STEVAL-IFP035V1 STMicroelectronics

STEVAL-IFP035V1 Data brief Isolated and non-isolated digital inputs on evaluation board based on CLT03-2Q3 self-powered current limited termination device Features 2 isolated high-side / low-side digital inputs 2 non-isolated high-side digital inputs 60 V and reverse input plugin capable No power supply required Safety test pulse High EMI robustness thanks to integrated digital filter IEC61131-2 type 1 and type 3 compliant RoHS compliant Description The STEVAL-IFP035V1 evaluation board is designed to help you evaluate circuit protection strategies for factory automation using digital-input current limiters between industrial sensor devices and processing units such as programmable logic controllers (PLC). The board embeds two independent CLT03-2Q3 self-powered digital input current limiters, each with two isolated channels able to drive isolated opto-coupler or non- isolated LVTTL digital input terminations. These devices also feature reduced power dissipation and improved EMI robustness for safer and more reliable operation, and to allow designers to build solutions with greater I/O module density. The board also observes other standard industry requirements such as reverse polarity operation and one-minute overvoltage tolerance, and jumpers are included to Product summary generate test pulses along any of the lines to verify normal operation. evaluation board based on CLT03-2Q3 self- STEVAL- powered current limited IFP035V1 termination device Self powered digital CLT03-2Q3 input current limiter Application scenario Safety PLC DB3936 - Rev 1 - May 2019 www.st.com For further information contact your local STMicroelectronics sales office.GPIO pins CLT03-2Q3 CLT03-2Q3 P L C STEVAL-IFP035V1 Overview 1 Overview The STEVAL-IFP035V1 board has four input connectors for four industrial digital sensors, such as proximity, capacitive, optical, ultrasonic, and touch sensors. Two of the inputs are intended for isolated lines with opto- couplers on the outputs, while two inputs are intended for standard non-isolated outputs. Each input then feeds directly into one of the two independent channels in one of the two embedded CLT03-2Q3 current limiters. The channels in the current limiter immediately rectify reverse polarity connections and proceed to filter and regulate the signals to deliver appropriate outputs for the isolated or non-isolated lines destined for the GPIO ports of a logic processor, such as microcontroller in a programmable logic controller (PLC). The board also includes jumpers to allow you to send test pulses through any of the channels to verify normal operation. Figure 2. Block diagram test STEVAL-IFP035V1 pulse proximity EMI & ESD GLITCH FILTER optical REV POLARITY VOLTAGE REG FAULT MODE non-isolated pull down MCU test e.g. STM32 pulse STM8 or similar EMI & ESD isolated GLITCH FILTER opto-couplers REV POLARITY VOLTAGE REG ultrasonic FAULT MODE touch The input side of the CLT03-2Q3 current limiter is characterized by certain voltage and current ranges that delimit ON and OFF regions, as well as transition regions between these logical high and low states. The device enters Fault Mode when the input voltage exceeds 30 V. DB3936 - Rev 1 page 2/7