SMPS circuit for LTspice

Thread Starter

FuseFuse

Joined Feb 8, 2017
27
Hi,

I'm searching for an example circuit to be run on LTSpice with a SMPS together with a common mode choke. The idea is to run a transient simulation in order to see the effect of this latest component on output voltage (noise reduction).
Do you have anything to suggest?
Thank you
 

Alec_t

Joined Sep 17, 2013
12,890
The test jigs (example circuits) provided for the SMPS ICs in the LTS "Power Products" folder may be useful.
 
Last edited:

eetech00

Joined Jun 8, 2013
3,209
Hi,

I'm searching for an example circuit to be run on LTSpice with a SMPS together with a common mode choke. The idea is to run a transient simulation in order to see the effect of this latest component on output voltage (noise reduction).
Do you have anything to suggest?
Thank you
Suggestion....First use AC analysis to check the filter Freq response/Attenuation.
For transient test, you could use a DC voltage source, with a varying quantity of superimposed ripple, to simulate an SMPS output. Connect the choke to the simulated output along with a typical load.
 

Alec_t

Joined Sep 17, 2013
12,890
Click on a SMPS device listed in the Power Products folder, then click on the 'Open this macromodel's example circuit' box to the right of the device symbol.
 
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