Hi all, I work for a company which manufactures DC-DC multiphase buck converters for generic point of load products and VRMs for servers. I have a couple of questions about FET Drivers.
- I am evaluating FET Drivers for board design and suitability for our applications (per phase ratings are like upto 1Mhz switching frequency, 0.8V- 2V output, 12V input, 30A per phase. We use non- isolated buck converters and non isolated gate drive circuit. The FET driver that i am testing has adaptive shoot-through protection. I have come up with these parameters for my analysis
i) Minimum Pulsewidth ii) Effect of Pulse swallowing across load iii) Turn ON and Turn OFF propagation delays for HSGate and LSGates iv) Phase jitter at CCM DCM boundary v) Variation of ripple voltage across load vi) Discharge and charging profiles of bootstrap cap at various loads vii) System efficiency viii) Transient Response of system
Is there any parameter that one would look at? From your experience how would you look at possible effect of shootthrough?
Your comments are most welcome
VA