TITAS5404-Q1高效小型100W汽車放大器參考設(shè)計(jì)

1、TI TAS5404Q1高效小型100W汽車放大器參考設(shè)計(jì)TI公司的TAS5404-Q1是用于汽車音響主機(jī)的四路D類音頻放器,四路模擬輸入,四路BTL輸出,每路能從14.4V電源中向4歐姆負(fù)載連續(xù)提供26W輸出或向2歐姆負(fù)載連續(xù)提供45W輸出,THD+N小于1%,75dB PSRR.每路增益為12 dB, 20 dB, 26 dB, 32dB.本文介紹了TAS5404-Q1主要特性和框圖,TAS5404-Q1主要特性和電路圖與材料清單,以及100W汽車放大器參考設(shè)計(jì)PMP9484主要特性,電路圖和材料清單.The TAS5404-Q1 device is a four-channel clas

2、s-D audio amplifier designed for use in automotive head units. The TAS5404-Q1 device provides four channels at 20 W continuously into 4 at less than 1% THD+N from a 14.4-Vdc supply when used with the application circuit. The input is configured as an analog single-ended interface. The patented PWM t

3、opology of the device provides dramatic improvements in efficiency and audio performance over traditional linear amplifier solutions. The improvement in efficiency and audio performance reduces the power dissipated by the amplifier by a factor of ten under typical music playback conditions. The devi

4、ce incorporates all the required functions required by the OEM application. The built-in load diagnostic functions for detecting and diagnosing disconnected speakers help reduce test time during the manufacturing process.TAS5404-Q1主要特性:TAS5404-Q1 Single-Ended InputFour-Channel Class-D Power Amplifie

5、rFour Analog Inputs, Four BTL Power OutputsTypical Output Power at 10% THD+N 26 W/ChInto 4 at 14.4 V45 W/ChInto 2 at 14.4 VChannels Can Be Paralleled (PBTL) for High- Current ApplicationsTHD+N < 0.02%, 1 kHz, 1 W Into 4 Patented Pop-and-Click-Reduction Technology Soft Muting With G

6、ain Ramp ControlCommon-Mode RampingPatented AM Interference AvoidancePatented Cycle-by-Cycle Current Limit75dB PSRRFour-Address I2C Serial Interface for Device Configuration and ControlChannel Gains: 12 dB, 20 dB, 26 dB, 32 dBLoad Diagnostic Functions: Output Open and Shorted LoadOutput-to

7、-Power and Output-to-Ground ShortsPatented Tweeter DetectionProtection and Monitoring Functions: Short-Circuit ProtectionLoad-Dump Protection to 50 VFortuitous Open-Ground and Open-Power TolerantPatented Output DC Level Detection While Music PlayingOvertemperature ProtectionOvervoltag

8、e and Undervoltage ConditionsClip Detection64-Pin QFP (PHD) Power Package With Heat Slug UpDesigned for Automotive EMC RequirementsQualified According to AEC-Q100ISO9000:2002 TS16949-Certified40 to 105 Ambient Temperature Range圖1.TAS5404-Q1框圖評(píng)估板TAS5404Q1EVMThis users guide describes the operati

9、on of the TAS5404Q1EVM. The TAS5404Q1EVM utilizes thePurePath Console 3 graphical user interface with the TAS5404Q1EVM plugin.The hardware consists of two pcbs that are soldered together through a dual row connector. The mainboard incorporates a TAS1020B for the USB interface through a micro USB con

10、nector. A 3.3-Vdc linearregulator provides 3.3 Vdc for the system. The TAS1020B converts the USB protocol to the appropriateI2C address and data. The audio signals are provided through the 3.5-mm female jacks. There are twojumpers, J3 and J4 to short the two 3.5-mm jacks so only one stereo pair is n

11、eeded to provide signal to allfour channels of the TAS5404-Q1. Connect the provided USB cable to J9 and the PC. The USB does not provide audio for this EVM.圖2.評(píng)估板TAS5404Q1EVM外形圖(散熱器去除以看得清楚)圖3評(píng)估板TAS5404Q1EVM主PCB布局圖(頂層)圖4評(píng)估板TAS5404Q1EVM放大器PCB布局圖(頂層)圖5評(píng)估板TAS5404Q1EVM放大器PCB布局圖(底層)圖6評(píng)估板TAS5404Q1EVM主PCB電路

12、圖圖7評(píng)估板TAS5404Q1EVM放大器PCB電路圖評(píng)估板TAS5404Q1EVM主PCB材料清單:評(píng)估板TAS5404Q1EVM放大器PCB材料清單:高效小型100W汽車放大器參考設(shè)計(jì)PMP9484PMP9484 is a 100W highly efficient and compact automotive amplifier reference design which can be used in 50W +50W stereo or 100W woofer applications. The design is broadly divided into three main st

13、ages:1.) Highly efficient single-phase synchronous boost converter using the LM5122 controller IC. The design accepts an input voltage of 7.5Vin to 20Vin (12Vin nominal) and provides an output of 24V capable of supplying 5A of continuous current to the load. The peak efficiency acheived is 98 percen

14、t.2.) 50W+ 50W stereo audio amplifier with TPA3116D2 Class D device3.) Very low cost stereo input to woofer bass input conversion100W汽車放大器參考設(shè)計(jì)PMP9484主要特性:Synchronous rectification in boost for very high efficiencyUltra-low footprint area for LM5122Actual power stage combo with highly efficient class D amplifierSingle speaker (woofer), dual speaker (stereo) support in the designLow Vin support for automotive application圖8.100W汽車放大器參考設(shè)計(jì)PMP9484外形圖(帶升壓轉(zhuǎn)換器)圖9.100W汽車放大器參考設(shè)計(jì)