LM5122: Equation (33)-2

Kuramochi Tadahiko

Guru 28715 points

Part Number: LM5122

Hi,

Dividing 2 disappears on equation (33) as following red rectangles.

Is this typo?

Best Regards,

Kuramochi

0 Yinsong Cai1 over 4 years ago

Hi Kuram0chi-san,

The "2" is combined in the "4" within the parenthesis. (See your other post for details)

For the ESR ripple, it needs to multiply by 2 to get the peak to peak value so it cancels out.

Thanks,

Yinsong

0 Kuramochi Tadahiko over 4 years ago in reply to Yinsong Cai1

Guru 28715 points

Hi Yinsong-san,

Thank you for your help.

>For the ESR ripple, it needs to multiply by 2 to get the peak to peak value

What is the peak to peak value? Is this the value of Vripple?

If you show me a waveform, it will help my understanding.

Best Regards,

Kuramochi

0 Yinsong Cai1 over 4 years ago in reply to Kuramochi Tadahiko

Hi Kuramochi-san,

Please see the waveform. The ESR ripple is just the current ripple multiply ESR value so it has the same square shape as the current waveform.

Thanks,

Yinsong

0 Yinsong Cai1 over 4 years ago in reply to Yinsong Cai1

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