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Understanding Switching Devices and Power Loss in Electronics

Explore the characteristics and configurations of switching devices in ECE 442 Power Electronics. Learn about typical switching waveforms, turning devices on and off, and important times such as storage, fall, delay, and rise times. Discover the factors affecting power losses, including conduction and switching losses, gate driver power, and total power losses in electronic circuits.

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Understanding Switching Devices and Power Loss in Electronics

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  1. Characteristics of Switching DevicesTypical Switching Configuration ECE 442 Power Electronics

  2. Typical Switching Waveforms Turn device ON Turn device OFF ECE 442 Power Electronics

  3. ON and OFF Times Storage time, ts Fall time, tf toff = ts + tf Delay time, td Rise time, tr ton = td + tr Power increasing during switching ECE 442 Power Electronics

  4. Power Losses • The average conduction power loss ECE 442 Power Electronics

  5. Switching Power Loss fs = switching frequency tr = rise time ts = storage time tf = fall time ECE 442 Power Electronics

  6. Total Power Losses PG = Gate Driver Power ECE 442 Power Electronics

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