3_5kw DDIRECTED ENERGY, INC. TECHNICAL NOTE 3kW AND 5kW HALF-BRIDGE CLASS-D RF GENERATORS AT 13.56MHz WITH 89% EFFICENCY AND LIMITED FREQUENCY AGILITY Abstract DEI / IXYS has developed an RF generator design for very high power at a ISM frequency. of 13.56MHz, using a pair of DE375-102N12A MOSFETS driven by DEIC420 gate drive ICs, in a half-bridge operating in Class-D with limited frequency agility, to generate 3kW of output power at 83.5% efficiency. A pair of modules generates 5KW at 89% efficiency using a total of four DE375-102N12A RF MOSFETs. This technical note discussed the design of this RF generator and supporting SPICE models. 2401 Research Blvd. Suite 108 Fort Collins, CO USA 80526 TEL (970) 493-1901 FAX (970) 493-1903 EMAIL: deiinfo@directedenergy.com www.directedenergy.com An IX……