Hi team,
Here are some questions about UCC28070.
(1) Why we should limit the max duty cycle?
(2) The out A and out B are average current of inductor calculated by synthesizer. Right?
(3) The programming range of the PKLMT voltage extends to upwards of 4 V to permit the full use of the 3-V average current sense signal range; however, note that the linearity of the current amplifiers begins to compress above 3.6 V. Why the peak average current is 3V?
(4)For soft start to be effective and avoid overshoot on VOUT, the SS ramp must be slower than the voltage-loop control response. Choose CSS ≥ CVZ to ensure this. What's Cvz?
Thanks