1、恩智浦TDF8599B43W汽車音頻D類放大方案    恩智浦半導體（NXP）公司的TDF8599B是采用SOIBCDMOS技術的雙BTL汽車音頻D類放大器,包括有NDMOST-NDMOST輸出級,采用I2C總線控制,工作電壓從8V到24V,高效率和低靜態電流,具有雙4歐姆/2歐姆的BTL通路或單個1歐姆BTL通路,差分輸入.本文介紹了TDF8599B的主要特性,方框圖以及I2C總線和非I2C總線模式的雙BTL應用電路圖,I2C總線模式單BTL應用電路圖和I2C總線模式主從應用電路圖.TDF8599B:I2C-buscontrolleddualchann

2、el43W/4W,singlechannel恩智浦半導體（NXP） 公司的TDF8599B是采用SOIBCDMOS技術的雙BTL汽車音頻D類放大器,包括有NDMOST-NDMOST 輸出級,采用I2C總線控制,工作電壓從8V到24V,高效率和低靜態電流,具有雙4歐姆/2歐姆的BTL通路或單個1歐姆BTL通路,差分輸入.本文介紹了TDF8599B的主要特性,方框圖以及I2C總線和非I2C總線模式的雙BTL應用電路圖, I2C總線模式單BTL應用電路圖和I2C總線模式主從應用電路圖.TDF8599B:I2C-buscontrolled dual channel 43 W/4 W, single c

3、hannel 85 W/1 W class-D power amplifier with loaddiagnosticsThe TDF8599B is a dual Bridge-Tied Load (BTL) car audio amplifier comprising an NDMOST-NDMOST output stage based on SOI BCDMOS technology. Low power dissipation enables the TDF8599B high-efficiency, class-D amplifier to be used with a small

4、er heat sink than those normally used with standard class-AB amplifiers.The TDF8599B can operate in either non-I2C-bus mode or I2C-bus mode. When in I2C-bus mode, DC load detection results and fault conditions can be easily read back from the device. Up to 15 I2C-bus addresses can be selected depend

5、ing on the value of the external resistor connected topins ADS and MOD.When pin ADS is short circuited to ground, the TDF8599B operates in non-I2C-bus mode.Switching between Operating mode and Mute mode in non-I2C-bus mode is only possible using pins EN and SEL_MUTE.TDF8599B 主要特性:High-efficiencyLow

6、quiescent currentOperating voltage from 8 V to 24 VTwo 4ohm/2ohm capable BTL channels or one 1 ohm capable BTL channelDifferential inputsI2C-bus mode with 15 I2C-bus addresses or non-I2C-bus mode operationClip detectIndependent short circuit protection for each channelAdvanced short circuit protecti

7、on for load, GND and supplyLoad dump protectionThermal foldback and thermal protectionDC offset protectionSelectable AD or BD modulationParallel channel mode for high current drive capabilityAdvanced clocking:Switchable oscillator clock source: internal for Master mode or external for Slave modeSpre

8、ad spectrum modePhase staggeringFrequency hoppingNo pop noise caused by DC output offset voltageI2C-bus mode:DC load detectionAC load detectionThermal pre-warning diagnostic level settingIdentification of activated protections or warningsSelectable diagnostic information available using pins DIAG and CLIPQualified in accordance with AEC-Q100TDF8599B應用:Car audio圖1.TDF8599B方框圖圖2.TDF8599B非I2C總線模