Pulse width modulation controller and method for output ripple reduction of a jittering frequency switching power supply
US8582324B2 · kind B2 · utility
10Cited by
14References
5Claims
0Family size
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Key dates
| Filing date | Jan 30, 2012 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pulse width modulation controller and method for output ripple reduction of a jittering frequency switching power supply detect the current of a power switch of the switching power supply to generate a current sense signal, and adjust the gain or the level of the current sense signal according to the switching frequency of the power switch to adjust the on time of the power switch, to reduce the output ripple of the switching power supply caused by the jittering frequency of the switching power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.