How it Works
Texas Instruments
Loading...
TPA2037D1EVM
User Manual
7 pgs365.05 Kb0
Table of contents
Loading...

Texas Instruments TPA2037D1, TPA2037D1EVM User Manual

Download
User's Guide
SLOU266–December 2009

TPA2037D1 Audio Power Amplifier Evaluation Module

The TPA2037D1 is a 6-dB fixed-gain audio power amplifier evaluation module is a complete, low-power, Class-D, mono audio power amplifier capable of delivering 1.46 W into 8 Ω and 2.57 W into 4 Ω at 1% THD+N (YFF package). All components and the evaluation module are Pb-free. The TPA2037D1 evaluation module (EVM) consists of a TPA2037D1 device and all necessary components to evaluate it.
Contents
List of Figures

1 Introduction

This section provides an overview of the Texas Instruments (TI) TPA2037D1 NanoFree™ WCSP audio amplifier evaluation module (TPA2037D1EVM). It includes a brief description of the module and a list of EVM specifications.

1.1 TPA2037D1EVM Specifications

Supply voltage range, V Power supply current rating required 2.5 A Continuous output power, PO: 4-Ω BTL, VDD= 5 V, THD+N = 10% 3.24 W Audio input voltage, V Minimum load impedance, Z
DD
I
L

2 Operation

This section describes how to operate the TPA2037D1EVM.

2.1 Quick Start for Stand-Alone Operation

Use the following steps when operating the TPA2037D1EVM stand-alone or when connecting the EVM into existing circuits or equipment.
List of Tables
2.5 V to 5.5 V
0 V to V
DD
4 Ω
NanoFree is a trademark of Texas Instruments.
SLOU266–December 2009 TPA2037D1 Audio Power Amplifier Evaluation Module
Submit Documentation Feedback
Copyright © 2009, Texas Instruments Incorporated
1
Operation
2.1.1 Power and Ground
1. Ensure that the external power sources are set to OFF.
2. Set the power supply voltage between 2.5 V and 5.5 V. When connecting the power supply to the EVM, attach the ground connection to the GND header pin first, and then connect the positive supply to the VDD header pin. Verify that the connections are made to the correct header pins.
2.1.2 Inputs and Outputs
2.1.2.1 Audio
1. Ensure that the audio source is set to the minimum level.
2. Connect the audio source to the RCA input socket, IN. In case of differential audio input ensure that the jumper JP IN is not inserted. In case of a single-ended audio input ensure that the jumper JP IN is inserted, thereby grounding IN- through the input capacitor C2.
3. Connect a speaker (4 Ω-32 Ω) between the output banana jacks OUT+ and OUT-.
2.1.2.2 Enable Control
The TPA2037D1 has an active-high enable pin EN. A logic high on this pin places the device in the operating mode, and a logic low on this pin places the device in the shutdown mode. Press and hold pushbutton S1 on the EVM to place the TPA2037D1 in shutdown mode. Release pushbutton S1 to restart normal operation.
www.ti.com
2.1.2.3 Output filter
The TPA2037D1 EVM provides two test outputs TPOUT+ and TPOUT- between which a filtered version of the BTL output of the TPA2037D1 can be obtained by populating the filter components R4, R5, C9 and C10 (see Table 1 for typical components). The filtered output is useful in evaluating performance parameters of the TPA2037D1 using measurement equipment such as the Audio Precision.

2.2 Power Up

1. Verify the correct connections as described in Sections 2.1.1 and 2.1.2.
2. Verify the voltage setting of the power supply is between 2.5 V and 5.5 V, and turn on the power supply. Proper operation of the EVM begins.
3. Adjust the audio signal source as needed.
2
TPA2037D1 Audio Power Amplifier Evaluation Module SLOU266–December 2009
Copyright © 2009, Texas Instruments Incorporated
Submit Documentation Feedback
DB
DB
R5
R4
C9
C10
www.ti.com

3 Reference

This section includes the EVM PCB layout reference, schematic, and parts list.

3.1 TPA2037D1EVM PCB Layers

Reference
Figure 1. Top Layer
Figure 2. Bottom Layer
SLOU266–December 2009 TPA2037D1 Audio Power Amplifier Evaluation Module
Submit Documentation Feedback
Copyright © 2009, Texas Instruments Incorporated
3
Reference

3.2 TPA2037D1EVM Schematic Diagram

www.ti.com
Figure 3. TPA2037D1EVM Schematic Diagram
4
TPA2037D1 Audio Power Amplifier Evaluation Module SLOU266–December 2009
Copyright © 2009, Texas Instruments Incorporated
Submit Documentation Feedback
www.ti.com
Related Documentation From Texas Instruments

3.3 TPA2037D1 Audio Power Amplifier Evaluation Module Parts List

Table 1. TPA2037D1EVM Parts List
Part No. Description Size Qty. Vendor Part Number
U1 2.75W STEREO CLASS D AMP WCSP9-YFF 1 Texas Instruments , TPA2037D1YFF
TVS1, TRANSIENT VOLTAGE SUPPRESSION BIDIR 6.1V 2 ST Microelectronics, ESDALC6V1-1BT2 TVS2 9A SOD-882 ROHS
C7, C8 CAP SMD0603 CERM 1000PFD 100V 10% X7R 0603 2 Panasonic, PCC1952CT
C1, C2 CAP SMD0603 CERM 0.1UFD 25V 10% X5R 0603 2 AVX, 478-1244-1
C9, C10 CAP SMD0805 CERM 4700PFD 50V 5% X7R 0805 2 AVX, 478-3770-1
C3 CAP SMD0603 CERM 10UFD 6.3V 20% X5R 0603 1 Panasonic, PCC2395CT
C4 CAP SMD0402 CERM 0.1UFD 16V 10% X7R 0402 1 Taiyo Yuden, 490-3261-1
R1 RES 100K OHM 1/16W 1% SMD 0603 ROHS 0603 1 Panasonic, P100KHCT R4,R5 RES SMT0805 1.0K 5% 1/8W ROHS 0805 2 Panasonic, P1.0KACT R100, RES 0.0 OHM 1/16W 5% SMD 0603 ROHS 0603 2 Panasonic, P0.0GCT
R101 FB1,FB2 FERRITE CHIP, 220 OHMS 2A 100MHZ SMD 0603 0603 2 TDK, 445-1565-1
JP1 HEADER 2 PIN MALE, PCB STRAIGHT GOLD 1 Sullins, S1011E-02 2
IN JACK, RCA 3-PIN PCB-RA BLACK ROHS 1 Switchcraft, 65K7770 TP OUT+ PC TESTPOINT, RED, ROHS 1 Keystone Electronics, 5000K TP OUT- PC TESTPOINT, BLACK, ROHS 1 Keystone Electronics, 5001K S1 SWITCH, MOM, 160G SMT 4X3MM ROHS 1 E-Switch, EG4344CT JP1 SHUNT, BLACK AU FLASH 2mmLS 1 Norcomp Inc., SP2-001E GND,VDD, BINDING-POST,NONINS,THRU,ROHS 4 Emerson NPCS, J587
OUT +,OUT -
HW1,HW2, STANDOF ,4-40 0.5IN 3/16IN DIA ALUM RND F-F 4 Keystone, 2027K HW3,HW4
HW1,HW2, 4-40 SCREW, STEEL 0.250 IN 4 Building Fasteners, H34 HW3,HW4
ROHS
ROHS
ROHS
ROHS
ROHS
ROHS
ROHS
ROHS

4 Related Documentation From Texas Instruments

• TPA2037D1 Datasheet: 3.2 W Mono Class-D Audio Power Amplifier with 6-dB Gain and Auto
Short-Circuit Recovery.
SLOU266–December 2009 TPA2037D1 Audio Power Amplifier Evaluation Module
Submit Documentation Feedback
Copyright © 2009, Texas Instruments Incorporated
5
EVALUATION BOARD/KIT IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES
ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives.
Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or
services described herein.
Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. For additional information on TI’s environmental and/or safety programs, please contact the TI application engineer or visit www.ti.com/esh.
No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which such TI products or services might be or are used.
FCC Warning
This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. It generates, uses, and can radiate radio
frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference.
EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the input voltage range of 2.5 V to 5 V and the output voltage range of 0 V to 5.5 V. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions
concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM.
Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than 60°C. The EVM is designed to operate properly with certain components above 60°C as long as the input and output ranges are maintained. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified using the EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2008, Texas Instruments Incorporated
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in such safety-critical applications.
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:
Products Applications
Amplifiers amplifier.ti.com Audio www.ti.com/audio Data Converters dataconverter.ti.com Automotive www.ti.com/automotive DLP® Products www.dlp.com Broadband www.ti.com/broadband DSP dsp.ti.com Digital Control www.ti.com/digitalcontrol Clocks and Timers www.ti.com/clocks Medical www.ti.com/medical Interface interface.ti.com Military www.ti.com/military Logic logic.ti.com Optical Networking www.ti.com/opticalnetwork Power Mgmt power.ti.com Security www.ti.com/security Microcontrollers microcontroller.ti.com Telephony www.ti.com/telephony RFID www.ti-rfid.com Video & Imaging www.ti.com/video RF/IF and ZigBee® Solutions www.ti.com/lprf Wireless www.ti.com/wireless
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2009, Texas Instruments Incorporated
Loading...
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use