TPS53319: [HELP]The difference between Iind(peak) and Iocp

Fly young

Prodigy 170 points

Part Number: TPS53319

over 8 years ago

0 JohnTucker over 8 years ago

TI__Guru**** 191445 points

Do you have a question about this?

0 Fly young over 8 years ago in reply to JohnTucker

Prodigy 170 points

hi，
I want to know the meaning of Iind(peak ) and Iocp.
I can understand the Iocp.
(the Iocp contains Iind(ripple)/2,however,the Iocp contains Iind(ripple).)
Can you tell me the difference between Iind(peak) and Iocp?

0 JohnTucker over 8 years ago in reply to Fly young

TI__Guru**** 191445 points

ILp-p = (Vout / Vin) * (Vin - Vout) / (Fsw * Lout)
ILpeak = (ILp-p / 2) + Iout

The ac ripple current is essentially a triangle wave form that increase during the converter on time and decreases during the off time. The average value of the current is the dc output current. The peak current is then the output current plus one half of the ripple current.

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TPS53319: [HELP]The difference between Iind(peak) and Iocp