Infineon MA12070PMERUSTM音频和HAT解决方案

Infineon公司的MA12070P是基于有所权的多级(3级和5级)开关技术的超效率音频功率放大器,支持4-26V电源电压,可以用在许多不同的领域.多级开关技术工作时具有非常低的功耗,并使放大器在各种音频产品中满功率时使用无滤波器的配置.MA12070P具有嵌入数字功率管理方案,功率管理算法动态调整开关频率,在输出功率范围内调整到最佳的功率损耗和EMI.集成的数字模拟转换器使得数字I2S音频流输入,支持的速率从44.1 kHz 到192 kHz.器件提供高度灵活的输出级配置,从单端输出到单个并行BTL输出.MA12070P具有短路保护,超温保护和欠压保护.器件具有高功率效率(PMP4),空闲功耗小于160W(26V PVDD,所有通路开关),2W功率时的效率大于80%(1kHz正弦, 8Ω),满功率的效率大于92%(1kHz正弦, 8Ω),音频性能(PMP2)的DNR大于101dB(A律, 参考1% THD+N功率电平),输出集成噪音140μV(A律),高输出电平时的THD+N为0.007%,器件采用4阶反馈误`控制,具有高电源干扰抑制性,高保真(HD)音频质量,电源电压为+4V 到 +26V (PVDD)和 +5V(A/DVDD),连续输出功率2x30W(RL = 8Ω at 22V,PMP4, 10% THD+N,没有散热器),2×80W峰值输出功率(26V PVDD, RL = 4Ω,10% THD+N),器件具有音量控制和限制器, 2.0, 2.1, 4.0, 1.0 输出级配置.采用64引脚QFN封装.主要用在电池供电扬声器,无线和坞站扬声器,条型音箱,多房间系统和家庭影院系统.本文介绍了MA12070P主要特性,应用框图以及MERUSTM音频和HAT板主要特性和指标,应用框图和电路图.

The MA12070P is a super-efficient audio poweramplifier based on proprietary multi-level switchingtechnology. It supports a 4-26V supply voltage range,allowing it to be used in many different applications.

Multi-level switching enables very low power lossduring operation. In addition, it allows the amplifier tobe used in filterless configurations at full rated powerin a wide range of audio products.

The MA12070P features an embedded digital powermanagement scheme. The power managementalgorithm dynamically adjusts switching frequency andmodulation to optimize power loss and EMI across theoutput power range.

An integrated digital-to-analog converter enablesdigital I2S audio stream input. It supports sample ratesfrom 44.1 kHz to 192 kHz.

Highly flexible outp...