基于AOS AOZ7503GAI 的TV高效率ACDC电源方案

AOZ7503是电流模式控制的反激电源控制器。其集成了X电容放电功能,可以去掉X电容放电电阻,以提高待机功耗。具有Brown-In/Brown-Out功能,在Brown-Out下,进一步降低功耗。轻载时,有频率反走和skip模式,以实现轻载时更高的效率,和低待机功耗。数字扩频技术可以降低EMI。另外,AOZ7503还具有逐周期电流限制,欠压锁定,VDD OVP,DMAG pin OVP,过载保护,CS pin protection,二次侧二极管短路保护等功能。

场景应用图

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展示版照片

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方案方块图

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核心技术优势

●Wide input voltage range: 85V to 265V ●Supply Voltage (VDD): 7.5V to 25V ●General Continuous Operation Frequency:61-69KHz,typical 65KHz ●Spread Spectrum Clock Generator spread range : SSCG is ±6% and SSCG period is 16ms.

方案规格

●Integrated HV start-up circuitry ●Integrated bleeding resistor removal function (CB certificate reference no. DK-64852-UL) ●Integrated brown-in/brown-out function ●Under-voltage lockout: 7V/15V ●Cycle-by-cycle current limit ●Minimum on time modulation to minimize acoustic noise ●Frequency foldback mode and skip mode operation ●Frequency spread by spread spectrum clock generator ●VDD over-voltage protection ●DMAG pin over-voltage protection ●Secondary-side diode short protection ●CS pin protection ●Internal over-temperature protection

技术文档

类型标题档案
软件Power test report