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: TPS65987D
We would like to know if TPS65987DDH has FW OCP (overcurrent protection) for 9V/15V/20V.
Based on the app notes http://www.ti.com/lit/an/slva994/slva994.pdf, it mentioned 5V examples but there are no 9V/15V/20V examples. Inside the app note, it also mentioned that Overcurrent Clamping is only implemented when the TPS65987DDH is sourcing 5 V on VBUS.
Our customer set the source capabilities setting of 15V 3A 150% peak current. When connected to one PD Sink A, the cutoff (FET open) current was 4.6A, and when connected to another PD sink B, the cutoff current was 5.5A. Do you know why there is difference in the cutoff current when using the same 987DDH device?
Yes the TPS65987D will provide FW OCP during a high voltage contract, not just for 5V. Within that same app note, it explains this as well as within the datasheet. Hope this helps answer your question.
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 Adam Mc Gaffin:
Appreciate your clarification that FW OCP works for higher voltage contract. This is helpful. I have 2 questions here.
1) Based on Table 1. IOCC Programmable Settings for Overcurrent Clamp Point, can I say that 150% Peak Current settings gives the min 4.5A, typ 5A and max 5.5A for 15V/3A setting on Transmit Source Capabilities?
2) Our customer set the source capabilities setting of 15V 3A 150% peak current. On the same 987DDH device, when connected to one PD Sink A, the cutoff (FET open) current was 4.6A (continuous current); and when connected to another PD sink B, the cutoff current was 5.5A (continuous current). Do you know why there is different cutoff current when using the same 987DDH device?
In reply to Gim Song:
After demonstrating our FW OCP settings using TPS65987EVM and USB-C-PD-DUO-EVM, it is showing that the current clamping (MOSFET is disabled) works with 100% Peak and 150% Peak settings. This case is closed with the customer.
Thanks for your support on this.
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.