Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Need help with this voltage regulator circuit simulation

Status
Not open for further replies.
E

electrophile

Member level 2
Member level 2
Joined
Aug 30, 2013
Messages
48
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Visit site
Activity points
1,677
Hi, I'm trying to build a 12V, 3A voltage regulator. Attached here is the simulation schematic and LTSpice IV libraries for TL431 reference voltage IC. Can you please tell me what is going wrong here? The simulation takes ages. I have a feeling the transient analysis inputs are off but I'm not sure how and what values I should input here for a 5 second plot.

Any help would be appreciated. Thanks.
 

Attachments

  • LM1085-sim.zip
    2.8 KB · Views: 99

The ideal current source crashes the simulation. You need to bypass it with a parallel diode, otherwise it can source MV to the circuit.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top