Droop amplifier circuit

Details Droop amplifier circuit Droop amplifier circuit

2006-06-20

2006-06-20

Patel, Rajnikant B. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S285000, C323S222000, C327S345000

Reexamination Certificate

active

07064528

ABSTRACT:
A droop amplifier circuit for a DC-DC regulator including an amplifier, at least one first resistive device, a second resistive device, a third resistive device, and a first capacitive device. Each first resistive device is coupled between an output inductor (phase node or current sense node) and the amplifier's non-inverting input. The first capacitive device is coupled between the regulator output and the amplifier's output. The second resistive device is coupled between the regulator output and the amplifier's inverting input. The third resistive device is coupled between the amplifier's inverting input and output. A second capacitive device may be coupled between the regulator output and the amplifier's non-inverting input. A fourth resistive device may be coupled in parallel with the second capacitive device. A relatively small, simple and low performing amplifier is sufficient. Circuit area and power are reduced, and low input offset voltage is more easily achieved.

REFERENCES:
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Kaiwei Yao et al: “Optimal desing of the active droop control method for the transient response” APEC 2003 18thAnnual IEEE Applied Power Electronics Conference and Exposition. Miami Beach, FL, Feb. 9-13, 2003, Annual Applied Power Electronics Conference, New York, NY: IEEE, US, vol. 1 of 2. conf. 18, Feb. 9, 2003, pp. 718-723, XP010631589 ISBN: 0-7803-7768-0 the whole document.
Redl R et al: “Optimizing eh load transient response of the buck converter” Applied Power Elctronics Conference and Exposition, 1998, APEC '98, Conference Proceedings 1998. Thirteenth Annual Anaheim, CA, USA Feb. 15-19, 1998, New York, NY USA, IEEE, US, vol. 1, Feb. 15, 1998; pp. 170-176, XP010263591 ISBN: 0-7803-4340-9 the whole document.
International Search Report. 5 sheets.

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