Input current control method, switch control circuit and power supply including the switch control circuit
US9467137B2 · kind B2 · utility
44Cited by
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29Claims
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Assignee
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Key dates
| Filing date | Nov 18, 2014 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Dec 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch control circuit that controls a switching operation of a power switch includes: an input current calculator generating an input sense voltage by integrating a sense voltage that indicates a switching current flowing to the power switch for a switching period unit of the power switch; and an input current comparator generating a gate-off signal according to a result of comparison between the input sense voltage and a predetermined input reference voltage, wherein the power switch is turned off according to the gate-off signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.