Miniaturized ac-dc LED driver
Developed a miniaturized LED driver: 35W power level, high efficiency, high power factor, five times smaller than the conventional designs.
Miniaturized ac-dc ac-dc isolated converter
Designed a miniaturized isolated ac-dc converter: 50W/100W power level, high efficiency, high power factor, five times smaller than the state-of-the-art converters, high switching frequency at 1-10 MHz with zero-voltage-switching operation.
Novel stacked power-factor-correction (PFC) architecture
Proposed and patented a new power factor correction architecture (stacked structure) applicable to many grid interfacing applications.
Simple Control Isolated Bus Converter
Developed a new isolated dc-dc bus converter: high switching frequency operation at 1-5 MHz, simple control circuitry, and high efficiency with zero-voltage-switching operation.
High Frequency Magnetic Material Investigation
Investigated the low permeability magnetic core materials (NiZn and Powdered Iron) at high frequency (1-10 MHz) for inductor and transformer design.