10

Date: 08/17/04

SP7655 Wide Input Voltage Range 8A, 300kHz, Buck Regulator

© Copyright 2004 Sipex Corporation

Bode Plot of Type III Error Amplifier Compensation.

CP1

RZ2

CZ2

-

+

6

5

VFB

COMP

+

- 0.8V

CF1

VOUT

R1

68.1k, 1%

R

SET

CZ3

RZ3

R

SET

=54.48/ (VOUT -0.8) (kΩ)

Type III Error Amplifier Compensation Circuit

APPLICATIONS INFORMATION

Frequency

(Hz)

Error Amplifier Gain

Bandwidth Product

Condition:

C22 >> CP1, R1 >> RZ3

20 Log (RZ2/R1)

Gain

(dB)