Power converter with independent multiplier input for PFC circuit

A power supply for providing power to a load, the power supply comprising:

• a main rectifier having first and second rectifier input terminals configured to be coupled to an alternating current (AC) power source, the main rectifier configured to convert AC power from the AC power source into a first direct current (DC) power signal at first and second rectifier output terminals;
• an energy storage device coupled across the first and second rectifier output terminals;
• a DC-DC power converter comprising an integrated circuit (IC) and configured to convert the first DC power signal into a second DC power signal at an output of the DC-DC power converter in response to a multiplier signal received at a multiplier input of the IC;
• and
• a multiplier input circuit comprising:
• a first input voltage divider resistor coupled between the first rectifier input terminal of the main rectifier and a common node of the multiplier circuit,
• a second input voltage divider resistor coupled between the common node and the second rectifier output terminal of the main rectifier,
• a third input voltage divider resistor coupled between the second rectifier input terminal of the main rectifier and the common node,
• wherein the multiplier input circuit is configured to provide the multiplier signal to the multiplier input of the IC, and
• wherein the multiplier input circuit is decoupled from the energy storage device via the main rectifier.