028-029_EETE-VF

EETE MAY 2013

The power supply raises its output to overcome the voltage drop in the source leads and VLoad = VProgrammed. Thus, only with remote sensing can the accuracy of the power supply be applied to the load. Although power supplies can be considered simple from the standpoint that they are single-function instruments, their power output envelope, their design topology (linear vs. switching), their isolation performance, and their ability to perform remote sensing are all considerations that are important for sophisticated and sensitive design and test applications. Because some of these parameters aren’t specified, the power supply may have to be evaluated. As this article outlines, a few simple measurements can help ensure that a power supply meets the intended application. www.electronics-eetimes.com power. precision. excellence. Highly-integrated SCALE-2® ASIC chipset IGBT driver with plug-and-play functionality Advanced Active Clamping (A2C) driven by prime performance www.IGBT-Driver.com IGBT gate drivers feature on-board optical fibre interface for large-scale plants The TD-BD-IGFB05K IGBT (Insulated Gate Bipolar Transistor) gate driver released by Tokyo Electron Device (TED) features an on-board optical fibre interface that enables control of 1700V/1200A class IGBTs on a single board. As plants for solar power generation, wind power generation and industrial-use inverters grow in size, systems for controlling high-voltage and high-current loads are becoming more complex. However, the reliability of such systems that use cables to connect with control boards cannot always be assured because of “noise,” the effects of lightning, etc. The TD-BD-IGFB05K, sold by TED under the “inrevium” brand, is a general purpose IGBT gate driver that enables simultaneous control of two 1700V/1200A class IGBTs. It has been developed by adding an optical fibre interface to TED’s conventional IGBT gate driver TD-BD-IGGD05K. The TD-BD-IGFB05K is connected to a control board with an optical fiber, and directly connected with an IGBT module, so the risk of being impacted by “noise” or lightning is reduced, improving the security and reliability of the system. Alongside the TD-BD-IGFB05K, TED has released the TDBD IGCC05K, which is a downsized version of the existing TD-BD-IGGD05K. The 130x130mm TD-BD-IGFB05K has a dielectric strength voltage of 5000V, it takes 15V to 24V as input as well as a signal input via an optical fibre, and outputs 3.8W of power at 20A maximum on two channels. It is short circuit protected. Tokyo Electron Device www.teldevice.co.jp


EETE MAY 2013
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