Switch Frequency and Radiate Emission Test result?

Sivakumar M S

Part Number: ISOW7842
Other Parts Discussed in Thread: ISOW7742

What is the switching frequency range of ISOW7842F device and radiate emission (RE) test result as per CISPR 22 CLASS B LIMIT? I don't find these information in datasheet. Can you please provide the same.

Thanks

Regards

Siva

over 4 years ago

0 Koteshwar Rao over 4 years ago

TI__Guru 57515 points

Hi Sivakumar,

Thanks for reaching out and for showing interest in ISOW7842.

The switching frequency of ISOW7842 is 60MHz. The CISPR 32 (earlier CISPR 22) radiated emissions test results of ISOW784x with Class B limit lines are included in the below application note SLLA368. This application note is also listed under Technical Documentation section of ISOW7842 product page.

Low-Emission Designs With ISOW7841 Integrated Signal and Power Isolator (Rev. C)

https://www.ti.com/product/ISOW7842#tech-docs

ISOW7842 is our first generation device that integrates isolated DC/DC converter. We now have second generation device ISOW7742 which offers significant performance improvements including radiated emissions improvements. Hence, we recommend you to use ISOW7742 instead of ISOW7842. Please find below a few useful links related to ISOW7742. Let us know if you have any questions, thanks.

https://www.ti.com/product/ISOW7742

How to Meet CISPR 32 Radiated Emissions Limits With ISOW7741

Regards,
Koteshwar Rao

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Switch Frequency and Radiate Emission Test result?