High Side Switch Controller

Typically these use a pnp bjt or p channel mosfet.

High side switch controller.

The device enlarges st s family of galvanic isolated high side switches. 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 opposite of the low side switch is the high side switch.

The max14922 device controls an external nmos power transistor allowing low r on high side switch applications from a 9v to 70v supply range. Because of how transistors work these can be a little more difficult to use in an arduino or raspberry pi circuit. 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 transistor connects between v and the load.

This requires both a robust low on resistance power switch and accurate analog circuitry for diagnostic protection and control functions. The n channel power mosfets typically have one third the on resistance of p channel mosfets of similar size and cost. Extreme switch devices are nxp smart high side switches for automotive 12 v bus truck 24 v and industrial applications.