Preventing supply of power to a microcomputer of an electronic control device until capacitors are discharged
US11726794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Aug 14, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To obtain a highly reliable electronic control device capable of reliably causing a microcomputer to perform normal termination and normal re-activation by controlling a power supply voltage. According to the present invention, an electronic control device 25 includes a microcomputer 18, a power supply control unit 20 that controls a power supply voltage of the microcomputer, and a capacitor 19 provided between the power supply control unit and the microcomputer. The power supply control unit 20 includes a power supply unit 24 that supplies a first power supply voltage V1 to the microcomputer by turning ON an activation signal for activating the microcomputer, and stops the supply of the power supply voltage by turning the activation signal OFF, a reset control unit 14 that generates a Low reset signal by turning the activation signal OFF, and a discharge control unit 12 that discharges electric charges of the capacitor when acquiring the Low reset signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.