TPD4E001-Q1: Voltage rating of the cap at VCC

Scarlett Cao

Part Number: TPD4E001-Q1

Hi team,

May I know what voltage rating 0.1uF cap should be selected as Vcc bypass cap? The application is for USB ESD protection, ESD ±6KV.

Thanks

Scarlett

over 1 year ago

+1 Clemens Ladisch over 1 year ago

Guru 253780 points

ESD events do not have much energy, so they do not contribute enough charge to increase the voltage of the capacitor by a significant amount. (This is why ESD protection circuits route the current into the power supply's capacitors.) You do not need to increase the capacitor's rating.

0 Scarlett Cao over 1 year ago in reply to Clemens Ladisch

TI__Expert 3460 points

Hi Clemens,

Thanks for your reply. Does it mean if Vclamp typ is 16V, customer can choose a 16V rating cap？

Thanks

Scarlett

0 Sebastian Muriel over 1 year ago in reply to Scarlett Cao

TI__Genius 14110 points

Hi Scarlett,

Your understanding is correct, since Vclamp is 16-V (typ), this is the DC voltage the capacitor would see.

Regards,

Sebastian

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TPD4E001-Q1: Voltage rating of the cap at VCC