Datasheet

18
21
18
9
10
15
7
COMP
FB
SS
DROOP
PWM1
PWM4
TPS40090PW
16
RT
+
8
11
13
12
REF
DIFFO
GNDS
VOUT
5
1
2
CSCN
3
4
A
B
A
B
A
B
A
B
+
700mV
+
+
+
+
+
gM
CS1
CS2
CS3
CS4
1/N
PH2
PH4
POWER
GOOD
14
+
+
+
+
CLOCK
01
02
03
04
16
PGOOD ILIM
5V
REG
24
EN/SYNC
PHDET
19 PWM3
20 PWM2
PH2 PH4
23 VIN
22 BP5
17 GND
PH2
PH4
Σ I K
PH
x
5 Am
A =-(K+Y)
B=+1
CURRENT
LIMIT
I
PH1
I
PH2
I
PH3
I
PH4
I
PH1
I
PH2
I
PH3
I
PH4
gM
gM
gM
I
DROOP
TPS40090
TPS40091
www.ti.com SLUS578B –OCTOBER 2003– REVISED MAY 2006
FUNCTIONAL BLOCK DIAGRAM
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