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BM63764S-VA Datasheet(PDF) 9 Page - Rohm |
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BM63764S-VA Datasheet(HTML) 9 Page - Rohm |
9 / 24 page 9/20 BM63764S-VA BM63764S-VC TSZ02201-0747AB500020-1-2 © 2014 ROHM Co., Ltd. All rights reserved. 20.Jun.2017 Rev.005 www.rohm.com TSZ22111・15・001 Timing Chart 1) Short Circuit Current Protection (protection with the external shunt resistor and RC filter) a1. Normal operation: IGBT ON and outputs current IC. a2. Short circuit current detection (SCP trigger) It is recommended to set RC time constant of 1.0 to 2.0µs so that IGBT shuts down within 2.0µs when SCP is triggered. a3. All low side IGBT ’s gates are shut down (soft turn off). a4. All low side IGBTs turn off. a5. FO outputs for tFO=20µs (Min). a6. LIN=L a7. LIN=H, but all IGBTs keep OFF during SCP=H. a8. FO finishes output , but IGBT s don’t turn on until inputting the next ON signal(LIN=L→H) IGBT of each phase can return to normal state by inputting ON signal to each phase. a9. Normal operation: IGBT ON and outputs current IC. Notice SCP works only for low side IGBT only. In case of SCP trip and FO output, please stop controlling IPM quickly to avoid the abnormal state. a8 LIN a7 SET RESET a3 a9 a1 a4 a2 Delay by RC Filter a5 SCP IGBT Gate Ic FO SCP Trip Current SCP Trip Voltage a6 Shunt Resistor Voltage Figure 10. SCP Timing Chart |
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