Estimating input current using TPS65100 - part not in SwitcherPro

Scott Kerstein

Other Parts Discussed in Thread: TPS65100, SWITCHERPRO

Hello,

The TPS65100 is not in SwitcherPro, so I can't estimate the input current requirement given Vin=5V with these output values. Is there a spreadsheet or other method of estimation?

Vout1 = 47mA max @ 9.84V

Vout2 = 1.8mA max @ -7V

Vout3 = 2.1mA max @ 19V

Vout4 = 21.3mA max @ 3.3V (using a MMBT4401 for Q1)

Thanks, in advance.

Scott

over 11 years ago

0 Christian Rott over 11 years ago

TI__Prodigy 30 points

Hello Scott,

The best way to estimate the input current when there is no SwitcherPro model or spreadsheet is via the given efficiency curves in the datasheet.

I made a small excel sheet calculating the input current to 141mA in your given case.

1447.TPS65100 input current.xlsx

Regards,

Christian

0 Scott Kerstein over 11 years ago in reply to Christian Rott

Expert 1395 points

Thanks, Christian.

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Estimating input current using TPS65100 - part not in SwitcherPro