Hello everyone,
I have developed a battery charger based on LM25011, but, I am not able to make it work. Even tough I have read the datasheet and the support forum, no idea came up, so, I appreciate any toughts.
The initial project was: Vin = 32V, Vout, 20.7V and Iout = 2A.
Below you can find the schematic.
In the beginning, the output voltage was just as equal as the input voltage, but, after some tests some IC burned. I noticed the IC was hot (maybe the temperature protection was working in order to protect it). So, I have tried to change some components, as C8 = 4.7uF, C11 = 10nF, R16 = 100kohms, R19 = 1kohms, R20 = 4.64kohms, L1 = 10uH and C13 = 10uF, in order to make anything works. After that, I decided to look at the layout.
I tried to minimize the input loop adding new conductor bettween C10 and C11 ground pads. It did not help. Tha same for the output loop, when I added a wire betweem R17 ground pad and the track close to the LM25011 thermal pad.
Thank you in advance!