Part Number: LMR23625
I've imported the unencrypted PSPICE model for LMR23625CF into TINA as shown below. (attached find simulation file)
NOTE: It would be really nice if TI could provide models for our own simulator.
This design requirements are Vin = 15V, Vout ~= 15V, Iout = 1A, with isolation, using only commonly available 1:1 coupled inductors or transformers for the magnetics.
In order for this circuit to work, the controller must use forced PWM and synchronous rectification, making the LMR23625 the least expensive first choice according to the parametric search table. This is similar to a flybuck approach, except the primary side is wired up in the inverting buck-boost configuration.
This circuit seems to start working but then runs in a convergence problem, or otherwise seems a bit unstable.
Can you please take a look at this and let me know which direction to go? The lack of external compensation on this device makes it a bit hard to use for anything beside a buck.
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