Abstract :
An improved soft-switching PWM half-bridge DC-DC converter, which uses a saturable reactor-assisted soft-switching technique is presented, The converter has many advantages such as both low switching losses and low-conduction losses, wide load range, constant frequency operation and low EMI. The principle of operation and its steady-state analysis are illustrated. To demonstrate the effectiveness of the characteristic performances, feasible experiments are carried out with a 150 W, 200 kHz prototype,
Keywords :
DC-DC power convertors; PWM power convertors; electromagnetic interference; losses; saturable core reactors; switching circuits; 150 W; 200 kHz; asymmetrical PWM DC-DC converter; constant frequency operation; high-frequency transformer link; low EMI; low switching losses; low-conduction losses; saturable reactor-assisted soft-switching; steady-state analysis; wide load range;
