Texas Instruments bq500100 Wireless Charging Current Monitor
Texas Instruments bq500100 Wireless Charging Current Monitor is a voltage output, current-shunt monitor for wireless charging to facilitate foreign object detection (FOD). This device can sense drops across shunts at common-mode voltages from 0V to 20V, independent of the supply voltage. The device features a fixed voltage gain of 50V/V with a maximum gain error of 2% and an offset voltage of 150µV (max.). This device operates from a single 2.7V to 6V power supply, drawing a maximum of 100µA of supply current. The Texas Instruments bq500100 is specified from –40°C to +105°C and is offered in the SC-70 package.
Features
- 0V to 20V wide common-mode range
- ±150µV (max.) offset voltage
- Enables shunt drops of 10mV full-scale
- ±2% gain error (max. overtemperature) accuracy
- 50V/V fixed gain
- 100µA (max.) low quiescent current
- SC70 small package
Applications
- WPC (Qi) 1.2-compliant wireless power transmitters for 15W or 5W systems
- Proprietary wireless chargers and transmitters
- Wirelessly-powered industrial and medical systems
Functional Block Diagram
發佈日期: 2016-06-13
| 更新日期: 2022-03-11