Compact 600 W DC-to-RF MOSFET inverter for ultrasonic transducer at1 MHz

摘要

Described is a compact single-ended MOSFET inverter with aswitching snubber operating at a frequency of 1 MHz, which generates anRF power of 600 W when an ultrasonic transducer with a characteristicimpedance of 1 ohm is connected to the inverter. The inverter has apower conversion efficiency of 67% at 1 MHz when a DC voltage of 70 V issupplied to the inverter. The inverter is 22 cm×l7 cm×9 cmin dimensions and 2 kg in weight