I made PCB according to manufacturers recomanded design, and placed all components according to LT Spice CAD proposal to achieve best efficiency for desired parameters. This design doesn't give desired output, it is just routing input voltage to output (with some low dropout), i believe it is in some wire-mode. I need quick solution for this problem.

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  • I am experiencing the same issue with the LTC3787, when the RUN pin is brought to below 0.7V, the VIN is routed to VOUT. I do have a 0.1uF on the SS pin. I checked that INTVcc is turning off as well.... I do not understand why the TG pins of the top gates are showing the VOUT voltage through the boost pins....