Quick Start (BTL Mode)
4
SLAU751 – November 2017
Copyright © 2017, Texas Instruments Incorporated
TPA3251 Evaluation Module
b. Connect the positive RCA male jack to the female RCA jack input C/CD
(
J18-
RED)
and
connect the negative RCA male jack to the female RCA jack input D
(
J15-
BLACK)
.
c. Analog-Input Board (AIB) input: Set J26, J27, J34, and J35 to AIB.
10. Power up the power supply after correctly making all the connections. The 3.3-V and 12-V LEDs
(GREEN)
then illuminate.
11. Set S1 to the
NORMAL
position.
12. The CLIP_OTW
(ORANGE)
and FAULT
(RED)
LEDs must be off if the audio source is off.
lists the jumper configurations in BTL mode.
Table 1. Jumper Configurations (BTL Mode)
Jumper
Setting
Configuration for BTL
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
IN
OUTA CAP SHUNT
J23
IN
OUTB CAP SHUNT
J24
IN
OUTC CAP SHUNT
J25
IN
OUTD CAP SHUNT
J5
2 to 3
M1-L
J6
2 to 3
M2-L
J7
OUT
PBTL SELECT INC
J8
OUT
PBTL SELECT IND
J4
1 to 2
INA/B SE INPUT
J19
1 to 2
INC/D SE 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
OUT
C_START
