Microinverter solutions

Build reliable single- and multi-panel microinverters designs with Infineon’s application-optimized, energy-efficient semiconductor products

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Overview

Microinverters are DC-AC inverters providing power conversion right behind a PV panel. By utilizing panel-level maximum power point tracking (MPPT), solar microinverter maximizes power extraction across all environmental conditions and shading levels. Additionally, microinverters enable rapid shutdown (RSD) functionality and power monitoring for safety and performance tracking making them an ideal choice for residential solar power designs.

Benefits

  • Comprehensive product portfolio
  • 25+ years lifetime
  • High quality and reliability
  • Innovative GaN solutions
  • Tailored gate drivers
  • High-performance MCUs

Block diagram

About

Why choose Infineon for your microinverter designs?

Microinverters operate outdoors under harsh conditions and therefore require a compact form factor, high efficiency, and a long lifetime. 

Infineon supports these high quality and reliability standards through superior manufacturing processes, precise production screening, and automation, ensuring the long-term durability required by  microinverter solar installations. 

What products does Infineon offer for microinverters?

Infineon offers a wide range of products with different packages and technologies, including: 

- CoolGaN™ HEMTs: Maximum efficiency and power density

- OptiMOS™ and CoolSiC™ MOSFETs: Low conduction losses

- EiceDRIVER™ 2EDL gate driver ICs: Reliable switching control

- PSOC™ Control C3 MCUs: Real-time power control

- XENSIV™ Hall effect current sensors: Stable, accurate sensing

- EXCELON™ F-RAM: Unlimited read/write cycle endurance

- AIROC™ Wi-Fi + Bluetooth®: Low-power cloud link

By providing advanced power and control solutions, Infineon enables microinverters to achieve market-leading reliability in modern solar inverter designs. 

Explore Infineon’s microinverter solutions

How to maximize microinverter efficiency?

Choosing the right power semiconductor is critical to achieving superior energy extraction and reliability in microinverters. 

OptiMOS™ and CoolMOS™ N-channel MOSFETs: Provides a solid and versatile foundation for solar microinverter applications, meeting the industry’s most stringent performance requirements. 

CoolSiC™ silicon carbide MOSFETs: Opens up a new era of flexibility that allows designers to harness unprecedented levels of efficiency and reliability in microinverter designs. In addition, high-voltage CoolSiC™ MOSFET technology provides impressive improvements in reverse-recovery characteristics . 

CoolGaN™: Offers efficient gallium nitride transistor technology for power conversion in the voltage range of up to 600 V. With extensive experience in the semiconductor market, Infineon’s GaN technology brings the e-mode concept to maturity with end-to-end production in high volumes

Learn more about Infineon's power MOSFETs
Explore Infineon's CoolGaN™ technology
Why are gate drivers critical in microinverters?

Infineon’s EiceDRIVER™ family offers gate drivers with different configurations, voltage classes, isolation levels, protection features, and package options. 

Paired with Infineon’s IGBT discretes and modules and power transistors including silicon MOSFETs (CoolMOS™, OptiMOS™, and StrongIRFET™), silicon carbide MOSFETs (CoolSiC™) and gallium nitride HEMTS (CoolGaN™), these drivers allow designers to push the boundaries of power density and achieve maximum reliability. 

Which gate driver is best for microinverters?

Specifically, EiceDRIVER™ 2EDL81 family of dual-channel junction-isolated gate driver ICs are designed for medium-voltage power MOSFETs in half-bridge applications. Since MCUs in microinverter applications typically sit on the low-voltage side, the secondary (high-voltage) side requires gate drivers with reinforced isolation. For these architectures, the EiceDRIVER™ 2EDi family provides the necessary isolation and signal integrity for reliable microinverter solar installations.

Hence, Infineon’s EiceDRIVER™ portfolio is the industry-leading choice for driving MOSFETs, IGBTs, and wide-bandgap devices. 

Discover EiceDRIVER™ gate driver portfolio

How to ensure precision and safety in microinverters?

Precise current sensing is the backbone of efficient power tracking in a microinverter. Infineon’s XENSIV™ high-precision coreless open-loop current sensors are optimized to meet this strict accuracy requirements of solar microinverter applications. 

Furthermore, XENSIV™ coreless sensors are more space-efficient and cost-effective compared to traditional core-based current sensors. By eliminating the iron core or the flux concentrator, XENSIV™ sensors are immune to hysteresis and magnetic saturation, resulting in a highly linear analog output signal. This high linearity ensures precise MPPT tracking across the entire power range. 

What are the performance benefits of Infineon’s XENSIV™ current sensors? 

- High noise immunity: Uses differential measurement with two Hall cells to maintain accuracy despite crosstalk or magnetic stray fields

- Protection features: Provides a warning signal in case of an over- or undervoltage condition for the supply voltage

- Programmable flexibility: System designers can program the sensitivity and threshold levels of overcurrent signals without external components

Learn more about XENSIV™ sensors

Why are microcontrollers critical in a microinverter?

Infineon’s PSOC™ and XMC™ 32-bit MCUs enable precise MPPT control, significantly increasing the energy harvest of each solar microinverter. By integrating high-speed peripherals and memory on a single chip, these controllers reduce system complexity and power consumption in high-density microinverter solar designs. 

This architecture allows for more compact units while maintaining the processing power required for complex power conversion and grid communication.

How do MCUs protect microinverters?

Beyond performance, Infineon’s MCUs are equipped with advanced security features designed to protect PV inverter infrastructure from malware and unauthorized compromises. This robust protection future-proofs solar microinverters in both residential and commercial applications. 

To support these requirements, Infineon’s microcontroller portfolio offers a comprehensive range of options, including 32-bit microcontrollers that offer strong performance and future proven security solutions alongside traditional 8- and 16-bit microcontrollers

Explore Infineon's microcontroller portfolio

Why use EXCELON™ and AIROC™ in your microinverter design?

Infineon’s EXCELON™ family of memory products offer high energy efficiency, high density, and reliable data logging required for microinverters. 

What makes EXCELON™ F-RAM suitable for solar microinverters? 

Infineon’s next-generation ferroelectric RAM (F-RAM) memory delivers the industry’s lowest-power and mission-critical non-volatile memory, by combining: 

  • Ultra-low-power operation
  • High-speed interfaces
  • Instant non-volatility 
  • Unlimited read/write cycle endurance

How does connectivity add value?

Wireless connectivity enables remote monitoring, system integration, and cloud-based energy management. Infineon’s AIROC™ Wi-Fi + Bluetooth® solutions deliver secure, industrial-grade connectivity for high-performance solar optimizer systems, ensuring faster time-to-market. Furthermore, AIROC™ Wi-Fi + Bluetooth® SoCs integrate essential networking protocols to accelerate development of secure, cloud-connected PV energy management applications. 

Explore Infineon’s EXCELON™ F-RAM portfolio
Discover AIROC™ Wi-Fi + Bluetooth® combos

Why choose Infineon for your microinverter designs?

Microinverters operate outdoors under harsh conditions and therefore require a compact form factor, high efficiency, and a long lifetime. 

Infineon supports these high quality and reliability standards through superior manufacturing processes, precise production screening, and automation, ensuring the long-term durability required by  microinverter solar installations. 

What products does Infineon offer for microinverters?

Infineon offers a wide range of products with different packages and technologies, including: 

- CoolGaN™ HEMTs: Maximum efficiency and power density

- OptiMOS™ and CoolSiC™ MOSFETs: Low conduction losses

- EiceDRIVER™ 2EDL gate driver ICs: Reliable switching control

- PSOC™ Control C3 MCUs: Real-time power control

- XENSIV™ Hall effect current sensors: Stable, accurate sensing

- EXCELON™ F-RAM: Unlimited read/write cycle endurance

- AIROC™ Wi-Fi + Bluetooth®: Low-power cloud link

By providing advanced power and control solutions, Infineon enables microinverters to achieve market-leading reliability in modern solar inverter designs. 

Explore Infineon’s microinverter solutions

How to maximize microinverter efficiency?

Choosing the right power semiconductor is critical to achieving superior energy extraction and reliability in microinverters. 

OptiMOS™ and CoolMOS™ N-channel MOSFETs: Provides a solid and versatile foundation for solar microinverter applications, meeting the industry’s most stringent performance requirements. 

CoolSiC™ silicon carbide MOSFETs: Opens up a new era of flexibility that allows designers to harness unprecedented levels of efficiency and reliability in microinverter designs. In addition, high-voltage CoolSiC™ MOSFET technology provides impressive improvements in reverse-recovery characteristics . 

CoolGaN™: Offers efficient gallium nitride transistor technology for power conversion in the voltage range of up to 600 V. With extensive experience in the semiconductor market, Infineon’s GaN technology brings the e-mode concept to maturity with end-to-end production in high volumes

Learn more about Infineon's power MOSFETs
Explore Infineon's CoolGaN™ technology

Why are gate drivers critical in microinverters?

Infineon’s EiceDRIVER™ family offers gate drivers with different configurations, voltage classes, isolation levels, protection features, and package options. 

Paired with Infineon’s IGBT discretes and modules and power transistors including silicon MOSFETs (CoolMOS™, OptiMOS™, and StrongIRFET™), silicon carbide MOSFETs (CoolSiC™) and gallium nitride HEMTS (CoolGaN™), these drivers allow designers to push the boundaries of power density and achieve maximum reliability. 

Which gate driver is best for microinverters?

Specifically, EiceDRIVER™ 2EDL81 family of dual-channel junction-isolated gate driver ICs are designed for medium-voltage power MOSFETs in half-bridge applications. Since MCUs in microinverter applications typically sit on the low-voltage side, the secondary (high-voltage) side requires gate drivers with reinforced isolation. For these architectures, the EiceDRIVER™ 2EDi family provides the necessary isolation and signal integrity for reliable microinverter solar installations.

Hence, Infineon’s EiceDRIVER™ portfolio is the industry-leading choice for driving MOSFETs, IGBTs, and wide-bandgap devices. 

Discover EiceDRIVER™ gate driver portfolio

How to ensure precision and safety in microinverters?

Precise current sensing is the backbone of efficient power tracking in a microinverter. Infineon’s XENSIV™ high-precision coreless open-loop current sensors are optimized to meet this strict accuracy requirements of solar microinverter applications. 

Furthermore, XENSIV™ coreless sensors are more space-efficient and cost-effective compared to traditional core-based current sensors. By eliminating the iron core or the flux concentrator, XENSIV™ sensors are immune to hysteresis and magnetic saturation, resulting in a highly linear analog output signal. This high linearity ensures precise MPPT tracking across the entire power range. 

What are the performance benefits of Infineon’s XENSIV™ current sensors? 

- High noise immunity: Uses differential measurement with two Hall cells to maintain accuracy despite crosstalk or magnetic stray fields

- Protection features: Provides a warning signal in case of an over- or undervoltage condition for the supply voltage

- Programmable flexibility: System designers can program the sensitivity and threshold levels of overcurrent signals without external components

Learn more about XENSIV™ sensors

Why are microcontrollers critical in a microinverter?

Infineon’s PSOC™ and XMC™ 32-bit MCUs enable precise MPPT control, significantly increasing the energy harvest of each solar microinverter. By integrating high-speed peripherals and memory on a single chip, these controllers reduce system complexity and power consumption in high-density microinverter solar designs. 

This architecture allows for more compact units while maintaining the processing power required for complex power conversion and grid communication.

How do MCUs protect microinverters?

Beyond performance, Infineon’s MCUs are equipped with advanced security features designed to protect PV inverter infrastructure from malware and unauthorized compromises. This robust protection future-proofs solar microinverters in both residential and commercial applications. 

To support these requirements, Infineon’s microcontroller portfolio offers a comprehensive range of options, including 32-bit microcontrollers that offer strong performance and future proven security solutions alongside traditional 8- and 16-bit microcontrollers

Explore Infineon's microcontroller portfolio

Why use EXCELON™ and AIROC™ in your microinverter design?

Infineon’s EXCELON™ family of memory products offer high energy efficiency, high density, and reliable data logging required for microinverters. 

What makes EXCELON™ F-RAM suitable for solar microinverters? 

Infineon’s next-generation ferroelectric RAM (F-RAM) memory delivers the industry’s lowest-power and mission-critical non-volatile memory, by combining: 

  • Ultra-low-power operation
  • High-speed interfaces
  • Instant non-volatility 
  • Unlimited read/write cycle endurance

How does connectivity add value?

Wireless connectivity enables remote monitoring, system integration, and cloud-based energy management. Infineon’s AIROC™ Wi-Fi + Bluetooth® solutions deliver secure, industrial-grade connectivity for high-performance solar optimizer systems, ensuring faster time-to-market. Furthermore, AIROC™ Wi-Fi + Bluetooth® SoCs integrate essential networking protocols to accelerate development of secure, cloud-connected PV energy management applications. 

Explore Infineon’s EXCELON™ F-RAM portfolio
Discover AIROC™ Wi-Fi + Bluetooth® combos

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