PurePath

Class-G Power Supply

Ref. Design

110 VAC

240 VAC

®

25 V–50 V

ANALOG

AUDIO

INPUT

12 V

PurePath

TAS5630B

(2.1 Configuration)

♫♪

♫♪

♫♪

3

OPA1632

´

±15 V

TAS5630B

www.ti.com

SLES217C – NOVEMBER 2010 – REVISED SEPTEMBER 2012

300-W STEREO / 400-W MONO PurePath™ HD ANALOG-INPUT POWER STAGE

Check for Samples: TAS5630B

1

FEATURES

APPLICATIONS

23

•

PurePath™ HD Enabled Integrated Feedback

•

Mini Combo System

Provides:

•

AV Receivers

–

Signal Bandwidth up to 80 kHz for High-

•

DVD Receivers

Frequency Content From HD Sources

•

Active Speakers

–

Ultralow 0.03% THD at 1 W into 4

Ω

–

Flat THD at all Frequencies for Natural

DESCRIPTION

Sound

The TAS5630B is a high-performance analog-input

class-D

amplifier

with

integrated

closed-loop

–

80-dB PSRR (BTL, No Input Signal)

feedback

technology

(known

as

PurePath

HD

–

>100-dB (A-weighted) SNR

–

Click- and Pop-Free Start-Up

stereo into 4-

Ω to 8-Ω speakers from a single 50-V

supply.

•

Multiple Configurations Possible on the Same

PCB With Stuffing Options:

PurePath HD technology enables traditional AB-

–

Mono Parallel Bridge-Tied Load (PBTL)

amplifier performance (<0.03% THD) levels while

providing the power efficiency of traditional class-D

–

Stereo Bridge-Tied Load (BTL)

amplifiers.

–

2.1 Single-Ended Stereo Pair and Bridge-

Unlike traditional class-D amplifiers, the distortion

Tied Load Subwoofer

curve does not increase until the output levels move

–

Quad Single-Ended Outputs

•

Total Output Power at 10% THD+N

PurePath HD technology enables lower idle losses,

–

400 W in Mono PBTL Configuration

making the device even more efficient. Coupled with

–

300 W per Channel in Stereo BTL

TI’s

class-G

power-supply

reference

design

for

Configuration

TAS563x, industry-leading levels of efficiency can be

achieved.

–

145 W per Channel in Quad Single-Ended

Configuration

•

High-Efficiency Power Stage (>88%) With 60-

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

(1)

Achievable output power levels are dependent on the thermal

configuration of the target application. A high-performance

thermal interface material between the exposed package heat

slug and the heat sink should be used to achieve high 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 © 2010–2012, 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.