Forum Post: disable output from bq24271
i cannot find any method to completely turn off the output from the bq24271. i want to cause my pic32 to "power off", effectively unplug the supply voltage. is there anyway to do this?CD doesn't seem...
View ArticleForum Post: RE: Gauge selection
Seth,There is an EVM kit for the bq27520. Please see the link:http://www.ti.com/tool/bq27520evm
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Forum Post: LM3406HV, "strobing" Help Please!
Hi, I have a LM3406HV setup to drive at 1A. What i am getting is an output that is "strobing". Its flashing between 5 and 10Hz, irregullary.. I'd guess its on for about 50% The Dim input is tied...
View ArticleForum Post: RE: TPS92075 OVP flow and universal application
Hi Philip: This is out of the datasheet:Overvoltage Protection (OVP)The implementation of overvoltage protection is simple and built-in if using a two-coil magnetic (coupled inductor) to derive VCC. If...
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Forum Post: RE: UCD90120A - Where can we find the scaling factor in the GUI?
Hi Quenton,You can find the scaling factor in the "Other Config" tab in Configure.If you plan on monitoring voltages above 2.5V, it would be best to divide them down to about 1.6V at the MON pin. If...
View ArticleForum Post: RE: TPS92075 Design Calculator
Hi - Yes, thanks for letting us know. The schematic in the datasheet is correct. The schematic in the Excel Tool has been fixed and should update on the web soon.Yes, you can use 1k for R11.
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Forum Post: RE: LM2621 BOOT voltage requirements
Hi Kent, I pulled open a webench design with your specs and am seeing the same thing. In fact, this 5V supply is added for any output other than 5Vo. Even at 4.9Vo and 5.1Vo, this additional supply...
View ArticleForum Post: RE: TPS2410 Problems
Lucas,Sorry for the slow response. I was out on vacation.You mentioned that the C current was outside of the Spec. Are you measuring the C and Vdd current or just the C current.With the A current, are...
View ArticleForum Post: Using BQ24725A with non Li cells
This device is categorized as a LI+ battery charger. As long as a battery pack falls with in the Voltage and Current capability of the device, Could this be used for other chemistry cells ?More...
View ArticleForum Post: RE: PTN78020W common output voltage control
Willern: Thanks for the response. Each unit has a separate power-up sequence. There can be minor delays in power up which can force the unit into instability and unpredictable operation. The...
View ArticleForum Post: RE: LiSoCl2 gauging
The only option for primary cells is the bq272xx devices. I would recommend checking out the bq27210. An app note for configuring as a primary gauge is below:http://www.ti.com/lit/an/slua367/slua367.pdf
View ArticleForum Post: RE: LM317 used as a Constant Current Source
Ron, How are you? Just checking in to see if you've run the above mentioned tests?Thank you and Regards,Satish
View ArticleForum Post: RE: TPS650250 efficiency low.
Perry, As I mentioned before this is because you changed the Vout voltage. In general the more delta between Vin and Vout for buck converters the lower the efficiency. The graphs in the datasheet are...
View ArticleForum Post: RE: efficiency DCDC converter inside PMU [TPS650250PHBR].
Hi Masaya, This can be taken easy using the EVM. You can order an EVM here: http://www.ti.com/tool/tps650250evm-447Please read this app note before you start testing. It discusses proper techniques for...
View ArticleForum Post: RE: TPS40140
Hi Davenir,TPS40140 can work on a 5Voutput. But you have to seperate Vin of the power stage and VDD of controller. Because VDD of TPS40140 is max 15V. You can use at least 2xTPS40140 for 5V/60A...
View ArticleForum Post: Source Code for BQMTESTER
Hi all,Please help me to get the source code for BQMTESTER software.Thank youThanh Phan
View ArticleForum Post: LM5001
I am working on a design with the LM5001 (http://www.ti.com/lit/ds/symlink/lm5001.pdf) for 9 - 48V in, 12V out @ 1A. I am planning to use the 12V automotive SEPIC converter (Figure 10 in datasheet)....
View ArticleForum Post: RE: BQ20z65-R1 Data Flash Write Problem
Is it just that parameter which you can't change. Try changing the paramaters on the gg file and then loading it on the gas gauge. thanksOnyx
View ArticleForum Post: RE: bq20z45 current drawn when should be shutdown.
Tom, can I use this thread to continue with a related question. We are not able to get a good shutdown with the shutdown command (x10) every time. The voltage is below charger present and the current...
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