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Subject: surge protection in an itty bitty space

Date: 08/26/03 at 11:08 PM
Posted by: Orson Cart
E-mail: o.cart[AT55]yahoo.com (replace [AT55] with @ to reply)
Message Posted:

In Reply to: Re: surge protection in an itty bitty space posted by Russ Kincaid on 08/26/03 at 10:15 PM:

An igbt (600V slow) with a resistor or zener string to the gate so that 5V is applied to the gate with 500V in say.

For short-ish impulses the igbt (can be SMT D2pak) can soak up a lot of power while clipping the incoming transient to 500 volt - some upstream inductance would be nice but not essential depending on the energy involved.

I have used this technique with larger igbts (600V 60A TO247/TO264 IXYS mainly) to good effect in a variety of product for clients.


Orson Cart

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