An integrated level shifter for use in high frequency half-bridges

Increasing the operating frequency of switch-mode power conversion circuits is desirable as it permits a higher power density, primarily through the reduction in the size of filter components. The half-bridge is a popular topology for converters though difficulties are encountered when operating at high supply voltages and high frequencies due to the floating high-side power switch. This paper describes the operation, design and analysis of an electronic integrated level shifter enabling operation of off-line half-bridges in the multi-megahertz range