Wide input range, low output voltage power supply
US9966941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2015 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | May 4, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/595
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
This disclosure describes techniques for generating relatively low regulated power supply voltages over a relatively wide range of input voltages. The techniques for generating the regulated voltages may include using at least two different pass transistors to regulate an output voltage of a voltage regulator. Both the turn-on threshold voltage and the maximum drain-to-source voltage rating of the first pass transistor may be greater than the corresponding characteristics of the second pass transistor. Using two different pass transistors with two different turn-on threshold voltages and two different maximum drain-to-source voltage ratings may increase the range of voltages over which a voltage regulator can generate a relatively low output voltage relative to the range of voltages that would be allowable if a single type of pass transistor were used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.