Texas Instruments 9-A Active Bus Termination/DDR Memory DC/DC Converter TPS54972EVM-222 TPS54972EVM-222 Datenbogen
Produktcode
TPS54972EVM-222
Schematic
4-2
4.1
Schematic
The schematic for the TPS54x72EVM−222 is shown in Figure 4−1.
Figure 4−1. TPS54x72EVM−222 Schematic
PwrPad
J1
VI
GND
2
1
TP1
C4
10
10
µ
F
TP2
TP3
C2
470 pF
R2
10 k
Ω
C1
12 pF
C6
0.047
µ
F
1
2
3
4
4
5
6
7
8
9
10
11
12
13
14
AGND
VSENSE
COMP
STATUS
BOOT
PH
PH
PH
PH
PH
PH
PH
PH
PH
RT
ENA
REFIN
VBIAS
VIN
VIN
VIN
VIN
VIN
PGND
PGND
PGND
PGND
PGND
15
16
17
18
19
20
21
22
23
24
25
26
27
28
U1
TPS54672PWP (1)
R1
10 k
10 k
Ω
R3
301
301
Ω
C3
470 pF
470 pF
R9
OPEN
OPEN
TP4
R4
2.4
2.4
Ω
PH
C5
3300 pF
3300 pF
L1
0.65
µ
F
PH
1
2
L2
USER
C7
22
µ
F
+
+
+
C9
22
µ
F
C11
22
µ
F
C12
1
µ
F
TP7
TP6
TP5
TP10
VTTQ
R8
0
Ω
VTTQ
1
2
J2
VDDQ
GND
C15
USER
C16
USER
C17
USER
C8
10
10
µ
F
C10
1
1
µ
F
R7
10 k
10 k
Ω
C14
0.1
0.1
µ
F
R6
10 k
10 k
Ω
C13
0.1
0.1
µ
F
R5
71.5 k
71.5 k
Ω
TP9
1
2
J3
TP8
Optional Output Filter Block (Back Side of PCB)
(1) TPS54672 or TPS5472 or TPS54972