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WEBENCH® Tools/LMR64010: Problem with Startup simulation; occurs when Bode Plot option is missing?

Randy Park
Prodigy 20 points
Part Number: LMR64010
Other Parts Discussed in Thread: LM27313

Tool/software: WEBENCH® Design Tools

HI,

Designing an 8 to 10V input, 24V output at ~20 mA step up supply. Started on WEBENCH, selected LMR64010. With Startup simulation, output just goes to ~ 0.5 V below input (switching diode drop) and doesn't go up to 24V. I tried a couple of other designs from WEBENCH and it seems that if Bode Plot option appears in Simulation, Startup simulation works as expected, if Bode Plot option is missing, it just outputs Vin-0.5V.

Is this normal or expected? Will LMR64010 work properly, or should I use one of the chips which simulates properly?

Thanks,

Randy