High Side Switch Controller

This requires both a robust low on resistance power switch and accurate analog circuitry for diagnostic protection and control functions.

High side switch controller.

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 opposite of the low side switch is the high side switch. The device enlarges st s family of galvanic isolated high side switches. Typically these use a pnp bjt or p channel mosfet.

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 n channel power mosfets typically have one third the on resistance of p channel mosfets of similar size and cost. This transistor connects between v and the load. A power good output indicates the status of the process side power supply.

Extreme switch devices are nxp smart high side switches for automotive 12 v bus truck 24 v and industrial applications. High side switches can safely drive high currents into complex resistive inductive and capacitive grounded loads in compliance with the harsh automotive environment. Because of how transistors work these can be a little more difficult to use in an arduino or raspberry pi circuit.