TPA3131D2 Datasheet, PDF (1/35 Pages) Texas Instruments – 4W, 25W Filter-Free Class-D Stereo Amplifier with AM Avoidance

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TPA3131D2, TPA3132D2
SLOS841B – SEPTEMBER 2013 – REVISED JANUARY 2015
TPA313xD2 4-W, 25-W Filter-Free Class-D Stereo Amplifier With AM Avoidance
1 Features
•1 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 to 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 and Slave Synchronization
– Up to 1.2-MHz Switching Frequency
• Feedback Power Stage Architecture With High
PSRR Reduces PSU Requirements
• Programmable Power Limit
• Differential and Single-Ended Inputs
• Stereo and Mono Mode With Single-Filter Mono
Configuration
• Single Power Supply Reduces Component Count
• Integrated Self-Protection Circuits Including
Overvoltage, Undervoltage, Overtemperature, DC-
Detect, and Short Circuit With Error Reporting
• Thermally Enhanced Package
– 32-Pin VQFN Pad-Down
• –40°C to 85°C Ambient Temperature Range
2 Applications
• Laptop Computers and Ultrabooks
• Flatpanel TV
• Consumer Audio Applications
3 Description
The TPA313xD2 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 PowerPAD™ with sustained output power from 2
× 4 W / 8 Ω (TPA3131D2) to 2 × 25 W / 8 Ω
(TPA3132D2).
The TPA313xD2 advanced oscillator/PLL circuit
employs a multiple switching frequency option to
avoid AM interferences; this is achieved together with
an option of Master and Slave synchronization,
making it possible to synchronize multiple devices.
The TPA313xD2 are fully protected against faults with
short-circuit protection and thermal protection as well
as overvoltage, undervoltage, and DC protection.
Faults are reported back to the processor to prevent
devices from being damaged during overload
conditions.
For feature compatible devices see: PowerPAD up
device 2 × 50-W TPA3116D2, PowerPAD down 2 ×
15-W TPA3130D2 and 2 × 30-W TPA3118D2.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
TPA3131D2
TPA3132D2
VQFN (32)
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Application Circuit
Audio Processor
And control
Right
TPA3131D2
TPA3132D2
4.5V-26V
PSU
Audio Source
Left
AM/FM Avoidance
Control
GAIN control and Master/Slave setting
Power Limit
Capable of synchronizing to other devices
PBTL
Detect
SDZ
MUTE
FAULTZ
AM2,1,0
Right
Left
GAIN / SLV
PLIMIT
Sync
LC Filter
LC Filter
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.