Category | April

650V XPT IGBT in SMPD Package

Posted on 29 June 2012

      High efficiency and robust devices Efforts to reduce global warming effects demand a more efficient use of energy in all segments of our daily life. Therefore more and more applications are controlled and regulated by power electronics. Examples are electronically controlled motors for air conditioners or pumps for refrigeration. By Iain Imrie, [...]

Root Causes of Failures of Disc Type Bipolar Power Semiconductor Devices

Posted on 29 June 2012

      In spite of simplicity in schematic design of the circuit with power thyristors and diodes application, practically a customer deals with a lot of details that should be taken into account to ensure reliable and continuous operation of power semiconductor devices (PSD). Basically all details of PSD application are determined by design [...]

High Efficiency Inverterised Air Conditioner Kit

Posted on 29 June 2012

      The Power to Innovate For many years, market research houses have been predicting a substantial increase in the sales of high efficiency home appliances. However, due to high costs, manufacturers resorted to selling these appliances as high-end low-volume products, so growth has been well below forecasts. By Mark Thomas, IGBT Product Marketing [...]

Pulsed Over-Current Driving of LEDs

Posted on 29 June 2012

      Exploring the needs of three types of over-current conditions Certain product requirements, like emergency vehicle lighting, specialized stroboscopic illumination or pulsed modulation for general-illumination dimming, call for an LED operation above the maximum data-sheet rating. Multiple variables affect both initial and long-term performance and reliability on an LED. These include thermal resistance, [...]

How to Boost Efficiency at Low Loads

Posted on 29 June 2012

      Small additional circuitry during standby can boost efficiency tremendously In a modern car several microcontrollers for safety, navigation, entertainment and comfort electronics have to be supplied. Most of them are switched off when the engine is not running but some need to be powered all time. For example, part of the navigation [...]