SLOU441 July   2016 TPA3255

 

  1.   TPA3255EVM
    1.     Trademarks
    2. 1 Hardware Overview
      1. 1.1 TPA3255EVM Features
      2. 1.2 TPA3255EVM Frequency Adjust
      3. 1.3 TPA3255EVM Single-Ended and Differential Input
      4. 1.4 TPA3255EVM Clip Overtemperature and Fault Indicators
    3. 2 TPA3255EVM Setup
      1. 2.1 TPA3255EVM Setup
      2. 2.2 Hardware Requirements
      3. 2.3 Hardware Default Setup BTL (2.0)
    4. 3 Using TPA3255EVM in Different Output Configurations
      1. 3.1 BTL Plus Two SE (2.1) Operation
      2. 3.2 PBTL (0.1) Output Operation
      3. 3.3 Single-Ended (SE) Output (4.0) Operation
    5. 4 Board Layouts, Bill of Materials, and Schematic
      1. 4.1 TPA3255EVM Board Layouts
      2. 4.2 TPA3255EVM Board Dimension
      3. 4.3 Bill of Materials
      4. 4.4 TPA3255EVM Schematics

3.2 PBTL (0.1) Output Operation

Configure the EVM as follows for PBTL operations:

Table 6. PBTL Default Jumper States

Jumper Setting Comment
J29 IN PVDD to 15-V BUCK
J31 IN 12-V LDO to 12-V TERM
J32 IN 3.3-V LDO to 3.3-V TERM
J33 IN 3.3-V LDO to 3.3-V TERM
J21 IN CSTART SE
J16 3 to 4 MASTER MODE
J5 2 to 3 M1 – PBTL
J6 1 to 2 M2 – PBTL
J22 IN OUTA CAP SHUNT
J23 IN OUTB CAP SHUNT
J24 IN OUTC CAP SHUNT
J25 IN OUTD CAP SHUNT
J26 2 to 3 INC SELECT
J27 2 to 3 IND SELECT
J7 2 to 3 PBTL SELECT INC – GND
J8 2 to 3 PBTL SELECT IND – GND
J10 OUT INC/D DIFF INPUT
J12 OUT INC/D DIFF INPUT
J4 1 to 2 INA/B SE INPUT
J19 1 to 2 INC/D SE INPUT
  • Set J6 to H and J5 to L.
  • Connect speaker/power resistor (2–4 Ω) positive terminal to OUTA and OUTC (OUT A and C shorted).
  • Connect speaker/power resistor (2–4 Ω) negative terminal to OUTB and OUTD (OUT B and D shorted).
  • Install PBTL jumpers J7 and J8 (pulls input C and input D to GND).
  • For single-ended mono input, connect RCA male jack to female RCA jack input A/AB (RED) and set J4 jumper positions to SE.
  • For differential mono inputs, connect positive RCA male jack to female RCA jack input A/AB (RED) and connect negative RCA male jack to female RCA jack input B (YELLOW) and set J4 jumper position to DIFF.

NOTE

INA and INB are the inputs for PBTL and INC and IND are grounded for PBTL operation.