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INA300: Alternative Solution for Type-C 48V Application

Part Number: INA300
Other Parts Discussed in Thread: INA200-Q1, INA200, , INA293, TLV3201

Dear Team,

Due to PD 3.1 will support EPR (up to 48V voltage), my customer requires a solution to replace previous INA300A.

Could you help to recommend a similar solution that could handle 48V voltage? 

Thank you.



  • Jim,

    Unfortunately, all of our newer comparator devices are made with a Vcm maximum of 36V. The best part I can recommend here for a 48V common mode with integrated comparator is the INA200-Q1 series. 

    Is the customer potentially open to using a current sense amplifier with external comparator here? 

  • Hi Carolus,

    Yes, I think we still could provide our proposal to them for reference. 

    Do you have reference circuit of INA200-Q1+external comparator? 

    That would be helpful.

    Thank you.


  • Jim, 

    Apologies for the confusion. The INA200 family is a separate family of current sense amplifiers that contain an integrated comparator, but this is an older device that is typically upgraded by the INA300 except for common mode range. 

    If the customer is willing to look at discrete solutions, I would offer something a bit more new, such as the INA293. Here is an example reference design alongside the TLV3201 (push-pull comparator). Together these devices can respond to an event in ~3us, but the customer can always select their own discrete comparator based on the needs of the system (if they need open-drain, faster response, cost optimized, etc.). I have included the TINA file for reference. 

    INA293 TLV3201 OCP.TSC