TPS2121: Timing specification

Tamio Yokokura

Expert 3960 points

Part Number: TPS2121
Other Parts Discussed in Thread: TINA-TI

Hi, TPS212x support team

The following figure is shown in the datasheet. But the timing specification is not defined in the datasheet.

Please inform me about the specification of tON and tSET

Regards,

Tamio

over 6 years ago

0 Alpha H over 6 years ago

TI__Genius 10855 points

Hi Tamio,

Thanks for reaching out on E2E!

I'm discussing this information with our team, and I'll let you know if we have any updates. In the meantime, do you know any specifics regarding the timing configuration? Is there a specific tSET timing window they are trying to meet?

Thanks,

Arthur Huang

0 Tamio Yokokura over 6 years ago in reply to Alpha H

TI__Expert 3960 points

Hi, Arthur

My customer doesn't have the requirement of this timing yet. But the longer timing may occur the issue of system sequence. Please clarify the specification of this timing.

I attached my simulation file using TINA-TI. I designed using TPS2121 macro file obtained from the following E2E.

https://e2e.ti.com/support/tools/sim-hw-system-design/f/234/t/783401?tisearch=e2e-sitesearch&keymatch=TPS2121%20TINA-TI

The delay time between VIN1 and VOUT is depending on CSS (C5). Is this the macro model issue?

And also, When PR1 < CP2, VOUT is not switchover from VIN1 to VIN2. Is this also the macro model issue?

Please check if the macro model has some issue. If it has an issue, please provide me with the correct macro for TINA-TI.

TPS2121_TRANS - 12V_5V.TSC

0 Alpha H over 6 years ago in reply to Tamio Yokokura

TI__Genius 10855 points

Hi Tamio,

Please email me at a-huang@ti.com and I can provide more details regarding the modeling request and tSETx timing.

Thanks,

Arthur

Power management

Power management forum

TPS2121: Timing specification