pasau
Newbie level 5
Hello, i have recently designed a 7V to 200V DC-DC SMPS converter, using LT3757. The output current is in the 1-10mA range. I use a DA2032 from coilcraft with a 1:10 ratio. At steady state, i get peak currents of 1.5A at the primary. My controller supports only non-isolated flyback, due to the nature of the resistive divider from the output.
I am looking to make another version with isolated output, preferably without an optocoupler, by taking the feedback from the primary, since the exact value of the output voltage doesn't matter too much. I have worked on the previous version using an example circuit from LT, i.e. p.30 of LT3757 datasheet. I am looking for the right controller for my isolated version, and hopefully an example circuit that achieves similar specs. i am searching for recommandations to achieve my goal.
Thanks in advance!
I am looking to make another version with isolated output, preferably without an optocoupler, by taking the feedback from the primary, since the exact value of the output voltage doesn't matter too much. I have worked on the previous version using an example circuit from LT, i.e. p.30 of LT3757 datasheet. I am looking for the right controller for my isolated version, and hopefully an example circuit that achieves similar specs. i am searching for recommandations to achieve my goal.
Thanks in advance!