onsemi’s Hybrid Power Modules Boost Efficiency and Power Density in Sineng’s New Solar and Energy Storage Systems
Efficiency and Power Density Upgrades Drive Industry Standards
onsemi announced a significant design win with Sineng Electric, introducing its latest-generation hybrid power integrated modules (PIMs) into Sineng’s 430 kW liquid-cooled energy storage systems (ESS) and 320 kW utility-scale solar string inverters. These modules combine onsemi's FS7 insulated-gate bipolar transistor (IGBT) and EliteSiC diode technology in a high-density F5BP package, specifically designed to deliver industry-leading efficiency and power performance.
Key Performance Highlights: Up to 32% Higher Power Density and Lower Losses
onsemi’s hybrid PIMs enable a 32% increase in power-to-weight performance at the inverter system level. Benchmark testing against peer solutions revealed a 0.07% efficiency improvement and a reduction of losses by 225 watts in a 320 kW solar inverter configuration. These advances drive tangible operational benefits for large-scale renewable deployments.
| Feature | Improvement vs. Prior Gen |
|---|---|
| Round-Trip Efficiency (RTE) in 430 kW ESS | +0.75% |
| Power Density | +32% |
| Switching Losses | -10% |
| Power Dissipation | -8% |
| Thermal Resistance to Heat Sink | -9.3% |
| Auxiliary Power Consumption | -5% |
Smaller Footprint, Cooler Operation, Greater Reliability
Thanks to lowered power dissipation and switching losses, Sineng’s platforms can achieve higher output from the same installation footprint—raising the system power of a solar inverter from 320 kW to 350 kW without additional space or cooling demands. The advanced direct bonded copper (DBC) substrate and innovative baseplate design in the F5BP module reduce thermal resistance, keeping the system cooler under demanding loads and extending long-term reliability for utility-scale stakeholders.
Industry Voice: System-Level Efficiency Gains Matter at Scale
Sineng Electric R&D chief Jianfeng Sun notes, "Incremental improvements, such as increased power density and conversion efficiency, compound to deliver substantial cost savings and grid stability at gigawatt scale." These enhancements empower solar and storage operators to extract more energy from existing real estate, simplify system design, and cut total lifecycle costs.
Takeaway: Incremental Advances Unlock New Opportunities for Clean Energy
onsemi’s FS7-based hybrid PIM technology helps utility-scale solar and energy storage operators push the boundaries of power output, efficiency, and cost-effectiveness. Small—but measurable—gains in efficiency and power density translate to greater profitability and sustainability for large-format renewable projects. As advanced module integrations become standard, the operational gap between prior and next-generation systems is poised to widen in favor of those adopting the latest in semiconductor innovation.
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