Part Number: TPS63020-Q1
I read the document http://www.ti.com/lit/ug/slva726/slva726.pdf
In section 3.2 Backup Capacitor Charging Operation, it says that "The TPS63020 buck-boost converter operates bidirectionally and is able to transfer energy from its input to its output as well as from its output to its input." But in the datasheet of TPS63020, it doesn't say anything about the bidirectional energy transfer function. Does all the buck-boost have this function?
Besides, it says"The charge current is defined by the negative current limit of the TPS63020 buck-boost converter. Depending on the converters operating mode, either in buck mode or in boost mode, the negative current limit is typically between 0.6 A and 0.8 A." But I can't find the negative current limit in the datasheet of TPS63020.
Hi Wenxiu,In order to have bidirectional energy transfer, the converter (and its control) needs to allow bidirectional inductor current. This is possible in all synchronous converters, therefore also in TPS63xxx buck-boost converters. If you look at the 4-switch non-inverting buck-boost converter, it is symmetrical, and can operate in both directions.The negative current limit is not characterized for the TPS63020, but is typically between 0.6 A and 0.8 A. Best regards,Milos
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 Milos:
Hi Wenxiu,We haven’t heard back so we're assuming this answers your question. If not, just post a reply below, or create a new thread if the thread has locked due to time-out.Thanks and regards,Milos
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.