eldoLED® Temperature Sensor Analysis

Jonathan Warren and David Effa
Case revision date: 
6 Pages (Case Study)

Circuit Board layouts for L-Dot Pico producteldoLED, a privately-owned company, has its headquarters in Eindhoven, Netherlands. The company has branch offices in San Jose, California, and in Toronto, Canada. eldoLED develops and produces high-performance electronic drivers, as well as networking and control solutions for high-intensity solid-state lighting applications. Standard eldoLED products include: LedSync, DMX, and DALI compatible drivers and controllers, RF bridge interface cards and DMX dimmers. The eldoLAB prototype development team, located at the Toronto branch, designs and fabricates prototype products by reviewing internal specifications, developing circuit board layouts and fabricating physical prototypes [1]. 

Since the operating temperature of eldoLED products have to be monitored to ensure optimum performance, current eldoLED products include dedicated electrical temperature sensing components. These additional components increase both production costs and the size of each unit. Therefore, the eldoLAB team investigated an alternative temperature measurement method using components already available in any eldoLED product circuit board, as shown in Figure 1. 

Jonathan Warren, a co-op student from the University of Waterloo, was assigned to investigate the efficiency of identified temperature sensor technologies.   

Learning objectives: 

This case study covers concepts related to temperature measurements, microcontroller devices, and critical analysis for alternatives to current temperature measurement design. The content of this case study is related to the academic concepts covered in ECE 222 (Digital Computers) and is proposed to be used in this course. 

Key words: 
Temperature Sensor; LM60 Integrated Circuit; Microcontroller Device; Frequency; Temperature Coefficient
CEAB attributes: 
Module 01 - Case Study
Module 02 - Need analysis (Restricted to educators only)
Module 03 - Preliminary Design (Restricted to educators only)
Module TN - Teaching Note (Restricted to educators only)

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