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PSpice Model for lnk625

Posted by: rubenadd on

Hello,

I am a hardware engineer from ADD and I would like to know if there is available a Pspice simulation model for the LNK625. I am designing a low-cost power supply based on those devices but I am having problems with them and I need to simulate this design. Thanks in advance.

Comments

Submitted by John Carpenter on 08/09/2010

Power Integrations does not support SPICE models for LinkSwitch. If you have design issues, you are welcome to post them for technical support.

Z. Cochrane

Submitted by rubenadd on 08/09/2010

Ok, thank you. The problem is i have a issue relationed with the IC, because your enginners looked the design and everything was ok and i have changed the values of different components to make proves, but power supply doesn't work properly, so it's like the MOSFET can't shoot properly. I can see something similar like a shoot but it's not complete, the voltage not fall down enough..........any idea?

Submitted by John Carpenter on 08/10/2010

Please send me scope photos of the drain voltage and current. Also, if possible, send me the schematic. This will help me troubleshoot your circuit.

Z. Cochrane