| US 7,576,525 B2 | ||
| Supply power control with soft start | ||
| John So, Fremont, Calif. (US); and David Yen Wai Wong, San Jose, Calif. (US) | ||
| Assigned to Advanced Analogic Technologies, Inc., Santa Clara, Calif. (US) | ||
| Filed on May 16, 2007, as Appl. No. 11/749,714. | ||
| Claims priority of provisional application 60/912920, filed on Apr. 19, 2007. | ||
| Claims priority of provisional application 60/853282, filed on Oct. 21, 2006. | ||
| Prior Publication US 2008/0094865 A1, Apr. 24, 2008 | ||
| Int. Cl. G05F 1/569 (2006.01); H02H 9/02 (2006.01) | ||
| U.S. Cl. 323—276 [323/901; 323/908; 361/93.9] | 47 Claims |
| 1. A device for controlling power, comprising:
a pass element adapted to conduct a charge current; and
a power loop control circuit including a soft start controller and a soft start component, the soft start controller being
adapted to produce a control signal corresponding to incremental steps of the charge current through the pass element and
the soft start component being adapted to manage charge current increases in incremental steps up to a current limit in accordance
with the control signal, wherein the current limit is associated with a predetermined power limit value of power dissipated
across the pass element.
|