1 Amp limited 8 channel switch senses overload, cuts-off and restart automatically
Date: 02/06/2023
Industrial electronics engineers dread short-circuits and any such current overload issues. The new over-current protection featured 8 line switch in a monolithic package from STMicroelectronics can handle current up to 1 Amp in each bus-line. They are made to suit well for industrial control applications such as PLCs to drive below 1-Amp-range current loads such as motors and many such control units. These devices feature protection against over load and junction temperature on every line.
The new IPS8160HQ and IPS8160HQ-1 high-side octal switches takes less space by having packaged in compact QFN48L.
STMicro said IPS8160HQ and IPS8160HQ-1enhance reliability in PLC modules used for driving heavy loads and unidirectional motors in vending machines. Suggested applications include I/O peripherals in factory automation equipment, computer numerical control (CNC) machines, and in general for controlling resistive, capacitive, and inductive loads with one side connected to ground. Both switches have low on-resistance (RDS(on)) of 160mOhm (typ.at Deg 25C), which helps minimize power dissipation.
Once overload is detected these switches turn off immediately but later restart automatically, whereas other non-overloaded channels continue to operate normally. These device turns off immediately in the event of ground disconnection too. There is also overvoltage protection, undervoltage lock-out (UVLO), short-circuit protection, output-current limitation, and an over-temperature fault indicator.
Other features and benefits explained by ST in its release includes:
IPS8160HQ has a preset current limit of 0.7A. The IPS8160HQ-1 current limit is 1A. Both switches have an operating-voltage range from 10.5V to 36V and are featured to facilitate meeting international standards for industrial equipment. These include 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.
Users can quickly evaluate the IPS8160HQ and IPS8160HQ-1 driving and diagnostic capabilities with the X-NUCLEO-OUT9A1 and X-NUCLEO-OUT19A1 digital output expansion cards for STM32 Nucleo boards, which 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, from $4.02 for orders of 1000 pieces.
For more information visit
https://www.st.com/en/power-management/ips8160hq.html
and
https://www.st.com/en/power-management/ips8160hq-1.html
