LM3478 duty cycle

National Semiconductor, The Power of Analog

This Discussion Forum is provided by National Semiconductor as a medium to allow engineers share their technical knowledge and experience. Questions and comments posted here are visible to all members of this website. Anyone can post questions or comments as well as responses as long as they are are registered on 'NATIONAL.COM'. As this is an engineer to engineer discussion forum, National Semiconductor assumes no responsibility for the accuracy of the information provided.

Start Here

Community Discussion Message Details

Create New Message
Reply to "LM3478 duty cycle"

dreaming
on 09/16/2008 at 09:25 AM

Category(s):	power.national.com
Subject:	LM3478 duty cycle
Message:
Hi i have several questions about the LM3478 as sepic controller 1) how do i select the sense pin capacitor? 2)Current sense threshold voltage in datasheet range from 135mV to 200mV, does it mean IsenRsen+D(Vsl+delta_Vsl) > 200mV will always trigger FET to turnoff 3) Vsl in the datasheet has a range of 52mV to 132mV, does it mean without Rsl the Vsl is 92mV and the max ramp i can get with additional Rsl is 132mV?

Navigation

Previous Main |Next Main

main message &
.. replies:

LM3478 duty cycle (dreaming)
. . RE: LM3478 Duty Cycle (fred.embuscado - national.com)
. . RE: LM3478 Questions (fred.embuscado - national.com)

View

Community Search

Please enter search terms below:

e.g.: power, use 'and', 'or' & wildcard '*' to narrow search