The TD300 is designed to drive one, two or three Power IGBT/MOS and has driving capability for pulse transformer. So it is perfectly suited to inter- face control lC with Power Switches in low side or half-bridge configuration. The typical application shown figure l implements the TD300 in a pulse controlled half-bridge drive. Positive and negative pulses are applied to the pulse transformer to charge and discharge the IGBT/MOS gate capacitance. More sophisticated secondary circuits provide low impedance gate drive and short-circuit protection as shown in appli- cation note AN461. On Figure 2, TD300 is implemented as a low side driver in a typical 3 phase motor drive. Fig ure 3 presents a general purpose low side gate drive. In both case, the current amplifier provides inter- facing between a sense resistor and an A/D converter.
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| | | | 01 0.3 0 5 0.7 0 9 11 1.3 Forward Voltage VF (V) | | | | |
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