Datasheet

Schematic
4-2
4.1 Schematic
The schematic for the TPS54973EVM−017 is shown in Figure 4−1.
Figure 4−1. TPS54973EVM-017 Schematic
PH
+
U1
TPS54973
RT
SYNCH
SS/ENA
VBIAS
PWRGD
COMP
VSENSE
AGND
PwrPad
VIN
VIN
VIN
VIN
VIN
PH
PH
PH
PH
PH
PH
PH
PH
PH
BOOT
PGND
PGND
PGND
PGND
PGND
PGND
28
27
26
25
4
3
2
1
24
23
22
21
20
14
13
12
11
10
9
8
7
6
5
19
18
17
16
15
R4
0.047 µF
TP9
C5
C4
1 µF
R6
71.5 k
10 k
TP4
R3R1
10 k
4.02 k
C6
3300 pF
C8
1200 pF
R5
383
C7
120 pF
R2
9.76 k
TP10
R7
0
TP2
VOUT
TP5
J1
VOUT
GND
2
1
TP1
C14
0.1 µF
C13
22 µF
C12
22 µF
C2
22 µF
L1
0.65 µH
R8
2.2
C15
3300 pF
TP3
L2
2
2 2 2
+++
C16 C17 C18
2
1
C3
0.047 µF
TP6
C9
22 µF
C10
22 µF
TP7
VIN
C11
22 µF
C1
1
J2
2
1
VIN
GND
TP8
J3
1
2
J4
PRECHG_IN
GND
D1
MURS120T3
D2
MURS120T3
D3
MURS120T3
D3
MURS120T3
2
1
1
2
2
1
J5
J5
Optional Input Capacitor
User Defined, Circuit Located on Back of PCB
PH
VOUT
VIN