TAS5182

SLES045E - JUNE 2002 - REVISED MAY 2004

100−W STEREO DIGITAL AMPLIFIER POWER STAGE CONTROLLER

FEATURES

PWM Processors

- Overcurrent

- Overtemperature

- Undervoltage Protection for External

MOSFETs

APPLICATIONS

DESCRIPTION

The TAS5182 device is a high-performance, stereo digital

amplifier power stage controller. It is designed to drive two

discrete bridge-tied-load (BTL) MOSFET output stages at

up to 100 W per channel at 6

Ω. The TAS5182 device,

incorporating Texas Instrument’s PurePath

t technology,

is used in conjunction with a digital audio PWM processor

(TAS50XX)

and

two

discrete

MOSFET

H-bridges

(4 MOSFETs per H-Bridge) to deliver high-power, true

digital audio amplification. The efficiency of this digital

amplifier can be greater than 95%, reducing the size of

both the power supplies and heat sinks needed. The

TAS5182 device accepts a stereo PWM 3.3-V input, and

it controls the switching of the discrete H-bridges.

Overcurrent,

overtemperature,

and

undervoltage

protections

are

built

into

the

TAS5182

device,

safeguarding the H-bridge and speakers against output

short-circuit conditions, overtemperature conditions, and

other fault conditions that could damage the system.

Left

Right

PWM Modulator

H-Bridges

Texas Instruments

Digital Audio

Solutions

TAS50XX

TAS5182

Discrete MOSFET

L

L

RR

LOAD

LOAD

Digital

Audio

• TI DAP

• TI DSP

• TI SPD IF

• TI 1394

H-Bridge Driver

Typical Stereo Audio System Using TAS5182 H-Bridge Driver

† When using appropriate MOSFETs.

‡ When using recommended design.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

www.ti.com

Copyright

 2003, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date. Products

conform to specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all parameters.

PurePath and PowerPAD are trademarks of Texas Instruments.