TPS61025-Q1 Datasheet, PDF (15/31 Pages) Texas Instruments – TPS6102x 96 Efficient Synchronous Boost Converters

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Application Information (continued)
TPS61025-Q1, TPS61027-Q1, TPS61029-Q1
SLVSA31A – NOVEMBER 2009 – REVISED DECEMBER 2014
Battery
Input
C1
10 µF
L1
6.8 µH
R1
R2
C5
DS1
0.1 µF
SW
VBAT
EN
LBI
VOUT
FB
PS
LBO
C6
1 µF
C2
C3
2.2 µF 47 µF
V_CC2 10 V
Unregulated
Auxiliary Output
V_CC1 5 V
Boost Main Output
R5
LBO
List of Components:
U1 = TPS61027DRC1
L1 = EPCOS B82462-G4682
C3, C5, C6, = X7R,X5R Ceramic
C3 = Low ESR Tantalum
DS1 = BAT54S
GND
PGND
TPS61027
Figure 13. Power Supply Solution With Auxiliary Positive Output Voltage
Battery
Input
C1
10 µF
L1
6.8 µH
R1
R2
C5
0.1 µF
SW
VBAT
EN
LBI
PS
DS1
VOUT
FB
LBO
C6
1 µF
V_CC2 -5 V
Unregulated
Auxiliary Output
C2
C3
2.2 µF 47 µF
V_CC1 5 V
Boost Main Output
R5
LBO
GND
PGND
List of Components:
U1 = TPS61027DRC
L1 = EPCOS B82462-G4682
C1, C2, C5, C6 = X7R,X5R Ceramic
C3 = Low ESR Tantalum
DS1 = BAT54S
TPS61027
Figure 14. Power Supply Solution With Auxiliary Negative Output Voltage
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TPS61029-Q1
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