Datasheet

VIN
GND
EN
GND
6V to 42V
3.3V @ 3.5A
VOUT
GND
1
Not Populated
1
1
1
BOOT
2
VIN
3
EN
4
RT/CLK
5
FB
6
COMP
7
GND
8
SW
9
PWRPD
U1
TPS54340DDA
C5
5600pF
R4
11.5k
C8
47pF
C4
0.1uF
L1
5.6 uH
R6
10.2k
R7
49.9
R5
31.6k
R3
162k
R1
365k
R2
86.6k
1
2
J2
1
2
J1
TP1
TP3
TP7
TP6TP5
1
2
J3
+
C3
C1
2.2uF
C2
2.2uF
TP2
D1
B560C
C6
100uF
C7
+
C9
TP8
TP4
GND
FB
FB
1
www.ti.com Schematic and Bill of Materials
3.2 Estimated Circuit Area
The estimated printed-circuit-board area for the components used in this design is 1.025 in
2
(661 mm
2
).
This area does not include test points or connectors. This design uses 0603 components for easy
modifications. The area can be reduced by using smaller-sized components.
4 Schematic and Bill of Materials
This section presents the EVM schematic and bill of materials.
4.1 Schematic
Figure 28 is the schematic for the EVM.
Figure 28. TPS54340EVM-182 Schematic
15
SLVU794A–October 2012–Revised February 2013 Using the TPS54340 Step-Down Converter Evaluation Module
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