![]() ![]() v ~ o s shows the small-signal changes of output load R. vR_vin keeps the v ~ o s v ~ in s transfer function and vR_d keeps the v ~ o s d ~ s transfer function. ASICs will combine switching and control requirements in a single module.įig. The future of power electronics will almost certainly see the increasing use of ‘application specific integrated circuits’ (ASICs), at least for volume production. However, if Mosfets are available with the correct rating then these, with reverse conducting diodes for inductive loads, would be a simpler choice. side means that turning off thyristors requires a forced commutation circuit, and GTOs are better. However, they lack the reverse blocking capability which make the thyristor, Triac and GTO so suitable for a.c. Mosfets and IGBTs have the simplest driving requirements they are voltage controlled and the gate current is virtually zero during the ‘on’ period. Which of the power switches is chosen will be determined by cost, availability of rating to suit the requirement and the ease with which it can be turned ‘on’ and ‘off’. Denis Fewson, in Introduction to Power Electronics, 1998 1.4 CHOICE OF POWER SWITCH ![]()
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