SpeedFit™ Design Simulator
Simulate and evaluate the performance of SiC-based power circuits and determine the right SiC device in seconds.
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I'm a novice in the field of electrical engineering and would like to consult you on some questions.
I have purchased CGD1700HB3P-HM3, CAS480M12HM3, and KIT-CRD-CIL17N-HM3. Now I need to measure the dynamic characteristics of these components within the temperature range of -40℃ to 175℃ through a double-pulse test. I plan to use a temperature control box to regulate the temperature, so all three parts need to be placed inside the temperature control box (-40℃ to 175℃). Can these three parts withstand such extreme temperatures (-40℃ to 175℃)? If not, could you please offer any suggestions on how to achieve the temperature variation?
Thank you very much. Looking forward to your reply.
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Thank you for your post, it has been approved and we will respond as soon as possible.
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Hi Emma,
Typically the performance of only the SiC MOSFET is tested over this operating range. The other components that you mentioned are not rated for such extreme temperatures, but they also should never see such temperatures in any real-world application. To apply the 175°C condition to the SiC MOSFETs within the CAS480M12HM3, users will typically place the module on a hotplate and increase the temperature setpoint until the NTC reads a steady-state 175°C (will require the hot plate to be >175°C). Technically, this practice violates the module's rated temperature range (the case temperature max is 125°C), but for double-pulse testing in a lab environment, this is acceptable and is common practice.
Please review the document below for additional recommendations on performing double-pulse testing with the HM3 evaluation kit, gate driver, and module. Page 25 shows an example of a module placed on a hotplate to achieve elevated junction temperature testing.
Wolfspeed Module CIL Evaluation Kits User Guide
Best Regards,
Austin C.
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Thank you for your reply.
Heating can be addressed by using a heating plate. However, for the low-temperature environment, currently our laboratory can only provide a temperature control box. If these three parts can be directly placed in the temperature control box for the low-temperature environment? If not, are there any cost-effective solutions?
Thank you very much. Looking forward to your reply.
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