Forum Post: Internal boot diode of TPS40400
Hi, I am using TPS40400 for POL design, I have two questions about the internal boot diode in the IC.I got a damaged TPS40400 during test so output voltage does not come out, it seems like no signal...
View ArticleForum Post: RE: Cff or Cr//Cac feedback and noisy loads with LM3150, etc.
I've kept an eye on that and haven't seen any solder wick into vias. It's just sparse enough that sometimes it's hard to tell looking through the vias if there is adequate solder there. I've had the...
View ArticleForum Post: RE: BQ500210 operation at 12V
I would recommend the bq500410A (12V) configured as a Single coil, data sheet figure 6.The bq500410A can be configured with 1, 2 or 3 coils. The bq500210 power section is designed to operate at 19V...
View ArticleForum Post: TPS5405 efficiency at 24V
What is the power conversion efficiency of this chip at 24V (eg. at 1 Amp) ? The datasheet only lists efficiency at 12V (around 90% @ 1A). I need to know that there will not be too much heat to dissipate.
View ArticleForum Post: RE: BQ24090 - Problem in Test & Evaluating.
I don't have the EVM but will try to follow those on pages 6 & 7 of the EVM guide.
View ArticleForum Post: RE: BQ20Z95 question
Mike,The Cycle Count will update after the passed charge meets the accumulated discharge criteria. It will update during discharge.There should not be a connection between Cycle Count and a DFF fault....
View ArticleForum Post: RE: BQ34z110 Design Capacity and Energy scaling Factor
Peter,The Design Energy and all other parameters are cell based on the bq30z1xx devices. It looks like your latest calculation is correct. Also, like Ken noted this parmeter does not matter unless you...
View ArticleForum Post: RE: question about UCD3138 loop control?
hi Brandoni used UCD3138 designed a HSFB in our company project.it is topology is interlocked HSFB, power 1500W, input 40~60V, output 30V.when occur OCP, and restarted, the load switch from full load...
View ArticleForum Post: RE: the bq24160 questions
Dear sir,I have another question need consult with you, In our software, we configured the Ichg 2.5A when VIN is connected, then we use a 5V output power supply to test.When the power cable from the...
View ArticleForum Post: BQ24160 charging issue
Hi there,I am using a BQ24160 charger to charge a single cell 5900mAH battery.Everything went well except that upon full charge complete, the external power is disconnected and connected at a quick...
View ArticleForum Post: BQ51013A BOM
Bill,Is the coil the only required componen to produce 5V on the OUT pin, and what unused pins need to be grounded opposed to floating?I have a space constraint and I need as few caps and resistors as...
View ArticleForum Post: RE: LM1117I Operating Temperature
Thank you for the answer. I will be waiting for the new information.
View ArticleForum Post: Three phase PFC and digital power control?
Any suggestions on topologies for three phase PFC circuits suitable for control by eg the UCD3138? Is a three phase extension to the bridgeless converter design used in the UCD3138PFCEVM-026...
View ArticleForum Post: TPS2363 power supply for AUXB and AUXA
HiOur customer think trying to connect to a separate power for AUXB and AUXA.Should I need to be supplied from the same power for AUXB and AUXA?AUXA / B is shorted internally?Best Regards,
View ArticleForum Post: bq24640 vs bq24650
My application requires that I charge a 3000 Farad, 2.7 volt capacitor with a solar panel. I have found the TI bq24640 optimized for charging super capacitors and the TI bq24650 optimized for use with...
View ArticleForum Post: RE: UCC28600 SOFT START PROBLEM
Do you have oscilloscope waveforms showing what the UCC28600 pins are seeing? Can you please send the schematic and design calculator that was used for the design? If you increase the input voltage,...
View ArticleForum Post: RE: LMR14203 / LMR14206 in WEBENCH
Thank you for the very clear and thorough explanation.
View ArticleForum Post: RE: what is the minimum voltage difference between input and...
From what I know, min. diff. is 2.5V. Most of the parameters, however, are measured for a diff. of 5V.
View ArticleForum Post: RE: Are there any pin to pin alternate for UCC28600 controller
1. the 1V threshold on CS is the peak voltage measured from ground reference. You will have a triangular waveform, when the peak hits 1V (typical) the switching cycle will be ended.2. Is VDD falling...
View ArticleForum Post: RE: PMP2684 gerbers?
From what I can tell, Design Services built this design on the PMP2573 pcb. Here's the Gerbers for that board. There were no Gerbers specific to the PMP2684 in the folder.
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