Operation, Power Supply | Texas Instruments TPA3100D2 specs

www.ti.com

Operation

1.2TPA3100D2 EVM Specifications

VCC	Supply voltage range	10 V to 26	V
ICC	Supply current	4 A max
PO	Continuous output power per channel, 8 Ω, VCC = 18 V, THD + N = 3.5%	20 W
RL	Minimum load impedance	3.2 Ω

2 Operation

2.1Quick Start List for Stand-Alone Operation

Follow these steps to use the TPA3100D2 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the EVM module can be made using banana plugs for the power supply and output connections. The inputs accept standard RCA plugs.

2.1.1Power Supply

1.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 VCC (J7) and GND (J8) banana jacks taking care to observe marked polarity.

2.1.2Evaluation Module Preparations

2.1.2.1Inputs and Outputs

1.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 and J10 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 the lowest level, 20 dB.

4.Remove the jumper at MSTR/SLV (J14). If only one TPA3100D2 is evaluated, it must be configured as the master. If multiple EVMs are connected together using the SYNC output (TP2), the additional EVMs 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.

2.1.2.2Control Inputs

1.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 down switch S1 places the amplifier in the SHUTDOWN state. Releasing S1 returns the amplifier to the active state.

2.MUTE: This terminal is active high. A high signal (> 2 V) on this terminal immediately terminates audio playback through the speakers and the outputs stop switching; a low signal (< 0.8 V) enables the device. S2 on the EVM controls the state of the MUTE terminal. Holding down switch S2 places the amplifier 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 the respective terminals to VREG (~4 V). Removing jumpers INCREASES the gain while installing jumpers DECREASES the gain. Logic levels are TTL compatible.

4.MSTR/SLV: This terminal is used with the SYNC (TP2) output to synchronize the switching frequencies of multiple TPA3100D2 devices. For example, with 2 devices, one would be configured as the MASTER by removing the J14 jumper. The other EVM would be configured as the SLAVE device by installing a jumper in the J14 location. Logic levels are TTL compatible.

SLOU179 –December 2005

TPA3100D2 Audio Power Amplifier Evaluation Module With LC Filter

TPA3100D2 specifications

The Texas Instruments TPA3100D2 is a highly efficient Class-D audio amplifier designed for a variety of applications including televisions, soundbars, and other multimedia devices. This device exemplifies cutting-edge technology in audio amplification, combining high-performance sound quality with an impressive power output and energy efficiency.

One of the standout features of the TPA3100D2 is its high output power capability. It can deliver up to 15 watts per channel into a 4-ohm load, making it suitable for driving mid-range speakers and subwoofers in consumer audio products. With an operating voltage range from 8 to 24 volts, the amplifier can support diverse system architectures, providing flexibility in design and application.

The TPA3100D2 incorporates several advanced technologies that enhance its performance. Notably, it utilizes the efficient Class-D architecture, which converts DC power into amplified audio signals with minimal heat generation. This ensures that more power is used for the audio signal rather than wasted as heat, leading to improved energy efficiency and reliability in long-running applications.

Additionally, the device features a built-in patient feedback loop that optimizes the sound quality across various input conditions. This technology significantly reduces distortion, allowing the TPA3100D2 to deliver clearer and more accurate sound reproduction. It also boasts a unique speaker protection system that helps to prevent damage during operation by monitoring the output signals and adjusting the amplifier's performance accordingly.

The TPA3100D2 supports advanced audio features such as digital volume control and automatic gain control, enabling designers to create versatile audio systems that meet diverse user needs. Its low total harmonic distortion (THD) rating assures sound fidelity, while high power supply rejection ratio (PSRR) minimizes the impact of power supply noise, ensuring a purer audio signal.

The compact package design of the TPA3100D2 makes it easy to integrate into tight spaces within consumer electronics, facilitating innovative product designs. Furthermore, it is supported by comprehensive design resources, including evaluation modules and software, which assist engineers in optimizing their designs for maximum performance.

In summary, the Texas Instruments TPA3100D2 is a powerful and efficient Class-D amplifier tailored for modern audio applications, offering exceptional sound quality, advanced protection features, and flexible design options. Its integration of innovative technologies not only enhances audio performance but also promotes energy efficiency, making it an ideal choice for a variety of audio amplification needs.