid F5BP PIMs integrate onsemi’s cutting-edge FS7 IGBT and EliteSiC diode technologies, leading to a reduction in power dissipation by as much as 8% and a 10% decrease in switching losses compared to previous models. The innovative design features such as a direct bonded copper (DBC) substrate significantly minimize stray inductance and reduce thermal resistance to the heat sink by 9.3%.
These enhancements contribute to an overall system performance improvement, enabling a remarkable 32% higher system power with no increase in weight or density. The modules also boast an optimized electrical layout and a groundbreaking baseplate design, which work together to improve thermal management, thereby enhancing long-term reliability.
The advancements in onsemi’s FS7‑based hybrid PIMs usher in substantial improvements for Sineng’s new 430 kW string ESS, including:
- A 0.75% increase in round-trip efficiency (RTE), building on previous module-level efficiency gains.
- A 5% reduction in auxiliary power consumption, leading to lower total operating costs.
- Increased power density, resulting in a decrease in the number of required modules and overall component costs.
- Cooler operation under high loads, which translates to improved reliability.
3. Enabling a More Stable and Reliable Renewable Grid
Jianfeng Sun, General Manager of Research and Development at Sineng Electric, emphasized the importance of onsemi’s technology in meeting industry demands: “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.”
Sravan Vanaparthy, VP & GM of the IGBT Power Division at onsemi, added: “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.”
4. Conclusion
The collaboration between onsemi and Sineng Electric marks a pivotal step forward in the renewable energy sector, showcasing how advanced technologies can lead to increased efficiency and reliability. As the demand for sustainable energy solutions continues to rise, innovations such as onsemi’s hybrid PIMs will play a crucial role in shaping the future of energy production and storage.
For more information on onsemi's product offerings, including their hybrid modules, prospective customers and partners can explore their dedicated product pages and solution guides.
