TLV7081: Battery Backup Design

Jack Loop

Part Number: TLV7081
Other Parts Discussed in Thread: TIDA-01519,

Hi,

I've been looking at the reference design from http://www.ti.com/lit/ug/tidudd1/tidudd1.pdf. I wanted to ask if anyone could provide an actual schematic for this circuit logic. I'd appreciate any help.

over 5 years ago

0 Chuck Sins over 5 years ago

TI__Mastermind 23425 points

Jack
this document is in regards to our TI Design TIDA-01519. All documents regarding this design can be found at ...
www.ti.com/.../TIDA-01519
Here is the link where you can find the schematic for the board.
www.ti.com/.../tidrt50.pdf
Chuck

0 Jack Loop over 5 years ago in reply to Chuck Sins

Guru 17870 points

I made the circuit, but when I disconnect power from the Wall Outlet, the battery backup doesn't seem to work. The only time it works is when I have the Wall Outlet plugged in, but its voltage is lower than the battery. How can I fix this?

0 kai klaas69 over 5 years ago in reply to Jack Loop

Guru 140200 points

Hi Jack,

what does not work? 0V at the output when you disconnect the power from the Wall Outlet?

What is the output voltage of the Wall Outlet and what is the battery voltage?

Kai

0 Chuck Sins over 5 years ago in reply to kai klaas69

TI__Mastermind 23425 points

Jack
unfortunately this got posted to the wrong forum. the TLV7081 was not the right part number. Not sure if this got resolved but I am moving it to the appropriate forum just in case.
Chuck

0 Gus Martinez over 5 years ago in reply to Jack Loop

TI__Mastermind 25331 points

Hi Jack,

Can you describe what you see in more detail? Refer to the following sections in the design guide:

3.2.1.2 Test Setup of Power Source ORing

3.2.2.2 Test Results of Power ORing

Gus Martinez

Amplifiers

Amplifiers forum

TLV7081: Battery Backup Design