Power factor correction using power factor correction circuitry from deactivated circuit

A method of delivering power in an electronic device, the method comprising:

• delivering power independently to first and second loads during a normal power mode, the normal power mode comprising:
• powering the first load using a first power converter, powering the second load using a second power converter, and performing power factor correction for both circuits formed by the first and second power converters and their respective loads using a power factor correction circuit;
• and
• delivering power to the second load during an auxiliary power mode, the auxiliary power mode comprising:
• deactivating the first power converter and the power factor correction circuit, powering the second load using the second power converter, and performing power factor correction by connecting a reactive component from the power factor correction circuit to the second load using the second power converter.

A power supply for delivering electrical power to a plurality of controllers in an electronic device, the power supply:

• first and second power converters each being coupled to a load;
• a power factor correction circuit connected to the first and second power converters;
• and
• control circuitry connected to the first and second power converters and the power factor correction circuit,
• wherein the control circuitry is configured to operate the power supply in a normal power mode such that:
• the first and second power converters and the power factor correction circuit are active, the first and second power converters each drive their respective load, and the power factor correction circuit performs power factor correction for both circuits formed by the first and second power converters and their respective load, and
• wherein the control circuitry is configured to operate the power supply in an auxiliary power mode such that:
• both the first power converter and the power factor correction circuit are deactivated and the second power converter is active, the second power converter drives its load, and the second power converter performs power factor correction for a circuit formed between the second power converter and its load.