Patent ID: 8634217

Claim:
An AC to DC converter for converting an AC input voltage to a regulated DC output voltage, comprising: a Z-type converter receiving the AC input voltage and providing the DC output voltage, comprising: a first inductance coupled between first and second nodes and a second inductance coupled between third and fourth nodes; a first rectified switch coupled between said second and fourth nodes and a second rectified switch coupled between said first and third nodes; a capacitance coupled between said second and third nodes; and a load device which develops the DC output voltage, wherein said load device is coupled in series with one of said first inductance and said first rectified switch; wherein the AC input voltage is applied via said first and fourth nodes of said Z-type converter; and a control network which senses the AC input voltage and the DC output voltage and which develops a control signal for controlling said first and second rectified switches to regulate the DC output voltage.