HI Corbin,
I assume there is no battery or battery simulator attached at BAT? If not, with charge enabled (via CE pin or bit) and no fault from TS due to missing thermistor, the BQ25792 sees a BATOVP fault due to overcharging of the default capacitors…
Part Number: BQ24650 I was designing a charge controller for the lead-acid battery using BQ24650. As the ambient (atmospheric) temperature here is around 25 to 30 Deg Celsius we want to use the IC without using the thermistor as mentioned in slva437a.
1…
Ethan,
A few updates here. We built out another board, and scoping BATDRIV to ground as suggested (instead of referenced to BATSRC with the single ended probe) did show a spike over at least 85V on BATDRV. I attempted to get a better capture of this but…
Hi Rannie,
Rannie Zhou said: When using BQ76952 to read the cell temperature through TS1/2/3/4/5/6, the temperature will jump from 30 to 168, which is abnormal as the temperature should be a parameter change continuously. Could you please help to check…
Part Number: BQ76942 Tool/software: Hi, our design uses the BQ76942 to manage a 7S LiFePO battery pack.
The BQ76942 is on the product's PCB, while the battery pack (simply bare cells and a thermistor) can be removed and replaced. It is connected to the…
Hi Srini,
Please see my comments below regarding BQ24193 part of the design. Once our discussions on BQ24193 are complete I can transfer the thread to the DRV8210P expert to review. If you wish for faster review of DRV8210P portion of design please create…
Part Number: BQ76952 Tool/software: Working with the BQ76952, I know that the TS2 Pin can be used either as a Wakeup pin or as a Thermistor ADC. I want to implement both at the same time to enable the SHUTDOWN mode which can then be waken-up through…
Hi Nate,
Nate Martin said: My understanding is this would be an over temperature permanent failure (reset on POR of the cells), and that it should be placed as close to the switching fets as possible. Given this, what considerations should go into choosing…
Part Number: BQ25306 Tool/software: Hi,
I am using the BQ25306 IC to charge a 10,000mAh lithium polymer battery, and I need to set it up to charge at 3A. Based on the datasheet,
I understand the charge current ratio KICHGK_{ICHG} K I C H G and the relationship…
Hello,
I would recommend placing a resistor in series and parallel to modify the threshold of your 10k thermistor going to 4k at 45C such that the TS voltage is below VTS-60°C at that time. This will require some theoretical iteration to meet your desired…
