Totem pole power factor correction system

A totem pole power factor correction system for driving a load, the totem pole power factor correction circuitry comprising:

• an input interface comprising:
• a first input node and a second input node for receiving an AC input signal from an external power supply;
• and
• an impedance connecting the first input node to the second input node;
• an output interface for providing a driving signal to a load, the output interface comprising:
• a first output node and a second output node for connecting to the load;
• and an output capacitor connected between the first output node and the second output node;
• a synchronous boost PFC converter comprising:
• an inductor coupled between the first input node and an intermediate node;
• a first switch connected between the intermediate node and the first output node;
• and a second switch connected between the intermediate node and the second output node;
• a rectifying system comprising:
• a first rectifying diode connected between the second input node and the first output node;
• and a second rectifying diode connected between the second output node and the second input node;
• and
• a boost input decoupler comprising:
• a first clamping diode connected between the first input node and the first output node;
• a second clamping diode connected between the second output node and the first input node;
• and
• one or more decoupling capacitors, wherein each decoupling capacitor is connected between either:
• the first input node and the first output node;
• or
• the first input node and the second output node.