Auxiliary supply generation for power converters
AssigneeCree, Inc.
InventorQingcong Hu
Life of this patent
Estimating the term…
Abstract
A power converter may be configured to power multiple output loads, including a main output load and at least one auxiliary output load. The power converter may include control circuitry that controls power delivery to output circuits coupled to the output loads. When the main output load is operating in a reduced power mode, the control circuitry may trigger the switching circuitry to increase the supply of power in order to increase the auxiliary voltages used to power the auxiliary loads if one or more of the auxiliary voltages drops below a threshold due to the main output load operating in the reduced power mode.
Claims25
A power converter comprising:
- a first output circuit configured to generate a first voltage to power a first output load;
- a second output circuit configured to generate a second voltage to power a second output load;
- and
- a control circuit configured to:
- control power supplied from a magnetic element of the power converter to the first and second output circuits;
- and
- trigger an increase in the supply of power in response to a level of the second voltage falling below a threshold level.
A power supply system comprising:
- a plurality of output circuits coupled to a magnetic element, each of the plurality output circuits configured to power a different one of a plurality of output loads, the plurality of output circuits comprising:
- a first output circuit configured to generate a first voltage to power a first output load;
- and
- a second output circuit comprising a converter configured to receive an input voltage and power a second output load based on the input voltage;
- and
- a control circuit configured to trigger an increase in power supplied from the magnetic element based on a level of the input voltage.
A method of controlling auxiliary bias voltage, the method comprising:
- generating, with a first output circuit of a power converter, a main output voltage to power a first load;
- generating, with a second output circuit of the power converter, an auxiliary voltage to power a second load;
- and
- increasing, with a magnetic element of the power converter, power supplied to the first and second output circuits in response to a level of the auxiliary voltage falling below a threshold level.
Dependencies are inferred from the claim text.