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
FB
Type 2A Type 2B Type 1
C2
R3
C1
TPS54340
SLVSBK0B –OCTOBER 2012–REVISED MARCH 2014 www.ti.com
Feature Description (continued)
Figure 32. Types of Frequency Compensation
Figure 33. Frequency Response of the Type 2A and Type 2B Frequency Compensation
(13)
(14)
(15)
(16)
(17)
(18)
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