TPS562211: How to calculate the R1 and R2?

Hi,

Yes, but you need to consider min/max value and even tolerance of resistors to calculate the worst case of enable Vin voltage. Thanks.

Hi Shipeng, 

Thank you for your reply. 
By the way, do you have an answer for Q1?

Hi Jerry,

The answer is yes.

Hi Shipeng, 

Q1. What are VEN(R) and VEN(F)?

Do you mean the following?
Q1.1. Is the VEN_RISE the same as VEN(R)?
A1.1. VEN_RISE=VEN(R)
         Which value is correct in section 6.5 or 7.3.6?
Q1.2. Is the VEN_FALL the same as VEN(F)?
A1.2. VEN_FALL=VEN(F)
         Which value is correct in section 6.5 or 7.3.6?

The values are different between Section 6.5 and 7.3.6. Could you please help to confirm which one is correct?

Hi Shipeng, 

Thank you for your reply. 
Could you please provide the latest version of the datasheet for TPS562211 which addresses this miswrite?

So, this calculator table correct but need consider the min/max value and even tolerance of resistors.

Hi Jerry,

I think we don't provide a calculator tool for this device. Where is it from?

Hi Shipeng, 

I personally created this calculator table.
Just want to confirm the R2 and VSTOP values if VIN=12V, VSTART=10.8V, VEN(R)=1.15V, VEN(F)=1.01V and R1=100k ohm.

Hi Jerry,

The equation (3) and (4) in datasheet is correct, but your result is not correspond to the equation, please double check.

Hi Shipeng, 

After considering the equations (3) and (4), is the following calculator table correct?

Hi Shipeng, 

Got it, thank you for your help.