Part Number: BQ77905 Tool/software: Dear TI support,
I am looking into the Shutdown feature on the bq77905.
Looking at the TI slua826 document, Figure 4 shows a method for switching into Shutdown and then enabling the pack again by connecting ENABLE…
Hello Goutam,
Like I said, you could use the BQ76942:
Luis H. S. said: BQ76942, which is a 3s to 10s monitor/protector. This device can be OTP programmed with your custom settings and be used standalone.
This can be OTP'd (One Time Programmed) with your…
Hi Alexis, Yes R18, R19, R20 & R21 are used to simulate the cells, why would this cause issues with cell measurements? In the BQ77905 EVM 200 ohm resistors are used to simulate cells. I had increased the resistance to reduce the current draw on the battery…
Part Number: BQ77905
Tool/software:
Hi,
How is Over-temperature sensing working in this IC. I thought it would have been a simple voltage divider with supply voltage at VTB and sensing at TS. But it doesn't seems like it is working like this.
I…
Part Number: BQ77905 Other Parts Discussed in Thread: BQ25792 , BQ76905 , BQ77307 , BQ77915 Tool/software: Hi team,
I have a customer that's wanting to look into a couple recommendations for a battery protection IC / Cell balancer that's been tested with…
Part Number: BQ77905 Tool/software: Hi All, Our customer uses BQ7790502 to protect Li battery, and it can protect battery when SCD, OCD, OTD, OTC, OV or UV occur. The problem is that when fault occurs and the battery is protected, the fault does not recovers…
Part Number: BQ77905 Other Parts Discussed in Thread: BQ7718 Tool/software: Hi,
I am planning to use BQ7790518 battery protector for 8 and 6 Cells. The following specs are required:
1. The cell level overvoltage cutoff at 4.3V.
2. The temperature cut…
Part Number: BQ77905 Tool/software: Hi,
I am planning to use BQ7790518 for charging OV protection of a 8S battery pack. I have tied the LD pin of the top device to the local AVSS (top device ground). This disables the LD pin of the top device. However…
Part Number: BQ77905 Hi Support team,
has anybody a simple excel table with temperature thresholds of BQ77905 to optimize temperature behavior? US customer of 500k BMS like to get a 75°C cut off with just 5°C hysterese for optimal operation, so different…
Part Number: BQ77905 Good Afternoon,
We are currently experiencing an issue with a new design utilizing a BQ7790509 and a BQ294700DSGR. Once assembled, we are able to discharge and charge the pack without issue. However, once the first protection has been…
