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基于TITPS6206x的3MHz高效2ADC电源转

发布时间:2020-06-30 17:38:57 阅读: 来源:灰浆泵厂家

TI 公司的TPS6206x 系列是3MHz 高效同步降压DC/DC电源转换器,输出电流高达2A。输入电压从3V到6V,效率高达97%。主要应用在POL,笔记本电脑,手持媒体播放器和DSP电源。本文介绍了TPS6206x 主要特性,方框图,典型应用电路以及评估板TPS62065-67EVM电路图和材料清单(BOM)。The TPS6206x is a family of highly efficient synchronous step down DC-DC converters. They provide up to 2.0A output th an input voltage range of 3.0V to 6V the device is a perfect fit for power conversion from a 5V or 3.3V system supply rail. The TPS6206x operates at 3MHz fixed frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range. The Power Save Mode is optimized for low output voltage ripple. For low noise applications, TPS62065 can be forced into fixed frequency PWM mode by pulling the MODE pin high. TPS62067 provides an open drain power good the shutdown mode, the current consumption is reduced to less than 1μA and an internal circuit discharges the output S6206x 主要特性:3 MHz Switching FrequencyVINRange from 3.0V to 6VUp to 97% EfficiencyPower Save Mode/3MHz Fixed PWM ModePower Good OutputOutput Voltage Accuracy in PWM Mode ±1.5%Output Capacitor Discharge FunctionTypical 18 μA Quiescent Current100% Duty Cycle for Lowest DropoutVoltage PositioningClock DitheringSupports Maximum 1mm Height SolutionsAvailable in a 2x2x0.75mm SONTPS6206x 应用:POLNotebooks, Pocket PCsPortable Media PlayersDSP Supply图1。TPS6206x方框图TPS6206x 典型应用电路图2。TPS62065 1.8V 可调输出电压电路图图3。TPS62067 1.8V 可调输出电压电路图评估板TPS62065-67EVM-347The TPS62065-67EVM-347 is a fully assembled and tested pair of PCBs for evaluating the TPS62065 and TPS62067 2-A step-down converters. The EVM comes configured with both a TPS62065 IC and a TPS62067 IC; there are two PCBs, one for each respective step-down converter IC.评估板TPS62065-67EVM-347主要特性:? Input voltage range: 3.0 V to 6.0 V? Adjustable output voltage: 0.8 V to VIN? Up to 2.0-A output current? 3-MHz switching frequency? Power Good output (TPS62067EVM only)? Clock dithering图4。TPS62065EVM电路图图5。TPS62067EVM电路图TPS62065/67EVM材料清单(BOM):

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