Two octal high-side switches integrate protection and diagnostics
The IPS8160HQ and IPS8160HQ-1 high side switches provide eight channels in a compact QFN48L package with built-in protection and diagnostics.
This combination helps save space and enhance reliability in PLC modules which are used for driving heavy loads and uni-directional motors in vending machines, said ST Microelectronics. The switches are also suitable for I/O peripherals in factory automation equipment, computer numerical control (CNC) machines and for controlling resistive, capacitive, and inductive loads with one side connected to ground. Both switches have low RDS(on) of 160 mOhm (typical at 25 degrees C), which helps minimise power dissipation.
Overload and junction over-temperature protection for each channel prevent damage to circuits while minimising any disruption caused by temporary faults. Overloaded channels turn off and restart automatically, keeping junction and case temperatures below safe maximum levels, while non-overloaded channels continue to operate normally. The switch turns off immediately in the event of ground disconnection. There is also over-voltage protection, under-voltage lock-out (UVLO), short-circuit protection, output-current limitation and an over-temperature fault indicator.
IPS8160HQ has a pre-set current limit of 0.7A and the IPS8160HQ-1 current limit’s current limit is 1A. Both have an operating voltage range of 10.5V to 36V. To meet international standards for industrial equipment, the switches are certified to IEC 61131-2 for process controllers and IEC 61000 specifications for electromagnetic compatibility (EMC), electrostatic discharge (ESD) immunity, electrical fast-transient (EFT/burst) immunity and surge immunity.
The X-NUCLEO-OUT9A1 and X-NUCLEO-OUT19A1 digital output expansion cards for STM32 Nucleo boards can be used to evaluate the IPS8160HQ and IPS8160HQ-1 driving and diagnostic capabilities. The cards can be connected to 1A industrial loads.
The IPS8160HQ and IPS8160HQ-1 are in production now, housed in an 8mm x 6mm x 0.9mm-pitch QFN48L package.
