Texas Instruments TAS5614LA / TAS5624A Class-D Power Amplifiers
Texas Instruments TAS5614LA / TAS5624A 150W Stereo / 300W Mono Class-D Power Amplifiers are a feature-optimized devices based on the TAS5614A. TI TAS5614LA uses large MOSFETs for improved power efficiency and a novel gate drive scheme for reduced losses in idle and at low output signals leading to reduced heat sink size. The unique pre-clipping output signal can be used to control a Class-G power supply.
The TAS5624A is a thermally-enhanced version of the class-D power amplifier based on the TAS5614A using large MOSFETs for improved power efficiency and a novel gate drive scheme for reduced losses in idle and at low output signals leading to reduced heat sink size. These TI power amplifiers are ideal for use in Blu-ray™ / DVD receivers, high power sound bars, and more.
Features
- PurePath™ HD Integrated Feedback Provides:
- 0.03% THD at 1W into 4Ω (TAS5614LA)
- 0.025% THD at 1W into 4Ω (TAS5624A)
- >65dB PSRR (No Input Signal)
- >105dB (A weighted) SNR
- Pre-Clipping Output for Control of a Class-G Power Supply
- Reduced Heat Sink Size due to use of 60mΩ Output MOSFET (TAS5614LA)
- Reduced Heat Sink Size due to use of 40mΩ Output MOSFET (TAS5624A)
- >90% Efficiency at Full Output Power
- Output Power at 10%THD+N
- 150W / 4Ω BTL Stereo Configuration
- 300W / 2Ω in PBTL Mono Configuration
- Output Power at 1%THD+N
- 125W / 4Ω BTL Stereo Configuration
- 65W / 8Ω BTL Stereo Configuration (TAS5614LA)
- 250W / 2Ω PBTL Mono Configuration(TAS5624A)
- Click and Pop Free Startup
- Error Reporting Self-protected Design with UVP, Over Temperature, and Short Circuit Protection
- EMI Compliant when used with Recommended System Design
Applications
- Blu-ray™ / DVD Receivers
- High Power Sound Bars
- Powered Subwoofer and Active Speakers
- Mini Combo Systems
Evaluation Modules
TI TAS5614LADDEVM and TAS5624ADDVEVM PurePath™ evaluation modules (EVMs) demonstrate the most recent version of the TAS5614LA and TAS5624A integrated circuit power stage devices. These EVMs can be configured as 2 BTL channels for stereo evaluation or 1 PBTL (parallel BTL) channel for subwoofer evaluation. An EVM together with a TI Input-USB Board 3 provides a complete stereo digital audio amplifier system that includes digital input (S/PDIF), analog inputs, interface to PC and DAP features like digital volume control, input and output mixers, automute, tone controls, loudness, EQ filters and dynamic range compression (DRC). There are configuration options for power stage failure protection.