TPS51219 Datasheet, PDF (29/36 Pages) Texas Instruments – High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedback

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TPS51219
SLUSAG1B – MARCH 2011 – REVISED OCTOBER 2011
TPS51219 1.00-V/10.4-A, D-CAP™ 400-kHz, Resistor Sensing Application Circuit
V5IN
4.5V to 5.5V
EN
C1
0.1uF
C10
1nF
R2
R1
47k
100 k
1 _VREF
2 _REFIN
3 _GSNS
4 _VSNS
U1
TPS51219
C2
0.01uF
R7
10
C9
0.01uF
R8
10
R3
0
SW ¹²
DH ¹¹
DL ¹⁰
V5 ⁹
C3
0.1uF
C4
2. 2uF
Q1
FDMS8680
4
R4
0
5
1-3
4
Q2
FDMS8670AS
5
1-3
R6
100
R5
3m
C5
C6
0.1uF 4x10uF
/50V /25V
L1
0.45uH
C7
2x330uF
VIN
8V to 20V
Vout
1.00V/10.4A
C8
12x22uF
Vout _ GND
C11
1nF
Figure 36. 1.00-V/10.4-A, D-CAP™ 400-kHz, Resistor Sensing
Table 6. 1.00-V/10.4-A, D-CAP™ 400-kHz, Resistor Sensing, List of Materials
REFERENCE
DESIGNATOR
C6
C7
C8
L1
Q1
Q2
R5
QTY
4
2
12
1
1
1
1
SPECIFICATION
10 µF, 25 V
330 µF, 2 V, 9 mΩ
22 µF, 6.3 V
0.45 µH, 17 A, 1.1 mΩ
30 V, 35 A, 8.5 mΩ
30 V, 42 A, 3.5 mΩ
3 mΩ, 1 W
MANUFACTURE
Taiyo Yuden
Panasonic
Murata
Panasonic
Fairchild
Fairchild
KOA
PART NUMBER
TMK325BJ106MM
EEFSX0D331ER
GRM21BB30J226ME38
ETQP4LR45XFC
FDMS8680
FDMS8670AS
TLR2HDTD3L00F
Copyright © 2011, Texas Instruments Incorporated
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