Forum Post: RE: LI-ION battery charger which can use low input voltage to...
More design information. We have a design goal for an internal li-ion 150mah battery which we intend to charge using an external li-ion battery of 1500mah. The internal battery is designed in so the...
View ArticleForum Post: RE: BQ33100 4 cell questions
Hi Jamal,1. I see you have external balancing resistors in parallel with your caps. In that case, there will be no need for the balancing fets and you will need to operate the device in stack mode of...
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Forum Post: RE: BQ24616 and BQ24133 - Datasheet parameters
Atul,There are more than one overvoltage parameter for these devices. If you are looking for the input (adapter) over voltage protection thresholds here is the information for both parts:bq24133...
View ArticleForum Post: BQ3060 battery manager uncommunicative state NACK
Hi all, serious problems here and would appreciate any help.We have the BQ3060 battery management IC product on a separate board built in to a pack of 4 LiPO cells.Having 2 issues:Failing to detect a...
View ArticleForum Post: SM72295
hii have a problem in current sense pin in my driver SM72295 in 48V 2kva inverter design. i using full bridge driver SM72295 i saw the some spiks across the current sense but i cant control the spics...
View ArticleForum Post: i need production circuit for my inverter
hi friends i developing LF inverter for1KVA/24V its working good but we need some production circuit i use full bridge driver SM72295 and H bridge . any body know give idea to what type of...
View ArticleForum Post: bq76PL536A Temperature Calculation
How would one convert the value from TS1 or TS2 to a temperature value? We are using the recommended thermistor (Panasonic ERT-J1VG103FA) with the recommended resistor values (Rt = 1.47 kohm and Rb =...
View ArticleForum Post: RE: Getting started with bq27541-G1
I think you are referring to the Typical Application circuit on the first page of the datasheet (showing a complete pack), where external FETs and an additional protector IC are shown? Because I cannot...
View ArticleForum Post: RE: BQ2002T VBat threshold question
Typically a NiMH just before termination has a voltage of ~1.53V.In order to get a good termination signal, the charger should remain in constant current mode until termination occurs.Thus I like to...
View ArticleForum Post: bq27531-G1 Signing Format
In what format is the bq27531-G1 Instantaneous Current register signed? It looks like two's complement - please confirm I've got a proper method of decoding.I first read two bytes then concatenate them...
View ArticleForum Post: RE: BQ34z110 optimization cycle Step 5 VOK always set
I think that you are fully charged now. Verify that OCVTAKEN is set and then discharge the pack again. Let it rest after discharge and Update Status should change to 06.When the batteries are...
View ArticleForum Post: BQ-27421-G1A configuration
I have been trying to change the parameter of bq-27421 to suit my device. In the tutorial, it only tell to change 4 parameters, which are battery capacity, battery energy, terminate voltage and taper...
View ArticleForum Post: RE: chem file in the bqwizard
I want update in the bq78pl116 for the ICR 18650-22P. I know, that the chemfile is 2002. Is it possible to copy this file into the subdirectory of the bqWizard and from where can I get it?Thanks Karl
View ArticleForum Post: RE: BQ2002T VBat threshold question
Now I'm charging at 1C in fast charging mode because I connected the TM pin to GND, but I'm still missing something. In the BQ2002T datasheet at page 4, when it is described the starting of charge...
View ArticleForum Post: RE: BQ34z110 optimization cycle Step 5 VOK always set
Jannik,Has the pack rested long enough for OCVTAKEN to set? Is VOK still set? If you discharge without the rest flags set properly, then a QMAX update will not occur. The device may still update the...
View ArticleForum Post: bq34z110 update status
Hi all,I've some questions regarding the optimization cycle in bq34z110. I'm using bq34z110 fuel gauge for 6V, 5Ah Lead acid battery.1. Is Cell BL Set Volt Threshold be changed during optimization...
View ArticleForum Post: RE: bq27531-G1 Signing Format
Thanks for the timely support, much appreciated.
View ArticleForum Post: USB to 2-Cell Li Poly Battery Application
I'm looking at the TI parametric search and I want to confirm that TI does not make a part with a USB (5V) input to charge a 2-cell (8.4V) Li Poly battery, essentially a boost charger.All of the...
View ArticleForum Post: TPS2500/1 Altium files
Is there Altium designer content available for the TPS2500/1 EVM
View ArticleForum Post: RE: Potting/Encapsulation of BQ25504
I suggest reading the layout guidelines at the end of the datasheet for the next gen IC, bq25505. It warns of solder residue causing parasitic resistors in the 1M range which is much lower than the...
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