The bang-bang hysteresis current waveshaping control technique used to implement a high power factor power supply

This work presents the operation and design of a high power factor high frequency switching power supply. A good power factor is obtained using as a pre-regulator circuit an AC-DC boost converter associated with a nondissipative snubber operating with high power factor and without commutation losses. The same nondissipative snubber associated with the forward converter is used as the DC-DC converter.

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