Texas Instruments TPA3106D1 User Manual

User's Guide

SLOU191D–October 2007–Revised May 2011

TPA3106D1 Audio Power Amplifier EVM With LC Filter

Contents

1 Introduction .................................................................................................................. 1

2 Operation ..................................................................................................................... 3

3 TPA3106D1 EVM Schematic .............................................................................................. 4

4 TPA3106D1 EVM Bill of Material –LC Board ........................................................................... 6

List of Figures

1 The TI TPA3106D1 Audio Power Amplifier EVM – Top View......................................................... 2

2 The TI TPA3106D1 Audio Power Amplifier EVM – Bottom View..................................................... 2

3 TPA3106D1 EVM – Top Side Layout .................................................................................... 5

4 TPA3106D1 EVM – Bottom Side Layout ................................................................................ 5

List of Tables

1 Jumper and Resulting Gain Settings..................................................................................... 4

2 Bill OF Materials for TPA3106D1EVM ................................................................................... 6

1 Introduction

1.1 Description

The TPA3106D1 evaluation module consists of a single 40 W, class-D, mono audio power amplifier; complete with a small number of external components mounted on a circuit board that can be used to directly drive speakers with an external analog audio source as the input.

SLOU191D–October 2007– Revised May 2011 TPA3106D1 Audio Power Amplifier EVM With LC Filter

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Introduction

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Figure 1. The TI TPA3106D1 Audio Power Amplifier EVM – Top View

Figure 2. The TI TPA3106D1 Audio Power Amplifier EVM – Bottom View

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1.2 TPA3106D1 EVM Specifications

Operation

Supply voltage range 10 V to 26 V Supply current 4 A Max Continuous output power per channel, 8 Ω, VCC= 24 V, THD+N = 10% 40 W Minimum load impedance 4 Ω

2 Operation

2.1 Quick Start List for Stand-Alone Operation

Follow these steps to use the TPA3106D1EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the EVM module can be made by inserting stripped wire or using banana plugs for the power supply and output connections. The inputs accept standard RCA plugs.

2.1.1 Power Supply

1. Ensure that all external power sources are set to OFF.

2. Connect an external regulated power supply (adjusted from 10 V to 26 V) to the module VCC (J7) and GND (J8) banana jacks, taking care to observe the marked polarity.

2.1.2 Evaluation Module Preparations

2.1.2.1 Inputs and Outputs

1. Connect a speaker across OUT+ (J5) and OUT– (J6).

2. Install both gain jumpers GAIN0 (J12) and GAIN1 (J13). This sets the gain of the amplifier to the lowest level, 20 dB.

3. Install the Master/Slave jumper (J14), if Master mode operation is desired.

4. Install the fault jumper if resettable short circuit protection is desired.

2.1.2.2 Control Inputs

1. SHUTDOWN: This terminal is active LOW. A LOW on the device terminal (<0.8V) shuts down the amplifier; a HIGH (>2V) on the device terminal places the amplifier in the active state. Holding down switch SW1 will place the amplifier in the SHUTDOWN state. Releasing SW1 will return the amplifier to the active state.

2. MUTE: This terminal is active HIGH. A HIGH (>2V) on this terminal will immediately terminate audio playback through the speakers; a LOW (<0.8V) will enable the device. The outputs will remain switching with fifty percent duty cycle. SW2 on the EVM controls the state of the MUTE terminal. Holding down switch SW2 will place the amplifier in the MUTE state. Releasing SW2 will return 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 will set the respective terminal to GND. Removing the jumper will set the respective terminals to Vreg. Removing jumpers INCREASES the gain while installing jumpers DECREASES the gain. Logic levels are TTL compatible.

SLOU191D–October 2007– Revised May 2011 TPA3106D1 Audio Power Amplifier EVM With LC Filter

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TPA3106D1

GAIN1

INP

1.0mF

1.0 mF

AGND

INN

GAIN0

VCC

VBYP

AGND

ROSC

10n F

R6 10 0k

C13 10

Analog

AudioIn

J14

J 13

J12

R3 100 k

R5100 kW

R4 100 k

TP2

OUT-

OUT+

VREG

TP1

FAULT

J11

VREG

VCC

R1 100 k

R2 100k

C10

PGND

AGND

ConnectedatPowerPad

andthentoJ8 withsingle

pointconnection.

J10

L133 Hm

VREG

VCLAMP

PVCC

PGND

220 Fm

C11

C14

AGND

PGND

BSP

OUTP

PGND

BSN

OUTN

OUTP

MUTE

SDZ

PVCC

PGND

FAULT

AVCC

MUTE

SHUTDOWN

220

C12

C15

0.22 μF

C17 1nF

C16 1 nF

20Ω

20 Ω

1 μF

VCC

GND

MSTR/SLV

SYNC

L233 Hm

TPA3106D1 EVM Schematic

Table 1. Jumper and Resulting Gain Settings

GAIN0 (J12)

(1)

OFF = Jumper REMOVED; ON = Jumper INSTALLED.

(1)

ON ON 20

OFF ON 26

ON OFF 32

OFF OFF 36

2.1.3 Power Up

1. Verify correct voltage and input polarity and turn the external power supplies ON. The EVM should begin operation.

2. Adjust the input signal.

3. Adjust the control inputs to the desired settings.

4. Adjust the amplifier gain by installing or removing the J12 and J13 gain jumpers, according to Table 1.

3 TPA3106D1 EVM Schematic

GAIN1 (J13)

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(1)

Amplifier Gain (dB)

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3.1 TPA3106D1 EVM PCB Layers

TPA3106D1 EVM Schematic

Figure 3. TPA3106D1 EVM – Top Side Layout

Figure 4. TPA3106D1 EVM – Bottom Side Layout

SLOU191D–October 2007– Revised May 2011 TPA3106D1 Audio Power Amplifier EVM With LC Filter

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TPA3106D1 EVM Bill of Material –LC Board

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4 TPA3106D1 EVM Bill of Material –LC Board

All components should be ordered as lead free.

Table 2. Bill OF Materials for TPA3106D1EVM

RefDes Description Size Qty Mfg. Part No. Vendor No.

C1, C2, C4 Capacitor, ceramic, 1.0 μF, ±10%, X7R, 10 V 0603 3 Murata GRM188R71A105KA61D Digi-Key/490-3899-1-ND C3 Capacitor, ceramic, 0.01 μF, ±10%, X7R, 50 V 0603 1 TDK C1608X7R1H103KT Digi-Key/445-1311-2 C5, C10, Capacitor, ceramic, 1.0 μF, +80%/–20%, Y5V,

C11, C15 50 V C6, C7 Capacitor, ceramic, 0.22 μF, ±10%, X7R, 16 V 0603 2 TDK C1608X7R1C224KT Digi-Key/445-1318-2 C8, C9 Capacitor, ceramic, 1.0 μF, ±10%, X7R, 50 V 1206 2 Murata GRM31CR71H105KA61L Digi-Key/490-3908-1-ND

C12, C14 Radial 2 Panasonic EEU-FC1V221 Digi-Key/P10297

C13 1210 1 Murata GRM32DF51H106ZA01L Digi-Key/490-1891-2 C16, C17 Capacitor, ceramic, 1.0 nF, ±5%, COG, 50 V 0603 2 Panasonic ECJ-1VC1H102J Digi-Key/PCC2151TR-ND L1, L2 Radial 2 Toko A7503AY-330M R1–R6 Resistor, chip, 100 kΩ, 1/16 W, 5% 0603 6 Panasonic ERJ-3GEYJ104V Digi-Key/P100KG

R7, R8 Resistor, chip, 20 Ω, 1/4 W, 5% 1206 2 Panasonic ERJ-8GEYJ200V Digi-Key/P20ETR-ND J1 Phono Jack, PC mount, switched 1 Switchcraft PJRAN1X1U03 Newark/16C1860

J5–J8 6 Johnson 111-2223-001 Digi-Key/J587 J9, J11–J14 Header, 2 position, Male 2 mm 5 Norcomp 2163-36-01-P2 Digi-Key/2163S-36

J9, J11–J14 (shunts)

TP1, TP2, OUTP, OUTN, VCC, OUT+, OUT-

GND Test Points, 0.040" mounting hole 2 Farnell 240-345 Black S1, S2 Switch, Momentary, SMD, Low Profile 2 Panasonic EVQ-PPBA25 Digi-Key/P8086S

U1 TPA3106D1VFP 1 TI TPA3106D1VFP

Capacitor, electrolytic, 220 μF, Low impedance, 35 V

Capacitor, ceramic, 10 μF, +80%/–20%, Y5V, 50 V

Inductor, 33 μH, radial lead, ferrite material, shielded

Banana Jack w/knurled thumbnut (nickel plate)

SHUNT, 2MM 2 mm 5 Specialty 2JM-G

Test Points, 0.040" mounting hole 7 Farnell 240-345 White

Standoffs, 5/8" length, 4-40 thread 4 Keystone 1808 (Newark) 89F1934 Screws, 4-40, 0.375 4 (Digi-Key) H781-ND

0805 4 TDK C2012Y5V1H105Z Digi-Key/445-1364-2

32 pin HLQFP

TPA3106D1 Audio Power Amplifier EVM With LC Filter SLOU191D–October 2007– Revised May 2011

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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.

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EVM Warnings and Restrictions

It is important to operate this EVM within the input voltage range of 10 V to 26 V and the output voltage range of 0 V to 26 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 85°C. The EVM is designed to operate properly with certain components above 85°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.

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Texas Instruments TPA3106D1 User Manual

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