LTspice example Simulation circuit for LTM4660

Question

Dear ADI Team, 
 We are looking for the Example Simulation Circuit for LTM4660. 
 We want 7.4V as Output so i have used 7.32K at Vfb pin, ExtVcc connected to 12V. 
 We have tried to simulate but not getting the results as expected, always showing 212mV. 
 Attaching the circuit for reference and await for response. 
 Thanks, 
 Venugopal B

MStokowski · Answer

[deleted]

MStokowski · Answer

Hi Venugopal2255 , 
 I don't know much about this part, but if you look at the datasheet or even the test fixture/example circuit supplied with LTspice (Component > LTM4660 > Open Example Circuit/test fixture), you are under-capped on the input, output and the flying caps by significant orders of magnitude. Especially that latter bit&mdash;assuming you did not mean to set those flying caps to 0.1&micro;? Important for this hybrid part. 
 mike 
 If I run the example included in LTspice using your Rfb value yields your desired output. 
 LTM4660.asc

Popular Forums

Product Forums

Application Forums

Design Center Forums

Highlighted Webinar

Places

Libraries

Upcoming Learning & Events

Challenge Yourself!

What's Brewing

Places

Resources

Visit ContentZone

The Latest Read

New Release

Recent Technical Insights

Products Mentioned

Thread Details

LTspice example Simulation circuit for LTM4660