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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Copyright © 2007–2011, Texas Instruments Incorporated
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
2
TPA3106D1 Audio Power Amplifier EVM With LC Filter SLOU191D–October 2007– Revised May 2011
Copyright © 2007–2011, Texas Instruments Incorporated
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1.2 TPA3106D1 EVM Specifications
Operation
V
CC
I
CC
P
O
Z
I
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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Copyright © 2007–2011, Texas Instruments Incorporated
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