This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: TPS563200
I used the Webench to come up with a 12V to 3.3V 2A regulator circuit. It is the basic circuit in the TPS563200 datasheet on Figure 19 with the R1 = 33.2k Ohms and R2 = 10k Ohms but I'm getting a voltage output of 4.75 volts.
When I use these values the 0.768 constant in the Vout equation under section 18.104.22.168 actually turns out to be 1.131. Is there something I'm missing or should I select R1 to be 19.5k Ohms with R2 = 10k Ohms?
In reply to Shawn Nie:
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
Ok Shawn, I see the recommended layout in Figure 36 of the datasheet. I'm attaching pictures of the signal plots on a scope but I'm going back to the drawing board and redoing the layout.
I have to do another reply to show you the SW signal
In reply to Robert Butts:
The SW waveform is irregularity, it seems unstable. Please update the result after you redraw the layout.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.