Model Selection Guide:

1. First, Based on operating voltage V (effective value) to decide needed dielectric strength Vp, see Table-1

2. Choose Voltage Ratio based on input power voltage and needed IGBT drive voltage

    For example: When primary pulse is 15V,  for reliable IGT drive,  choose drive transformer with ratio 1:1 like DRT801/101A, DRT801/111B or DRT802/101A and so on; if primary is 24-30V, choose the ones with ratio 2:1 like DRT801/201A, DRT801/211B or DRT802/201A, etc.

3. Use product of volt-microsecond (∫udt ) and drive pulse frequency(Fp) to select models under the rule of the ∫udt  is no bigger than the rated ∫udt  of the DRT drive transformer at a specific Fp

    For example: Given that the pulse frequency 20KHz, pulse voltage 15V and pulse width 20μs, then ∫udt =15×20=300 μVs; Based on the rule of the given ∫udt (300 μVs) no larger than rated ∫udt  of the DRT drive transformer at the Fp(20KHz), in this case we choose DRT802 series; If given Fp 50KHz, pulse voltage 24V, pulse width 10μs, the ∫udt =24×10=240μVs, then we can choose DRT801 series.