Provides selectable double- and quadruple-voltage gain within a single converter architecture, offering greater voltage-conversion flexibility while potentially reducing the need for multiple converter configurations.

Micro-inverter systems may require different voltage-gain levels while maintaining efficient power conversion within a compact converter design, creating challenges in achieving flexible voltage conversion without compromising efficiency or system size.

Provides a flexible LLC DC-DC converter for micro-inverter applications using a full-bridge circuit, resonant transformer and rectifier with selectable transformer taps, enabling switching between double and quadruple voltage-gain modes for flexible power conversion.

Introduces selectable double- and quadruple-voltage-gain operation within an LLC resonant DC-DC converter using transformer windings and tapping switches, providing flexible voltage conversion without requiring separate converter architectures.