This reference design is a solenoid driver that implements additional monitoring control as well as diagnostic features. These features enable for example: lose spring detection, valve aging recognition and dynamic control of solenoid current. This predictive maintenance feature-set helps to decrease or even eliminate factory downtime. Moreover, the control of the solenoid current supports energy saving and increased valve lifetime. The integrated IO-Link interface provides the possibility of communication between Programmable Logic Controller (PLC) and actuator to leverage the predictive maintenance feature-set. The switching of the solenoid is realized using the PWM output of the microcontroller (MCU) to drive the current of a FET, which then supplies the solenoid switching current. The current signature is sampled with the on-chip 12-bit ADC and stored in the on-chip FRAM. This reference design implements a moving average calculation and a calculation of extreme values of the current signature curve.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Smart Solenoid Driver With Predictive Maintenance Reference Design | Jul 17, 2017 | |
| Technical article | Is your factory smarter than a fifth grader? | PDF | HTML | Sep 28, 2017 | |
| White paper | Detection of Plunger Movement in DC Solenoids White Paper | Jun 12, 2015 |
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