TPSF12C3: Power range

Hirotsugu Kobayashi

Mastermind 9530 points

Part Number: TPSF12C3

Hi team,

Is it possible to use a power system with any voltage as long as the capacitor has a withstand voltage?

Best Regards,

over 1 year ago

0 Timothy Hegarty over 1 year ago

TI__Guru 72702 points

Hi Kobaya-san,

Yes, the sense and inject capacitors provide the interface to the low-voltage IC from the high-voltage input.

Regards,

Tim

0 Hirotsugu Kobayashi over 1 year ago in reply to Timothy Hegarty

Mastermind 9530 points

Hi Tim,

At startup, is the voltage divided by the capacitor and IC parasitic capacitance, causing overvoltage to be applied?

Best Regards,

+1 Timothy Hegarty over 1 year ago in reply to Hirotsugu Kobayashi

TI__Guru 72702 points

Hi Kobaya-san,

The IC is powered by a VDD bias supply, typically 12-15V. The sense pins are terminally internally with 10kΩ resistors to GND and also have clamps (hence only a TVS is used on the inject side to clamp high dv/dt input surges).

Regards,

Tim

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TPSF12C3: Power range