I Study ADP5090 UG-708 "EVAL-ADP5090 User Guide" document. The Figure 4. ADP5090 Pin 4(R7) show NC But Table 2.Bill of Material show R7-Resistor, 20k. Which one is correct? If R7 is NC ADP5090 efficiency will not be affected and how much affect? if it is a Resistor, 20K its purpose is? how do I calculate this resistor values and the meaning of representative is?
Best Regards, TWN
Thanks for your feedback.
The R7 should be 20kohm on the EVB. The MINOP function depends on the resistor. The MINOP bias current is 2uA. If the voltage of the MINOP pin is above the CBP voltage which equals to the MPPT voltage, the main boost will stop switching.