Texas Instruments bq25910 | Demoboard bq25910EVM-854

Description

The 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

Charging in Dual Charger Configuration

• High Efficiency 750-kHz Switch Mode Three-LevelBuck Parallel Charger– Reduced Ripple to Support Low ProfileInductor– 95.4% Charge Efficiency at 1.5 A from 5-VInput– 93.3% Charge Efficiency at 3 A from 9-V Input– Superior Efficiency Compared to TraditionalBuck Converter in Compact Form Factor
• Single Input to Support USB Input and AdjustableHigh Voltage Adapters– Support 3.9-V to 14-V Input Voltage Rangewith 20-V Absolute Maximum Input VoltageRating– Input Current Limit (500 mA to 3.6 A with 100-mA resolution) to Support USB2.0 and USB3.0 Standard and High Voltage Adaptors– Maximum Power Tracking by Input VoltageLimit (VINDPM) up to 14 V
• Flexible I2C Mode for Optimal SystemPerformance
• High Integration Includes all MOSFETs, CurrentSensing and Loop Compensation– Lossless Charge Current Sensing withoutSense Resistor
• < 10-μA Low Battery Leakage Current DuringStand-By Mode
• High Accuracy– ±0.4% Charge Voltage Regulation– ±10% Charge Current Regulation– ±7.5% Input Current Regulation– Remote Differential Battery Sensing
• Safety– Thermal Regulation and Thermal Shutdown– Input UVLO and Overvoltage Protection– Battery OVP– Input Dynamic Power Management (DPM)– Charging Safety Timer– Flying Capacitor Short Circuit Protection– Output Voltage Short Circuit Protection
• Available in 36-Ball WCSP Package

Typical applications

• Portable Electronics / Smart Phone / Tablet / Electronic Point of Sales (ePOS)
• Wireless Charging

More information

• IC product information