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TDA8939 PDF预览

TDA8939

更新时间: 2024-11-17 22:53:07
品牌 Logo 应用领域
恩智浦 - NXP /
页数 文件大小 规格书
21页 97K
描述
Zero dead time Class-D 7.5 A power comparator

TDA8939 数据手册

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TDA8939  
Zero dead time Class-D 7.5 A power comparator  
Rev. 01 — 22 April 2004  
Objective data sheet  
1. General description  
Zero dead time Class-D 7.5 A power comparator  
The TDA8939 is a power comparator designed for use in a high efficiency class-D audio  
power amplifier system.  
It contains power switches, drive logic, protection circuitry, bias circuitry and a fully  
differential input stage (comparator).  
This device is optimized for applications in fully digital open-loop class-D audio systems  
(in combination with a digital PWM controller).  
The TDA8939 power comparator operates with high efficiency and low dissipation. The  
system operates over a wide supply voltage range from ±10 V up to ±30 V.  
2. Features  
Zero dead time switching  
Maximum output current 7.5 A  
Standby mode  
High efficiency  
Operating voltage from ±10 V to ±30 V (symmetrical) or 20 V to 60 V (asymmetrical)  
Low quiescent current  
High output power  
Diagnostic output  
Thermal protection, current protection and voltage protection.  
3. Applications  
Television sets  
Home-sound sets  
Multimedia systems  
All mains fed audio systems  
Car audio (boosters).  

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