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Integrated ESD protection facilitates more reliable smart appliances2019/07/04


    The most popular technical term in 2018, AIoT, represents that we have entered a new era with the combination of “Artificial Intelligence” and the “Internet of Things,” and now it will continue to blow up in 2019. In order to reduce the gap between AI assistant and product features in the past, the collaboration of AI assistant with manufacturers of other peripheral products makes it easier for consumers to control many household appliances remotely. For example, a smart speaker can be placed anywhere in your home to create the most direct human-machine communication: operate hands-free with your voice. And the display on the smart refrigerator enables you to search for recipes. By using your personal ID virtual dialogue, it can read the recipes or morning news, or directly connect to a grocery shopping app to check the missing ingredients for a recipe from your refrigerator for you to organize the shopping list. New Smart Home experience provides you a convenient living space.


    In a smart home, the wireless network is formed by various communication technologies: Long-range and high-data transmission of WiFi network which requires high power consumption is usually used in wireless fans and robot vacuums. Zigbee, the low-bandwidth and low-power wireless mesh networking is used in smart bulbs and the top-selling product, Amazon’s Echo. Bluetooth 5 provides support for connectionless IoT service like beacons. The increased transmission range, rate and amount of data enhances the reliability of a mesh network while maintaining low power consumption and is widely used in some smart phones and wireless speakers. Having its own IPv6 address (address translation is no longer required) is the major feature of Thread that offers a highest level of security and is commonly used in thermometers/hygrometers and smart locks in North America. However, these products are likely to be easily affected by ESD (Electrostatic Discharge) from a human body or EOS (Electrical Overstress) from the power supply, which can lead to irregular operation of an electronic system, cause damage to the IC at the back of the device or even system crash. Besides, it also raises the problem of high return rates that can severely damage the brand’s reputation and image in serious conditions and result in loss of consumer trust.


    Nowadays, IoT devices require smaller wafers, more advanced manufacturing process and integration of various components to make the voltage application more and more diversified. There are more battery-powered devices for the IoT terminals powered by batteries. These requirements make the devices become even more vulnerable and sensitive to ESD which lead to more critical ESD testing standards. One of the basic test methods used to assess the ESD is IEC 61000-4-2 that the device needs to pass the contact 8 kV discharge by direct-pin injection. This method is intended to stimulate a human-body electrostatic discharge into the device. As long as integrating an appropriate ESD/EOS protection component into power supply structure at the time of design, it can be an efficient way to prevent damage of back-end products or system crash, and to avoid high-cost losses.


    Amazing Microelectronic Corp. possesses advanced technology of ESD protection design. To protect the power supply, we have developed a series of ESD protection components in same package size for different voltages and systems that allows the customers to freely choose according to the requirement of each device. In the past, the large-size SMA package adopted as ESD protection across the power supply terminals increased the cost of PCB’s board size. Currently, all the electronic devices are striving to get thinner and smaller with stringent requirements for component package. The small-size package allows easy integration into the system module and enables system ESD/EOS protection be more flexible. We use our patented technology to launch a series of high EOS protection components with DFN1610 package, unipolarity or bipolarity, single channel and ESD’s withstand level of each unit up to 30kV air/contact discharge, as shown in Table 1. The size of DFN 1610 package is only 1.6 mm x 1.0 mm with a thickness of 0.5 mm that can meet the requirements of most electronic devices. With the latest tech trends, Amazing Microelectronic Corp. will continue to develop more ESD protection components to meet market and customer demands, and offer the perfect solutions such as customized products to the customers.


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