Self-timed switching regulator pre-driver
US7075343B2 · kind B2 · utility
3Cited by
14References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2004 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/164
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching voltage regulator includes a switching transistor connected to conduct a current (i) between a supply voltage and a first node in response to a control signal which cycles the transistor on and off, and a “pre-driver” circuit which provides the control signal. The control signal is pulled up and down with a current Idrv. The pre-driver circuit adaptively varies Idrv such that it is at a relatively low level when the rate of change of current i (di/dt) in the switching transistor is relatively high, and is at a relatively high level when di/dt is relatively low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.