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Technical Features

June 2020
Extremely Compact Isolated Auxiliary Supply for SiC-MOSFET Gate Driver

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Figure 1: Topology of a SiC-MOSFET half-bridge with highlighted parasitic inductances

With the increasing spread of high-voltage power semiconductor components build with silicon carbide (SiC) technology, which operate at switching frequencies above 100 kHz, the requirements for their gate control are becoming more and more demanding. Besides the bipolar, positive and negative driving voltages fo
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Date:
09/30/2020
 Electric Vehicle Power Electronics Push Test Equipment Performance Limits

Table 1. LV123 Operational status vs. operating voltage ranges

Power Electronics in New Vehicle Systems Automotive electronics are changing in dramatic ways. While it is true that “traditional” internal combustion engine vehicles still dominate the market, the automotive world is racing into a disruptive future. The market demand for reduction in the use of fossil fuels
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Date:
06/30/2020
Automotive Exterior Lighting Solutions

Figure 1. Power Consumption Characteristics Comparison

Changing exterior lamps from bulbs to LEDs makes it possible to achieve smaller, thinner light sources, allowing more manufacturers to improve lamp design. To improve design, it is necessary to increase LED output while reducing the power consumption of the LED drive control circuit along with size. At the same ti
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Date:
06/01/2020
DALI-2 and D4i Certifications Add Features and Benefits

DALI-2 Tunable White

DALI (Digital Addressable Lighting Interface) protocol is a mainstream dedicated protocol for digital lighting control that enables the easy installation of robust, scalable and flexible lighting networks. The protocol, or language, is based on bi-directional digital communication between lighting-control products. Th
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Date:
06/01/2020

How Isolation Technology Enables Energy Sustainability

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Figure 1. Isolators are essential to ensure the safety of both devices (machines and equipment) and human operators

  Isolators are required to ensure our safety when operating equipment and to protect sensitive components within the equipment. They also maintain critical data (signal) integrity by providing immunity against external noise sources in safety-critical process control equipment. Countless devices must be i
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Date:
06/01/2020
Batteries Can Spark Problems, Right Chemistry is the Answer

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Figure 1. Saft's Xcelion battery line uses proprietary materials and design to produce enhanced safety and performance

Poor battery system design can hurt business and consumers. Several high-profile battery failures in recent years caused fires and expensive recalls. Batteries in Samsung’s Galaxy Note 7 experienced overheating ultimately linked to a battery defect. The resulting fires and explosions sparked two recalls a
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Date:
06/01/2020
Driving Brushed DC Motors

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Figure 1. Two-Pole Brushed Motor

Recent years have seen growing adoption of brushless DC motors. They are smoother and more efficient than brushed motors and have lower maintenance demands and higher torque-to-power ratios. On the other hand, brushless motors are also more expensive and require more complicated drive circuitry. This article e
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Date:
06/01/2020
2 MHz, Monolithic, Buck-Boost DC/DC Converter and LED Driver

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Figure 1. This LT3942-based demonstration circuit (DC2404A) showcases a high performance, compact DC/DC regulator solution specifically for, in this case, driving LEDs.

  To meet increasingly stringent size requirements for compact electronic devices, IC designers bring external components inside of their devices to minimize the external component count. Of the various circuits required to build any electronic device, DC/DC converters are as challenging to shrink in size as
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Date:
06/01/2020
LED Monitors Power Savings for PoE Security Cameras

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Figure 1. Industrial Security Camera in Action.

  Demand for industrial video surveillance equipment (Figure 1) is rapidly growing. Businesses benefit from using video systems that provide higher security for customers and employees. They help detect theft and monitor employees to make sure they are complying with safety guidelines. A new growth ar
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Date:
06/01/2020
Miniaturization for Current Sensing in Power Conversion

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Figure 1: Evolution of the current sensor’s size over the decades

The traditional way to measure current is to use Open Loop Hall effect sensors. The magnetic field created by a current is captured by a magnetic core and measured by a Hall element. More recently, dedicated ASICs helped to increase the overall accuracy of the system using advanced compensation techniques. LEM first mov
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Date:
06/01/2020