Datasheet

1 2 3 4
24 23 22 21
DRVH2
VIN
VREG3
EN2
DRVH1
V5SW
RF
EN1
TPS51220ARTV
(QFN32)
5 6 7 8
20 19 18 17
PGOOD2
SKIPSEL2
CSP2
CSN2
PGOOD1
SKIPSEL1
CSP1
CSN1
9
VF B1
32
SW 1
31
VBS T 1
30
DR V L1
29
VR EG5
28
GN D
27
DR V L2
26
VBS T2
25
SW 2
10
COM P1
11
FU NC
12
EN
13
VR EF2
14
TR IP
15
CO MP 2
16
VFB 2
VO1
5.0V/5A
L1
C22
VBAT
PowerPAD
C02
0.22 mF
C01
10mF
VREG5
5V/100mA
R23
10kW
R13
10kW
C11
R11
120k W
PGOOD1
EN
EN1
VREG3
3.3V/10mA
Q11
Q12
Q22
Q21
C13
0.1mF
R12
30k W
GND
R14
6.8k W
R15
56kW
GND
GND
GND
L2
R24
6.8k W
GND
C23
0.1 mF
R25
56kW
C21
R21
62kW
R22
27k W
GND
PGOOD2
EN2
VO2
3.3V/5A
C03
2.2 mF
R01
330k W
PGND
GND
SKIPSEL1
SKIPSEL2
VBAT
VO2
C12
VBAT
VO1
VO1
C14
0.1m F
PGND
PGND
PGND
PGND
PGND
PGND
PGND
C24
0.1 mF
VREF2
C15
100p F
C25
220p F
VREF2
VREF2
GND
R26
4.7W
R16
4.7W
VREG5
TPS51220A
www.ti.com SLUS897E –DECEMBER 2008–REVISED JANUARY 2013
Figure 57. Current Mode, DCR Sensing, 5-V/5-A, 3.3-V/5-A, 300-kHz
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