TAS5602 Datasheet, PDF (1/27 Pages) Texas Instruments – 20W STEREO DIGITAL AMPLIFIER POWER STAGE

TAS5602
www.ti.com ..................................................................................................................................................... SLAS593A – JUNE 2008 – REVISED OCTOBER 2008
20W STEREO DIGITAL AMPLIFIER POWER STAGE
FEATURES
1
•23 Supports Multiple Output Configurations
– 2×20-W into a 8-Ω BTL Load at 18 V
– 4×10-W into a 4-Ω SE Load at 18 V
– 2×10W (SE) + 1×20W (BTL) at 18 V
• Thermally Enhanced Package
– DCA (56-pin HTTSOP)
• Wide Voltage Range: 10V–26V
– No Separate Supply Required for Gate
Drive
• Efficient Class-D Operation Eliminates Need
for Heat Sinks
• Closed Loop Power Stage Architecture
– Improved PSRR Reduces Power Supply
Performance Requirements
– High Damping Factor Provides for Tighter,
More Accurate Sound With Improved Bass
Response
– Constant Output Power Over Variation in
Supply Voltage
• Single Ended Inputs
• Integrated Self-Protection Circuits Including
Overvoltage, Undervoltage, Overtemperature,
and Short Circuit With Error Reporting
APPLICATIONS
• Flat-Panel, Rear-Projection, and CRT TV
• Consumer Audio Applications
DESCRIPTION
The TAS5602 is a 20-W (per channel) efficient,
stereo digital amplifier power stage for driving 4
single-ended speakers, 2 bridge-tied speakers, or
combination of single and bridge-tied loads. The
TAS5602 can drive a speaker with an impedance as
low as 4Ω. The high efficiency of the TAS5602
eliminates the need for an external heat sink.
A simple interface to a digital audio PWM processor
is shown below. The TAS5602 is fully protected
against faults with short-circuit protection and thermal
protection as well as overvoltage and undervoltage
protection. Faults are reported back to the processor
to prevent devices from being damaged during
overload conditions.
SIMPLIFIED APPLICATION CIRCUIT
Digital PWM Processor
3 - 4.2 V
DVDD
DGND
OUTA_P
I2S
OUTA_N
TAS5602
DVDD
DGND
PWM_AP
PWM_BP
10 - 26 V
PVCC
AVCC
BSA
OUTA
OUTB
LC
Filter
BSB
Control
Inputs
OUTB_P
OUTB_N
VALID
ERROR
GPIO
PWM_CP
PWM_DP
BSC
OUTC
OUTD
HIZ
RESET
BSD
VCLAMP_AB
VCLAMP_CD
FAULT
THERM_WARN
SE/BTL
BYPASS
AGND
PGND
LC
Filter
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.
PowerPad is a trademark of Texas Instruments.
2
System Two, Audio Precision are trademarks of Audio Precision, Inc.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated