Online IGBT selection tool
27 October 2010
Power Electronics / Power Management
International Rectifier has announced the availability of a new online IGBT (insulated gate bipolar transistor) selection tool that enables design optimisation in a wide range of applications including motor drives, uninterruptible power supplies (UPS), solar inverters and welding.
The new tool evaluates application conditions including bus voltage, switching frequency and short circuit protection requirements. Located at http://mypower.irf.com/IGBT, the online tool provides an estimate of losses and suggests parts that can function within the given constraints. The tool also provides pricing for each part to enable designers to consider the effects of device choice on system cost.
IGBT selection requires evaluation of many parameters that cannot be simplified into a single metric. As switching losses can be traded for conduction losses, for example, calculating operating losses requires both operating frequency and bus voltage parameters, in addition to operating current. Also, the requirement of some motor drive inverters for minimum short circuit withstand time comes at the expense of higher losses.
IR offers a wide selection of IGBTs offering various tradeoffs in switching speed as well as devices designed for applications that do not have minimum short circuit requirements. The new selection tool helps designers make use of IR’s broad IGBT portfolio and weigh the performance tradeoffs.
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