cupoftea
Advanced Member level 6
Hi,
The NCL30000 looks like being good for single stage offline flyback LED driver useage.
Though for dimmable applications, would you agree, its not useful, since its switching frequency
would go too high and result in overly high switching losses.
I am referring to operation from a post PFC bus of 320-480VDC. (400V nom)
Our spec is 80Vout at 1mA to 400mA (ie dimmable)
NCL30000
We're pretty certain that to make a QR Flyback IC without a "minimum off time" is bonkers.
....eg, the FAN6300 has a minimum off time of 8us
FAN6300
I mean, if you are going to the expense of making an integrated circuit, then why not make it half decent?.....ie, adding in a simple delay such that the switching frequency doesnt go ruinously high during light load.
You get the impression that the guys who make these ICs are genius physicists who just dont bother to actually look into the actual use_case of the chip after they've made it.
The NCL30000 looks like being good for single stage offline flyback LED driver useage.
Though for dimmable applications, would you agree, its not useful, since its switching frequency
would go too high and result in overly high switching losses.
I am referring to operation from a post PFC bus of 320-480VDC. (400V nom)
Our spec is 80Vout at 1mA to 400mA (ie dimmable)
NCL30000
We're pretty certain that to make a QR Flyback IC without a "minimum off time" is bonkers.
....eg, the FAN6300 has a minimum off time of 8us
FAN6300
I mean, if you are going to the expense of making an integrated circuit, then why not make it half decent?.....ie, adding in a simple delay such that the switching frequency doesnt go ruinously high during light load.
You get the impression that the guys who make these ICs are genius physicists who just dont bother to actually look into the actual use_case of the chip after they've made it.
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