TIDA-010042: 2kW MPPT Design

Thanks for your input, 

For 2kW MPPT design, we will have requirements of 45A output from MPPT. 
Based on datasheet of LMG2100R026, GaN has output capacity of 53A. 
Is it ok to use that part for MPPT operation? We will increase inductor rating and will match inductance value as per TIDA-010042.

Do you see any issue with this solution? Does TI have any other solution for 2kW MPPT? 

Thanks In Advance, 
Best Regards, 

Umang Butani

Hi Umang,

For 45A, 2kW application, you can look into LMG3100R017, this device has lower Rdson and is a single FET with driver. But please be noted that these devices can dissipate heat from both sides, so a heatsink attached on top can help a lot.

LMG3100R017 data sheet, product information and support | TI.com

Thanks,

Bowen

For MPPT, can you please help to know if I use # LMG2100R026 for 40A to 45A instead of #LMG3100R017.

Is this works?

Hi Kaushik,

If you want to use LMG2100R026 to run 45A, you need to run at very low switching frequency and have a very good cooling system to have very low thermal impedance from die to ambient.

I still suggest you try LMG3100R017(with a good cooling system), or you can also try to use LMG2100R026 to configure a two-phase interleaved topology to reduce the current of LMG2100R026 (make it half for each LMG2100). Heatsink is needed to help control the die temperature.

Thanks & Regards,

Bowen