Dual stage Vcc charging for switched mode power supply
US10075063B2 · kind B2 · utility
1Cited by
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21Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 13, 2017 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Jan 13, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A startup circuit is provided for establishing the Vcc voltage level of a switching power converter. The startup circuit uses a switch controller and path switching transistor to provide a two-stage Vcc capacitor charging that reduces startup time while avoiding short circuit damage through the alternate usage of a high impedance charging path and a low-impedance charging path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.