GaN and Bidirectionality Enable Single-Stage Microinverters

Advances in solar power electronics are pushing microinverters toward simpler, single-stage architectures.
By using gallium nitride (GaN) switches and bidirectional power flow, designers can replace multiple stages with a compact topology that handles both DC from panels and AC to the grid in one step.
GaN devices offer higher switching speeds and lower losses than traditional silicon, enabling faster control loops and cooler operation at similar power levels.
The bidirectional capability supports energy flow in either direction, which helps with functions such as active power decoupling, module-level monitoring, and potential integration of energy storage in the same platform.
The result is a smaller, lighter microinverter with fewer components, reduced cabling, and improved reliability.
End-to-end efficiency improvements and the ability to track fast transients can improve energy capture in variable solar conditions.
While traditional two-stage systems separate DC-DC conversion from inversion, the single-stage approach relies on high-performance GaN switches and careful gate drive to manage voltage stress and EMI.
As solar deployments scale and performance demands rise, these architectures can simplify installation and maintenance while enabling higher power densities in residential and commercial applications.