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Smart Power Switches Forum Discussions

User22278
Level 1
First question asked
Level 1
Hi all, I am trying to set a current limiter circuit with BTS7002 but I couldn't understand how to select Rıs value to a fixed current limit value. I read the datasheet but I couldn't understand. Could anyone help me?
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G_Anshika
Moderator
Moderator 100 replies posted 50 solutions authored 100 sign-ins
Moderator

Hi,

I have understood that you are looking for Rsense value as shown in the below figure (marked in red box) : 

G_Anshika_0-1659602123547.png

The sense resistor Rsense must be connected between IS pin and module ground if the current sense diagnosis is used. Rsense value has to be higher than 820 Ω to limit the power losses in the sense circuitry.
A typical value is Rsense = 1.2 kΩ.

Best Regards,
Anshika

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