Patent Number: 7,714,556

Title: Quick response switching regulator and control method thereof

Abstract: A quick response switching regulator comprises a power stage having a pair of high-side switch and low-side switch and an inductor connected together by a switching node, a feedback circuit for producing a feedback signal, and a control circuit producing control signals with reference to the feedback signal to control the pair of high-side switch and low-side switch. The feedback circuit is connected to the switching node to shorten the feedback path and speed up the response. The control circuit further monitors the current flowing through the inductor to keep the low-side switch off before the peak of the inductor current becomes higher than a value.

Inventors: Chu; Kwan-Jen (Hsinchu, TW), Chiu; Tzu-Huan (Jhubei, TW), Kung; Nien-Hui (Hsinchu, TW), Lu; Chien-Ping (Tainan, TW)

Assignee: Richtek Technology Corp.

International Classification: G05F 1/40 (20060101)

Expiration Date: 5/11/12018