Circuit for controlling load switch
US9190895B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2015 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Aug 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/3725
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for controlling load switch is disclosed in the present invention. The circuit is applied to a load circuit which includes a load switch and a working element. The circuit includes a first comparator, a second comparator, and a third comparator. When an inductance current achieves the average current, the first comparator triggered to conduct a first switch. When the inductance current achieves a default ripple current, the second comparator is triggered to conduct a second switch. When either one of the first switch and the second switch is conducted, the load switch is turned off to make a variable voltage be increased. When the first switch is conducted, a capacitance voltage of a controlled capacitance is increased to increase a turned-off time. When the second switch is conducted, the capacitance voltage is decreased to decrease the turned-off time to control the load switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.