Datasheet
1
P1
2 Ro C1
=
p ´ ´
ea
R2
A1 = gm Ro| | R3
R1 + R2
´ ´
ea
R2
A0 = gm Ro
R1 + R2
´ ´
f
f f
Z1
P1 P2
s
1
2
EA A0
s s
1 1
2 2
æ ö
+
ç ÷
p ´
è ø
= ´
æ ö æ ö
+ ´ +
ç ÷ ç ÷
p ´ p ´
è ø è ø
p ´
ea
O
gm
C =
2 BW (Hz)
ea
Aol(V/V)
Ro =
gm
A0
A1
P1
Z1
P2
Aol
BW
Vref
V
O
R1
R3
C1
C2
R2
C
O
R
O
gm
ea
COMP
VSENSE
Type2A Type2B Type1
C2
R3
C1
TPS54240
www.ti.com
SLVSAA6A –APRIL 2010–REVISED DECEMBER 2012
DETAILED DESCRIPTION (continued)
Figure 47. Types of Frequency Compensation
Figure 48. Frequency Response of the Type 2A and Type 2B Frequency Compensation
(18)
(19)
(20)
(21)
(22)
(23)
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