TPS51117
SLVS631B –DECEMBER 2005–REVISED SEPTEMBER 2009...................................................................................................................................... www.ti.com
+5V
+
+VBAT
TPS51117PW
+
C4
0.1mF
C2
EN_PSV
1
2
14
13
12
11
VBST
DRVH
LL
20mF
EN_PSV
Q1
R3
L1
1.0mH
TON
249kW
VO
VOUT
V5FILT
VFB
3
4
5
6
7
+
R5
1.05V/10A
W
300
R4
R1
TRIP
8.5kW
R6
W
C3
C1A
C1B
GND
100k
V5DRV 10
1mF
R2
Q2
PGOOD
PGOOD
GND
DRVL
PGND
9
8
22kW
PGND
-
GND
Figure 24. 1.05-V/10-A Application From VBAT (PW Package)
+
+5V
+
+VBAT
TPS51117RGY
EN_PSV
C2
20mF
L1
1.0mH
1
14
C4
0.1mF
EN_PSV
VBST
Q1
Q2
R3
2
3
4
5
6
13
12
11
10
9
DRVH
LL
TON
249kW
VO
1.05V/10A
R5
+
VOUT
V5FILT
VFB
300W
R4
R1
8.5kW
R6
100kW
TRIP
C3
1mF
C1B
C1A
GND
V5DRV
DRVL
R2
22kW
PGOOD
PGOOD
GND
7
PGND
8
-
PGND
GND
Figure 25. 1.05-V/10-A Application From VBAT (RGY Package)
Table 1. Typical Application Circuit Components
SYMBOL
SPECIFICATION
470 μF, 2.5 V, 12 mΩ
10 μF, 25 V, 2 pcs
1.0 μH
MANUFACTURER
SANYO
PART NUMBER
C1A, C1B
2R5TPE470MC
C2
L1
Murata
GRM31CR61E106KA12B
Vishay, Toko
International Rectifier
International Rectifier
—
IHLP-5050, FDA1254-1R0M
Q1
Q2
R4
30V, 13 mΩ
IRF7821
IRF8113
Std
30 V, 5.8 mΩ
8.06 kΩ
20
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