Philips VES15.1HE LA Service Manual page 29

8.5 Diagram 10-3-5 B05,
Block diagram
12V DC Supply
from enable logic
from enable logic
from enable logic
Pinning information
Power, TPS65251 (IC U19)
AGND
V3V
INTERNAL
V7V VOLTAGE RAILS
VIN1
SS1
EN1
Rlim1
VIN2
SS2
EN2
Rlim2
VIN3
SS3
EN3
Rlim3
VIN
PG
Generator
PGOOD
30 29 28
31
GND
32
VIN
33
VIN
VIN 34
35
GND
(power pad connected to ground)
LX3
36
LX3
37
VIN3 38
BST3 39
EN3 40
1 2 3
Figure 8-5 Internal block diagram and pin configuration
IC Data Sheets
TPS65251
BUCK1
BUCK2
BUCK3
PFM mode
GND
27 26 25 24 23 22 21
20
19
18
17
16
TPS65251
15
14
13
12
11
4 5 6 10
7 8 9
back to
div. table
VES15.1HE LA 8.
ROSC
OSC
SYNC
BST1
LX1
LX1
FB1
COMP1
BST2
LX2
LX2
FB2
COMP2
BST3
LX3
LX3
FB3
COMP3
LOW_P
EN2
BST2
VIN2
LX2
LX2
LX1
LX1
VIN1
BST1
EN1
EN 29
Vout BUCK1
Vout BUCK2
Vout BUCK3
19421_303_130516.eps
130516
2015-Jan-20