High-side
switches, with their integrated additional features, are
power switches that can switch high currents into grounded
loads safely and in compliance with the harsh automotive
environment.
STMicroelectronics offers a wide range of fully protected smart high-side switches
based on VIPower (vertical intelligent power) technology. This proprietary technology
allows integration on the same chip of complete digital and analog control and
protection circuits driving a vertical structure power MOSFET.
High-side switches only require a simple TTL logic input, and incorporate a diagnostic output status to the microcontroller. They can easily drive both inductive and resistive loads.
For full protection of the application, these devices have
built-in:
- over-temperature protection
- open-load detection for both on and off states
- shorted-load protection
- overvoltage and undervoltage shutdown
- protection against loss of ground and loss of Vcc
- low standby power dissipation
They are designed to work from -40 °C to +150 °C.
ST's high-side switch product portfolio includes single,
dual and quad drivers with digital or analog status and RDS(ON)
values ranging from 4 mΩ to 500 mΩ. Different packages are
available for this product family.
They are used in many power applications
in automotive body electronics like the junction box,
interior lighting, and motor control.
HSD with digital status
HSD with analog status
