Analysis of a passive clamp circuit with a high negative gain high-efficiency converter

摘要

A negative output high gain dc-dc converter derived from conventional Flyback converter has been proposed in this paper. The high-frequency transformer leakage energy is transferred to the output side through a diode and a capacitor, which acts as a passive snubber. The efficient leakage energy recovery results in high steady state operating efficiency. Working on the circuit over the complete switching time period has been explained which is validated through the simulation results in the open loop. Preliminary mathematical model of the proposed converter has been derived for finding the dynamics between the voltage across an output port and the duty cycle of the converter. Simulations of the closed loop control are done after designing a suitable compensator for the plant.