Reference voltage generation circuit
US10503195B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2019 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Feb 11, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A reference voltage generation circuit small in circuit scale and in power consumption is provided. The reference voltage generation circuit, including a stabilizing capacitor, outputting a voltage at both ends of the stabilizing capacitor as an output voltage, includes a voltage detection circuit, a reference voltage circuit, a stabilizing capacitor, a current source circuit, and a control circuit. The current source circuit generates a first current if the output voltage is lower than a detection voltage and a second current if the output voltage is higher than or equal to the detection voltage, the first current being larger than the second current. The voltage detection circuit includes one of a single transistor and transistors connected by cascode connection that is smaller in the number of stages than the cascode connection in the reference voltage circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.