ADI ADM1275 2V-20V热插拔控制方案

ADI公司的ADM1275是2V-20V的热插拔控制器,能使电路板插入或拔出带电背板,控制电源电压为2V-20V,限流电阻可编程从5mV到25mV,12位ADC的精度为±1%,电荷泵栅极驱动器用来驱动多个外接N-沟FET,高栅极驱动电压保证了最低的RDSON,主要用在电源监视,电讯和数据通信设备,PC/服务器等.本文介绍了ADM1275主要特性,方框图,以及评估板EVAL-ADM127xEBZ主要特性,电路图,材料清单和PCB布局图.

The ADM1275 is a hot-swap controller that allows a circuit board to be removed from or inserted into a live backplane. It also features current and voltage readback via an integrated 12-bit analog-to-digital converter (ADC), accessed using a PMBus™ interface.

The load current is measured using an internal current sense amplifier that measures the voltage across a sense resistor in the power path via the SENSE+ and SENSE− pins. A default limit of 20 mV is set, but this limit can be adjusted, if required, using a resistor divider network from the internal reference voltage to the ISET pin.
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