Hello，
A schematic was created using the LM51772, as shown in the inserted PDF file.
The input voltage /current ：
Vin (min) = 12V;
Vin (noml) = 24V;
Vin (max) = 36V;
Iout (max) = 6A.
1. In the design schematics, the I2C functionality is disabled. Please kindly perform an overall inspection of the schematics first.
2. Furthermore, the CDC pin serves dual purposes: compensating for cable voltage drops and facilitating current sensing. Considering that the I2C interface is unused, what is its default operational role?
-
Moreover, if the CDC pin is functioning as a current monitoring device，should R(CDC) be determined using the equation V(CDC) = [V(ISNSP) - V(ISNSN)] × gm(CDC) × R(CDC) ？
Please kindly check whether the following parameter values are correctly assigned.
V(CDC) = 1 ？ gm(CDC) = 500uS？ [V(ISNSP) - V(ISNSN)] = R(ISNS) * Iout(max) ？Iout（Max）=6A or Higher current value?
-
When employing the CDC pin for cable drop compensation, what is the suitable resistor value to be connected?
3. If the CDC is used for current sensing, is it still necessary to utilize the ILIMCOMP pin for detection purposes?With the I2C interface disabled, is it impermissible to employ an RC (resistor-capacitor) configuration for the pin? How should this pin be handled?
4. If utilizing ILIMCOMP for current sensing, the following formula must be employed：
V(ILIMCOMP) = [V(ISNSP) - V(ISNSN)] × gm(ILIMCOMP) × R(ILMCOMP)
Please help provide the values for V(ILIMCOMP) and gm(ILIMCOMP).
Best wishes.
