TPS65150-Q1: input current is changed to nagative current

Fandy

Part Number: TPS65150-Q1

Hello

When the output load suddenly increased,the input current will inreased too, but why find nagative current ? nearly - 200mA

over 6 years ago

0 Liaqat Khan over 6 years ago

TI__Mastermind 18550 points

Hello Fandy,

Let me look into this on the bench using a TI EVM and feedback to you by 6/21/19.

Kind Regards,

Liaqat

0 Liaqat Khan over 6 years ago

TI__Mastermind 18550 points

Hi Fandy,

I am not seeing any negative current with load step. For boost circuit, input current should be same as inductor current. Is that where you are measuring? Can you please tell me your measurement conditions like Vin, Vout (Vvs), load step so that I can verify under your conditions as well? You might as well tell me VGH/VGL voltage levels also.

Kind Regards,

Liaqat

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TPS65150-Q1: input current is changed to nagative current