TPS92515: Open circuit protection

Shreenidhi Patil

Expert 3936 points

Part Number: TPS92515

Hello team

can you please help me with this query

regarding over voltage protection for TPS92515x, when LEDs are not connected on its output?

As i understand the output shall rise to vin and remain there as Duty cycle shall be 100%

Please help me get some more clarity of this matter

Thank you

over 8 years ago

0 Clinton Jensen over 8 years ago

TI__Mastermind 25500 points

Hello Shreenidhi,

That is about right. It will not be quite 100% since there is a maximum off time, but it will be close. In any case the output will be near the input voltage.

Regards,

Clint

0 Clinton Jensen over 8 years ago

TI__Mastermind 25500 points

I'm sorry, I meant maximum on time, not off time. The switch can only stay on as long as the boot capacitor stays charged. The effective duty cycle is still very high, but the output can only rise to near the input voltage.

Regards,

Clint

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TPS92515: Open circuit protection