Setup By Mode
9
SLAU751 – November 2017
Copyright © 2017, Texas Instruments Incorporated
TPA3251 Evaluation Module
ii. Connect the male RCA jack to the female RCA jack input B
(
J14-
BLACK)
for the
OUTB
speaker.
iii. Connect the male RCA jack to the female RCA jack input C/CD
(
J18-
WHITE)
for the
OUTC
speaker.
iv. Connect the male RCA jack to the female RCA jack input D
(
J15-
BLUE)
for the
OUTD
speaker.
b. AIB input: Set J26, J27, J34, and J35 to AIB.
Table 5. Jumper Configuration (SE Mode)
Jumper
Setting
Comment
J29
IN
PVDD to 15-V BUCK
J32
IN
12-V LDO to 12-V TERM
J33
IN
3.3-V LDO to 3.3-V TERM
J36
IN
12-V LDO to GVDD
J16
3 to 4
MASTER MODE 600kHz
J22
OUT
OUTA CAP SHUNT
J23
OUT
OUTB CAP SHUNT
J24
OUT
OUTC CAP SHUNT
J25
OUT
OUTD CAP SHUNT
J5
1 to 2
M1 – H
J6
1 to 2
M2 – H
J7
OUT
PBTL SELECT INC
J8
OUT
PBTL SELECT IND
J4
2 to 3
INA/B DIFF INPUT
J19
2 to 3
INC/D DIFF INPUT
J26
1 to 2
INC-SEL RCA
J27
1 to 2
IND-SEL RCA
J34
1 to 2
INA-SEL RCA
J35
1 to 2
INB-SEL RCA
J21
IN
C_START
NOTE:
The performance of the TPA3251EVM/TPA3251D2DDV is dependent on the power supply.
Design the power supply with margins that can deliver the required power. Some low-
frequency applications can require additional bulk capacitance. Replacing the bulk capacitors
on the TPA3251EVM with 3300 µF or more capacitance can be necessary depending on the
power supply used.
2.4.1
Performance Data (SE Mode)
All measurements are taken at audio frequency = 1 kHz, PVDD_X = 36 V, RL = 4
Ω
, fS = 600 kHz, ROC
= 22 k
Ω
, Output filter: L = 7
μ
H, C = 0.68 µF, with AES17 + AUX-0025 measurement filters.