Claims
- 1. A switching regulator comprising:
a feedback circuit to generate a control voltage and respond to slow changes in output current; a transient recovery circuit to generate an inject signal and respond to fast changes in the output current; and a pulse-width modulation circuit to control switching operations of the switching regulator, wherein the control voltage controls the duty cycle of the switching operations to regulate the output voltage of the switching regulator, and wherein the inject signal overrides the control voltage to control the duty cycle of the switching operations to suppress output voltage transients in response to fast changes in the output current.
- 2. The switching regulator of claim 1 wherein the transient recovery circuit is inactive during non-transient conditions.
- 3. The switching regulator of claim 1 wherein the transient recovery circuit is disabled during power up of the switching regulator.
- 4. The switching regulator of claim 1 wherein the transient recovery circuit is disabled during power down of the switching regulator.
- 5. A multiphase switching regulator comprising at least one phase configured for continuous operation to provide a regulated output voltage and at least one dedicated phase configured for intermittent operation to suppress output voltage transients in response to fast changes in output current.
RELATED APPLICATION
[0001] This application is a continuation-in-part of U.S. patent application Ser. No. 09/708,268, filed on Nov. 7, 2000, now allowed.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09708268 |
Nov 2000 |
US |
Child |
10136614 |
Dec 2001 |
US |