TPS2640: OVP, UVP value

Hi, Amrit

Thank you for your reply.

I’m sorry.
I’m getting a bit confused.

Qusestion1)

If I short the OVP pin to RTN, can I understand that V(OV) will be set to the default V(OVPR) = 32.6V?

Is it right?

Qusestion2)

On the other hand, how can I use UVLO with the default V(UVP) = 14.9V?

Should I short the UVLO pin to VIN, or should I short UVLO to RTN?

Qusestion3)

Also, if I previously mentioned

R3 = 0Ω, R1 = 820kΩ (for example), and R2 = open,

but, then according to the relationships in (9) , V(OV) cannot be calculated because R3 is 0Ω.

When R3 is 0, do I need to consider it separately from the relationship in (9)?

Qusestion4)

If I am not using UVLO (when setting the value to near 0), what should I do?

Qusestion5)

Is it acceptable to leave R2 open?

Thanks

Hi, Amrit

Thank you for your reply.

Q1, Q2 is OK.

NEW Q1)
When using UVLO or OVP with the default settings, I understand that R2 and R3 should be set to 0 and shorted to RTN.

In that case, do you have a recommended value for R1? Is it acceptable for R1 to be open? 

NEW Q2)
If I want to use UVLO with a default value below 15V, what should I do?

I would like to set it to the smallest possible value.

In that case, is it okay to set R1 = 0, R3 = 0, and R2 = 820k (for example)?

Or should I set R1 = 0, R3 = 0, and R2 = open?

Thanks

Hi, Amrit

Thank you for your reply.

＞connect UVLO pin to RTN and OVP pin to RTN.

In this case, I understand that with the default settings (OVP = 32.6V, UVP = 14.9V).

However, I would like to use UVP below 15V. I want to set it to the smallest possible value.

n that case, is it okay to set R1 = 0, R3 = 0, and R2 = 820k (for example)?

Or should I set R1 = 0, R3 = 0, and R2 = open?

Thanks