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QP12W05S-37 Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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QP12W05S-37 Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
2 / 3 page The copyright and authority for the interpretation of the products are reserved by Mornsun Specifications subject to change without notice. QP12W 05S-37 A/1-2009 Page 2 of 3 Definition of Characteristics 1) Operation of short circuit protection ttimer 0V -5V 0V 90% Ttrip VI Vg 2) Switching operation VI Vg 90% 50% 10% tf tPHL tr tPLH Definition of Adjustment 1) Adjustment of soft turn-off time: (Operation of short circuit protection) When a desaturation is detected the hybrid gate driver performs a soft shutdown of the IGBT. The Soft turn-off time is 4.5uS. You can connect an Rf or Cf to adjust the Soft turn-off time. (Connecting Rf will increase the soft turn-off time and connecting Cf will decrease the soft turn-off time.) The soft turn-off time must be set 2.5uS< Tcf <10uS. Please refer to the below table. 0V 0V 90% VI Vg Tcf Tcf 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0 0.5 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 VD=15V Ta=25℃ Resistor Rf (KΩ) (PIN:14-15) The reference curve of soft turn-off time & Rf The reference curve of soft turn-off time & Cf 20 18 16 14 12 10 8 6 4 0 2 50 45 40 35 30 25 20 15 10 5 0 VD=15V Ta=25℃ Tcf (PIN:10-14) Capactiance Cf (pF) The soft turn-off time & Rf ,Cf Rf (Ω) Tcf (μS) Cf (nF) Tcf(μS) ― 4.5 - 4.5 1500 4.0 1 4.9 500 3.5 3.3 5.3 300 3.0 10 6.5 110 2.5 22 9.3 2) Adjustment of short-circuit detection time delay (Operation of short circuit protection) The short-circuit detection time delay is defined between the time in which a desaturation is detected and the time in which the gate voltage fall down to 90% of extent. This diver have a minimum short-circuit detection time delay, and you can adjust the short-circuit detection time delay by connecting the capacitor (Ctrip) between PIN12 and 16. But the short-circuit detection time delay must be set less than 3.5uS. Please refer to below table.(the data only for refer) 0V 0V 90% VI Vg -5V ttrip The short-circuit detection time delay & capacitor Ctrip Ctrip (nF) Ttrip( μS) - 1.6 0.33 1.8 1.0 2.2 2.2 2.4 3.3 2.6 The reference curve of Controlled time detect short circuit & Ctrip 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0 0.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 VD=15V Ta=25℃ Ttrip capactance Ctrip (nF) (PIN10-16) |
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