TPS51220_16 Datasheet, PDF (33/43 Pages) Texas Instruments – Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller

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TPS51220
SLVS785C – OCTOBER 2007 – REVISED JULY 2009
APPLICATION CIRCUITS
VO1
5V/6A
C11
2x120mF
PGND
VBAT
L1
4mH
C12
2x10mF
PGND
Q11
Q12
VREG5
5V/100mA
C14
0.1mF
C01
10mF
PGND
C24
0.1mF
GND PGND
PGND
VO1
R01
330kW
32 31 30 29 28 27 26 25
1 _DRVH1
2 V5SW
3 RF
24
DRVH2
VIN 23
VREG3 22
GND EN1
PGOOD1
4 EN1
5 PGOOD1
TPS51220RHB
(QFN32)
EN2 21
PGOOD2 20
R14
6.8kW
SKIPSEL1
6 SKIPSEL1
R15
56kW
7 CSP1
C13
0.1mF
CSN1
8
PowerPAD
SKIPSEL2 19
CSP2 18
CSN2 ₁₇
C22
Q21
2x10mF
PGND
VBAT
L2
4mH
Q22
PGND
C21
2x220mF
VO2
3.3V/6A
PGND
C03
1mF
EN2
PGOOD2
GND
SKIPSEL2
R24
6.8kW
C23
0.1mF
R25
56kW
VBAT
VREG3
3.3V/10mA
EN
VO1
9
GND
R11
120kW
R12
30kW
C15
100pF
GND
10
11
12
13
14
15
16
GND
R13
10kW
VREF2
VREF2
C02
0.22mF
GND ^VREF2
R23
10kW
C25
220pF
R21
62kW
R22
27kW
GND
VREG5
VO2
Figure 53. Current Mode, DCR Sensing, 5.0V/5A, 3.3V/5A, 300-kHz
SYMBOL
C11
C12
C21
C22
L1
L2
Q11, Q21
Q12, Q22
Table 6. Current Mode, DCR Sensing, 5.0V/5A, 3.3V/5A, 300-kHz
SPECIFICATION
2 × 120 μF/ 6.3 V/15-mΩ
2 × 10 μF/ 25 V
2 × 220 μF/ 4.0 V/15-mΩ
2 × 10 μF/ 25 V
4.0 μH, 10.3 A, 6.6-mΩ
4.0 μH, 10.3A, 6.6-mΩ
30-V, 13.6-A, 9.5-mΩ
30-V, 13.8-A, 5.8-mΩ
MANUFACTURER
Panasonic
Murata
Panasonic
Murata
Sumida
Sumida
IR
IR
PART NUMBER
EEFCX0J121R
GRM32DR71E106K
EEFCX0G221R
GRM32DR71E106K
CEP125-4R0MC-H
CEP125-4R0MC-H
IRF7821
IRF8113
Copyright © 2007–2009, Texas Instruments Incorporated
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