TPS40056_16 Datasheet, PDF (8/33 Pages) Texas Instruments – WIDE-INPUT SYNCHRONOUS, TRACKING BUCK CONTROLLER

TPS40056
SLVS612 − APRIL 2006
VTRKIN
R4
R5
TPS40056PWP
4 EA_REF HDRV 13
5 SGND
SW 12
6 SS
BP10 11
7 VFB
LDRV 10
8 COMP PGND 9
R3
R1
+
VOUT
−
R6
Figure 1. Tracking Configuration, V_OUT Tracks V_TRKIN
UDG−06020
600
500
400
300
200
100
0
0
SWITCHING FREQUENCY
vs
TIMING RESISTANCE
10
9
8
7
6
5
4
3
2
1
0
200
400
600
800
1000
2
fSW − Switching Frequency − kHz
Figure 2
BP10 AND BP5
vs
INPUT VOLTAGE
BP10
BP5
4
6
8
10
12
14
VIN − Input Voltage − V
Figure 3
8
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