TPA3221EVM: 208W x1 @ 2Ω, 112W x2 @ 3Ω, 12 ~ 30V in

Summary

The TPA3221EVM HD-Audio evaluation module demonstrates the TPA3221 integrated circuit from Texas Instruments. TPA3221 is an ultra-low idle-loss Class-D amp which keeps your system cooler and your battery playing longer while supporting 100kHz high resolution audio and features single-rail power supply support, gain settings, mute, and integrated protection. The device features advanced integrated feedback design which allows very low distortion across the audio band and enables a high audio quality.

The device is operated in either HEAD-mode (High-Efficiency-AD) or AD-mode Pulse Width Modulation (PWM) and can drive up to 2 x 100 W into 4-? load or 2 x 130 W into 3-? load. The TPA3221EVM features adjustable gain settings from 18-34dB and allows for flexible input signals with a 1-2 VRMS single-ended / differential analog input interface. This EVM supports 2 x BTL (stereo) output channels or 1 x PBTL (mono) output channel configurations. TPA3221EVM is a complete reference design for TPA3221, ready for evaluation and excellent listening.

Features

  • Integrated protection system (short circuit, clip and thermal)

  • Device integrated support for Single-Ended (SE) and Differential analog input signals

  • BTL and PBTL output configurations supported

  • Double-sided, plated-through, 2oz. Cu 2-layer PCB layout

  • Convenient XLR input connections for differential input

Specifications

Manufacturer Texas Instruments
Category Audio Amplifiers
Eval Board Part Number 296-48063-ND
Eval Board Supplier Texas Instruments
Eval Board Normally In Stock
Amplifier Type Class D
Number of Outputs Stereo (or Mono Bridged)
Output Power (RMS) @ Load 105 W x 2 @ 4 Ω
208 W @ 2 Ω
Voltage In 12 ~ 30 V
THD+N (1kHz) @ Conditions < 1% @ 100 W (3 Ω, 5V)
< 1% @ 170 W (2 Ω, 5V, Mono)
< 1% @ 88 W (4 Ω, 5V)
< 10% @ 105 W (4 Ω, 5V)
< 10% @ 112 W (3 Ω, 5V)
< 10% @ 208 W (2 Ω, 5V, Mono)
Features Current Limit (Adj. or Fixed)
Differential Inputs
LDO Regulator(s), On-Chip
Mute
Over Voltage Protection
Short Circuit Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Efficiency @ Conditions >80%, 30V in, 8 Ω @ 4 ~ 100 W
>80%, 12V in, 8 Ω @ 10 ~ 25 W
>75%, 12V in, 3 Ω @ 1 ~ 50 W
>70%, 30V in, 3 Ω @ 10 ~ 200 W
Component Count + Extras 133 + 87
Design Author Texas Instruments
Application / Target Market Hi Fi Audio
Home Theater
Powered Speakers
White Goods
Standby Current [Typical] 150 µA
Quiescent Current [Typical] 25 mA
Quiescent Current [Maximum] - Not Given
Standby Current [Maximum] - Not Given
Main I.C. Base Part TPA3221

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