TPA3156D2 Texas instruments

TPA3156D2

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TPA3156D2

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Описание

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 .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. 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.

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
Multiple Switching Frequencies
- AM Avoidance
- Master and Slave Synchronization
- 300-KHz to 1.2-MHz Switching Frequency
Feedback Power-Stage Architecture With High PSRR Reduces PSU Requirements
Programmable Power Limit
Parallel BTL Mode and Mono-Channel Mode Support
Supports Both Single and Dual Power Supply Modes
Integrated Self-Protection Circuits Including Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit With Error Reporting
Thermally Enhanced Packages
- DAD (32-Pin HTSSOP Pad Up)
Pin to Pin Compatible with TPA3116D2 and TPA3126D2

Audio input type	Analog Input
Architecture	Class-D
Speaker channels (max)	Stereo
Rating	Catalog
Power stage supply (max) (V)	26
Power stage supply (min) (V)	4.5
Load (min) (Ω)	2
Output power (W)	70
SNR (dB)	102
THD + N at 1 kHz (%)	0.1
Iq (typ) (mA)	17
Control interface	Hardware
Closed/open loop	Closed
Analog supply (min) (V)	4.5
Analog supply (max) (V)	26
PSRR (dB)	70
Operating temperature range (°C)	-40 to 85