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This User's Guide describes the operation of the evaluation module (TPA3255EVM, rev A) for the
TPA3255 315-W Stereo/600-W mono PurePath™ Ultra-HD Analog Input Power Stage. The user's guide
also provides design information, which includes schematics, BOM, and PCB layout. For questions and
support go to the E2E forums (e2e.ti.com).
The main contents of this document are:
•
Hardware descriptions and implementation
•
Design information
Related documents:
•
TPA3255 Data Sheet (SLASEA8)
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Topic
2
Hardware Overview
3
TPA3255EVM Setup
4
Using TPA3255EVM in Different Output Configurations
5
Board Layouts, Bill of Materials, and Schematic
SLOU441 – July 2016
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Copyright © 2016, Texas Instruments Incorporated
TPA3255EVM
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User's Guide
SLOU441 – July 2016
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TPA3255EVM
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Summary of Contents for Texas Instruments TPA3255EVM
- Page 1 SLOU441 – July 2016 TPA3255EVM This User’s Guide describes the operation of the evaluation module (TPA3255EVM, rev A) for the TPA3255 315-W Stereo/600-W mono PurePath™ Ultra-HD Analog Input Power Stage. The user’s guide also provides design information, which includes schematics, BOM, and PCB layout. For questions and support go to the E2E forums (e2e.ti.com).
- Page 2 Trademarks PurePath is a trademark of Texas Instruments. TPA3255EVM SLOU441 – July 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
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Page 3: Hardware Overview
Amp designed to allow TPA3255DDV operation with differential or single ended input signals to the EVM with differential inputs yielding the optimal performance. TPA3255EVM is a complete 2-Vrms analog input 2 × 315-W stereo/1 × 600-W mono high-power amplifier ready for evaluation and excellent listening experience. - Page 4 The TPA3255EVM supports both differential and single-ended inputs. For single-ended inputs, J4 and/or J19 jumpers are set to the SE position, so that the TPA3255EVM uses the NE5532 to convert the single- ended input signal to differential to properly drive the differential inputs of the TPA3255. The input RCA jack, J3, is used to provide INA inputs and RCA jack J14 is used to provide INB inputs.
- Page 5 Hardware Overview www.ti.com TPA3255EVM Clip Overtemperature and Fault Indicators The TPA3255EVM is equipped with LED indicators that illuminate when the FAULT and/or CLIP_OTW pin goes low. See Table 2 and (SLASEA8) for more details. Table 2. Fault and Clip Overtemperature Status...
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Page 6: Hardware Requirements
TPA3255EVM Setup www.ti.com TPA3255EVM Setup This section describes the TPA3255EVM hardware setup and connection. TPA3255EVM Setup Figure 2 illustrates the TPA3255EVM connection. Power Supply SE A/B Input DIFF A Input OUTA OUTB DIFF B Input TPA3255 under Heat Sink OUTC... - Page 7 (BLUE) and input D (BLACK) and set J4 and J19 jumper positions to DIFF. • Power up power supply once all the connections are made correctly and the 3.3-V and12-V LEDs (GREEN) will illuminate. SLOU441 – July 2016 TPA3255EVM Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
- Page 8 EVM is powered up correctly with jumpers in their default state. Start the media player of your choice and enjoy the enhanced audio performance TPA3255 provides as a quick check of the setup. TPA3255EVM SLOU441 – July 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
- Page 9 Using TPA3255EVM in Different Output Configurations www.ti.com Using TPA3255EVM in Different Output Configurations The TPA3255EVM can be configured for four different output operations. The 2.0 BTL configuration is the default set up of the TPA3255EVM described in Section 3.3. The remaining three configurations are 2.1 BTL plus two single-ended (SE) outputs, 0.1 PBTL output, and 4.0 single-ended (SE) outputs.
- Page 10 Using TPA3255EVM in Different Output Configurations www.ti.com • Connect right (stereo) channel input to female RCA jack input D (BLACK) for OUTD speaker. • For single-ended subwoofer (mono) input, connect RCA male jack to female RCA jack input A/AB (RED) and set J4 jumper positions to SE.
- Page 11 Design the power supply with margins that can deliver the needed power. In low-frequency applications additional bulk capacitance may be needed. Replacing the bulk capacitors on the TPA3255EVM with more capacitance may be necessary, depending on the power supply used.
- Page 12 Board Layouts, Bill of Materials, and Schematic TPA3255EVM Board Layouts Figure 3 Figure 4 illustrate the board layouts for the EVM. Figure 3. TPA3255EVM Top Composite Assembly Figure 4. TPA3255EVM Bottom Composite Assembly TPA3255EVM SLOU441 – July 2016 Submit Documentation Feedback...
- Page 13 Board Layouts, Bill of Materials, and Schematic www.ti.com TPA3255EVM Board Dimension Figure 5 illustrates the TPA3255EVM board dimensions, which are 140 mm × 120 mm. 160 mm Figure 5. TPA3255EVM Board Dimension SLOU441 – July 2016 TPA3255EVM Submit Documentation Feedback...
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Page 14: Bill Of Materials
CAP, AL, 47 µF, 63 V, ± SMT Radial F EEE-FK1J470P Panasonic 20%, 0.65 Ω, SMD C40, C41 1 µf CAP, CERM, 1 µF, 16 V, ± GRM188R71C105KA MuRata 10%, X7R, 0603 TPA3255EVM SLOU441 – July 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated... - Page 15 Ω, TH 10 µH Inductor, Wirewound, 10 2-Pin SMD, Body NRS4012T100MDGJ Taiyo Yuden µH, 0.8 A, 0.204 Ω, SMD 4 mm × 4 mm, Height 1.2 mm SLOU441 – July 2016 TPA3255EVM Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
- Page 16 Down Switching Regulator, Instruments 10-pin LLP, Pb-Free 1A Low Dropout Regulator, MP04A LM2940IMP- Texas 4-pin SOT-223, Pb-Free 12/NOPB Instruments FIXED LOW-DROPOUT DCY0003A TLV1117-33IDCY Texas VOLTAGE REGULATOR, Instruments DCY0003A TPA3255EVM SLOU441 – July 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
- Page 17 Vishay-Dale 2010 TP1, TP2, TP3, Test Point, Multipurpose, Grey 5128 Keystone TP4, TP5, TP6, Grey, TH Multipurpose TP7, TP8, TP9, Testpoint TP10, TP11, TP12, TP13, TP14 SLOU441 – July 2016 TPA3255EVM Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
- Page 18 Board Layouts, Bill of Materials, and Schematic www.ti.com TPA3255EVM Schematics The schematics for TPA3255EVM is illustrated in Figure Figure 7, and Figure TO DUT 22pF 10µF INA-RCA 10.0k RCA INPUT 10.0k 10.0k 10µF 22pF OUTA INA/AB 100k INPUT SE A...
- Page 19 1.00k 1.00k RESET RESET 1µF 100V RESET-SW FAULT FAULT CLIP_OTW FAULT Orange RESET-SW 1µF 0.1uF MONITORS 3.30k 100V TPS3802K33DCKR 0.1uF RESET Figure 7. TPA3255EVM Schematic 2 SLOU441 – July 2016 TPA3255EVM Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
- Page 20 +15V +12V +12V Green 1.50k 4.7µF 47µF 0.47µF 0.1uF LM2940IMP-12/NOPB 3.3V Green 3.3V +12V 3.3V OUTPUT OUTPUT 10µF 100µF TLV1117-33IDCY 3.3V Figure 8. TPA3255EVM Schematic 3 TPA3255EVM SLOU441 – July 2016 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated...
- Page 21 IMPORTANT NOTICE FOR TI DESIGN INFORMATION AND RESOURCES Texas Instruments Incorporated (‘TI”) technical, application or other design advice, services or information, including, but not limited to, reference designs and materials relating to evaluation modules, (collectively, “TI Resources”) are intended to assist designers who are developing applications that incorporate TI products;...
- Page 22 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TPA3255EVM...