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LM3409HV: HIGH WATTAGE LED DIMING DRIVER

Part Number: LM3409HV
Other Parts Discussed in Thread: LM3409

Tool/software:

I am trying to design a LED DIMMING CIRCUIT using LM3409 HV 

Vin 61 VDC

Vo  52 VDC

I LED  3.7 amps 

this light is used for video / photography so there should be no visible ripple in the camera / recording instrument 

PWM SIGNAL  40 Khz 

MOSFET USED CMD 5950

Please suggest what should be an ideal value for the Fsw 

KIndly suggest what inductor value i must select to get a linear variation , what percentage of 3.7 amps would be an ideal choice for the ripple current calculation 

Also if you have any other suggestion please guide