Philips TPM15.5L LA Service Manual page 33

8.2 Diagram 10-4-1 System Power
Block diagram
M5723B
Pinning information
B01, M5723B (IC U703)
VREF VREF
+ +
0.6V 0.6V
A1 A1
+ +
EA EA
FB1 FB1
Compensation Compensation
EN1 EN1
IN2 IN2
EN2 EN2
SHUTDOWN SHUTDOWN
LOGIC LOGIC
OVER TEMP. OVER TEMP.
PROTECT PROTECT
AGND AGND
EN1 EN1 EN1 1 1 1
2 2 2
AGND AGND AGND
FB1 FB1 FB1 3 3 3
AGND AGND AGND 4 4 4
5 5 5
EN2 EN2 EN2
Figure 8-4 Internal block diagram and pin configuration
IC Data Sheets
Current Sense Current Sense
OC OC
OSC OSC
S S
R R
Q Q
CONTROL CONTROL
UVLO UVLO
Thermal Thermal
Shutdown Shutdown
Zero Current Detect Zero Current Detect
OVER CURRENT OVER CURRENT
ERROR ERROR
PROTECT & DYNAMIC PROTECT & DYNAMIC
AMP AMP
FEEDBACK FEEDBACK
1.25V 1.25V
Vref Vref
10 10 10
Thermal Thermal Thermal
Pad Pad Pad
back to
div.table
TPM15.5L LA 8.
IN1 IN1
HDRV HDRV
100mΩ 100mΩ
LX LX
LDRV LDRV
80mΩ 80mΩ
PGND PGND
OUT2 OUT2
R1 R1
R2 R2
LX LX LX
9 9 9 PGND PGND PGND
IN1 IN1 IN1
8 8 8
OUT2 OUT2 OUT2
7 7 7
IN2 IN2 IN2
6 6 6
EN 33
19760_300.eps
2015-Aug-08