INA240: Idea or techniques to use INA240 in higher common mode condition

Takashi Onawa

Part Number: INA240

Hi Team,

I want to use INA240 in 100V~120V common mode condition.
Do you have any ideas or techniques to use it in such the condition?

If you have any reference designs for such the use case, please tell me it.

Regards,

Takashi Onawa

over 6 years ago

0 Genatco over 6 years ago

Guru 55913 points

Hi Takashi,

We too like to see 200V max CM (in-phase) monitor. The 240 now work somewhat ok (low side) @170v Bus DC and have past tested it up to 195v low side monitors.

0 Guang Zhou over 6 years ago in reply to Genatco

TI__Mastermind 34250 points

Hi Onawa-san,

INA240, any IC for that matter, can’t be used outside its specified range. You might want to get in touch with my colleagues in system engineering to see our road map products. Or if you send me an email, I can loop the right persons in.

Meanwhile we have reference designs that are rated for high voltage applications, such as this one: http://www.ti.com/lit/ug/tidudk0a/tidudk0a.pdf

Regards, Guang

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INA240: Idea or techniques to use INA240 in higher common mode condition