BeanAnimal
Premium Member
Being new to HPLED drivers and having no real world design experience, I have no idea what the rammifications of switching frequency and ripple have on the end result. Sadly, these are the variables that must be fiddled with to optimize a buck regulator like this.
Lower Qg means higher Rds-on and the datasheet indicates that there is a trade-off but (again) I am not sure of the rammifications on either side of the trade, other than the high Qg and heating.
So, in the end it may be worth trying to move the Cin cap to the alternate position (away from Vin) to accomodate the high Qg and low Rds-on
Lower Qg means higher Rds-on and the datasheet indicates that there is a trade-off but (again) I am not sure of the rammifications on either side of the trade, other than the high Qg and heating.
So, in the end it may be worth trying to move the Cin cap to the alternate position (away from Vin) to accomodate the high Qg and low Rds-on