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TPA1517DWP Audio Power Amplifier Evaluation Module
DATA MANUAL: SLOU008
Date: July 1997
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Copyright (c) 1999, Texas Instruments Incorporated
Read This First
About This Manual
The purpose of this document is to serve as a reference manual for the TPA1517DWP 6 Watt/Channel Stereo Audio Power Amplifier Evaluation Module (SL0P106). This document provides information on the optimal setup and operation of this product.
How to Use this Manual This document contains the following chapters: Chapter 1 Overview
A general description of the TPA1517DWP, its key features, operating specifications, and design notes.
Chapter 2
Hardware
A description of the TPA1517DWP, hardware including board schematic, connections, layout and bill of materials.
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Contents
I. Quick Start ..................................................................................................................................6 1.1 Introduction ................................................................................................................................7 1.2 Layout Definition ........................................................................................................................7 1.3 Operation Notes..........................................................................................................................8 2.1 Schematic .................................................................................................................................10 2.2 Input/Output Connections .........................................................................................................11 2.3 Controls ....................................................................................................................................12 2.4 Layout .....................................................................................................................................13 2.5 Bill of Materials ........................................................................................................................15
Figures
FIGURE 1. TPA1517DWP COMPONENT PLACEMENT.............................................................. 7 FIGURE 2. TPA1517DWP EVM SCHEMATIC........................................................................ 10 FIGURE 3. INPUT/OUTPUT CONNECTIONS.............................................................................. 11
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1. Quick Start with P-N-P Kit Included below is a quick checklist of setup steps to get the TPA1517DWP up and running fast. 1. Set S1 to the "off" position. 2. Align the TPA1517DWP with socket U2, such that the side with 4 pins is adjacent to socket U1, and firmly connect it to the P-n-P board. 3. Check the power supply jumper setting on the P-n-P board. To use battery power select JP3, to select wall mount AC/DC power select JP2, or to use a bench type DC power supply select JP1 Note: be sure only one of these three jumpers is connected by a shorting block. 4. Check the mode/mute jumper circuitry (JP6, JP7, JP8). To begin with, set JP7 to Lo, JP8 to Lo and JP6 to Mute. This arrangement causes the TPA1517DWP to be active when no headphones are present. In the future refer to Table 1 in the P-n-P board Application Report (SLOU001) to adjust these settings. 5. Check the Audio Input Path Selection Circuitry, if there is no EVM present in U1, then set S2 to the "off" position 6. Set S3 to the "U5" position (only if U5 EVM is present) 7. Connect a mono audio source to either J3 or J5 (or both), or connect a stereo audio source to J4. 8. Connect 4 or 8 speaker(s) to either (or both of) the RCA jacks at J7 and J9 or to the wire clips at J8. 9. Connect your power supply to the P-n-P board. 10. Push S1 to the "on" position, and activate your audio source. Step 10 will activate the EVMs present on the P-n-P. If you do not hear sound, please consult the troubleshooting section of the P-n-P Board application report (SLOU001).
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Introduction
1.1 Introduction The TPA1517DWP EVM (SLOP106) is designed to provide the circuitry required to evaluate the TPA1517DWP performance without having to invest in a PCB layout or assembly. Refer to the application note in the TPA1517 data sheet (SLOS162A) for a description of the circuit configuration and selection of components. 1.2 Layout Description
Figure 1 - TPA1517DWP
Lit. # SLOP106
C8 RIN R1 GND C1
GND +12V Q2
ROUT GND GND R3 S1 Q1 C7 R4 R5 R7 MUTE S3 R10 GND GND LOUT
+
C4 C6 R6 R8
+
S2 U1 TPA1517 D1 C3 R11 D2
GND R2 LIN C2 C5
R9
+
TPA1517DWP SAMPLE EVM REV. A
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Layout Definition
TPA1517
U1 - TPA1517PWP stereo 5 W Audio Amplifier Q1, 2 -Transistor, FMMT3904 C1, 2, 6, 7 - Capacitor, 1.0 F, Ceramic C3, 4 - Capacitor, 470 F 16 V Alum Elect C5 - Capacitor, 2.2 F, Ceramic C8 - Capacitor, 100 F, 25 V Alum Elect R1, 2 - Potentiometer, 50 k, 3/4 Turn R3, 4, 9 - Resistor, 10 k Carbon R5, 6 - Resistor, 47 k Carbon R7, 10 - Resistor, 1 k Carbon R8, - Resistor, 6.8 k Carbon R11 - Resistor, 220 Carbon S1, 2, - Jumper S3, - Switch, Norm Open, Momentary
1.3 Operation Notes The TPA1517DWP EVM (SLOP106) was designed to plug into TI's P-n-P Audio Evaluation Platform (SLOP097). Slot U2 on the P-n-P is compatible with the TPA1517DWP EVM. No soldering is required for use in the P-n-P system. Standard speaker jacks, RCA jacks and 1/8" headphone jacks are provided on the P-n-P for quick and easy evaluation of all TI TPA series audio power amplifiers. The TPA1517 is designed to drive 4 ohm speakers up to 6 W.
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Operation Notes
The connection pins of the TPA1517DWP EVM are on a 0.1" grid for easy interface to standard plugboard based prototype systems. The thermal layout of the EVM is important. Linear Audio Power Amplifiers dissipated large amounts of heat during operation. The data sheet for the TPA1517 (SLOS162A) details heat dissipation for 12 and 14.5 volt operations. The PowerPADTM package has an exposed thermal pad on the underside of the IC. This pad must be thermally connected to as much copper area as possible on the surface of the PCB or to internal ground planes. Special consideration should be given to the thermal layout due to the effect on maximum ambient temperature operation. It is recommended to place a copper area under the IC equal to the flat area of the IC body. This copper area should then be connected to the ground plane layer by vias. The vias should not use WEBed connections but should have a solid connection to the copper areas. The solid connections make a much better thermal connection
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Schematic
2.1 Schematic
PUMP UP THE VOLUME
TPA1517DWP EVM Circuit SLOP106 V GND
CC
C8 100 uF Audio Input (RIN) R1 50 k C1 1 uF
C3 470 uF
Out Right GND
C6 1 uF
D1 1N914 VCC
*
GND/HS GND/HS 20 19 18 17 16 15 14 13 In 2 + M/SB NC VCC Vo 2 NC Vo 2
*
12 PGND
*
GND/HS GND/HS 11
R3 10 k R6 47 k
R4 R5 10 k 47 k Q1,2 FMM T 3904CT
R7 1k Mute/STBY TTL (Mute) S3 Mute R 10 1k C7 1 uF
PGND
SVRR
SGND
In 1 +
Vo 1
Vo 1
NC
NC
R8 6.8 k
R9 10 k
10
1
2
3
4
5
6
7
8
9
S1 M/SD R11 220 S2 depop
*
Audio Input (LIN) R2 50 k C2 1 uF
C5 2.2 uF
*
D2 1N914
*
C4 470 uF
Out Left GND
= Ground Plane (*)
= Signal Ground
04/19/9
Figure 2 - Schematic of 1517PWP EVM
Power: 9.5 to 15 Vdc, 2.5 A peak, 0.5 A rms (Normal Music Input). Audio Inputs: Stereo, Cap Coupled Speaker Outputs: 4 ohm drive, 3 W rms/Channel (Tone Output) 8 ohm drive, 1.5 W rms/Channel (Tone Output)
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Input/Output Connections
2.2 Input/Output Connections
TPA1517DWP EVM Hookup Diagram
9.5 V to 15 V DC
TPA
+
Power Supply
C1 10 uF
PUMP UP THE VOLUME
-
Lit. # SLOP106
C8 RIN
GND +12V Q2
+
R1 C4 C1 C6 R6 R8
Audio Input
GND
ROUT GND GND R3 S1 Q1 C7 R4 R5 R7 MUTE
+
S2 U1 TPA1517 D1 C3 R11 D2
GND R2 C2 C5
R9
Standard 1/8" Stereo Jack
+
LIN
S3 R10
TPA1517DWP SAMPLE EVM REV. A
GND GND LOUT
S1 - In = Shutdown Mode, Out = Mute Mode S2 - In = Depop Enhance Mode, Out = Depop Off S3 - Press and hold to Mute/Shutdown (according to S1 setting). R1, 2 - Volume Control, 3/4 Turn, Full Clockwise = Maximum Volume
04/19/97
Figure 3. EVM Connections Diagram
The connections diagram shows a stereo output drive system using the TPA1517DWP EVM (SLOP106) configured to drive stereo speakers. A standard 1/8" stereo input jack is shown providing a convenient connection to CD players or other commercial sources of audio signals. Key Features: 1) Stereo Single Ended (SE) drive of 4 ohm or 8 ohm speakers. The input and output coupling capacitors are included on the EVM which makes EVM hookup very simple. 2) Mute of the Speaker Drive - Either pressing the Mute switch or providing an external TTL control of the Mute input allows one to mute the speaker output. 3) The PowerPAD package is thermally connected the PCB ground plane for enhanced thermal performance
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Controls
2.3 Controls
Mute/Standby Select - S1: Jumper in place sets low current standby mode. Jumper out sets mute mode. Mode is activated by Switch S3 or external TTL input at Mute input. Depop Select - S2: Jumper in place selects enhanced Depop mode. Jumper out disables depop circuitry. Mute Input/Switch - S3: Low activates mute/standby (S1) circuitry. Switch S3 is a momentary action push button. Press S1 to mute. R1/R2 Gain Control Pots: 3/4 turn adjusts amplifier Volume. Clockwise increases volume. The M/SB pin of the IC (PIN 17) operates over a range of voltages. 0 to 2 volts is standby mode, 3.4 to 8.8 volts is mute mode and 9.2 to Vcc is operate mode. Transistors Q1 and Q2 form a network to allow TTL control of the M/SB function. S1 determines the active voltage range of the transistor circuit into M/SB. When S1 is in place transistor Q2 pulls M/SB to 0 volts (Standby mode), when S1 is out, resistor R8 forms a divider network with R3 to set the voltage in the Mute range. Typically mute mode pop noises are not as loud as standby mode pops. Diodes D1 and D2 when enabled by S2 allow the charge on the output coupling caps to drain during standby mode. This helps reduce pop noises when returning to operating mode.
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Board Layout
2.4 Layout
NOTE: Layouts are not to scale.
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NOTE: Layouts are not to scale.
14
Bill of Materials
2.5 Bill of Materials
DESCRIPTION REF. DESIG. C1,C2, C6, C7 C5 C3,C4 PCBA MANUFACTURER Qty 4 DIGI KEY/NEWARK PART NUMBER PART NUMBER (MURATA) (NEWARK) GRM4293F2254 6Y5V105Z16BL (TDK) C3216X5R1A225 (PANASONIC) (DIGI-KEY) ECE-A1CF471 P6708-ND (PANASONIC) ECE-A1CF101 (BOURNS) 3323P- 50K (PANASONIC) ERJ-6GEYJ103V (PANASONIC) ERJ-6GEYJ102V (PANASONIC) ERJ-6GEYJ103V (PANASONIC) ERJ-6GEYJ473V (PANASONIC) ERJ-6GEYJ221V (PANASONIC) 8048SCT-ND or EVQ-PJS04K (NORCOMP) (DIGI-KEY) P6705-ND (DIGI-KEY) 3323P-503-ND (DIGI-KEY) P10KACT-ND (DIGI-KEY) P1.0KACT-ND (DIGI-KEY) P6.98KCCT-ND (DIGI-KEY) P47KACT-ND (DIGI-KEY) P221ACT-ND (DIGI-KEY) P8048SCT-ND
CAP., 1.0UF, +80/-20%, NON POLARIZED, SMD SIZE 1206 CAP., 2.2UF,20%, NON POLARIZED, SMD SIZE 1206 CAP, 470UF, +80/-20%,16VDC, ALUMINUM ELECTROLYTIC,XXMM DIA,7MM CTRS. CAP, 100UF, +80/-20%,16VDC, ALUMINUM ELECTROLYTIC,10MM DIA,5MM CTRS. POT., 50 K OHM, 1/2W, 20%,THRU HOLE RES., 10 K OHM, 1/10W, 5%, SMD, SIZE 0805 RES., 1 K OHM, 1/10W, 5%, SMD, SIZE 0805 RES., 6.98K OHM, 1/10W, 1%, SMD, SIZE 0805 RES., 47 K OHM, 1/10W, 5%, SMD, SIZE 0805 RES., 220 OHM, 1/10W, 5%, SMD, SIZE 0805 SWITCH, MOMENTARY, SMD
2 2
C8
1
R1,R2 R3,R4, R9 R7,R10 R8 R5, R6 R11 S3
2 3 2 1 2 1 1
HEADER, 2MM, 2 POSITION HEADER, 3X2,2MM CTRS. SHUNTS, 2MM TRANSISTOR, FMMT3904CT,SMD,S0T-23 DIODE, LL4148CT-ND, SMD, PACKAGE DL-35
S1, S2 JP1 P1 Q1,Q2 D1
1 1 1 2 1
IC., TPA1517DWP, AUDIO U1 AMPLIFIER, 2 CHANNEL,20 PIN DIP PCB, TPA1517DWP SAMPLE EVM PCB1
1 1
(DIGI-KEY) 2163S-02-ND (NORCOMP)2164 (DIGI-KEY) -72-01-P2 2163S-03-ND (3M) (DIGI-KEY) 953170-30-ND (ZETEX) (DIGI-KEY) FMMT3904CT-ND FMMT3904CT-ND LL4148CT-ND (DIGIKEY)LL4148CTND (TI) TPA1517DWP (COMPUROUTE) TOOL #008450
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