MP6540HUG's Current-sense Amplifier frequency characteristics

To support,

I would like to know more about your product of MP6540HGU-Z.
It has three built-in current-sense amplifiers.
What is the range of frequency characteristics?


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Hello Kunihiro,

Thank you for contacting the MPS Forum. I have seen your question and will try to get an answer as soon as possible.

Thank you,

Vinh Tran
Field Applications
Monolithic Power Systems

An update with results would be greatly appreciated.


For Vin=50V and Ipeak=5A, 100kHz seems to be the max that the device can respond to. The device has shown to hit OTP at these conditions.

The current sense function has 2us setting time, so please set a sample delay for the SOX output for 2us after LS-FET turns on for any phase.

Thank you,
Vinh Tran


Is the 100-kHz frequency -3dB point, i.e. what is the current-sense ratio at that frequency?
Is it possible that we get the full amplitude-frequency characteristic (variation of the current-sense ratio as a function of frequency)?

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Hello dtomic.stype,

Please create a new forum topic.

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