During PCIM Europe 2025 in Nuremberg, Thomas Anthony Capobianco gave a poster presentation introducing a multi-output flyback design for meters that can protect against magnetic interference. With a low-RDS (ON), 900 V MOSFET, our LinkSwitch-XT2 switcher ICs improves efficiency at full-load, maintains efficiency at light-load and resists magnetic tampering.

A design method for reducing the susceptibility of a multi-output flyback to externally applied magnetic interference is discussed. Appropriate transformer design, component selection, and leveraging the benefits of ON/OFF control help achieve this. Results show start-up and thermal performance. Efficiency data and waveforms with and without the imposition of strong external magnetic disturbances are compared. This is intended for metering applications.