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WEBENCH® Tools/TPS61170-Q1: TINA-TI Simulation of constant power load on energy reserve capacitance

Part Number: TPS61170-Q1

Tool/software: WEBENCH® Design Tools

I am attempting to create a simulation that will vary a current sink based on the voltage on a last gasp or energy reserve capacitance.  Below is the simulation.  I have tried various things to get the simulation to converge with no success.  I thought the issue might be withe the initial condition of 32V on the capacitor and no initial condition on the VCCS.  The expression for the VCCS is 10/V(VCAP).  The idea is for the VCCS to sink a varying amount of current to represent 10W of power.  Any help is appreciated.