LM5064: Regarding LM5064 Current limit

moon kye

Part Number: LM5064

Hi,

When i read pp13 of Current Limit, 'In the current limiting condition, the GATE voltage is controlled to limit the current in MOSFET Q1.'

Could you explain what the controlled means?

Thanks,

Moon

over 2 years ago

0 Avishek Pal over 2 years ago

TI__Mastermind 30915 points

Hi Moon,

Thanks for reaching out. Controlled means the GATE will be regulated in its saturation or linear region to limit the current flowing through the MOSFET.

0 moon kye over 2 years ago in reply to Avishek Pal

Prodigy 100 points

Hi Avishek,

Thanks, for the reply.

What kind of regulation does GATE do ?

Is it pulse width modulation, or on/off time changes?

Or when current limit reaches, GATE voltage reduces to go the linear region from saturation region ?

Please explain some more about this operation.

Best Regards,

Moon

0 Avishek Pal over 2 years ago in reply to moon kye

TI__Mastermind 30915 points

Please go through this app note.

Robust Hot Swap Design (Rev. A) (ti.com)

+1 Avishek Pal over 2 years ago in reply to Avishek Pal

TI__Mastermind 30915 points

GATE voltage reduces to go the linear region from saturation region. May I know your query exactly?

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LM5064: Regarding LM5064 Current limit