IR公司的IRS2052M集成了PWM调制器和保护电路的两路200V高压高性能D类音频放大器驱动器,和外接MOSFET和外接元件可以组成完整的两路D类音频放大器,可选择死区时间和可编程双向过流保护,并集成了时钟振荡器和无开关声的起动和关断.主要用在高性能的家庭影院系统和汽车音频放大器.本文介绍了IRS2052M主要特性和指标, 功能方框图和典型应用框图.The IRS2052M integrates two channels of high voltage, highperformance Class D audio amplifier drivers with PWM modulators andprotections. In conjunction with external MOSFET and externalcomponents, a complete 2 channel Class D audio amplifier can berealized. The IRS2052M is designed with floating analog inputs andprotection control interface pin especially for half bridgetopology. High and low side MOSFET are protected from over currentconditions by a programmable bi-directional current sensing.Essential elements of PWM modulator section allow flexible systemdesign. A small MLPQ48 package enhances the benefit of smaller sizeof Class D topology. The IRS2052M is a lead-free, ROHScompliant.IRS2052M主要特性:• 2 channel integrated analog input Class D audio amplifierdriver• Versatile protection control enabling latched, non-latched, orhost controlled shutdown function• Integrated clock oscillator• Clipping detection• External thermal sensor input• On-chip thermal shutdown with warning• Programmable over current protection• Programmable dead-time generation• Start and stop click noise reduction• Under voltage protection• High noise immunityIRS2052M主要指标:图1.IRS2052M功能方框图图2.IRS2052M典型应用框图图3.IRS2052M OTA输入噪音电压测量电路图
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