bq25910 Three-Level Switch-Mode Single-Cell Charger
Texas Instruments' bq25910 is an I²C controlled 6 A three-level switch mode, single-cell parallel battery charger for fast charging
Texas Instruments' bq25910 is an integrated three-level switch-mode parallel battery charge management device for single cell Li-ion and Li-polymer batteries. Utilization of the three-level converter maintains highest switch-mode operation efficiency while reducing solution footprint and increasing power density. The device supports fast charging with high input voltage for a wide range of portable devices. The solution integrates reverse-blocking FET (QBLK), and four switching FETs (QHSA, QHSB, QLSB, QLSA). The I2C serial interface with charging and system settings makes the device a truly flexible solution.
| Features |
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- Parallel charger operation provides fast charging in dual charger configuration
- High efficiency 750 kHz switch mode three-level buck parallel charger
- Reduced ripple to support low profile inductor
- 95.4% charge efficiency at 1.5 A from 5 V input
- 93.3% charge efficiency at 3 A from 9 V input
- Superior efficiency compared to traditional buck converter in compact form factor
- High integration includes all MOSFETs, current sensing and loop compensation
- Lossless charge current sensing without sense resistor
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- Single input to support USB input and adjustable high voltage adapters
- Support 3.9 V to 14 V input voltage range with 20 V absolute maximum input voltage rating
- Input current limit (500 mA to 3.6 A with 100 mA resolution) to support USB 2.0 and USB 3.0 standard and high voltage adapters
- Maximum power tracking by input voltage limit (VINDPM) up to 14 V
- Flexible I2C mode for optimal system performance
- <10 µA low battery leakage current during standby mode
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| Applications |
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- Smartphones
- Tablets
- Wireless charging
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- Portable electronics
- Electronic point of sales (ePOS)
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