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US 9,071,152 B2Granted
Power converter with demand pulse isolation
AssigneeCogniPower, LLC
InventorsWilliam H. Morong, Thomas E. Lawson
Life of this patent
Estimating the term…
Abstract
The present invention provides a switched-mode power converter with regulation demand pulses sent across a galvanic isolation barrier.
Claims17
Apparatus configured to provide switched-mode power conversion, the apparatus comprising:
- an input port configured to receive input power;
- a switch configured to commutate the input power;
- galvanic isolation circuitry configured to provide galvanic isolation between the input port and an output port, wherein the galvanic isolation circuitry comprises a transformer comprising (i) a primary winding arranged in circuit with the input port and the switch and (ii) a secondary winding arranged in circuit with a rectifier and the output port, wherein the transformer is configured to transfer power from the input port to supply voltage or current to a load connected to the output port;
- and
- a demand pulse generator galvanically connected to the secondary winding and configured to generate demand pulses applied via the galvanic isolation circuitry to the switch to adjust a frequency of the commutation of the input power to supply a desired amount of voltage or current to the load.
2 more elements
Apparatus configured to provide galvanically isolated switched-mode power conversion, the apparatus comprising:
- an input port configured to receive input power;
- a switch configured to commutate the input power;
- a transformer comprising (i) a primary winding arranged in circuit with the input port and the switch and (ii) a secondary winding arranged in circuit with a rectifier and an output port, wherein the transformer is configured to supply power from the input port to a load connected to the output port;
- and
- a first pulse source circuitry located on an input side of the apparatus and configured to generate pulses to control the switch to start the power conversion;
- and
- a second pulse source circuitry located on an output side of the apparatus and configured to generate pulses to control the switch to continue the power conversion after being started by the first pulse source circuitry.
4 more elements
In an isolated switched-mode power converter having an input port and an output port, a method of regulation comprising:
- (a) comparing a voltage or current at the output port with a reference that is galvanically associated therewith;
- (b) generating or gating demand pulses responsive to that comparison;
- (c) applying the demand pulses to an output-port side of galvanic isolation circuitry;
- (d) receiving replicas of the demand pulses from an input-port side of the galvanic isolation circuitry;
- and
- (e) adjusting commutation frequency of the converter responsive to the demand pulses to cause the voltage or current at the output port to attain a desired value.
3 more elements
Dependencies are inferred from the claim text.