Quick Start List for Stand-Alone

2.3 Quick Start List for Stand-Alone

Follow these steps to use the TPA032D03 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)Ensure that all external power sources are set to OFF.

2)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.

3)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)Ensure that audio signal source level adjustments are set to minimum.

5)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.

6)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.

7)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 signals applied to the EVM Mute and SD inputs must have sufficient current capability to overcome the 100-kΩpullup 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-Ω± 8-Ωspeaker to the module OUT+ and OUT± pins, taking care to observe marked polarity.

-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.

2-4

Quick Start

Page 13 Page 15
Page 14
Image 14
Texas Instruments SLOU082 manual Quick Start List for Stand-Alone
Page 13 Page 15

SLOU082 specifications

Texas Instruments SLOU082 is a technical document primarily focused on the TPS7A47 device, which is an enhanced, low-noise linear voltage regulator designed for world-class performance in sensitive analog applications. This document explains the features, technologies, and characteristics that set the TPS7A47 apart in the industry.

One of the main features of the TPS7A47 is its ultra-low output noise, boasting a remarkable specification of just 1.2 μVRMS across a bandwidth of 10 Hz to 100 kHz. This characteristic makes it an ideal choice for high-precision, low-noise applications such as RF and audio signal processing, where minimizing noise is crucial for system performance. Additionally, the device offers a wide output voltage range from 1.4 V to 20 V, providing flexibility in various applications.

The TPS7A47 operates with a maximum output current of 1 A, enabling it to support multiple loads efficiently. Its dropout voltage is impressively low, particularly at light load conditions, ensuring high-efficiency performance in battery-powered applications. This aspect significantly extends battery life, making it suitable for portable devices.

Another highlight is the PowerPAD package offered for the TPS7A47, which enhances thermal performance and simplifies PCB design. The integration of thermal protection ensures the regulator operates safely under various conditions, preventing potential damage due to overheating.

The TPS7A47 also includes features such as reverse current protection, which prevents current from flowing back into the input when the output voltage exceeds the input voltage. This feature enhances reliability and extends the longevity of the device in various circuit configurations.

In terms of control, the TPS7A47 utilizes a low-dropout architecture, ensuring steady voltage regulation with minimal input-to-output voltage differential. It also supports a wide range of capacitor types, which allows for flexibility in component selection in layout design.

Overall, the Texas Instruments SLOU082 document on the TPS7A47 provides detailed insights into one of the most effective voltage regulation solutions available today. With exceptional noise performance, a versatile voltage range, robust thermal management, and reliability characteristics, the TPS7A47 is an exemplary choice for engineers and designers aiming to achieve high-performance analog systems.
Top Page Image Contents