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US 11,108,331 B2Granted
Method and apparatus for continuous conduction mode operation of a multi-output power converter
AssigneePower Integrations, Inc.
InventorsKarl Moore, Antonius Jacobus Johannes Werner
Life of this patent
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Abstract
Methods and apparatus for continuous conduction mode operation in multi-output power converters are described herein. During a switching cycle, secondary current may be delivered via a diode to a secondary output. Prior to beginning a subsequent switching cycle, a diverting current may be provided to a lower voltage secondary output on a parallel path. In this way diode current may be reduced to substantially zero prior to the subsequent switching cycle.
Claims12
A multi-output power converter configured to provide power to multiple loads, the multi-output power converter comprising:
- a transformer comprising a primary winding and multiple secondary windings having a plurality of secondary outputs, the primary winding configured to receive energy from a first power supply;
- a primary switch electrically coupled to the primary winding and configured to switch according to a switching cycle;
- a secondary switches block electrically coupled to the plurality of secondary outputs and comprising a plurality of outputs, the plurality of outputs comprising:
- a high voltage secondary output electrically coupled to the multiple secondary windings via a diode;
- and
- a lower voltage secondary output;
- and
- a system control module configured to divert a secondary current from the high voltage secondary output to the lower voltage secondary output so as to reduce a reverse recovery current of the diode during the switching cycle.
5 more elements
Dependencies are inferred from the claim text.