Datasheet

OFF
EN
ON
2
Not Installed
5 A
2
GND
5 A
GND
VOUT
VIN
TPS54527 4.5 V to 18 V
IC Usage
TPS54528
Iout Max
4.5 V to 18 V
Input Voltage Range
See BOM for IC usage
1
1
1
1
1
1
3
Optional
3
VIN = 4.5 V - 18 V
VOUT = 1.05 V
TPS54427
TPS54428
4.5 V to 18 V
4.5 V to 18 V
4 A
4 A
Auto-ECO
No
No
Yes
Yes
R3 0
TP4
R1 8.25k
C5
1uF
TP5
TP2
TP1
C6
8200pF
R5
TP6
TP8
C4
TP3
C2
10uF
C8 C9
22uF
C10
22uF
TP9
TP7
R2
22.1k
C7 0.1uF
L1 1.5uH
D1
1
2
J1
1
2
3
JP1
C1
10uF
C3
0.1uF
R4 10.0k
1
2
J2
C11
1
EN
2
VFB
3
VREG5
4
SS
5
GND
6
SW
7
VBST
8
VIN
9
PWPD
U1
TPS54x2xDDA
VOUT
VOUT
Schematic, Bill of Materials, and Reference www.ti.com
6 Schematic, Bill of Materials, and Reference
6.1 Schematic
Figure 17 is the schematic for the TPS54427 evaluation module.
Figure 17. TPS54427 Schematic Diagram
6.2 Bill of Materials
Table 5. Bill of Materials
RefDes QTY Value Description Size Part Number MFR
C1, C2 2 10uF Capacitor, Ceramic, 25V, X5R, 20% 1210 Std Std
C11 0 Open Capacitor, Ceramic 1206 Std Std
C3, C7 2 0.1uF Capacitor, Ceramic, 50V, X7R, 10% 0603 Std Std
C4, C8 1 Open Capacitor, Ceramic 0603 Std Std
C5 1 1.0uF Capacitor, Ceramic, 16V, X7R, 10% 0603 Std Std
C6 1 8200pF Capacitor, Ceramic, 25V, X7R , 10% 0603 Std Std
C9, C10 2 22uF Capacitor, Ceramic, 6.3V, X5R, 20% 1206 C3216X5R0J226M TDK
L1 1 1.5uH Inductor, SMT, 11 A, 9.7 mΩ 0.256 x 0.280 inch SPM6530T-1R5M100 TDK
R1 1 8.25k Resistor, Chip, 1/16W, 1% 0603 Std Std
R2 1 22.1k Resistor, Chip, 1/16W, 1% 0603 Std Std
R3 1 0 Resistor, Chip, 1/16W, 1% 0603 Std Std
R4 1 10.0k Resistor, Chip, 1/16W, 1% 0603 Std Std
R5 0 Open Resistor, Chip, 1/16W, 1% 0603 Std Std
U1 1 TPS54427DDA IC, 4-A Output Single Sync. Step-Down SO8[DDA] TPS54427DDA TI
6.3 Reference
1. TPS54427, Single Synchronous Converter With Integrated High Side and Low Side MOS FET data
sheet (SLVSB43)
12
TPS54427, 4-A, SWIFT™ Regulator— Evaluation Module SLVU579–December 2011
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