Electronic circuit with device for monitoring a power supply using a trip threshold chosen from a range of voltages around a band gap voltage
US10673431B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2018 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Oct 16, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power supply voltage is monitored by a monitoring circuit including a variable current generator and a band gap voltage generator core receiving the variable current and including a first node and a second node. A control circuit connected to the first and second nodes is configured to deliver a control signal on a first output node having a first state when an increasing power supply voltage is below a first threshold and having a second state when increasing power supply voltage exceeds the first threshold. The first threshold is at least equal to the band gap voltage. An equalization circuit also connected to the first and second nodes with feedback to the variable current generator generates the bandgap voltage at a second output node. The control signal operates to control actuation of the equalization circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.