Part Number: TLV62130
Here in my company we are using MYIR z-turn board. On that board they used TLV62130 to convert 5 v to 3.3 v. There are two types of powering is available one is USB and another one is 5v adapter. While using the USB powering, it works just fine. But when using the adapter, PG output pin voltage fluctuates a lot (0 to 1.46 v - 72Hz).So the processor can't be turned on. the USB powering gives 0 v to 3.3 v. I have confirmed these thing using a oscilloscope. Please reply for this question, thank you.
Does the USB power the processor directly? As in it bypasses the TLV62130 or does the USB power supply the 5V input for the TLV62130?
Can you check the 3.3V TLV62130 design's schematic and confirm there is a pull-up resistor from PG to 3.3V rail? Also, can you probe the Vout of TLV62130 directly and confirm you see 3.3V there? PG should be equal to VOUT when VOUT is in regulation like figure 32 or 33 on page 23 of datasheet.
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.
In reply to Amod Vaze:
Thank you Mr. Amod.
Finally we found the issue is with in the 0 Ohm resistor (Fuse). And now. everything working fine.
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.