High current power supply problem

[billybob]

Hi everyone, recently I thought I’d pick back up my ZVS circuit. I’m using two irfp260 mosfets as the current switchers and here’s a quickly drawn schematic below.
It works pretty well so I decided to make a decent power supply to go with it. The only problem is it has eaten through two rectifiers already.

Any suggestions on how to fix this?

Thanks,
Ben

 

[rjenkinsgb]

I use 35A or 50A bridge recs for anything needing more than a few amps.
They are dirt cheap and pretty bombproof, plus easy to mount.

eg.

GBPC5010 | HY Electronic Corp Bridge Rectifier, 50A, 1000V, 4-Pin | RS

uk.rs-online.com

 

[MacIntoshCZ]

https://www.infineon.com/dgdl/Infineon-MOSFET_CoolMOS_S7_600V_active_bridge_SMPS-ApplicationNotes-v01_00-EN.pdf?fileId=5546d46271bf4f92017217bdb69a3a12

 

[billybob]

Thanks guys. Just bought a few big ones.