Forum Post: TPS40200 Overvoltage protection
Hi, Would like to know in the condition of the FB pin failure, what would be output? How does the Error Amplifier in the IC work? In the case of FB pin failure or mismount of the resistor divider (to...
View ArticleForum Post: RE: Battery Insertion / Battery detect in BQ27425-G2
Thanks for your answer, we will do it like you explain, using the 4.7MOhm tied to Vss, as we will work in stand-alone mode. I hope this works.Thanks!
View ArticleForum Post: RE: Bq20z75-v180 .senc file
Don't be quiet....the sence file that you have received from TI for programming BQ20z80 or other ship are often bad files. You must to load the .senc from a chip (evaluation board) and process with it....
View ArticleForum Post: Questions about the bq51050bevm
Hi,I'm using the bq51050bevm-764 module and I have some difficulties to understand where are the ports to connect an external load?What does mean the AD external adapter exactly?And what are the...
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Forum Post: RE: Question about the V_drop out in BO24203
Hi,I just looked into the datasheet and to my amazement I noticed the same thing:I guess, a TI representative sheds some light on this issue!Regards,Gautam
View ArticleForum Post: RE: BQ77910A recovery from OC (Over Current) and SCD (Short...
Dear WM5295,thanks for the fast replys, we want the BQ77910A to work for us, we are counting on it for more designs, but the currents will be about the same as here, so we have to solve this problem,...
View ArticleForum Post: RE: TPS61202 internal FB resistance value
Hi,I would like you to go through: http://processors.wiki.ti.com/index.php/SMP-TPS61200-MVK_MAVRK_SubmoduleUnder "Power Requirements" section, you can get further details.Regards,Gautam
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Forum Post: RE: Internal reference voltage at 25 °C & over operating...
Hi John,I do not have information on the reference voltage accuracy specifically. The output voltage range and accuracy specifications are overall device specifications and therefore include the...
View ArticleForum Post: RE: TPS92314 On/Off and Dimming
There is conflicting information about this IC on your website:It's called "Non-Dimmable" in the user guide:http://www.ti.com/lit/ug/sluua17a/sluua17a.pdfOn the website it says Dimming Method...
View ArticleForum Post: RE: Questions about TPS76201DBV
Hi Okamoto,I have a couple of questions about your schematic. I believe that you are taking your scope shot measurement with the probe connected at EVM-0V9 (circled in green). Is this correct?Is R562...
View ArticleForum Post: RE: tps55010evm-009 repeatability and performance
It's not an issue with the template but limitations of the IC for a 5V at 0.5A design. It is more optimized for closer to 1W applications while this is 2.5W. To use the same transformer, my first...
View ArticleForum Post: RE: TLV62090 output capacitance
There may be a theoretical limit for the Cout for DCS-Control but in practice, very large output caps almost always have some finite and significant amount of ESR. ESR helps stability by adding a zero...
View ArticleForum Post: RE: BQ34Z100 - Capacity goes to zero with no load after a day or two
Hi Tom,I still haven't got the failure to happen with the logger running, I'll run it for a few more days.One thing that we might be doing wrong is Impedance Tracking is not enabled. According to the...
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Forum Post: BQ77910a stacking - upper BQ shows Short Circuit Charge flag...
Dear All,We designing big project for some company and we need help with our design.We have two BQ77910a stacked with series fet configuration. Schematics are based on design note: The Basic Circuits...
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Forum Post: RE: Multiphase converter using UCD9224 and UCD74111 :Issues
Hello Brad,Please give your suggestion on the load regulation problem that we are seeing on our design . Problem :The load regulation of the 1V rail is not very good. When measured at very low load...
View ArticleForum Post: Not able to change the qmax cell 0 value in bq34z1xx
I am trying to update the initial value of the Qmax cell 0. but the value is not getting loaded and the i get NACK for the checksum data. i am sensing it because of the automatic q max value update. Is...
View ArticleForum Post: RE: BQ33100 Schematic Design
Hi Gang,1. The design is pretty much straight forward. As can be seen in the data sheet, the schematic is for a 5 series cap.2. if you look at the recommended voltages on page 4 of the data sheet, the...
View ArticleForum Post: RE: PTH05020W DCDC converter Only outputs max Voltage
Sorry to verify and un-verify,My follow-up question would be: Is there a limit to the overcurrent protection? Is it normal for a short as described above to destroy the function of the device? I would...
View ArticleForum Post: RE: EMC issues with the LM5576 regulator
Hi David,Please use an input LC filter to help with the EMI issue. There are Application notes that provide helpful suggestions to improve this further. Please refer AN-2162 and AN-2155.Thanks,Anston
View ArticleForum Post: RE: BQ2057 - Battery Charging While in Circuit
There is internal leakage through the IC SNS line. We recommend placing an isolation diode or FET on the Battery side of the pass element.
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