Voltage detection device and voltage protection method
US12385971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2023 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Apr 8, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/16576
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A voltage detection device includes a voltage divider circuit, a comparator circuit and a switch control circuit. The voltage divider circuit operates in a first mode based on a switching signal and divides a power voltage to generate an input voltage. The comparator circuit compares the input voltage with a set of reference voltages to generate a detection signal. The switch control circuit selectively adjusts a switching signal according to the detection signal after a predetermined period has elapsed from power-on of the power voltage so as to control the voltage divider circuit to switch from operating in the first mode to operating in a second mode. The first mode corresponds to a first target level of the power voltage, the second mode corresponds to a second target level of the power voltage, and the first target level is higher than the second target level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.