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.…
Part Number: BQ77905 Hello Experts,
Posting on behalf of my customer:
I've made a prototype PCB with the BQ7790521 for a 4s LiFePO4 battery pack. But the protection features do not seem to work.
I've used a shunt resistance of 4mOhm so that the…
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…
Part Number: BQ77905 Other Parts Discussed in Thread: BQ76942 Tool/software:
Hi,
I am using BQ7790518 for Over charge cut-off protection for 8S pack. The schematic is attached below. There are two kinds of charger that we currently have. In one of…
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…
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 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…
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 Tool/software: Hello,
For my application, I am using a Lithium Primary Battery pack configured as 4S (3.9V D Cells), giving an OCV of 15.6V and a max discharge rate of 1A. I have four such battery packs diode-ORed together to achieve…
