真关断电路

摘要：降压型高达的的DC / DC的转换器有一个从输入到输出的的直接的路径（通过的电感器和肖特基二极管的的） ，使得一个完整的关机变得困难的。此电路达到通过调停的一个和输入和输出，之间的由一个RS-232收发器（ MAX3384 ）控制的的的外部MOSFET的为MAX17112转换器的的完整的关机。

Maxim > Design support > App notes > Circuit Protection > APP 4835
Maxim > Design support > App notes > Interface Circuits > APP 4835
Maxim > Design support > App notes > Power-Supply Circuits > APP 4835

Keywords: battery-powered, stepup dc/dc converters, shutdown, RS-232 transceivers

Feb 07, 2011
APPLICATION NOTE4835
True-Shutdown Circuit
Abstract:Step-up DC/DC converters have a direct path from input to output (via the inductor and Schottky diode) that makes a full
shutdown difficult. This circuit achieves full shutdown for a MAX17112 converter by interposing an external MOSFET between input
and output, controlled by an RS-232 transceiver (MAX3384).

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