Hi,
We designed a buck converter with TPS54519RTER details below.
Vin = 5V
Vout = 1.8V/2A
I wanted to know the load and line regulation of buck converter. In lab i tried the below experiment.
Readings as below.
Constant Current mode | Actual output reading | |
Load set in DC electronic load | Voltage | Current |
No load | 1.8V | NA |
0.1 | 1.7752 | 0.099 |
0.2 | 1.7483 | 0.198 |
0.3 | 1.721 | 0.298 |
0.4 | 1.6934 | 0.398 |
0.5 | 1.6662 | 0.498 |
0.6 | 1.6385 | 0.598 |
0.7 | 1.6103 | 0.698 |
0.8 | 1.5822 | 0.798 |
0.9 | 1.5532 | 0.898 |
1 | 1.5241 | 0.998 |
1. is test set-up i made to find the regulation correct?
2. Why converter is not able to maintain a constant voltage when i vary the load?
Regards,
Pedaiah G.