Hi, I am having some problems getting a design based on the LT3748 to regulate. The input is 12V and output should be 5V,
Examining the scope output at the FET drain point it seems that the boundary mode condition is not being detected. The voltage at Vc pin is 740mV, so I believe the timer mentioned in the datasheet is not active.
Would this assessment be correct? Are there any adjustments I can make to the circuit?
CH1 : FET drain
CH2: SENSE pin
CH4: GATE pin