TPS51211
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SLUSAA7 –NOVEMBER 2010
TPS51211 APPLICATION CIRCUITS
V5IN
4.5 V
to
V
IN
8 V
to
20 V
6.5 V
C3
10 mF x 4
U1
TPS51211
R6
100 kW
C1
0.1 mF
R1
5.6 kW
1
2
3
4
5
PGOOD
VBST 10
Q1
FDMS8680
R7
L1
0.45 mH
TRIP
EN
DRVH
SW
9
8
7
6
R3
1 kW
V
3.3 W
OUT
1.1 V
18 A
EN
VFB
TST
V5IN
DRVL
Q2
FDMS8670AS
Q3
FDMS8670AS
C4
330 mF x 4
GND
C2
1 mF
R2
10 kW
R5
30 kW
V
_GND
OUT
R4
470 kW
UDG-10164
Figure 18. 1.1-V VOUT, 18-A IOUT Application
Table 1. 1.1-V, 18-A, 290-kHz Application List of Materials
REFERENCE
DESIGNATOR
QTY
SPECIFICATION
MANUFACTURER
PART NUMBER
C3
1
1
1
1
2
4 × 10 mF, 25 V
Taiyo Yuden
Panasonic
Panasonic
Fairchild
TMK325BJ106MM
EEFCX0D331XR
ETQP4LR45XFC
FDMS8680
C4
4 × 330 mF, 2 V, 12 mΩ
0.45 mH, 25 A, 1.1 mΩ
30 V, 35 A, 8.5 mΩ
L1
Q1
Q2, Q3
30 V, 42 A, 3.5 mΩ
Fairchild
FDMS8670AS
Copyright © 2010, Texas Instruments Incorporated
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