Power supply circuit
US5883501A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Apr 10, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply circuit provided with an operation control circuit to control the operation of an oscillator, a comparator, and a reference voltage generator by generating a pump enable signal. During normal operation, the operation control circuit generates an active pump enable signal to run the power supply circuit and generate a voltage according to a reference voltage from the reference voltage generator, while during standby, the operation control circuit generates an inactive pump enable signal in response to an internal clock signal from a CPU to make the power supply circuit operate intermittently, whereby the power consumed during standby can be reduced and the time for return to the operating state can be shortened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.