High Side Switch Controller

The max14922 is a high side n channel fet controller for implementing industrial high side switches for switching ground connected loads.

High side switch controller.

This transistor connects between v and the load. They belong to an expanding family designed to control protect and diagnose various types of loads with enhanced precision in bcm ecu or junction boxes. This requires both a robust low on resistance power switch and accurate analog circuitry for diagnostic protection and control functions. High side switches can safely drive high currents into complex resistive inductive and capacitive grounded loads in compliance with the harsh automotive environment.

The galvanic isolated octal high side smart power switch enhances diagnostics and system management by providing a 20 mhz spi port allowing both per channel over temperature signalization and efficient daisy chaining of multiple devices. The max1614 drives high side n channel power mosfets to provide battery power switching functions in portable equipment. A power good output indicates the status of the process side power supply. The n channel power mosfets typically have one third the on resistance of p channel mosfets of similar size and cost.

The max14922 device controls an external nmos power transistor allowing low r on high side switch applications from a 9v to 70v supply range. The device enlarges st s family of galvanic isolated high side switches. Because of how transistors work these can be a little more difficult to use in an arduino or raspberry pi circuit.