Category | Diodes and Rectifiers

Advantages of the 1200 V SiC Schottky Diode with MPS Design

Posted on 22 December 2020

      Single- and three-phase inverters in solar, UPS or energy storage applications today demand for high efficiency, compact designs and extended reliability. Inverter implementation in these applications is limited by silicon devices’ high dynamic losses when operated at 1200 V. Alternative designs using 600 V/650 V devices can partially improve efficiency. However, they [...]

Freewheeling Diodes for High Performance Inverter Systems

Posted on 25 June 2020

      The engineers at Proton-Electrotex developed freewheeling diodes to operate at the reverse recovery process with high change rate of reverse recovery current (dIrrm/dt), and high power supply reverse voltage (VR) by means of proton irradiation technology, sintering technology and implementation of n’-buffer. The diodes are designed to be used as reverse diodes [...]

Smart Bypass Diode Paves the Way for Electronics in Solar Panels

Posted on 02 July 2020

      Reducing power dissipation by more than 80% of a Schottky diode enables smaller junction boxes and the use of electronics inside the new generation of highly efficient solar panels. By Chris Goeltner, Texas Instruments Abstract Increasing efficiency of photovoltaic (PV) panels is the most effective effort to achieve cost reduction when [...]

High Current Rectifier Diodes for Welding Applications

Posted on 30 August 2020

       The trend is to increase frequency from 1 kHz today to 10 kHz or even 20 kHz Resistance welding, although not a high profile power electronics application, has specific requirements which have led to the development of a family of application specific devices. The ever increasing demands are pushing the limits for [...]

Novel Low Leakage Current and Low Forward Voltage Drop Triangular Diode

Posted on 17 July 2020

      Protecting solar cells from reverse avalanche In solar panel applications the solar cells during periods of shadow can be permanently damaged due to reverse biasing of the cell into avalanche breakdown. IXYS introduces a new triangular rectifier diode connected anti-parallel to the solar cell as a bypass diode in a solar charging [...]

One More Way to increase the Recovery Softness of Fast High-Voltage Diodes

Posted on 29 June 2020

      By Chernikov A. A., Gubarev V. N., Stavtsev A. V., Surma A. M., and Vetrov I. Y., Proton, Electrotex ISC   Due to the development of the power converters based on the highvoltage IGBT and IGCT the demand for the high-voltage fast recovery diodes (FRD). The requirements to the high-voltage FRD of [...]

Fast Recovery Diodes for Demanding IGCT Applications

Posted on 14 June 2020

      Safe and smooth operation at harsh conditions Fast recovery diodes, though an integral part of inverter design, have seldom received the same attention as the switching elements like IGBTs or IGCTs. As a result, Clamp, Neutral-Point Clamping and Free-Wheeling Diodes often have limited the optimal equipment design. Recognizing this, ABB has developed [...]

Replacing Schottky Diodes with Super Barrier Rectifier Diodes

Posted on 01 February 2020

      The result is increasing power supply efficiency Schottky rectifiers have been used extensively in power supplies for the past 25 years. Schottky diodes feature a very low forward volt drop (VF), at reasonable leakage current, switching speeds that are in the nanosecond range, and provide a competitive advantage over conventional epitaxial p-n [...]

Advantages of SiC Schottky Diodes

Posted on 01 May 2020

      Fast switching are the targeted power electronics solutions SiC is discussed as a future high performance replacement of the silicon power components. The new technology enables products with almost ideal behaviour. Currently, SiC Schottky rectifiers are already available as qualified standard products By Ernö Temesi, Development Engineer, Vincotech Hungary Ltd.   This [...]

The Application-Specific Power Semiconductors Diodes

Posted on 01 December 2020

       One diode technology is not suited for all applications Development trends in high voltage power devices continue to move towards high performance, application-specific devices, and higher levels of integration and advanced packaging. The demand for electricity is increasing and at the same time, the cost of power generation is also going up. [...]