PurePathDigital

PurePath

Class-G Power Supply

Ref. Design

110 VAC

240 VAC

®

25 V–50 V

ANALOG

AUDIO

INPUT

12 V

PurePath

TAS5615

(2.1 Configuration)

♪

♪

♪

3

OPA1632

´

±15 V

TAS5615

www.ti.com

SLAS595B – JUNE 2009 – REVISED FEBRUARY 2010

160 W STEREO/300W MONO PurePath™ HD Analog-Input Power Stage

Check for Samples: TAS5615

1

FEATURES

DESCRIPTION

23

•

Active Enabled Integrated Feedback Provides:

(PurePath™ HD Technology)

The TAS5615 is a high-performance analog input

class-D

amplifier

with

integrated

closed-loop

–

Signal Bandwidth up to 80 kHz for

feedback technology (known as PurePath™ HD

High-Frequency Content From

technology). It has the ability to drive up to 160

High-Definition Sources

Ω speakers from a single 50-V

–

Ultralow 0.03% THD at 1 W into 8

Ω

supply.

–

0.03% THD Across All Frequencies for

PurePath

HD

technology

enables

traditional

Natural Sound at 1 W

AB-amplifier performance (<0.03% THD) levels while

–

80-dB PSRR (BTL, No Input Signal)

providing the power efficiency of traditional class-D

amplifiers.

–

>100-dB (A weighted) SNR

–

Click- and Pop-Free Start-Up

Ultralow 0.03% THD+N is flat across all frequencies,

ensuring that the amplifier does not add uneven

–

Minimal External Components Compared to

distortion characteristics, and helps maintain a natural

Discrete Solutions

sound.

•

Multiple Configurations Possible on the Same

The efficiency of this class-D amplifier is greater than

PCB:

90%.

Undervoltage

protection,

overtemperature,

–

Mono Parallel Bridge-Tied Load (PBTL)

clipping, short-circuit and overcurrent protection are

–

2.1 Single-Ended (SE) Stereo Pair and

all integrated, safeguarding the device and speakers

Bridge-Tied Load (BTL) Subwoofer

against fault conditions that could damage the

system.

–

Quad Single-Ended (SE) Outputs

•

Total Output Power at 10% THD+N

–

300 W in Mono PBTL Configuration

–

160 W per Channel in Stereo BTL

–

80 W per Channel in Quad Single-Ended

•

High Efficiency Power Stage (> 90%) With 120

m

Ω Output MOSFETs

•

Two Thermally Enhanced Package Options:

–

PHD (64-Pin QFP)

–

DKD (44-Pin PSOP3)

•

Self-Protection Design (Including

Undervoltage, Overtemperature, Clipping, and

Short-Circuit Protection) With Error Reporting

•

EMI Compliant When Used With

Recommended System Design

APPLICATIONS

•

Mini Combo System

(1)

Achievable output power levels are dependent on the thermal

configuration of the target application. A high performance

•

AV Receivers

thermal interface material between the package exposed

•

DVD Receivers

heatslug and the heat sink should be used to achieve high

•

Active Speakers

output power levels

1

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.

2

PurePath HD is a trademark of Texas Instruments.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009–2010, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.