TPS61089: Leak current of the body diode at disable

PAN-M

Mastermind 8375 points

Part Number: TPS61089

Dear all.

How much does the leak current of the body diode when TPS61089 is disabled?
(In=5V, Out=9V, load=LED)

Regards,
PAN-M

over 6 years ago

0 Helen chen over 6 years ago

TI__Mastermind 40080 points

Dear Sir, Which body diode do you mean? Is it refers to the upper side MOSFET?

0 PAN-M over 6 years ago in reply to Helen chen

Mastermind 8375 points

Yes, it is MOSFET between SW and VOUT.
When the MOSFET turn off by EN, I think that the voltage of VIN appears to VOUT.
I want to know the current which flows when there is load in VOUT.

Regards,
PAN-M

0 Helen chen over 6 years ago in reply to PAN-M

TI__Mastermind 40080 points

Dear Sir,

When EN off, the current through the body diode is the load current.

0 PAN-M over 6 years ago in reply to Helen chen

Mastermind 8375 points

Thank you for answer.
Please wait for the result because I contact our customer.

BTW, Don't you have the IDR value?

Thanks,
PAN-M

0 Helen chen over 6 years ago in reply to PAN-M

TI__Mastermind 40080 points

Dear Sir,

What is IDR mean?

0 PAN-M over 6 years ago in reply to Helen chen

Mastermind 8375 points

Reverse drain current

0 Helen chen over 6 years ago in reply to PAN-M

TI__Mastermind 40080 points

Dear Sir,

We don't have this data. But since the body diode is not schottky, the leakage should be very small.

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TPS61089: Leak current of the body diode at disable