Datasheet > TDA8939TH

TDA8939TH

更新时间： 2024-11-20 22:26:19

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

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TDA8939TH 数据手册

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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