Overheat detection circuit and power supply apparatus
US9972614B2 · kind B2 · utility
0Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2016 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Nov 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L23/647
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is an overheat detection circuit having a small circuit scale, low cost, and low electric power consumption. The overheat detection circuit implemented in a CMOS semiconductor device includes: a reference voltage circuit connected between a base and an emitter of a parasitic bipolar transistor; and a current detection circuit connected to the emitter of the parasitic bipolar transistor, in which the current detection circuit is configured to detect a flow of a current through the parasitic bipolar transistor to output an overheat detection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.