High‑efficiency solar inverter solutions for residential, commercial, and utility systems—enabling higher power density, advanced topologies, and reliable grid‑connected energy conversion.
The continued decline in solar panel costs, together with increasingly stringent global zero‑carbon regulations, is accelerating solar power deployment across residential (<10 kW), commercial (20 kW – 350 kW), and utility‑scale (up to MW‑class) markets. At the core of every photovoltaic (PV) system, the solar inverter converts variable DC energy into grid‑compatible AC power, making efficiency, reliability, and safety critical system requirements. To address these demands at higher power levels, onsemi delivers boost and inverter Power Integrated Modules (PIMs) that simplify system design while improving power density, thermal performance, and manufacturability. These solutions are further enhanced by EliteSiC MOSFETs in T2PAK top‑cooled packages, which enable efficient heat extraction directly to the system heatsink, reduce PCB thermal stress, and support higher switching performance in compact, high‑power inverter architectures. Designed to support global certification requirements, these solar inverter solutions align with key grid‑interconnection, safety, and EMC standards such as UL 1741 SB, IEEE 1547‑2018, IEC 62109‑1/‑2, and IEC 61000‑6‑x.
Across the industrial portfolio, onsemi complements high‑power SiC‑based and IGBT solutions with a broad ecosystem of gate drivers, sensing, control, and peripheral power devices that anchor the grid‑interface electronics. For residential applications, our GaN solutions provide a compact, high‑efficiency option for microinverters, supporting higher switching frequencies and smaller magnetics in space‑constrained, panel‑level designs. Together, these technologies enable scalable, reliable solar inverter platforms that meet evolving grid standards and support long‑lifetime renewable energy systems from residential rooftops to utility‑scale installations.
Advanced top‑side cooled package, T2PAK, enhances thermal performance, switching behavior, and layout flexibility for solar and energy infrastructure designs.
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Unlock next-generation solar inverter performance with the Power Integrated Modules (PIMs) engineered for utility-scale and commercial applications.
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Residential solar solutions featuring advanced power devices and architectures to maximize energy efficiency, system reliability, and cost‑effective home solar performance.
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Learn more about overview of commercial string solar inverter system and mainstream topologies (e.g., I-NPC/T-NPC/A-NPC).
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SiC Modules contain SiC MOSFETs and SiC diodes. The boost modules are used in the DC-DC stages of solar inverters. These modules use SiC MOSFETs and SiC diodes with voltage ratings of 1200V.
A Silicon Carbide (SiC) Module is a power module that operates with Silicon Carbide semiconductors for its switch. The purpose of a SiC power module is the transformation of electrical power through switches to improve system efficiency.
The primary function of SiC Modules is to transform electrical power. Silicon Carbide offers an advantage over silicon because, with less resistance to move away from the source (due to increased efficiency), SiC devices can operate at a higher switching frequency. A SiC based system is also more compact and lightweight than a silicon solution, allowing for smaller designs. Therefore, SiC devices are the ideal solution for situations where you want to increase efficiency and improve your thermal management.
Si/SiC Hybrid Modules contain IGBTs, silicon diodes and SiC diodes. They are used in the DC-AC stages of solar inverters, energy storage systems and uninterruptible power supplies.
Hybrid Si/SiC (Silicon/Silicon Carbide) modules are integrated IGBT power modules with high power density. They have lower switching losses than nonhybrid modules, and they can also work at higher temperatures than other types of semiconductors.
Si/SiC hybrid modules have several uses including being used in high-power applications that need low losses. They may also be used in higher temperature environments than comparable Si modules. For systems requiring high-frequency switching, Si/SiC hybrid modules provide better efficiency.
Our SiC MOSFETs are designed to be fast and rugged and include system benefits from high efficiency to reduced system size and cost. MOSFETs are metal–oxide–semiconductor field-effect transistors with insulated gates. These silicon carbide MOSFETs have a higher blocking voltage and higher thermal conductivity than silicon MOSFETs, despite having similar design elements. SiC power devices also have a lower state resistance and 10 times the breakdown strength of regular silicon. In general, Systems with SiC MOSFETs have better performance and increased efficiency when compared to MOSFETs made with silicon material.
There are many advantages to choosing SiC MOSFETs over silicon MOSFETs, such as higher switching frequencies. High-temperature development is also not a concern when using SiC MOSFET modules because these devices can operate efficiently even in high heat. Additionally, with SiC MOSFETs, you benefit from a more compact product size because all components (inductors, filters, etc.) are smaller.
The IGBT Modules portfolio is optimized for DC/AC stages of solar inverters. They provide high current density, robust short circuit protection along to deliver outstanding performance.
Our SiC & Hybrid package technologies are optimized for superior performance, lower thermal resistance than discrete devices, and easy mounting packages that fit industry standard pinouts.
With vGaN technology, you get higher voltage handling and reduced energy losses for solar inverters, and fast, efficient, high-density power for energy storage systems.
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SiC is preferred for high‑efficiency and high‑frequency designs, while IGBTs remain effective for very high current or cost‑sensitive systems. Hybrid approaches combine both to balance efficiency, thermal performance, and system cost.
A solar inverter typically includes a DC‑DC boost stage for MPPT and voltage regulation, followed by a DC‑AC inverter stage for grid‑connected power conversion. Supporting blocks include sensing, isolation, protection, and EMI filtering.
MPPT is usually implemented in the DC‑DC boost stage, adjusting operating voltage and current to maximize panel output. Common implementations use two‑level or three‑level boost topologies with fast current sensing and digital control.
Power modules integrate switches, diodes, and thermal paths into a single package. They simplify layout, improve thermal performance, enhance reliability, and reduce development time, especially in medium‑ to high‑power inverter designs.
Higher DC bus voltage reduces current, cabling losses, and system cost while enabling higher power throughput per inverter. As a result, 1500 V architectures are widely adopted in commercial and utility‑scale solar installations.
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