Self-initialized soft start for Miller compensated regulators
US6617833B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2002 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Apr 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/468
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A Miller compensated voltage regulator, adapted to be supplied with power from a voltage supply, and having an input port and an output port. The voltage regulator includes a voltage regulation circuit responsive to a reference voltage at the input port to provide a regulated voltage at the output port. The voltage regulation circuit includes a first amplifier adapted to receive a reference voltage at a first input, having a second input, and having an output, and also a second amplifier having a first input coupled to an internal node, the internal node being coupled to the output of the first amplifier, the second amplifier having a second input adapted to receive a bias voltage and having an output. A pass transistor is provided having a source coupled to the voltage supply, having a drain coupled to the output port, and having a gate coupled to the output of the second amplifier, and a Miller compensation capacitor is provided coupled between the output port and the internal node. A feedback circuit is coupled between the output port and the second input of the first amplifier. In accordance with the invention, an enable control circuit is provided, adapted to maintain the inte…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.