Texas Instruments TPA3101D2 Manuel utilisateur

User's GuideSLOU180 – December 2005

TPA3101D2 Audio Power Amplifier Evaluation Module

With LC Filter

Contents1 Introduction .......................................................................................... 22 Operation ............................................................................................ 33 TPA3101D2 EVM Schematic ..................................................................... 54 TPA3101D2 EVM PCB Layers ................................................................... 65 TPA3101D2 EVM Parts List ....................................................................... 8

List of Figures

1 TI TPA3101D2 Audio Power Amplifier EVM – Top View ...................................... 22 TI TPA3101D2 Audio Power Amplifier EVM – Bottom View .................................. 23 TPA3101D2 EVM Schematic ..................................................................... 54 TPA3101D2 EVM – Top Layer ................................................................... 65 TPA3101D2 EVM – Bottom Layer................................................................ 7

List of Tables

1 Gain Settings ........................................................................................ 42 TPA3101D2 EVM Parts List ....................................................................... 8

SLOU180 – December 2005 TPA3101D2 Audio Power Amplifier Evaluation Module With LC Filter 1

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1 Introduction

1.1 Description

Introduction

The TPA3101D2 evaluation module consists of a single 10-W, class-D, stereo audio power amplifiercomplete with a small number of external components mounted on a circuit board that can be used todirectly drive a speaker with an external analog audio source as the input.

Figure 1. TI TPA3101D2 Audio Power Amplifier EVM – Top View

Figure 2. TI TPA3101D2 Audio Power Amplifier EVM – Bottom View

2TPA3101D2 Audio Power Amplifier Evaluation Module With LC Filter SLOU180 – December 2005

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1.2 TPA3101D2 EVM Specifications

2 Operation

2.1 Quick Start List for Stand-Alone Operation

Operation

Supply voltage range 10 V to 26 VI

Supply current 4 A maxP

Continuous output power per channel, 8 Ω, V

= 18 V, THD + N = 0.1% 10 WR

Minimum load impedance 3.2 Ω

Follow these steps to use the TPA3101D2 EVM stand-alone or when connecting it into existing circuits orequipment. Connections to the EVM module can be made using banana plugs for the power supply andoutput connections. The inputs accept standard RCA plugs.

2.1.1 Power Supply1. Ensure that all external power sources are set to OFF.2. Connect an external regulated power supply adjusted from 10 V – 26 V to the module V

(J7) andGND ( J8) banana jacks taking care to observe marked polarity.

2.1.2 Evaluation Module Preparations

2.1.2.1 Inputs and Outputs1. If connecting to a fully differential input or a grounded input (the shield of the RCA jack is GND),remove jumpers J9 and J10 from the EVM board. These are located next to the input jacks J1 and J2.If connecting to a floating source, like a portable CD player, install J9 and J10. After setting the J9 andJ10 jumpers appropriately, connect the audio source to J1 (RIGHT) and J2 (LEFT).2. Connect a speaker across ROUT+ ( J6) and ROUT- ( J5). Connect another speaker across LOUT+ ( J3)and LOUT- ( J4).3. Install both gain jumpers GAIN0 ( J12) and GAIN1 ( J13). This sets the gain of the amplifier to thelowest level, 20 dB.4. Remove the jumper at MSTR/ SLV ( J14). If only one TPA3101D2 is evaluated, it must be configured asthe master. If multiple EVMs are connected together using the SYNC output (TP2), the additionalEVMs must be configured in the slave mode by installing the J14 jumper.5. Remove the jumper J11. This places the device in a latched mode when a short-circuit event occurs.

2.1.2.2 Control Inputs1. SD: This terminal is active low. A low signal on the device terminal (< 0.8 V) shuts down the amplifier;a high signal (> 2 V) on the device terminal places the amplifier in the active state. Holding downswitch S1 places the amplifier in the SHUTDOWN state. Releasing S1 returns the amplifier to theactive state.2. MUTE: This terminal is active high. A high signal (> 2 V) on this terminal immediately terminates audioplayback through the speakers and the outputs stop switching; a low signal (< 0.8 V) enables thedevice. S2 on the EVM controls the state of the MUTE terminal. Holding down switch S2 places theamplifier in the MUTE state. Releasing S2 returns the amplifier to the active state.3. GAIN0/GAIN1: Together, these terminals determine the gain of the amplifier. Refer to Table 1 .Installing a jumper in J12 or J13 sets the respective terminal to GND. Removing the jumper sets therespective terminals to VREG (~4 V). Removing jumpers INCREASES the gain while installing jumpersDECREASES the gain. Logic levels are TTL compatible.4. MSTR/ SLV: This terminal is used with the SYNC ( TP2) output to synchronize the switchingfrequencies of multiple TPA3101D2 devices. For example, with 2 devices, one would be configured asthe MASTER by removing the J14 jumper. The other EVM would be configured as the SLAVE deviceby installing a jumper in the J14 location. Logic levels are TTL compatible.

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Operation

Table 1. Gain Settings

GAIN1 (J13)

(1)

GAIN0 (J12)

(1)

Amplifier Gain (dB)

ON ON 20ON OFF 26OFF ON 32OFF OFF 36

(1)

OFF = Jumper removed; ON = Jumper installed

2.1.2.3 Control Outputs1. FAULT: This pin is a TTL compatible output for reporting a short-circuit fault on the output. If theoutputs are shorted to GND, V

, or to each other, this terminal goes high and remains high until oneof the following operations is performed: power is cycled, SHUTDOWN is cycled, or MUTE is cycled. Ifjumper J11 is installed, the MUTE terminal is connected directly to the FAULT terminal and ashort-circuit fault is automatically cleared when it occurs.

2.1.3 Power Up1. Verify correct voltage and input polarity and turn the external power supplies on. The EVM shouldbegin operation.2. Adjust the input signal.3. Adjust the control inputs to the desired settings.4. If no sound is audible, check the position of the MSTR/ SLV ( J14) jumper. It should be removed ifevaluating a single EVM.5. Adjust the amplifier gain by installing/removing the gain jumpers, J12 and J13.

4TPA3101D2 Audio Power Amplifier Evaluation Module With LC Filter SLOU180 – December 2005

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3 TPA3101D2 EVM Schematic

TPA3101D2

GAIN1

LINP

1.0mF

RINN

1.0mF

RINP

AGND

LINN

GAIN0

SYNC

MSTR/SLV

AVCC

FAULT

MUTE

SHUTDOWN

BSRP

ROUTP

ROUTN

BSRN

VCC

VREG

VBYP

AGND

BSLP

LOUTP

ROUTP

BSLN

ROSC

1mF

10nF

R6100k

PVCCR

PGNDR

PVCCR

PGNDR

VCLAMPR

VCLAMPL

PVCCL

PGNDL

PVCCL

1mF

VCC

1mF

220mF

C2010mF

C11

C12

C13

C14

RIN

LIN

J14

J13

J12

R3100k

R5100k

R4100k

TP2

C10

GND

VCC

C18

C19

C22

C21

C16

C15

0.22mF0.22mF

C1C2

C6C7

0.1

LOUT+

LOUT-

0.22mF

L333mH

L433mH

0.1

ROUT-

ROUT+

VREG

TP1

FAULT

J11

VREG

VCC

R1100k

R2100k

C17

PGND AGND

Connected at PowerPad

and then to J8with single

point connection.

0.47mF

J10

C23

C24

L133mH

L233mH

TPA3101D2 EVM Schematic

Figure 3. TPA3101D2 EVM Schematic

SLOU180 – December 2005 TPA3101D2 Audio Power Amplifier Evaluation Module With LC Filter 5

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4 TPA3101D2 EVM PCB Layers

TPA3101D2 EVM PCB Layers

Figure 4. TPA3101D2 EVM – Top Layer

TPA3101D2 Audio Power Amplifier Evaluation Module With LC Filter6 SLOU180 – December 2005

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TPA3101D2 EVM PCB Layers

Figure 5. TPA3101D2 EVM – Bottom Layer

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5 TPA3101D2 EVM Parts List

TPA3101D2 EVM Parts List

Table 2. TPA3101D2 EVM Parts ListRef. Description Size Qty Mfg Part # Vendor #

C1 – C4 Capacitor, ceramic, 0.22- µF, ±10%, X7R, 16-V 0603 4 TDK C1608X7R1C224KT Digi-key/445-1318-2

C5 Capacitor, ceramic, 0.01- µF, ±10%, X7R, 50-V 0603 1 TDK C1608X7R1H103KT Digi-key/445-1311-2

C6 – C9 Capacitor, ceramic, 0.1- µF, ±10%, X7R, 50-V 0603 4 TDK C1608X7R1H104KT Digi-key/445-1314-2

C10 – C14 Capacitor, ceramic, 1.0- µF, ±10%, X5R, 10-V 0603 5 TDK C1608X5R1A105KT Digi-key/445-1321-2

C17 – C19 Capacitor, ceramic, 1.0- µF, +80%/–20%, Y5V, 50-V 0805 3 TDK C2012Y5V1H105Z Digi-key/445-1364-2

C15, C16 Capacitor, ceramic, 1.0- µF, +80%/–20%, Y5V, 16-V 0805 2 TDK C2012Y5V1C105Z Digi-key/445-1367-2

C20 Capacitor, ceramic, 10- µF, +80%/–20%, Y5V, 50-V 1210 1 Murata GRM32DF51H106ZA01L Digi-key/490-1891-2

C21, C22 Capacitor, electrolytic, 220- µF, Low impedance Radial 2 Panasonic EEU-FC1V221 Digi-key/P10297

L1–L4 Inductor, 33- µH, radial lead, ferrite material, shielded Radial 4 Toko A7503AY-330M

C23, C24 Capacitor, ceramic, 0.47- µF, ±10%, X5R, 35-V 0805 2 Taiyo-Yuden GMK212BJ474KG

R1 – R6 Resistor, chip, 100-k Ω, 1/16 W, 5% 0603 6 Panasonic ERJ-3GEYJ104V Digi-Key/P100KG

J1, J2 Phono jack, PC mount, switched 2 Switchcraft PJRAN1X1U03 Newark/16C1860

J3 – J8 Banana jack w/knurled thumbnut (nickel plate) 6 Johnson 111-2223-001 Digi-Key/J587

J9 – J14 Header, 2 position, male 2 mm 6 Norcomp 2163-36-01-P2 Digi-Key / 2163S-36

J9 – Shunt, 2 mm 2 mm 6 Specialty 2JM-GJ14(shunts)

TP1, TP2 Test points, 0.040" mounting hole 1 Farnell 240-345

S1, S2 Switch, momentary, SMD, low profile 2 Panasonic EVQ-PPBA25 Digi-Key/P8086S

Standoffs, 5/8" length, 4-40 thread 4 Keystone 1808 (Newark) 89F1934

Screws, 4-40, .375 4 (Digi-Key) H781-ND

U1 TPA3101D2RGZ 48-pin QFN 1 TI TPA3101D2RGZ

8TPA3101D2 Audio Power Amplifier Evaluation Module With LC Filter SLOU180 – December 2005

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TPA3101D2 EVM Parts List

FCC Warnings

This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequencyenergy and has not been tested for compliance 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 otherenvironments may cause interference with radio communications, in which case the user at his own expense will be required totake whatever measures may be required to correct this interference.

EVM TERMS AND CONDITIONS

Texas Instruments (TI) provides the enclosed Evaluation Module and related material (EVM) to you, the user, (you or user)SUBJECT TO the terms and conditions set forth below. By accepting and using the EVM, you are indicating that you have read,understand and agree to be bound by these terms and conditions. IF YOU DO NOT AGREE TO BE BOUND BY THESE TERMSAND CONDITIONS, YOU MUST RETURN THE EVM AND NOT USE IT.This EVM is provided to you by TI and is intended for your INTERNAL ENGINEERING DEVELOPMENT OR EVALUATIONPURPOSES ONLY. It is provided “AS IS” and “WITH ALL FAULTS.” It is not considered by TI to be fit for commercial use. Assuch, the EVM may be incomplete in terms of required design-, marketing-, and/or manufacturing-related protective considerations,including product safety measures typically found in the end product. As a prototype, the EVM does not fall within the scope of theEuropean Union directive on electromagnetic compatibility and therefore may not meet the technical requirements of the directive.Should this EVM not meet the specifications indicated in the EVM User’s Guide, it may be returned within 30 days from the date ofdelivery for a full refund of any amount paid by user for the EVM, which user agrees shall be user’s sole and exclusive remedy.THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY TI TO USER, AND IS IN LIEU OF ALL OTHERWARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESSFOR ANY PARTICULAR PURPOSE OR NON-INFRINGEMENT.TI shall have no obligation to defend any claim arising from the EVM, including but not limited to claims that the EVM infringes thirdparty intellectual property. Further, TI shall have no liability to user for any costs, losses or damages resulting from any suchclaims. User shall indemnify and hold TI harmless against any damages, liabilities or costs resulting from any claim, suit orproceeding arising from user’s handling or use of the EVM, including but not limited to, (i) claims that the EVM infringes a thirdparty’s intellectual property, and (ii) claims arising from the user’s use or handling of the EVM. TI shall have no responsibility todefend any such claim, suit or proceeding.User assumes all responsibility and liability for proper and safe handling and use of the EVM and the evaluation of the EVM. TIshall have no liability for any costs, losses or damages resulting from the use or handling of the EVM. User acknowledges that theEVM may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). Due to the open construction of the EVM it is theuser’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge.EXCEPT TO THE EXTENT OF THE USER’S INDEMNITY OBLIGATIONS SET FORTH ABOVE, NEITHER PARTY SHALL BELIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES WHETHER TI ISNOTIFIED OF THE POSSIBILITY OR NOT.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 ofpatents or services described herein.

User agrees to read the EVM User’s Guide and, specifically, the EVM warnings and Restrictions notice in the EVM User’s Guideprior to handling the EVM and the product. This notice contains important safety information about temperatures and voltages.It is user’s responsibility to ensure that persons handling the EVM and the product have electronics training and observe goodlaboratory practice standards.By providing user with this EVM, product and services, TI is NOT granting user any license in any patent or other intellectualproperty right.

EVM WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the supply voltage range of –0.3 V to 30 V and input voltage range of –0.3 V to 4.5 V.Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there arequestions 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 theEVM. Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the loadspecification, please contact a TI field representative.

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TPA3101D2 EVM Parts List

EVM WARNINGS AND RESTRICTIONS (continued)

During normal operation, some circuit components may have case temperatures greater than 85 °C. The EVM is designed tooperate properly with certain components above 85 °C as long as the input and output ranges are maintained. These componentsinclude but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types ofdevices can be identified using the EVM schematic located in the EVM User's Guide. When placing measurement probes nearthese 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 75265Copyright 2005, Texas Instruments Incorporated

TPA3101D2 Audio Power Amplifier Evaluation Module With LC Filter10 SLOU180 – December 2005

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