mindthomas
Member level 4
Hi there.
I am currently trying to build a step-up converter also known as a boost converter. I have decided to give the MAX1605 chip a go to start with and later design my own controlling circuitry.
I the found this application note for the design which is just what I want to do - be able to generate around 60V from a 3V power supply.
**broken link removed**
The problem is now that I can't seem to find the custom designed transformer (or what it is called).
It is a SUMIDA CMD4D13 4365-T020 which is a custom designed but commonly used dual winding transformer.
I have asked our local distributors but they all say that this component is out of stock and will first be restocked in over 5 weeks.
Therefor I would like to know how I can find a replacement for this transformer. The specifications the transformer needs to fit is:
Do any of you guys know a transformer that fits these needs?
I have been searching a lot on the internet, both looking at Bourns and Coiltronics but I've been unable to find any transformers with a winding ratio of 1:5.
Please have in mind that the current needed at the 60V output of the boost converter is not much. It is only a couple of milliamps, so the transformer should be kept small (SMD version etc.)
I really hope some of you guys have a clue as I am really in deep water.
Best Regards
Thomas Jespersen
I am currently trying to build a step-up converter also known as a boost converter. I have decided to give the MAX1605 chip a go to start with and later design my own controlling circuitry.
I the found this application note for the design which is just what I want to do - be able to generate around 60V from a 3V power supply.
**broken link removed**
The problem is now that I can't seem to find the custom designed transformer (or what it is called).
It is a SUMIDA CMD4D13 4365-T020 which is a custom designed but commonly used dual winding transformer.
I have asked our local distributors but they all say that this component is out of stock and will first be restocked in over 5 weeks.
Therefor I would like to know how I can find a replacement for this transformer. The specifications the transformer needs to fit is:
- Winding ratio (Np:Ns) ~ 1:5
- Primary inductance (Lp) ~ 4-5uH
- Saturation current (Isat) = 600mA max
- Resistance ~ 0.8 ohm
Do any of you guys know a transformer that fits these needs?
I have been searching a lot on the internet, both looking at Bourns and Coiltronics but I've been unable to find any transformers with a winding ratio of 1:5.
Please have in mind that the current needed at the 60V output of the boost converter is not much. It is only a couple of milliamps, so the transformer should be kept small (SMD version etc.)
I really hope some of you guys have a clue as I am really in deep water.
Best Regards
Thomas Jespersen