Other Parts Discussed in Thread: BQ40Z50-R2, BQ24123, BQ25703A, BQ25881, BQ24725A
Hi,
We are about to redesign a product using the BQ40z60 device.
Your Website shows now the following:
Special note
Consider BQ40Z50-R2: using a separate charger and a separate gauge like BQ40Z50-R2 might allow more flexibility, ease to design and access to newest firmware.
Apart of this note, the device doesn't show up either under chargers nor fuel gauges - except if searching directly for it.
Is this device not recommended for new designs?
Apart of this, I agree that this device is hard to use and requires lots of external components.
Perhaps there are other charger/gauge combinations which will result in more reliability, lower component count and less board space.
Would it be possible for you to recommend a charge/gauge combination according to my requirements below?
- 2 Li-Ion cells in series (8.4V) not removable. Charger, gauge, and Batteries soldered on PCB.
- Charging current max 600mA via Step-down DC/DC, FETs built-in.
- Automatic cell balancing with built-in FETs.
- Battery capacity max 2000mAh each cell.
- Supply voltage 12V.
- Charge if 12V is applied until Batteries are fully charged - no communication to start or configure charging.
- Discharge rate at up-to 10C or maximum 15A (constant power mode).
- Impedance Track Gauge with I2C or SMB. Prediction of absolute battery capacity and remaining run-time at a specific load would be good.
- Industrial application. It is far more important to provide battery power than to protect the battery. The only reason to turn the battery off should be short circuit or cell voltage < 3V.
- Or-ing of battery and external 12V Power could be done via dedicated Or-ing controllers and FETs. Must switch 15A. System Voltage is allowed to jump between battery voltage and 12V.
Thanks for your help!
Regards,
Fred
