Forum Post: Qmax update ON BQ20Z70
hie there(DURING IMPEDANCE TRACKING),i have this problem:i have a 3s2p 20z70 based battery and its charging voltage is 12600mV and current 3080mA.However i am charging it with a 14700mV 1500mA CHARGER...
View ArticleForum Post: RE: BQ34Z100 I2C Communication
Ralf,If I were working on this problem in the lab, then I would check to make sure that the I2C signals have the proper pull-up resistors on them. We normally pull them up to 3.3V through a 10 kohm...
View ArticleForum Post: RE: BQ34Z100 + SMBUS
Abhay,There features are not supported by the bq34z100. You can check one of the bq20zxx TRMs to find the formulas.RegardsTom
View ArticleForum Post: RE: BQ34Z100 Write with standard command
Hi Tom,I see. I'm not sure if I'm doing it correctly. I'm sending 0x79 to address of 0xAA to read back 7 bytes of data, then i take the second and third byte of data and convert it to current. Could...
View ArticleForum Post: RE: BQ34z100 SoC is decreasing to 94% in a week
Ilja,The gg file is setup properly to support LiFePO4 cells. I checked the OCV table and 94% SOC would be correct for a 4-cell stack voltage in the 13.4V to 13.6V range. Have you determined whether...
View ArticleForum Post: RE: BQ34Z100 SOC resets to 100% after some discharge
Russ,It is normal for both the CHG and DSG flags to bet set at times. The CHG flag does not indicate that the pack is charging. It indicates that it is available to be charged. e.g. no faults.What are...
View ArticleForum Post: RE: Bq3060 Remaining Capacity in 0Ah
Ricardo,If you have a log file of a questionable condition, then that would help. It is common for SOC and RemCap to remain at 0 for a short period of time after the charging commences, if the...
View ArticleForum Post: RE: TPS61170 DCM and pulse skipping
Hi Jason,Sorry for the slow response. As September 19~21 is the mid-autumn festival holiday in China, I will work on this today.Best RegardsMing
View ArticleForum Post: RE: problem with bq2013h
Rocket,We will release the bq34z120 before the end of the year and it will support Ni-Cd and Ni-Mh cells. The pinout will be the same as the bq34z100, but the firmware will be optimized to support...
View ArticleForum Post: RE: Boost Flasher required.....
Hi Bhojaraj Gangolli,I'm sorry that 3.8A is the typical value, and you should take 3A( the min. value) for your reference. I have checked the input/output parametre again and found that your max....
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Forum Post: LM5088 Overcurrent Protection Design problem
Hi, Here we are using LM5088 for AC24V ~ DC12V 5A application. I had finish my design and get my pcb worked, here is my design:but here i met 2 questions:1、If once the output of 12V is shorted, the...
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Forum Post: BQ24010 without battery
I am usingthe following scheme.the battery packhas protectionfromoverchargeandoverdischarge.in the case ofdischarge, protectiondisconnects thebattery. If Input voltage(5V) connect Vout from BK24010...
View ArticleForum Post: RE: bq27530
HiI installed the bq config on XP and it worked. the problem is that I dont know the chemistry of my battery.the bq config send me to another software that is called bqeasy but this software doesnt...
View ArticleForum Post: RE: Calibration Accuracy
Hi Alex,Fluke makes some pretty good multimeters.thanksOnyx
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Forum Post: RE: TPS70933 failure
No there is not any inductor, I have a PCB with only both regulators
View ArticleForum Post: RE: LM3502 open circuit protection
Thanks! It looks like the diode could be the issue...My diode is a Schottky and I assume that is my problem. Currently 30V, 05.A. I am changing to a 60V, 1A...I'll let you know if that solves it.
View ArticleForum Post: RE: LM2673S-5.0
Hello Carl,What is the load current that the LM2673 is providing? The caps would usually fail for any of these conditions:1) If there is over voltage across the capacitor.2) If the RMS current through...
View ArticleForum Post: RE: LM2611 issues at low load
Hi James,At very low load conditions, the LM2611 will be in pulse-skipping (hysteretic) mode since the energy stored in the Cuk capacitor is more than the energy required by the load. The Cfff will...
View ArticleForum Post: RE: BQ24618 system power switch from battery to adapter...
add diode, increase the value of Resistor and reduce the value of CAP, this solve the undershoot issue.thanks,
View ArticleForum Post: TPS61260 startup
Hello,I seem to have a unique problem with the TPS61260 part. My application requires running off a CR2032 primary coin cell (3V). I have a TP63030 buck-boost down regulating the battery voltage to...
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