TPA3131D2 Datasheet, PDF (1/31 Pages) Texas Instruments – 4W, 25W Filter-Free Class-D Stereo Amplifier with AM Avoidance

TPA3131D2
TPA3132D2
www.ti.com
SLOS841 – JULY 2013
4W, 25W Filter-Free Class-D Stereo Amplifier with AM Avoidance
Check for Samples: TPA3131D2, TPA3132D2
FEATURES
1
•2 Supports Multiple Output Configurations
– 2×4-W into a 8-Ω BTL Load at 7.4 V
(TPA3131D2)
– 2×25-W into a 8-Ω BTL Load at 19 V
(TPA3132D2)
• Wide Voltage Range: 4.5 V – 26 V
• Automotive Load-Dump Compliant
• Efficient Class-D Operation
– >90% Power Efficiency Combined with Low
Idle Loss for Heat Sink free Operation
– Advanced Modulation Schemes
• Multiple Switching Frequencies
– AM Avoidance
– Master/Slave Synchronization
– Up to 1.2 MHz Switching Frequency
• Feedback Power Stage Architecture with High
PSRR Reduces PSU Requirements
• Programmable Power Limit
• Differential/Single-Ended Inputs
• Stereo and Mono Mode with Single Filter Mono
Configuration
• Single Power Supply Reduces Component
Count
• Integrated Self-Protection Circuits Including
Over-Voltage, Under-Voltage, Over-
Temperature, DC-Detect, and Short Circuit
with Error Reporting
• Thermally Enhanced Package
– 32-Pin QFN Pad-Down
• –40°C to 85°C Ambient Temperature Range
APPLICATIONS
• Laptop Computers and Ultrabooks
• Flatpanel TV
• Consumer Audio Applications
DESCRIPTION
The TPA3131/32D2 are efficient, stereo digital
amplifier power stages for driving speakers with up to
2x42W/4Ω peak power. TPA3131/32D2 operates
heatsink-free with cooling to PCB through the bottom
side Power-Pad with sustained output power from
2x4W/8Ω (TPA3131D2) to 2x25W/8Ω (TPA3132D2).
The TPA3131/32D2 advanced oscillator/PLL circuit
employs a multiple switching frequency option to
avoid AM interferences; this is achieved together with
an option of Master/Slave option, making it possible
to synchronize multiple devices.
The TPA3131/32D2 are fully protected against faults
with short-circuit protection and thermal protection as
well as over-voltage, under-voltage and DC
protection. Faults are reported back to the processor
to prevent devices from being damaged during
overload conditions.
For feature compatible devices see: Power Pad up
device 2x50W TPA3116D2, Power Pad down 2x15W
TPA3130D2 and 2x30W TPA3118D2.
Simplified Application Circuit
Audio Source
Audio Processor
And control
Right
Left
AM/FM Avoidance
Control
GAIN control and Master/Slave setting
Power Limit
Capable of synchronizing to other devices
TPA3131D2
TPA3132D2
PBTL
Detect
Right
SDZ
MUTE
FAULTZ
Left
AM2,1,0
GAIN / SLV
PLIMIT
Sync
4.5V-26V
PSU
LC Filter
LC Filter
DEVICE
TPA3131D2
TPA3132D2
POWER
2 x 4W/8Ω
2 x 25W/8Ω
QFN 32-PIN
Pad down
Pad down
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
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 © 2013, Texas Instruments Incorporated