Power controller with turn-on time configured according to number of current limit operations
US9985539B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2017 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Nov 14, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power controller is provided. The power controller has a peak current setting unit utilized for deciding a peak current value according to a divided input voltage and a current limit turn-on time value. The comparator sends a first trigger signal once a current value of a power switch of the power system reaches the peak current value. The turn-on time calculation module defines the number of current limit operations by using the count of first trigger signals received in a calculation time period and then processes a recursive calculation to calculate a turn-on time value according to the current limit turn-on time value, the number of current limit operations, and a target number of current limit operations. The timer transmits a second trigger signal when the set turn-on time value is counted. The switch control module turns off the power switch when receiving one of the first and the second trigger signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.