15W,30W,50W Filter-Free Class-D Stereo Amplifier Family with AM Avoidance

Check for Samples: TPA3116D2 , TPA3118D2, TPA3130D

 FEATURES

•    Supports Multiple Output Configurations

–   2×50-W into a 4-Ω BTL Load at 21 V (TPA3116D2)

–   2×30-W into a 8-Ω BTL Load at 24 V (TPA3118D2)

–   2×15-W into a 8-Ω BTL Load at 15 V (TPA3130D2)

•    Wide Voltage Range: 4.5 V – 26 V

•    Efficient Class-D Operation

–   >90% Power Efficiency Combined with Low Idle Loss Greatly Reduces Heat Sink Size

–   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 Packages

–   DAD (32-pin HTSSOP Pad-up)

–   DAP (32-pin HTSSOP Pad-down)

•    –40°C to 85°C Ambient Temperature Range

APPLICATIONS

•    Mini-Micro Component, Speaker Bar, Docks

•    After-Market Automotive

•    CRT TV

•    Consumer Audio Applications

DESCRIPTION

The  TPA31xxD2  series  are  stereo  efficient,  digital amplifier  power  stage  for  driving  speakers  up  to 100W/2Ω   in   mono.   The   high   efficiency   of   the TPA3130D2 allows  it to do 2x15W without external heat sink on a single layer PCB. The TPA3118D2 can even run 2x30W/8Ω without heat sink on a dual layer PCB. If even higher power is needed the TPA3116D2 does 2x50W/4Ω with a small heat-sink attached to its top side PowerPad. All three devices share the same footprint  enabling  a  single  PCB  to  be  used  across different power levels.

The   TPA31xxD2   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 TPA31xxD2 devices 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

Simplified Application Circuit