Texas Instruments SLOU082 Stereo Amplifier User Manual
Contents
1. Introduction 1 3 TPA032D03 Class D EVM Specifications Single in line header pins extend from the underside of the module circuit board to allow the EVM to either be plugged into the TI plug n play audio amplifier evaluation platform or to be wired directly into existing circuits and equipment when used stand alone The platform has room for a single TPA032D03 class D evaluation module and is a convenient vehicle for demonstrating Tl s audio power amplifier and related evaluation modules The EVM simply plugs into the platform which automatically provides power to the modules interconnects them correctly and connects them to a versatile array of standard audio input and output jacks and connectors Easy to use configuration controls allow the platform and EVMs to quickly model many possible end equipment configurations There is nothing to build nothing to solder and nothing but the speakers included with the platform to hook up 1 3 TPA032D03 Class D EVM Specifications 1 3 1 All measurements made with Vpp 12 V and R 24 Q unless otherwise noted Maximum Supply voltage range VDD sssesseee IRR 9Vto14V Supply current IDD erratas dida a etd ees dai 4 6A Continuous output power per channel BTL Po 1 eee ee ete 10W Continuous output power per channel headphones Po 32 O SE2. 50 mW Audio input voltage class D Vj 0c cece eee eh 350 mVrms Audio input voltage headphone V sssssssesssssssssslse ee eens 1 6 Vrms 1 3 2 Typical Supply current no input class D active IDD ssssssseesssssssse 55 mA Supply current no input headphone active IDD 2 eee eee eee eee eee 10 mA Supply current EVM mute class D active IDD 1 cece eee eee 2 5 mA Supply current EVM mute headphone active IDD ee eee cece ese 2mA Supply current EVM shutdown DD sssess RR 147 uA ICI ClAS Sa MERECE 25 dB Gain h adpbione iid erre eee ed Re e P RH ie 0 dB Crosstalk headphone Po 30 mW Q 1 kHz eee 70 dB Total harmonic distortion noise class D Po 1W 1kHZ 005 0 14 Total harmonic distortion noise headphone Po 30 mW O 1 kHz 0 3 Introduction Chapter 2 Quick Start Follow the steps in this chapter to quickly prepare the TPA032D03 mono class D audio amplifier EVM for use Using the TPA032D03 class D EVM with the TI plug n play audio amplifier evaluation platform is a quick and easy way to connect power signal and control inputs and signal outputs to the EVM using standard connectors However the audio amplifier evaluation module can be used stand alone by making connections directly to the module pins and it can be wired directly into existing circuits or equipment The platform switch and jumper settin
3. 0 000 cece eee eee eee eee 3 11 TPA032D03 Class D EVM Bottom Assembly 0 0c cece eee eee eens 3 11 TPA032D03 Class D EVM Top Layer 0 0 c cece cece e eee eens 3 12 TPA032D03 Class D EVM Second Layer 00 c cece eee eens 3 12 TPA032D03 Class D EVM Third Layer 0 00 cece eects 3 13 TPA032D03 Class D EVM Bottom Layer 000 c cece cece eens 3 13 Tables vi Typical TI Plug N Play Platform Jumper and Switch Settings for the TPAO32D03 Class D EVM 0 000 c cece eet teen eee 2 1 Platform Jumper and Switch Settings for the TPA032D03 0ee ee eee 2 3 Platform Jumper and Switch Settings for the TPA032D03 EVM Power Inputs 3 3 TPA032D03 Class D EVM Fault Indicator Table 0 0 0 0 cece cence nee 3 5 TPA032D03 Class D EVM Test Points 0 00 c cece esee 3 5 TPA032D03 Class D EVM Bill of Materials 0 00 0 cece eee eee 3 9 Chapter 1 Introduction This chapter provides an overview of the Texas Instruments TI TPA032D03 mono class D audio power amplifier evaluation module SLOP310 It includes a list of EVM features a brief description ofthe module illustrated with a pictorial diagram and a list of EVM specifications Topic Page di Eeature ONON 1 2 RED ES POE 1 3 1 3 TPA032D03 Class D EVM Specifications ooooooooooo 1 4 Feature Highlights 1 1 Feature Highlights The TI TPA032D03 mono cl
4. 30HNOS 2q 1r oon EH O 1 Power aaa In Out er od ov D r m o k iu Zf R1 an O ino 6 Signal Conditioning mo yoy 8er Y Speaker Output uO 000 O O 00000 F OO OO OOO Guiuonpuoo CAUTION Do not insert or remov EVM boards with powfr applied Headphone Output SVX4L Plug N Play Audio Amp Evaluation Platform SLOP097 Rev C 1 SLNAWNYLSNI 2 2 Quick Start Quick Start List for Platform 2 2 Quick Start List for Platform Follow these steps when using the TPA032D03 class D EVM with the TI plug n play audio amplifier evaluation platform see the platform user s guide SLOUO 11 for additional details Numbered callouts for selected steps are shown in Figure 2 1 and details appear in Chapter 3 J Platform Preparations 1 Ensure that all external power sources and platform power switch S1 are set to OFF 2 Install a TPA032D03 module in platform socket U2 taking care to align the module pins correctly EVM power pins engage sockets U2 and U3 Set switch S2 to OFF 3 Set switch S3 to U5 a A Set jumper JP6 to select the Mute control input 6 Table 2 2 Platform Jumper and Switch Settings for the TPAO32D03 POWERTVPE Wote2 ev sra es wpe 7 3e si 52009 5 Set control signa
5. with 100 kQ resistors connected to VDD 5 V A fault table is shown in Section 3 2 1 and in the device data sheet Details 3 8 TPA032D03 Class D EVM Bill of Materials Table 3 4 TPA032D03 Class D EVM Bill of Materials C1 C2 C15 C3 C4 C7 C8 C9 C12 C13 C23 C16 C17 C18 C5 C6 C10 C19 C20 C21 C22 Citt L1 L2 R1 R7 R10 R8 R9 R13 R14 TP1 TP3 J1 S1 S2 U1 TPA032D03 Class D EVM Bill of Materials The components in the bill of materials Table 3 4 were selected for their common values availability and the smallest size available to meet these criteria Capacitor Ceramic Chip 0 1 uF 10 50 V X7R Capacitor Ceramic Chip 1 uF 10 25 V X7R Capacitor Ceramic Chip 0 047 uF 10 50 V X7R Capacitor Ceramic Chip 5 6 pF 5 50 V COG Capacitor Ceramic Chip 1 nF 5 50 V COG Capacitor Ceramic Chip 10 uF 80 20 25 V Y5V Capacitor Aluminum Electrolytic Radial Lead 33 UF 20 35 V FC Series 80 mQ 100 kHz 175 ma Ripple 55 C to 105 C Capacitor Ceramic Chip 0 22 uF 10 50 V X7R Not assembled Inductor SMT 15 WH 20 2 2 ADC 47 2 mQ 1 kHz 20 to 90 C Resistor Thick Film Chip SMD 100 kQ 5 1 10 W 100 V 50 to 150 C 200 ppm C Resistor Thick Film Chip SMD 1 kQ 5 1 10 W 100 V 50 to 150 C 200 ppm C Resistor Thick Film Chip SMD 500 kQ 5 1 10 W 100 V 50 t
6. 03 EVM Board C ES 0003 sexe Sjueuinujsu Audio Line Inputs gt Left HP gt Input Note Capacitor C11 is optional not assembled and a location for it on the EVM PCB has been provided to increase design flexibility and allow decoupling capacitance to be added 3 7 1 Power Connections Power must be connected to both the VCC and VDD module pins Power supply ground can be connected to any module ground pin although best results are achieved if power supply grounds are connected to the pins adjacent to the VCC and VDD module pins The ground and power wires should be twisted to reduce inductance and noise pickup if they are long Details 3 7 Using The TPA032D03 Class D EVM Stand Alone 3 7 2 Input Connections The class D amplifier input signals can be connected in either of two ways differential or single ended For differential operation connect the signal source to the positive and negative inputs IN and IN module pins For single ended operation the input signal line should be connected to the IN module pin and the signal source ground
7. 3 class D EVM stand alone or to connect it into existing circuits or equipment Connections to the TPA032D03 module header pins can be made via individual sockets wire wrapping or soldering to the pins either on the top or the bottom of the module circuit board Power supply 1 2 3 Ensure that all external power sources are set to OFF Connect an external regulated power supply set to 12 V to the module VCC and GND pins taking care to observe marked polarity It is only necessary to use the ground pins adjacent to the module power pins Connect an external regulated power supply set to 5 V to the module VDD pin taking care to observe marked polarity Inputs and outputs 4 5 Ensure that audio signal source level adjustments are set to minimum Connect the audio source across the module IN and IN pins for class D operation taking care to observe marked polarity For single ended input the negative input pin IN should be connected to the ground of the audio signal source Connect a control signal to the module Mute pin if necessary The control signal should be high 2 V to 5 V or left floating for normal operation or low tied to ground to mute the output Connect a control signal to the module SD pin if necessary The control signal should be high 2 V to 5 V or left floating for normal operation or low tied to ground to shut down the TPA032D03 amplifier IC on the EVM Note that the control sig
8. CB Layers Figure 3 9 TPA032D03 Class D EVM Third Layer Details 3 13 3 14 Details
9. Class D EVM Schematic Diagram R3 R5 100k 100k i m TPA032D03 SHUTDOWN COSC MUTE AGND Mute TS 3 MODE AGND a w 3 TF 4 INN AGND n SSC 1uF 5 INP AGND C611000pF 6 COMP AGND 7 AGND ET C9 CLE 7 FAULT_0 1ouF tue VDD FAULT_1 vec a E 10 C22 L1 sire LOUT 15uH DH R13 C23 0 22uF PGND 500k tuF C21 12 12 PGND LOUT 0 22uF 154H our C12 ne OUTN 1 NN os C19 33uF d Hu TIP PVDD C20 33uF Gig 17 upREG di C18 18 5 6 pF 100k HPLOUT 100k 5 6 pF R2 100k LES pis ds C2 0 14F 20l anio RA CI ail eee 100k 0 1uF ao Ae HPDL C13 C15 cP 1 tuF 0 44F I C16 0 047uF t Capacitor C11 is optional not assembled and a location for it on the EVM PCB has been provided to increase design flexibility and allow decoupling capacitance to be added 3 10 Details TPA032D03 Class D EVM PCB Layers 3 10 TPA032D03 Class D EVM PCB Layers The following illustrations depict the TPA032D03 class D EVM PCB assembly and layers These drawings are not to scale Gerber plots can be obtained from any TI Sales Office Figure 3 5 TPA032D03 Class D EVM Top Assembly SLOP310 TPA032D03 EVM Board GND VCC ili Mm di 0007 Sjueuinajsu sDxaL Oo Mute S2 10 E Cc3 FO mmic oi uR2 Details 3 11 TPA032D03 Class D EVM PCB Layers Figure 3 7 TPAO32D03 Class D EVM Top Layer a unt i Figure 3 8 TPA032D03 Class D EVM Second Layer 3 12 Details TPA032D03 Class D EVM P
10. Maximum Voltage Always ensure that the polarity and voltage of the external power connected to Vcc power input connector J1 J2 and or Vpp power input connector J6 are correct Overvoltage or reverse polarity power applied to these terminals can open onboard soldered in fuses and cause other damage to the platform installed evaluation modules and or the power source Inserting or Removing EVM Boards Do not insert or remove EVM boards with power applied damage to the EVM board the platform or both may result Figure 3 1 The TI Plug N Play Audio Amplifier Evaluation Platform DC Power In Out Power Input Sm SR O 2 3l e ols o id o o o Speaker p Output 2 9o i l 3 O O o0 4 lo S JO 2 Q n ALTION Do not insert or remove EVM boards with power applied 22m 33 Headphone 7 Output Plug N Play Audio Amplifier Evaluation Platform SLOP097 Rev C 1 SLNAWNYLSNI 3 2 Details Plug N Play Platform Power Requirements and Connections 3 2 Plug N Play Platform Power Requirements and Connections The TPA032D03 mono class D audio power amplifier evaluation module is designed to operate from a supply voltage between 9 V and 14 V For best performance the module should be operated at 12 V The TI plug n play audio amplifier eva
11. TPAO32D03 Mono Class D Audio Power Amplifier With Stereo Headphone Amplifier Evaluation Module User s Guide September 2000 Mixed Signal Products SLOU082 IMPORTANT NOTICE Texas Instruments and its subsidiaries Tl reserve the right to make changes to their products or to discontinue any product or service without notice and advise customers to obtain the latest version of relevant information to verify before placing orders that information being relied on is current and complete All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment including those pertaining to warranty patent infringement and limitation of liability TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty Specific testing of all parameters of each device is not necessarily performed except those mandated by government requirements Customers are responsible for their applications using Tl components In order to minimize risks associated with the customer s applications adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards Tl assumes no liability for applications assistance or customer product design TI does not warrant or repr
12. ao 3 5 3 5 TPA032D03 Class D EVM Test Points 0 0 0 ccc cece cece ee 3 5 3 6 Module Switches 0 0 ce tenet RR en 3 6 30 1 3S I SNUG OWN d nez ad al tia iaa 3 6 3 62 S2 MULE SWIICLi ich nono data ta he acl a e man e eee 3 6 3 7 Using The TPA032D03 Class D EVM Stand Alone 0 0 00 cece eee ens 3 7 3d PowerGConnections x iad cicada ds eda era RE ea E Rd dor dva a ed E dn rd eds 3 7 3 7 2 Input Connections oococccccccccccc eee nn 3 8 9 59 Output Connections iiaeiai ai optet danger a eater i 3 8 3 7 4 Controls and Indicators 0 0 cee ee 3 8 3 8 TPAOS2DO03 Class D EVM Bill of Materials llle 3 9 3 9 TPA032D03 Class D EVM Schematic sllslsseeeeee eene 3 10 3 10 TPA032D03 Class D EVM PCB Layers ssssssssssseses en 3 11 Figures LP ea 00 Y O CO Ge GO sl pt sl cal C GO GO Eu ci cd IN o The TI TPA032D03 Mono Class D Audio Power Amplifier EVM Top View 1 3 The TI TPA032D03 Mono Class D Audio Power Amplifier EVM Bottom View 1 3 Quick Start Platform Map ssssssssssssessse n 2 2 The TI Plug N Play Audio Amplifier Evaluation Platform ooococoocccoccooooo 3 2 Typical Headphone Plug 0 00 cece cece e nnn 3 4 TPA032D03 Class D EVM Stand Alone Connections for Mono BTL Output 3 7 TPA032D03 Class D EVM Schematic Diagram 00 cece eee eee 3 10 TPA032D03 Class D EVM Top Assembly
13. ass D audio power amplifier evaluation module and the TI plug n play audio amplifier evaluation platform include the following features TPA032D03 Mono Class D Audio Power Amplifier with Stereo Head phone Amplifier Evaluation Module Internal depop circuitry to greatly reduce turn on transients in outputs Single channel class D bridge tied load BTL only operation 12 V operation 10 W BTL output into 4 Q at 12 V Low current consumption in shutdown mute mode 20 uA 10 mA Internal gain set to 25 dB IC shutdown mute and mode control inputs TTL logic level High efficiency Class AB stereo headphone driver capable of 50 mW into 32 Q Onboard stereo headphone output jack CE tested and approved Quick and Easy Configuration With the TI Plug N Play Audio Amplifier Evaluation Platform Evaluation module is designed to simply plug into the platform automatically making all signal control and power connections Platform provides flexible power options Jumpers on the platform select power and module control options Switches on the platform route signals Platform provides quick and easy audio input and output connections Platform Power Options External 5 V 15 V Vcc supply inputs External regulated Vpp supply input Socket for onboard 5 V 3 3 V Vpp voltage regulator EVM Onboard overvoltage and reverse polarity power protection Q Platform Audio Input and Output Connections Left and right RCA phono jack inp
14. e control input pin also allows external control of this function In the mute mode the amplifier IC lowside output transistors are turned on shorting the load to ground This reduces the EVM current to 2 5 mA 3 6 3 J1 Headphone Jack Mode Switch 3 6 EVM headphone jack J1 is equipped with an internal switch that grounds the amplifier MODE pin untila plug is inserted into the jack When a plug is inserted into the headphone jack the IC MODE pin goes high and the IC headphone amplifier goes active and the class D amplifier shuts off Details Using The TPA032D03 Class D EVM Stand Alone 3 7 Using The TPA032D03 Class D EVM Stand Alone Using the TPA032D03 mono class D audio power amplifier evaluation module stand alone is much the same as using it with the platform The same 9 V to 14 V power supply range and the isolated OUT and OUT lines for BTL operation requirements exist Inserting a plug into the EVM headphone jack switches the EVM to the headphone mode and shuts down the class D amplifier section Figure 3 3 shows the connections that are required for operation with the exception of the fault monitor circuit which is optional The discussion in this section is in reference to this figure unless otherwise noted Figure 3 3 TPA032D03 Class D EVM Stand Alone Connections for Mono BTL Output FED d 12V 5V Fault Monitor Headphone Output Jack Right HP Input Re R LEDO 3 SLOP310 TFA032D
15. esent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right of TI covering or relating to any combination machine or process in which such semiconductor products or services might be or are used Tl s publication of information regarding any third party s products or services does not constitute Tl s approval warranty or endorsement thereof Copyright 2000 Texas Instruments Incorporated Preface Related Documentation From Texas Instruments B TiPlug N Play Audio Amplifier Evaluation Platform T Literature Number SLOU011 provides detailed information on the evaluation platform and its use with TI audio evaluation modules B 7PA032D03 CLASS D AUDIO POWER AMPLIFIER TI Literature Number SLOS283 This is the data sheet for the TPA032D03 audio amplifier integrated circuit B Design Considerations for Class D Audio Power Amplifiers TI Literature Number SLOA031 This application report provides detailed information on designing audio power amplifier systems using TI class D amplifier ICs B Reducing and Eliminating the Class D Output Filter TI Literature Number SLOAO023 This application report covers output filter theory and design for class D audio power amplifiers FCC Warning This equipment is intended for use in a laboratory test environment only It generates uses and can radiate radio frequency energy and has not been tested for co
16. f device performance and design adjustments Table 3 3 lists each test point and its corresponding function Table 3 3 TPA032D03 Class D EVM Test Points TEST IC PIN or EVM POINT FUNCTION FUNGTION HPVCC Onboard 5 V supply FAULT 1 MSB for logic level fault output signal open drain FAULT 0 LSB for logic level fault output signal open drain Details 3 5 Plug N Play Platform Inputs and Outputs 3 6 Module Switches 3 6 1 The TPA032D03 mono class D audio amplifier evaluation module is equipped with two pushbutton switches that allow the module shutdown and mute functions to be manually activated S1 Shutdown Switch To have the module amplifier IC enter the shutdown mode press the Shutdown switch S2 on the module S2 connects the amplifier IC SHUTDOWN pin to ground forcing it into a low power state This function can be controlled by an external control input to the SD module pin The shutdown mode reduces the amplifier IC current consumption to less than 1 uA compared to approximately 2 5 mA in the mute mode The EVM shutdown current is based on Voc Vpp R2 R5 and R6 and capacitor leakage currents but will typically be 97 uA 5 for Vcc 12 V and Vpp 2 5 V The plug n play platform typically draws 60 mA of current 3 6 2 S2 Mute Switch Pushbutton switch S1 on the TPA032D03 class D EVM allows manual muting of the amplifier IC S1 connects the amplifier IC MUTE pin to ground muting the output The EVM Mut
17. gs shown in Table 2 1 are typical for the TPA032D03 class D EVM There are no jumpers or switches to set on the TPA032D03 class D EVM board itself Table 2 1 Typical TI Plug N Play Platform Jumper and Switch Settings for the TPA032D03 Class D EVM aes ues ser ves si 52003 VCC J1 ON OFF OFF AC DC J2 OFF OFF Notes 1 ON Jumper installed OFF Jumper NOT Installed X Don t care 2 Install a voltage regulator EVM SLVP097 in platform socket U6 for VDD power to EVM control inputs 3 Set to ON when Tone Control Board SLOP109 is installed in U1 otherwise set to OFF Topic Page A A O e 2 2 2 2 Quick Start List for Platform esee nnn 2 3 2 3 Quick Start List for Stand Alone eeeee eene 2 5 2 1 Precautions 2 1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external power connected to Vcc power input connector J1 J2 and or Vpp power input connector J6 are correct Overvoltage or reverse polarity power applied to these terminals can open onboard soldered in fuses and cause other damage to the platform installed evaluation modules and or the power source Inserting or Removing EVM Boards Do not insert or remove EVM boards with power applied damage to the EVM board the platform or both may result Figure 2 1 Quick Start Platform Map Lar m Zdr Edf
18. l Polarity jumper JP8 to Lo Notes 1 ON Jumper installed OFF Jumper NOT Installed X Don t care 2 Install a voltage regulator EVM SLVP097 in platform socket U6 for VDD power to EVM control inputs 3 Set to ON Tone Control Board SLOP109 is installed in U1 UY Power supply 7 Connect a 12 V regulated power supply ensure power supply is set to OFF to J1 taking care to observe marked polarity 8 Set jumper JP1 for dc source to be from input J1 9 Set jumper JP4 for VCC power to EVMs 10 Install a voltage regulator EVM SLVP097 in platform socket U6 11 Set jumper JP5 for VDD power to EVMs Inputs and outputs 12 Ensure that the audio signal source level is set to minimum 13 Connect the audio source to left and right RCA phono jacks J3 and J5 or mono miniature phone jack J4 14 Connect 4 Q 8 O speakers to left RCA jack J9 or to stripped wire speaker connectors J8 Y Power up 15 Verify correct voltage and input polarity and set the external power supply and platform power switch S1 to ON Platform LED1 and LED2 should light indicating the presence of VCC and VDD and the evaluation module s installed on the platform should begin operation 16 Set switch S2 to ON if tone control board SLOP109 is installed in U1 17 Adjust the signal source level as needed Quick Start 2 3 Quick Start List for Stand Alone 2 3 Quick Start List for Stand Alone 2 4 Follow these steps to use the TPA032D0
19. luation platform provides several options for powering the TPA032D03 class D EVM Table 3 1 shows the platform jumper and switch settings for each power source option see the User s Guide for the TI plug n play audio amplifier platform TI Literature Number SLOUO11 for more information The TPA032D03 class D EVM requires no setup for power source selection Table 3 1 Platform Jumper and Switch Settings for the TPAO32D03 EVM Power Inputs POWER TYPE Note 2 ae 982 ues ua ses es we s Si szee 5 55 Notes 1 ON Jumper installed OFF Jumper NOT Installed X Don t care 2 Install a voltage regulator EVM SLVP097 in platform socket U6 for VDD power to EVM control inputs 3 Set to ON when Tone Control Board SLOP109 is installed in U1 otherwise set to OFF Although the TPA032D03 amplifier IC draws approximately 1 6 A from the power supply during continuous full power output peak current draw can be as high as 2 3 A Any power supply connected to the platform should be capable of providing 2 3 A peak to avoid clipping of the output signal during voltage peaks Current consumption driving speakers at normal listening levels is typically 0 1 A or less A Vpp supply of 5 V is required for normal operation of the TPA032D03 EVM Vpp can either be applied to the platform Vpp power input terminals J6 or a voltage regulator SLVP097 or equiv can be installed in platform socket U6 to provide Vpp from the platform Vcc su
20. mpliance with the limits of computing devices pursuant to subpart J of 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 Trademarks PowerPAD is a trademark of Texas Instruments 1 Contents INTFOGUGTION ccr 1 1 1 1 Feature Highlights ssssssssssesseees teens 1 2 1 2 Description uere are od abe e inte He dane bdo 1 3 1 3 TPA032D03 Class D EVM Specifications 00 0 eee 1 4 oreo ME MBE NERE ee 1 4 E TYDE p TEM 1 4 QUICK Sabian a away beam ar ais ate vas warmed ahem area aie A eta a EEOAE 2 1 2 1 Pr6CAUTIONS 2e adnexa e Be devine thet ds get ene Bre Up Nal dey d 2 2 2 2 Quick Start List for Platform 0 0 cence een nee eens 2 3 2 3 Quick Start List for Stand Alone 1 2 0 cece een en 2 4 Details iii Mm 3 1 3 1 Pre CAUTIONS ia E Tea il 3 2 3 2 Plug N Play Platform Power Requirements and Connections 3 3 3 3 Plug N Play Platform Inputs and Outputs 0 00 eee eee eee 3 4 Bil Inputs sce sesvexte com REE dik tede A A HER EDER AAS 3 4 392 Outputs 2 neva deeds Di a bbe leeds A 3 4 3 4 Control and Indicator Circuits ooooocoooncononnnonnaonar
21. nals applied to the EVM Mute and SD inputs must have sufficient current capability to overcome the 100 kQ pullup resistor on each input Miniature pushbutton switches on the EVM allow manual shutdown S2 and manual muting S1 of the amplifier 8 Connect a 4 Q 8 O speaker to the module OUT and OUT pins taking care to observe marked polarity Y Power up 9 Verify correct voltage and input polarity and set the external power supply to ON The EVM should begin operation 10 Adjust the signal source level as needed Quick Start Chapter 3 Details This chapter provides details on the TPA032D03 IC evaluation module a parts list for the TPAO32D03 class D evaluation module and module PCB layer illustrations Topic Page cal Precautions me eters 3 2 3 2 Plug N Play Platform Power Requirements and Connections 3 3 3 3 Plug N Play Platform Inputs and Outputs 3 4 3 4 Control and Indicator Circuits Fe mo 3 5 3 5 TPAO032D03 Class D EVM Test Points Llueeeeese 3 5 3 6 Module Switches 9 Re E ETIN RETE 3 6 3 7 Using The TPA032D03 Class D EVM Stand Alone 3 7 3 8 TPAO032D03 Bill of Materials lseeueeeeeeese 3 9 3 9 TPAO032D03 Class D EVM Schematic Luuuuuuuee 3 10 3 10 TPA032D03 Class D EVM PCB Layers 3 11 3 1 Precautions 3 1 Precautions Power Supply Input Polarity and
22. o 150 C 200 ppm C Resistor Thick Film Chip SMD 150 kQ 5 1 10 W 100 V 50 to 150 C 200 ppm C Test Points Red Mini Phone Jack 3 5 mm N C Stereo Header Pins Gold Single 0 5 Long 0 25 Wide 0 100 centers Switch Momentary Push Button 12 VDC 50 mA IC Audio Amplifier Class D 10 W 48 pin DCA pkg 0805 1206 0805 0603 0805 1210 0 197 x 0 0197 x 0 078 1206 0 492 x 0 0236 x 0 197 0 398 x 0 398 x 0 236 0603 0603 0603 0603 0 512 x 0 472 0 5 0 25 0 1 0 291 x 0 138 x 0 134 TSSOP48 EVM Qty 3 Manufacturer Part Number Kemet C0805C104J5RAC Kemet C1206C105K3RAC Kemet C0805V473K5RAC Kemet C0603C569J5GAC Kemet C0805C102J5GAC muRata GRM235Y5V106Z25 Panasonic EEUFC1V333 Kemet C1206C224K5RAC TDK SLF10145T 150M2R2 Vishay Dale CRCWO0603104J Vishay Dale CRCWO0603101J Vishay Dale CRCWO0603504J Vishay Dale CRCW0603154J Farnell 240 345 Mouser 161 3504 Samtec TSW 19 8 G S Panasonic EVQ PJS04K TI TPA032D03DCA t Capacitor C11 is optional not assembled and a location for it on the EVM PCB has been provided to increase design flexibility and allow decoupling capacitance to be added Details 3 9 TPA032D03 Class D EVM Schematic 3 9 TPA032D03 Class D EVM Schematic The TPA032D03 class D EVM schematic is shown in Figure 3 4 Figure 3 4 TPA032D03
23. pply The platform is equipped with overvoltage and reverse polarity supply voltage input protection in the form of fused crowbar circuits U Vpp voltage applied to platform screw terminals J6 MUST NOT exceed the absolute maximum rating for the TPA032D03 amplifier IC installed on the evaluation module 5 5 V or damage to the IC may result In no case should Vpp voltage of the incorrect polarity or in excess of 6 0 V be applied to screw terminals J6 of the platform or the power protection circuit on the Vpp line will trip O Vcc voltage applied to the platform MUST NOT exceed the maximum voltage input specified for the voltage regulator module installed in socket U6 12 V for the SLVP097 or damage to the voltage regulator module may result In no case should Vcc voltage applied to the platform exceed 15 V or the overvoltage protection circuit on the Vcc bus will trip Details 3 3 Plug N Play Platform Inputs and Outputs 3 3 Plug N Play Platform Inputs and Outputs 3 3 1 3 3 2 Outputs Inputs The TI plug n play audio amplifier evaluation platform is equipped with several standard conectors for audio inputs and outputs In most cases audio signals enter the platform through either a pair of RCA phono jacks J3 and J5 or a miniature 1 8 mono phone jack J4 Certain signal conditioning and amplifier EVMs however may have additional signal input connectors mounted on the module circuit board The platform audio signal in
24. put jacks J3 J4 and J5 are of the closed circuit type grounding the signal input lines when no plugs are inserted Amplified audio output signals leave the platform through the left RCA phono jack J9 and the left pair of compression connectors for stripped speaker wires J8 The audio output lines from the power amplifiers are separate all the way to the edge of the platform output jacks J8 and J9 the OUT and OUT lines from the power amplifier sockets are not tied to each other or to platform ground This allows the TPA032D03 class D power amplifier EVM to operate in the highly efficient bridge tied load configuration when driving speakers The headphone jack J10 is capacitively coupled to source select switch S3 which connects J10 to the output lines of either the headphone amplifier socket or the power amplifier sockets Figure 3 2 Figure 3 2 Typical Headphone Plug 3 4 Left Right GND Details Plug N Play Platform Inputs and Outputs 3 4 Control and Indicator Circuits Three main control circuits are provided with the TPA032D03 The mute circuit grounds the output of the active amplifier the mode circuit selects between the class D amplifier and the headphone amplifier and the shutdown circuit places the entire device into a power saving sleep mode to minimize current consumption Each of these inputs is TTL compatible less than 0 8 V applied to these pins is considered a logic low and any voltage greater
25. than 2 V is considered a logic high Two indicator pins are also provided for feedback when an under voltage or thermal fault exists Module pins are provided for easy connection of off board control and monitoring There are two active low fault indicator pins on the TPA032D03 amplifier IC IC pins 41 and 42 that provide feedback when a fault condition exists Signals on these pins provide the status of the acvtive amplifier operational thermal fault and under voltage lockout Table 3 2 lists the possible output conditions of these pins and a description of the fault indicated Table 3 2 TPA032D03 Class D EVM Fault Indicator Table FAULT 0 FAULT 1 D 1 2 DESCRIPTION No fault The device is operating normally SHUTDOWN or the power supply Thermal fault All of the low side transistors are turned on shorting the load to ground Once the junction temperature drops by 20 C normal operation resumes not a latched fault The Fault indication remains active until cleared by cycling MUTE SHUTDOWN or the power supply Charge pump under voltage lockout VCP UV fault All low side transistors are turned on shorting the load to ground Normal operation resumes when the charge pump voltage is restored not a latched fault however the Fault indication remains active until cleared by cycling MUTE 3 5 TPA032D03 Class D EVM Test Points Test points have been included on the TPA032D03 class D EVM to facilitate user analysis o
26. uts Miniature stereo phone jack input Left and right RCA phono jack outputs Left and right compression speaker terminal outputs Miniature stereo headphone jack output Introduction Description 1 2 Description The TPA032D03 mono class D audio power amplifier evaluation module is a complete 10 W mono audio power amplifier It consists of the TI TPA032D03 mono class D audio power amplifier IC along with a small number of other parts mounted on a circuit board that measures approximately 2 inches by 1 inches Figure 1 1 and 1 2 Figure 1 1 The TI TPA032D03 Mono Class D Audio Power Amplifier EVM Top View SLOP310 TPAO32D03 EVM Board GND VCC O O ES 0003 sexe O Sjueuinujsu O PON LY dH1 UND NI 0000 E O O O VDD GND VCC Note Capacitor C11 is optional not assembled and a location for it on the EVM PCB has been provided to increase design flexibility and allow decoupling capacitance to be added Figure 1 2 The TI TPA032D03 Mono Class D Audio Power Amplifier EVM Bottom View
27. wire should be connected to the IN module pin The EVM headphone amplifier inputs are single ended and the signal source should be connected to the RHP and LHP module pins For best results the ground of the signal source should be connected to the module GND pins at the EVM headphone inputs to provide a return path for the current The input signal and ground wires should be twisted to reduce inductance and noise pickup if the lead lengths are long and the cable is not shielded 3 7 3 Output Connections The speaker should be connected between the OUT and the OUT module pins Inserting a plug into the EVM headphone jack switches the EVM to the headphone mode and shuts down the class D amplifier section 3 7 4 Controls and Indicators 3 8 The mute mode and shutdown functions may be controlled externally via the module Mute Mode and SD pins An active low input to the module Mute pin mutes the selected amplifier An active low input to the module Mode pin switches the EVM to the class D mode and shuts off the headphone amplifier An active low input to the module SD pin shuts down the device A signal of 2 V or higher allows normal operation Note that the mute mode and shutdown signals applied to the EVM control input pins must be able to supply enough current to overcome the pullup resistor on the module 100 kQ The fault indicator circuit can be monitored at FAULTO TP1 and FAULT1 TP2 These are open drain outputs
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