TI TAS5630模拟输入300W立体声D类放大方案

TI 公司的TAS5630 是集成了反馈的模拟输入300W立体声(总功率600W)的D类放大器,能从单电源50V向4-8欧姆扬声器提供高达300W立体声,具有传统AB类放大器的性能(<0.03% THD)和D类放大器的电源效率.它的SNR大于100dB,PSRR为80dB,功率级的效率高达88%,主要用于Mini组合系统,AV接收器,DVD接收器和有源扬声器.本文介绍TAS5630主要特性, 功能方框图, 典型系统方框图,几种应用电路以及TAS5630PHD2EVM评估板主要特性,详细电路图和材料清单(BOM).
The TAS5630 is a high performance analog input Class D amplifier with integrated closed loop feedback technology (known as PurePath™ HD) with the ability to drive up to 300W Stereo into 4 to 8 Speakers from a single 50V supply.
PurePath™ HD technology enables traditional AB-Amplifier performance (<0.03% THD) levels while providing the power efficiency of traditional class D amplifiers.
Unlike traditional Class D amplifiers, the distortion curve only increases once the output levels move into clipping.
PurePath™ HD technology enables lower idle losses making the device even more efficient. Coupled with TI’s Class G power supply reference design for TAS563x, industry leading levels of efficiency can be achieved.
TAS5630主要特性:
PurePath™ HD Enabled Integrated Feedback Provides:
Signal Bandwidth up to 80kHz for High Frequency Content From HD Sources
Ultralow 0.03% THD at 1W into 4
Flat THD at all Frequencies for Natural Sound
80dB PSRR (BTL, No Input Signal)
>100dB (A weighted) SNR
Click and Pop Free Startup
Multiple Configurations Possible on the Same PCB With Stuffing Options:
Mono Parallel Bridge Tied Load (PBTL)
Stereo Bridge Tied Load (BTL)
2.1 Single Ended Stereo Pair and Bridge Tied Load Subwoofer
Quad Single Ended Outputs
Total Output Power at 10%THD+N
600W in Mono PBTL Configuration
300W per Channel in Stereo BTL Configuration
145W per Channel in Quad Single Ended Configuration
High Efficiency Power Stage (>88%) With 60-m Output MOSFETs
Two ...