en.Wedoany.com Reported - Enphase Energy has introduced the IQ9N microinverter for the U.S. residential solar market, marking the first application of gallium nitride (GaN) power conversion technology in home photovoltaic installations. By replacing traditional silicon-based components with GaN, the product achieves faster switching speeds, lower power losses, and superior thermal management, making it suitable for high-power modern photovoltaic modules.
The IQ9N is designed to pair with high-output residential solar panels, supporting a maximum continuous input DC current of 16 A and a maximum short-circuit current of 25 A. It operates within a maximum input voltage of 60 V and a maximum power point tracking (MPPT) voltage window of 28 V to 45 V, delivering a peak and maximum continuous AC output power of 427 VA in a 240 V split-phase configuration and 405 VA in a 208 V single-phase grid configuration.
The integrated GaN technology enables the unit to achieve a CEC weighted efficiency of 97.5% and a peak efficiency of up to 97.8%. This semiconductor platform reduces internal conduction losses, allowing the device to maintain lower operating temperatures during seasonal temperature variations. The product uses natural convection cooling and operates within an ambient temperature range of -40°F to 149°F, with a double-insulated, corrosion-resistant polymer housing.
In residential retrofit and system expansion scenarios, the IQ9N is backward compatible with existing IQ7 and IQ8 series microinverters on the same IQ Gateway or IQ Combiner, provided system capacity balance and energy storage parameters are matched. When integrated with IQ Battery, the combined maximum continuous output of the microinverter array must not exceed 150% of the battery system's rated power, unless the automatic PV curtailment function is enabled.
The product features integrated Stäubli MC4 DC connectors and standard Enphase AC cables to simplify on-site installation. Grid safety compliance functions are built directly into the microinverter firmware, meeting IEEE 1547-2018 and UL 1741-SB (California Rule 21) standards, and include an integrated rapid shutdown function to instantly reduce voltage at the module level.
Certain new residential series configurations will be manufactured domestically in the U.S. as part of Enphase's U.S. production footprint, making them eligible for the domestic content bonus tax credit under the Inflation Reduction Act. The IQ9N microinverter has begun shipping to U.S. distributors and comes with a 25-year limited warranty.
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