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LP87524P-Q1: bode plot

Shinji Tsuji
Genius 12378 points
Part Number: LP87524P-Q1
Other Parts Discussed in Thread: LP87524-Q1

Hi team,

Could you advise if I can measure phase margin of LP87524-Q1 by inserting resistor in between FB and VOUT terminal 

just like general DCDC voltage regulator using FRA?

regards,

  • +1
    TI__Genius 11020 points

    Hello Shinji,

    Yes that is possible. Depends on the equipment you use, but we use 50ohm resistor to separate the FB and VOUT to allow injecting the signal to FB pin. Make sure the injected signal amplitude is not too high (10...20mV is good range).

    Thanks.

    Regards,

    Tomi Koskela