TPS7H5001-SP: TPS7H5001-SP Equations

mohamed ElHammady

Part Number: TPS7H5001-SP

Tool/software:

Hi,
this VSR 0.5V, what does it represent ? and can I change it ?

equation 42 & 46 seems not correct, how did we get 22.58A and 17.42A from what is written ?

Thanks!
Mohamed

6 months ago

+1 Daniel Hartung 6 months ago

TI__Mastermind 28345 points

Hey Mohamed,

VSR is supposed to be the voltage drop across the synchronous rectifier.
For I diode it will be around 0.5 V, for synchronous rectification with mosfets it will be lower.

For the equations you showed, the 20 is supposed to be on the outside of the division sign.
So its 20 +/- (XXXXX)

Thanks,
Daniel

0 mohamed ElHammady 6 months ago in reply to Daniel Hartung

Prodigy 110 points

Thanks Daniel,
what about these equations, what should be the unit of Leakage inductance H or µH and Fsw KHz or HZ and delts Vclamp should it be 0.5 for 50% ?

Best regards,
Mohamed

0 Daniel Hartung 6 months ago in reply to mohamed ElHammady

TI__Mastermind 28345 points

Hey Mohamed,

Everything should be in base units, except Delta VCLAMP which is in %age.
The equation actually comes from power stage designer which you can use for free from our website to help calculate:
https://www.ti.com/tool/POWERSTAGE-DESIGNER

Thanks,
Daniel

Power management

Power management forum

TPS7H5001-SP: TPS7H5001-SP Equations