Column Control DTX

Pulsed Characterization of Power Semiconductors Using Electronic Loads


Electronic Load Improves Power Semiconductor Measurements

An electronic load eliminates the selfheating problems associated with measuring the on-state voltage drop and transconductance (or current gain) of power semiconductors.

On-state voltage drop and transconductance (or current gain) of power FETs, BJTs, and IGBTs are temperature dependent, but are typically specified at 25 °C. However, it is difficult to obtain an accurate measurement of these parameters because the manufacturer’s test conditions can cause the device to dissipate significant peak power, which will raise the device temperature above 25 °C. Sometimes the amount of peak power exceeds the device’s static power rating by nearly 6:1! For example, an IRF540 FET is rated at 150 W continuous, but the transconductance gfs is specified at a test condition of 17 A and 50 V, or 850 W. If the device is subjected to this test condition too long it will self-heat, and its junction temperature will no longer be 25 °C, so measurements will be inaccurate



*Indicates required field

您希望以何种方式进行联系? *必填项
Preferred method of communication? 更改电子邮件地址?
Preferred method of communication?

请通过单击按钮,提供给是德科技您的个人数据。请在Keysight隐私声明 中,参阅有关我们如何使用此数据的信息,謝謝。


A sales representative will contact you soon.

Column Control DTX