onsemi Supports Sineng Electric's Advanced Solar and Energy Storage Solutions

News Highlights

• onsemi secures new design win for Sineng Electric's 430 kW liquid-cooled energy storage system and 320 kW solar inverter

• onsemi's latest generation PIM delivers up to 0.1% efficiency improvement and 32% improvement in power output per weight at the inverter system level

• Hybrid PIM in high-density F5BP package integrates FS7 IGBT and EliteSiC technology for up to 8% power loss reduction, 10% switching loss reduction, and high power density

Overview:

onsemi (Nasdaq: ON), a leader in intelligent power and sensing solutions, today announced a new design win with Sineng Electric. The design win will see onsemi's latest generation of intelligent power integrated modules (PIMs) adopted in two utility-scale renewable energy platforms.

The PIMs feature onsemi's FS7 insulated gate bipolar transistors (IGBTs) and EliteSiC technology, and will be used in Sineng's next-generation 430 kW liquid-cooled energy storage system (ESS) and 320 kW utility-scale solar string inverter.

By leveraging onsemi's technology, these Sineng solutions will achieve improved efficiency, higher power density, reduced switching losses, and better thermal performance, further raising the bar for performance in utility-scale renewable energy applications. In benchmark testing against competing power modules, onsemi's FS7-based hybrid PIM achieved 0.07% higher efficiency and 225 W lower losses in a 320 kW solar inverter configuration.

SCOTTSDALE, Ariz. – March 31, 2026 – onsemi today announced that its intelligent power integrated modules (PIMs) have been selected for Sineng Electric's next-generation 430 kW liquid-cooled string energy storage system (ESS) and 320 kW utility-scale solar inverter. This design win further strengthens the long-standing collaboration between onsemi and Sineng, delivering high-performance, future-proof solutions for the growing renewable energy and AI infrastructure markets.

Industry-Leading Power Module Technology

At the heart of Sineng Electric's new platforms are onsemi's latest generation Field Stop (FS7) insulated gate bipolar transistors (IGBTs) and silicon carbide (SiC) hybrid power integrated modules (PIMs) within the F5BP package. These modules are designed to boost the output of utility-scale solar string inverters and energy storage systems (ESS).

Compared to previous generations, they deliver a 32% improvement in power density and a 0.1% improvement in efficiency within the same footprint, enabling the solar inverter's total system output to increase from 320 kW to 350 kW.

Setting New Standards for Efficiency and Reliability

onsemi's hybrid F5BP PIMs integrate FS7 IGBT and EliteSiC diode technology, achieving up to 8% reduction in power losses and 10% reduction in switching losses compared to previous generations.
Additionally, the advanced Direct Bonded Copper (DBC) substrate design minimizes parasitic capacitance and reduces thermal resistance to the heatsink by 9.3%. The combination of reduced switching losses and lower thermal resistance enables up to 32% higher system output within the same weight and density as previous generation designs. Furthermore, optimized electrical layout and an innovative baseplate design enhance thermal management performance. This combination of features delivers superior system performance and long-term reliability.

Compared to previous generation modules, onsemi's latest FS7-based hybrid PIMs enable the following system-level improvements in Sineng's new 430 kW string ESS, thanks to reduced switching losses and improved thermal resistance:

• 0.75% improvement in round-trip efficiency (RTE), based on demonstrated module-level efficiency gains in benchmark testing

• 5% reduction in auxiliary power consumption, lowering overall operating costs

• Reduced bill of materials (BOM) cost due to fewer required modules, enabled by higher power density

• Improved reliability due to lower operating temperatures, even under high load conditions

Enabling a More Stable and Reliable Renewable Energy Grid

“Utility-scale operators are focused on extracting more power from the same footprint while reducing lifecycle costs,” said Jianfeng Sun, General Manager of R&D at Sineng Electric. “By integrating onsemi's F5BP package hybrid modules into our 430 kW ESS and 320 kW inverter platforms, we can simultaneously address two critical challenges: increasing system ratings through high power density and improving conversion efficiency. These cumulative gains contribute to a more stable renewable energy grid.”

“Many developers are looking for solutions that fit into existing layouts, simplify thermal design, and reduce energy losses,” said Sravan Vanaparthy, vice president and general manager, IGBT Power Division at onsemi. “Our F5BP modules, combined with FS7 IGBT and EliteSiC diode technology, enable higher conversion efficiency and power density without increasing the footprint. This allows for higher output from the same system size, delivering significant value in terms of both reliability and lifetime operating costs.”

Additional Information:

Product Pages:
NXH500B100H7F5SHG;
NXH600N105L7F5P2HG;
NXH600N105L7F5S2HG;
NXH600N105L7F5SHG,
Si/SiC Hybrid Modules

Datasheet:
 NXH500B100H7F5SHG

Solution Guides:
 Solar Inverter; Energy Storage

White Papers:
BRD8095 - Overcoming the Challenges of Silicon Carbide to Ensure Application Success

TND6386 - Topologies for Commercial String Solar Inverter