One of the most misunderstood ratings for transient voltage suppressor (TVS) diodes is peak pulse power (PPP). Many engineers will select surge protection components based primarily on rated peak pulse power and assume that their system will be well protected. After all, it seems logical to assume that a higher power rating means the device can absorb higher transient currents and therefore should be superior. While peak pulse power ratings may be considered in the selection process, the device should not be chosen solely on this parameter. To illustrate why, let us review the definition of TVS peak pulse power.
Asset tracking is one of the most promising applications for the Internet of Things (IoT). A variety of industries, such as transportation, logistics, healthcare, and food services, are investing in smarter technologies to replace siloed legacy systems with automated asset management solutions.
Managing a building certainly isn’t easy, but the Internet of Things (IoT) sure can make it feel that way.
In January 2020, Semtech joined the Euridis Association, an international non-profit industry association promoting the development of standards and protocols.
Semtech has introduced the first product in its new LoRa Edge™ platform – a highly versatile and low power software defined LoRa®-based platform that will enable a wide portfolio of applications for indoor and outdoor asset management. The first product of the platform, the LoRa Edge™ multi-technology asset management platform (LR1110), is a game-changing geolocation solution that significantly reduces the cost and complexity of locating and monitoring Internet of Things (IoT) assets in a secure environment.
Reducing Clamping Voltage
In part one, we learned transient voltage suppressor (TVS) clamping voltage is a key protection parameter. TVS manufacturers are constantly working to lower clamping voltage to keep up with ever shrinking IC geometries and increased sensitivity to overvoltage events. One method to achieve lower clamping is to engineer the device to “snapback” to a lower voltage once triggered. The snapback can be shallow, or deep depending on the intended application. One method of achieving a deep snapback is to design a self-triggering thyristor TVS structure (Figure 4).
Tags: Circuit Protection
I cannot tell you how many times I have heard this in reference to silicon-based Transient Voltage Suppressors (TVS). In all fairness, TVS manufacturers have probably perpetuated this notion. After all, we usually refer to these devices as TVS diodes or electrostatic discharge (ESD) protection diodes. Technically, a diode is a two terminal device that conducts current primarily in one direction. A TVS, or TVS diode, is a two terminal device that is designed to conduct current in the reverse breakdown region. However, calling it “just a diode” implies any TVS diode, or any diode type for that matter, can be effortlessly chosen and relied upon to protect your circuit. Following this assumption will most likely lead to disappointing results.
Tags: Circuit Protection
Geolocation is one of the most compelling and fast growing Internet of Things (IoT) applications. The anticipated market size for “Geo IoT” is expected to reach $74 billion by the end of 2025 from its current value of $40 billion, according to Market Insight Reports.
Since the 18th century, industrialization and overconsumption have contributed to the rapid depletion of nature's raw materials. Smart connectivity carves a path for us to be more efficient in our use of these materials, effectively reducing the rate at which we are consuming and wasting natural resources.
One of the greatest hurdles to plague any wireless industry is network coverage. That same hurdle is true for the Internet of Things (IoT). Over the last several years, Semtech has worked to create a vibrant ecosystem to drive demand for IoT applications based on its LoRa® devices and the open LoRaWAN® protocol. With a permission-less, omnipresent network in the unlicensed spectrum, some of the barriers to creating and adopting a new class of low power, wide area applications have been removed.