Viper265K Buck Converter Design - 0.5% duty cycle ?

[shrikantB]

Hi,

I am presently planning to use Viper265K part for High Voltage Buck converter design with below requirements:

	Min	Max
Vin	200	900	V
Vout	4.5		V	+/-5%
Iout	0.44		A
Pout	2		W

With above requirements the duty cycle for the device is observed to be 0.5%. Please can you 

help me to know if the device can be used for such low duty cycle and what would be recommendation from your side 

for achieving above design requirement.

[shrikantB]

Hi Peter,

Thank you for your support and reply to the queries in the thread I will try to make a tradeoff on either load or input voltage for the Buck so that the Viper267K can be utilized.

Thanks again.

Regards,

Shrikant Bhairavkar