TPS62745 Slew Rate?

Michael Raleigh

Expert 3245 points

Other Parts Discussed in Thread: TPS62745, CC1310

Hello,

I checked the datasheet for the TPS62745 to see what the slew rate is for Vout changes and found the following comment:

However I could not find slew rate in the electrical characteristics. Can I get this info?

Thanks,

-Michael

over 9 years ago

0 Michael Helmlinger over 9 years ago

TI__Expert 5055 points

Hi Michael,

thanks for highlighting this. We will fix it with the next DS update.
Figure 38, 39 in DS shows the Vout slew rate from 2V to 3.3V.
Could you share more details about your application? Are there any concerns?

Thanks & Regards,
Michael

0 Michael Raleigh over 9 years ago in reply to Michael Helmlinger

TI__Expert 3245 points

Hi,

Thanks for the response.

It's for a customer trying to power a CC1310, which has some slew rate requirement.

Thanks,

-Michael

0 Felix Risch25 over 9 years ago in reply to Michael Raleigh

TI__Intellectual 1110 points

Hi Michael,

I just calculated the slew rate from Figure 38 and 39. The highest rising slew rate here is 6.25mV/us (from VSEL high to VSEL high+80us) and the falling slew rate is 1.25mV/us (VSEL low to VSEL low+240us). The DS of the CC1310 states a maximum slew rate of 100mV/us and 20mV/us.
I do not see an issue using the TPS62745.

Best regards,
Felix

0 Michael Raleigh over 9 years ago in reply to Felix Risch25

TI__Expert 3245 points

Thanks Felix

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TPS62745 Slew Rate?