Electronic control unit
US9588579B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 2, 2015 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Oct 2, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/3243
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic control unit includes a microcomputer, a monitoring unit, a clock-generating oscillator circuit, a first power circuit supplying power to the microcomputer, and a second power circuit supplying power to the monitor microcomputer. The first power circuit includes a first switching power source including a first transistor and a first series power source including a second transistor. The second power circuit includes a second switching power source including a third transistor and a second series power source including a fourth transistor. Further, the ECU includes a power control circuit controlling each of the transistors and an oscillation stop detection circuit. When a stop of oscillation is detected, the power control circuit switches ON the second transistor, and switches OFF the fourth transistor, thereby diminishing a no-monitoring period of the microcontroller during a stop of the clock output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.