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Level shifting for power MOSFETs control

Posted: 22 Mar 2013 ?? ?Print Version ?Bookmark and Share

Keywords:MOSFETs? power-supply sequencer? level shifting?

Some power architectures require that the power-supply sequencer (or system manager) control downstream power MOSFETs to allow power to flow into branch circuits. If the incoming power-supply voltage is at least 5V higher than the power-supply output voltage, a power MOSFET can be placed on the output of the power supply with the addition of some level-shifting circuitry. In this case, a low-voltage system manager like the MAX34440/MAX34441 series can be used to enable and disable the power MOSFET.

This application note explains how system power sequencing and level shifting can be accomplished using a low-voltage system manager.

View the PDF document for more information.

Originally published by Maxim Integrated Products Inc. at as "Level Shifting to Control Power MOSFETs".

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