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TIDA-010042: Charging circuit

Part Number: TIDA-010042

Hi,

I'm wondering if you could explain how the TIDA-010042 circuit works in relation to keeping the correct voltage on the buck part of the circuit while also charging the battery.  That is, what part of the circuit is regulating the panel voltage to maintain the MPP and what part of the circuit is regulating the charge voltage. 

In my case, I am charging a lithium ion battery pack made from thirty 3.5Ah cells in a 3S10P configuration, which requires a charging voltage of 12.6V up to 17A. I am using a 120W solar panel with a stated MPP voltage of 18V (and MPP current of 6.67A).  

In the TIDA-010042 circuit, which components are used to achieve the required voltage for MPP and which components are used to achieve the required charging voltage.

I understand the P&O algorithm and related sensing inputs, but am having trouble understanding how the hardware/software.

Also, is there simulation software/files that I could use with this design as that may also answer my question.

Regards,

Ashley

  • Hi Ashley,

    There is no separate hardware for battery voltage regulation and MPP tracking. It is entirely done in the software - There is a voltage regulation loop and an MPPT loop running one within the other like we have inner current loop and outer voltage loop in current mode control.

    Currently no simulation file is available for this design.

    Regards,

    Salil