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.

Watch Thomas demonstrate in this video: Meter Power Supply Design Against Magnetic Interference