Buck switching regulator with improved mode transition and...

Details Buck switching regulator with improved mode transition and... Buck switching regulator with improved mode transition and...

2009-04-06

2011-12-13

Behm, Harry (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

08076917

ABSTRACT:
The present invention discloses a buck switching regulator with improved mode transition, and a method for controlling a buck switching regulator. The method comprises: providing a switching regulator including: an output power stage for converting an input voltage to an output voltage, the output power stage being controlled by a first PWM signal during a fixed-frequency PWM mode (FPWM mode), and being controlled by a first voltage signal during a pulse skipping mode (PSK mode), wherein the first PWM signal is generated according to the first voltage signal; and in a transition from the PSK mode to the FPWM mode, proving a second voltage signal as a starting point of the first voltage signal, the second voltage signal being substantially close to a target of the first voltage signal in the FPWM mode.

REFERENCES:
patent: 7583138 (2009-09-01), DeStasi et al.
patent: 2007/0046273 (2007-03-01), Riehl

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