TPS22976: rise time variation over all temp and process variations

Kazuhiko Hirano

Part Number: TPS22976

Hello,

TPS22976 datasheet table 4 shows typical rise time value.

My customer would like to know roughly +/- how much variations it would have after considering over all temperature range and device process variation.

Best regards,

K.Hirano

over 5 years ago

0 Shreyas Dmello over 5 years ago

TI__Mastermind 32650 points

Hirano-san,

We only provide typical specifications for timing as timing is dependent on the Ct pin, the input voltage and the loading condition of the use case. The typical time is the typical accounting for temp variation and process variation.

0 Kazuhiko Hirano over 5 years ago in reply to Shreyas Dmello

TI__Genius 15438 points

Hello,

Thank you for your response.

My customer would like to know roughly +/- how much it would have after considering over all temperature range process variation for especially only the following two cases.

Case#1

3.3V, CL = 0.1 μF, CIN = 1 μF, RL = 10 Ω, CT_1000pF

Case#2

3.3V, CL = 0.1 μF, CIN = 1 μF, RL = 10 Ω, CT_10000pF

Could you estimate the variation % for each cases, please?

Best regards,

K.Hirano

0 Shreyas Dmello over 5 years ago in reply to Kazuhiko Hirano

TI__Mastermind 32650 points

Hirano-san,

I assume that 3.3V is the input voltage. What is the bias voltage in this case? The bias voltage has affects the timing characteristics.

0 Kazuhiko Hirano over 5 years ago in reply to Shreyas Dmello

TI__Genius 15438 points

Shreyas

My customer is connecting VIN and VBIAS.

So, VIN = VBIAS = 3.3V.

Best regards,

K.Hirano

0 Shreyas Dmello over 5 years ago in reply to Kazuhiko Hirano

TI__Mastermind 32650 points

Hirano-san,

We can run some simulations and get data.

This timing data is not to be used as a guaranteed but only as a design reference.

Unfortunately, running these simulations may take a little time so I will get back to you early next week or before with the data. Apologies for the inconvenience.

Could you please email me directly at s-dmello@ti.com? I would prefer to take this support from E2E to email.

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TPS22976: rise time variation over all temp and process variations