TAS5602
www.ti.com ...................................................................................................................................................................................................... SLAS593–JUNE 2008
20W STEREO DIGITAL AMPLIFIER POWER STAGE
1
FEATURES
•
Integrated Self-Protection Circuits Including
Overvoltage, Undervoltage, Overtemperature,
and Short Circuit With Error Reporting
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
APPLICATIONS
•
Flat-Panel, Rear-Projection, and CRT TV
•
•
Thermally Enhanced Package
DCA (56-pin HTTSOP)
Wide Voltage Range: 10V–26V
•
Consumer Audio Applications
–
DESCRIPTION
–
No Separate Supply Required for Gate
Drive
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.
•
•
Efficient Class-D Operation Eliminates Need
for Heat Sinks
Closed Loop Power Stage Architecture
–
Improved PSRR Reduces Power Supply
Performance Requirements
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.
–
High Damping Factor Provides for Tighter,
More Accurate Sound With Improved Bass
Response
–
Constant Output Power Over Variation in
Supply Voltage
•
Differential Inputs
SIMPLIFIED APPLICATION CIRCUIT
3 - 4.2 V
TAS5602
Digital PWM Processor
10 - 26 V
DVDD
DGND
DVDD
DGND
PVCC
AVCC
OUTA_P
OUTA_N
PWM_AP
PWM_BP
BSA
2
I
S
OUTA
OUTB
LC
Filter
BSB
BSC
OUTB_P
OUTB_N
PWM_CP
PWM_DP
OUTC
OUTD
Control
Inputs
LC
Filter
BSD
HIZ
VCLAMP_AB
VCLAMP_CD
VALID
ERROR
GPIO
RESET
BYPASS
FAULT
THERM_WARN
AGND
PGND
SE/BTL
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
3
PowerPad is a trademark of Texas Instruments.
System Two, Audio Precision are trademarks of Audio Precision, Inc.
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