Method of and circuit for brown-out detection
US9594099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2014 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | May 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit and method for detecting a brown-out condition and providing a feed-forward transfer function in a power supply circuit. A comparison circuit is coupled to a delay element through a latch. A second delay element is connected between the first delay element and an input of the latch. The output of the first delay element is connected to a clamping circuit via a logic circuit. A first voltage is compared with a reference voltage to generate a comparison voltage, which is transmitted through the latch and the first delay element. The comparison voltage is monitored at an output of the first delay element. A brown-out condition occurs if the comparison voltage being monitored at the output of the first delay element results from the first voltage being less than the reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.