TAS5152

SLES127 − FEBRUARY 2005

STEREO DIGITAL AMPLIFIER POWER STAGE

TM

FEATURES

− DKD (36-Pin PSOP3)

140-m

W Output MOSFETs

Without Any Power-Supply Sequencing

− Undervoltage

− Overtemperature

− Overload

− Short Circuit

Recommended System Design

APPLICATIONS

DESCRIPTION

The TAS5152 is a third-generation, high-performance,

integrated stereo digital amplifier power stage with

improved protection system. The TAS5152 is capable

of driving a 4-

Ω bridge-tied load (BTL) at up to 125 W

per channel with low integrated noise at the output, low

THD+N performance, and low idle power dissipation.

A low-cost, high-fidelity audio system can be built using

a TI chipset, comprised of a modulator (e.g., TAS5508)

and the TAS5152. This system only requires a simple

passive LC demodulation filter to deliver high-quality,

high-efficiency audio amplification with proven EMI

compliance. This device requires two power supplies,

12 V for GVDD and VDD, and 35 V for PVDD. The

TAS5152 does not require power-up sequencing due to

internal power-on reset. The efficiency of this digital

amplifier is greater than 90% into 6

Ω, which enables the

use of smaller power supplies and heatsinks.

The TAS5152 has an innovative protection system

integrated on-chip, safeguarding the device against a

wide range of fault conditions that could damage the

system. These safeguards are short-circuit protection,

overcurrent protection, undervoltage protection, and

overtemperature protection. The TAS5152 has a new

proprietary current-limiting circuit that reduces the

possibility of device shutdown during high-level music

transients. A new programmable overcurrent detector

allows the

use of lower-cost inductors in the

demodulation output filter.

PVDD − Supply Voltage − V

0

10

20

30

40

50

60

70

80

90

100

110

120

130

0

5

10

15

20

25

30

35

BTL OUTPUT POWER vs SUPPLY VOLTAGE

8

Ω

4

Ω

TC = 75°C

THD+N @ 10%

6

Ω

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 Digital and PowerPAD are trademarks of Texas Instruments.

Other trademarks are the property of their respective owners.

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

 2005, Texas Instruments Incorporated