Abstract |
In this paper, the small-signal transfer functions of the Buck QRC have been derived. The derived small-signal transfer functions have been used to design the control circuit for this converter. Based on the small signal analysis, the control circuit has been designed (using multiloop control), simulated, built and tested with the converter. By using this control scheme, the converter provides very good transient response and a stable system. The same technique can be used to design the control circuit for other quasi-resonant converters. |