Events for May 5, 2026

This talk covers research on miniaturized power supplies using high-voltage IC technologies from 110/230V mains or 400V DC sources to power low-voltage subsystems. It explores system and circuit solutions for chip-scale power supplies, enhancing miniaturization and decentralization of complex systems, applicable to sensor nodes, transmitters, receivers, and actuators with 3-10V supply voltages at or below 500mW. Highlighted are various miniaturized high-voltage converters, including active-clamp flyback and buck converters. An innovative voltage-interval-based constant-on-time control for buck converters supports 12.5-400 V input, achieving a power density of 752 mW/cm³ and 84% peak efficiency. A high-speed, low- power HV threshold-detection circuit significantly reduces sensing losses. The AC-DC converter features an active zero-crossing buffer, minimizing capacitance by 240x and enabling integration up to 50 mW with a power density of 458 mW/cm³ and 73.7% AC peak efficiency. Monolithic GaN integration supports designs like a 55W PFC converter and a 15W offline buck converter. A fully integrated GaN power stage operating at 500V and up to 6.25MHz will also be presented. Speaker(s): Bernhard Wicht Virtual: https://events.vtools.ieee.org/m/555593

Meeting for general administration and operation of the Black Hills Subsection. Virtual: https://events.vtools.ieee.org/m/558600