InnoSwitch3-CE Family Insulation problem for LED driver
We applied to an internationally and well known accredited laboratory for LVD certification of our LED driver designed with INN3162C. Although our product meets SELV specifications in terms of insulation, it is considered "no-insulation" by lab. The reason is given to be "inductive coupling" rather than "optical coupling". The article is as follows:
"Related to the Power Integration IC, at the moment we cannot consider valid neither SELV nor Basic Insulation. We are invenstigating this issue in the commitee but this is why at the moment we can only consider drivers with “No insulation”. Maybe in the future this issue will be solved and we can consider this also basic or double or also SELV."
How can we overcome this issue? If there is such a requirement in terms of lighting standards, we will make design changes. If there are arguments to overcome this issue, could you pls share them?
Best Regards
Dear EEC_Electronics,
I would like to inform you that the INN3162C device was evaluated and certified with Reinforced insulation per the IEC 62368-1 standard.
Reinforced insulation is an improved Basic insulation and provides the same degree of protection against electric shock equivalent to Double insulation. This device is provided with a minimum of 0.40 mm. for Distance Through Insulation (DTI) internally between the input and output sides or across its isolation barrier, allowing it to withstand higher voltage testing at 4000 VAC, compared to the basic isolation requirement of the said standard.
Additionally, the external creepage and clearance of this device complies with Reinforced insulation requirement.
Attached is the IEC 62368-1 test certificate obtained through TUV Rheinland, which serves as the basis for Reinforced insulation.
However, please note that the UL 1577 component standard, under which this device was also UL certified, does not include the option for Reinforced insulation.
I hope it helps. Thank you.
Best regards,
PI-Kazuya