首页 » 解决方案 » NXP TDF8599B 43W汽车音频D类放大方案

NXP TDF8599B 43W汽车音频D类放大方案

作者:  时间:2009-08-12 09:11  来源:
NXP 公司的TDF8599B是采用SOI BCDMOS技术的双BTL汽车音频D类放大器,包括有NDMOST-NDMOST 输出级,采用I2C总线控制,工作电压从8V到24V,高效率和低静态电流,具有双4欧姆/2欧姆的BTL通路或单个1欧姆BTL通路,差分输入.本文介绍了TDF8599B的主要特性,方框图以及I2C总线和非I2C总线模式的双BTL应用电路图, I2C总线模式单BTL应用电路图和I2C总线模式主从应用电路图.

TDF8599B:I2C-bus controlled dual channel 43 W/4 W, single channel 85 W/1 W class-D power amplifier with load diagnostics

The 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 smaller 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 depending on the value of the external resistor connected to pins 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-efficiency

Low quiescent current

Operating voltage from 8 V to 24 V

Two 4ohm/2ohm capable BTL channels or one 1 ohm capable BTL channel

Differential inputs

I2C-bus mode with 15 I2C-bus addresses or non-I2C-bus mode operation

Clip detect

Independent short circuit protection for each channel

Advanced short circuit protection for load, GND and supply

Load dump protection

Thermal foldback and thermal protection

DC offset protection

Selectable AD or BD modulation

Parallel channel mode for high current drive capability

Advanced clocking:

Switchable oscillator clock source: internal for Master mode or external for Slave mode

Spread spectrum mode

Phase staggering

Frequency hopping

No ‘pop noise’ caused by DC output offset voltage

I2C-bus mode:

DC load detection

AC load detection

Thermal pre-warning diagnostic level setting

Identification of activated protections or warnings

Selectable diagnostic information available using pins DIAG and CLIP

Qualified in accordance with AEC-Q100

TDF8599B应用:

Car audio


图1.TDF8599B方框图


图2.TDF8599B非I2C总线模式的双BTL应用电路图
图3.TDF8599B I2C总线模式双BTL应用电路图

图4.TDF8599B I2C总线模式单BTL应用电路图

图5.TDF8599B I2C总线模式主从(双BTL主和单BTL从)应用电路图

相关推荐

elmos推出具备I2C总线接口的双天线电源芯片E522.40

I2C  elmos  E522.40  2014-04-14

I2C总线应用下的EEPROM测试

I2C  EEPROM  24LC02  2011-02-17

基于HYM8563的80C51系列单片机低功耗系统设计

I2C  单片机  2011-02-15

基于FPGA视频采集中的I2C总线设计与实现

视频  FPGA  I2C  2010-06-09

凌力尔特推出可热插拔的 I2C 隔离器 LTC4310

凌力尔特  I2C  隔离器  LTC4310  2010-04-23

Intersil推出两通道双向I2C缓冲器---ISL3300x系列

Intersil  缓冲器  ISL3300x  I2C  2010-04-23
在线研讨会
焦点