Designers of industrial controllers can safely drive and demagnetise any inductive load for Industry 4.0 applications with the MAX14913 octal high-side switch and driver from Maxim Integrated Products. With a unique, innovative, safe-demagnetising clamp on each output, it easily and reliably interfaces low-voltage digital signals to 24 V output control lines.
For most industrial applications, engineers need a high-side switch to control inductive loads. The challenge is how to discharge the energy in the inductor when the switch opens and current flow stops. If the inductance and the resulting stored energy are high, a driver IC could be permanently damaged due to the generated heat.
Using its safe-demagnetisation feature, the MAX14913 can discharge and demagnetise any inductive load safely via its integrated clamps. For a more robust solution, it provides open-wire and short-circuit diagnostics, the most common external failure mode. Its low propagation delay enables higher system speed and throughput.
Compared to its predecessor, the MAX14913 achieves 15x space savings by eliminating 16 diodes from its previous solution. In addition, it has eight 640 mA high-side switches that can also be configured as push-pull drivers for high-speed switching. Applications include programmable logic controllers (PLCs), motion control units, drives, and other industrial and process automation applications.
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