Texas Instruments TAS5634DDV | Demoboard TAS5634EVM

Description

The TAS5634 is a PWM-input, Class-D amplifier power stage that supports 2 x 300 W (6 Ω) or 1 x 600 W (3 Ω) output power with a nominal power supply voltage of 58V. The 58V supply voltage provides support for higher impedance speaker loads including 6 Ω in BTL and 3 Ω in PBTL. Integrated MOSFETs and a new gate drive scheme provide high peak efficiency and low idle losses to reduce thermal solution size.The TAS5634 uses a closed-loop feedback design with constant voltage gain. The internally matched gain resistors ensure a high power supply rejection ratio (PSRR) and low output noise due to switch mode power supplies (SMPS).The TAS5634 is a fully integrated power stage compatible with TI’s portfolio of digital-input (I2S) audio processors and modulators, like the TAS5548 and TAS5558, making it a complete digital-input Class-D amplifier. The TAS5634 is available in the surface mount 44-pin HTSSOP package and is part of a pin-compatible family of PWM-input Class-D power stages including the TAS5612LA, TAS5614LA and TAS5624A.

Features

• PWM-Input, Class-D Amplifier Power Stage compatible with TI Digital-Input (I2S) Audio Processors and Modulators
• HD Integrated Closed-Loop Feedback provides:
• 0.025% THD at 1 W into 6 Ω

• 70 dB PSRR (No Input Signal)

• 105 dB SNR (A-weighted)

• Output Power at 10%THD+N
• 600 W / 3 Ω PBTL Mono Configuration
• 300W / 6 Ω BTL Stereo Configuration
• 230 W / 8 Ω BTL StereoConfiguration
• Output Power at 1%THD+N
• 465 W / 3 Ω PBTL Mono Configuration
• 240 W / 6 Ω BTL Stereo Configuration
• 180 W / 8 Ω BTL Stereo Configuration
• Integrated 80 mΩ MOSFETs for Reduced Heatsink Size

• 91%Efficiency at Full Output Power

• 75% Efficiency at 1/8 OutputPower

• Click and Pop Free Startup
• Device Protection: Undervoltage, Over Temperature, Overcurrent, Short Circuit Protection and DC Speaker Protection
• Pre-Clipping Output Signal for Control of a Class-G Power Supply
• 44-Pin HTSSOP (DDV) Package with Thermal Pad on the Top

More information

• Datasheet
• IC product information