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TPA3156D2
SLOS992 –DECEMBER 2017
TPA3156D2 2 x 70-W, Analog Input, Stereo, Class-D Audio Amplifier With Low Idle Power
Dissipation
1 Features
3 Description
The TPA3156D2 has low idle power loss and helps to
extend the battery life of Bluetooth/Wireless speakers
and other battery-powered audio systems. The high
efficiency of the TPA3156D2 device allows it to do 2
× 70 W with external heat sink on a dual layer PCB.
This device integrates an efficiency boost mode,
which dynamically reduces the current ripple of the
external LC filter and the idle current .
1
•
•
•
2 × 70 W Into a 4-Ω BTL Load at 24 V
Wide Voltage Range: 4.5 V to 26 V
Efficient Class-D Operation
–
Very Low Idle Current: <23 mA for
recommended LC filter configurations
–
–
Greater than 90% Power Efficiency
Adaptive Modulation Schemes based on
Output Power
The TPA3156D2 advanced oscillator/PLL circuit
employs a multiple switching frequency option to
avoid AM interferences, which is achieved together
with an option of either master or slave option,
making it possible to synchronize multiple devices.
•
•
Multiple Switching Frequencies
–
–
–
AM Avoidance
Master and Slave Synchronization
300-KHz to 1.2-MHz Switching Frequency
The TPA3156D2 devices 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.
Feedback Power-Stage Architecture With High
PSRR Reduces PSU Requirements
•
•
Programmable Power Limit
Parallel BTL Mode and Mono-Channel Mode
Support
Device Information(1)
•
•
Supports Both Single and Dual Power Supply
Modes
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPA3156D2
DAD (32)
11.00 mm × 6.20 mm
Integrated Self-Protection Circuits Including
Overvoltage, Undervoltage, Overtemperature, DC-
Detect, and Short Circuit With Error Reporting
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
•
•
Thermally Enhanced Packages
Simplified Application Circuit
–
DAD (32-Pin HTSSOP Pad Up)
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Pin to Pin Compatible with TPA3116D2 and
TPA3126D2
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Soundbars
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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.
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