G
Hello,
I am new to this forum.
First I would like to thanks all the participants for the quality of information you can find here.
It is amazing.
I am part of a start-up developing a medical device.
This medical device should comply with the IEC 60601-1.
The device is powered by an external power supply, that is 60601-1 compliant with 2xMOPP.
The device also includes a capacitor charger on the secondary side in order to step-up the voltage.
The capacitor charger chip is the LT3751 to reach up to 250V.
The capacitor charger includes a Flyback transformer in order to isolate the output stage from the input stage.
The isolation shall provide 2 MOPP as it is directly connected to the applied parts, type BF.
Therefore according to IEC 60601-1,
The transformer shall comply at least with the following paramters:
- creepage distance given on Table 12 : 8mm for 2MOPP @250V
- air clearance on table 12: 5mm for 2MOPP @250V
- dielectric strength on table 6: 3000V for 2MOPP @250V
I can't find yet on the market such transformers.
Anyone has an idea if I misunderstood something from the standard and could relax my requirements?
Or does anyone has an idea on how to provide this 2 MOPP in a different way?
Does custom transformers has to be developed usually for such applications?
Thanks in advance for your help
In feedback is welcome
Have a great day
I am new to this forum.
First I would like to thanks all the participants for the quality of information you can find here.
It is amazing.
I am part of a start-up developing a medical device.
This medical device should comply with the IEC 60601-1.
The device is powered by an external power supply, that is 60601-1 compliant with 2xMOPP.
The device also includes a capacitor charger on the secondary side in order to step-up the voltage.
The capacitor charger chip is the LT3751 to reach up to 250V.
The capacitor charger includes a Flyback transformer in order to isolate the output stage from the input stage.
The isolation shall provide 2 MOPP as it is directly connected to the applied parts, type BF.
Therefore according to IEC 60601-1,
The transformer shall comply at least with the following paramters:
- creepage distance given on Table 12 : 8mm for 2MOPP @250V
- air clearance on table 12: 5mm for 2MOPP @250V
- dielectric strength on table 6: 3000V for 2MOPP @250V
I can't find yet on the market such transformers.
Anyone has an idea if I misunderstood something from the standard and could relax my requirements?
Or does anyone has an idea on how to provide this 2 MOPP in a different way?
Does custom transformers has to be developed usually for such applications?
Thanks in advance for your help
In feedback is welcome
Have a great day