I have built a small board to evaluate the LTC3769 as a synchronous 12V to 60V boost converter. My circuit seems to have problems starting up - it stays in a hiccup mode with a re-try period of about 200ms. I have attached my schematics - did I do something obviously wrong?
Also, INTC_CC is at 6V, rather than the 5.4V quoted in the data sheet. The voltage at VFB never reaches 1.2V.
I have experimented with different output loads, different output capacitances and more soft-start capacitance - all with no effect.
Any advice would be much appreciated,