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Using IRFP460LC instead of IRFP460 in halfbrigde SSTC running of rectified mains

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LAN_403

Phil33ts

Sun Jan 10 2016, 12:13PM

Registered Member #57473 Joined: Sat Oct 03 2015, 03:21PM
Location:
Posts: 11

Hey
I've bought some cheap IRFP460LC.
My question is are they a direct replacement to IRFP460?
Datasheet says:

wrote ...

â€¢ Ultra Low Gate Charge
â€¢ Reduced Gate Drive Requirement
â€¢ Enhanced 30 V VGS Rating
â€¢ Reduced Ciss, Coss, Crss

I want to use them in my halfbridge SSTC that runs on rectified mains 230V AC.
Will I have to change gate drive resistor (10 ohm atm) for this new transistor?
Thanks in advance!

Sigurthr

Sun Jan 10 2016, 04:25PM

Registered Member #4463 Joined: Wed Apr 18 2012, 08:08AM
Location: MI's Upper Peninsula
Posts: 597

It should work fine. You shouldn't have to change the gate resistance, as reduced Ciss. The RdsON is still higher than what I recommend, at nearly a third of an ohm, but people use the 460s successfully, it's just not my cup of tea dealing with that much heat.

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