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BQ51050B

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Qi (WPC) Compliant Highly integrated Secondary-Side Direct Lithium Ion charger.

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Data sheet

BQ51050B

ACTIVE
Data sheet Order now

Product details

Charge current (max) (A) 1.5 Vin (max) (V) 10 Cell chemistry Li-Ion/Li-Polymer Absolute max Vin (max) (V) 20 Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) 0 to 125
Charge current (max) (A) 1.5 Vin (max) (V) 10 Cell chemistry Li-Ion/Li-Polymer Absolute max Vin (max) (V) 20 Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) 0 to 125
DSBGA (YFP) 28 5.4 mm² 1.8 x 3 VQFN (RHL) 20 15.75 mm² 4.5 x 3.5
  • Single-Stage Wireless Power Receiver
    and Li-Ion/Li-Pol Battery Charger
    • Combines Wireless Power Receiver, Rectifier, and Battery Charger in a Single, Small Package
    • 4.20-V, 4.35-V, and 4.40-V Output Voltage Options
    • Supports a Charging Current up to 1.5 A
    • 93% Peak AC-DC Charging Efficiency
  • Robust Architecture
    • 20-V Maximum Input Voltage Tolerance,
      With Input Overvoltage Protection
    • Thermal Shutdown and Overcurrent Protection
    • Temperature Monitoring and Fault Detection
  • Compatible With WPC v1.2 Qi Industry Standard
  • Power Stage Output Tracks Rectifier and Battery Voltage to Ensure Maximum Efficiency Across the Full Charge Cycle
  • Available in Small DSGBA and VQFN Packages
  • Single-Stage Wireless Power Receiver
    and Li-Ion/Li-Pol Battery Charger
    • Combines Wireless Power Receiver, Rectifier, and Battery Charger in a Single, Small Package
    • 4.20-V, 4.35-V, and 4.40-V Output Voltage Options
    • Supports a Charging Current up to 1.5 A
    • 93% Peak AC-DC Charging Efficiency
  • Robust Architecture
    • 20-V Maximum Input Voltage Tolerance,
      With Input Overvoltage Protection
    • Thermal Shutdown and Overcurrent Protection
    • Temperature Monitoring and Fault Detection
  • Compatible With WPC v1.2 Qi Industry Standard
  • Power Stage Output Tracks Rectifier and Battery Voltage to Ensure Maximum Efficiency Across the Full Charge Cycle
  • Available in Small DSGBA and VQFN Packages

The bq5105x device is a high-efficiency, Qi-compliant wireless power receiver with an integrated Li-Ion/Li-Pol battery charge controller for portable applications. The bq5105xB devices provide efficient AC-DC power conversion, integrates the digital controller required to comply with Qi v1.2 communication protocol, and provides all necessary control algorithms needed for efficient and safe Li-Ion and Li-Pol battery charging. Together with the bq500212A transmitter-side controller, the bq5105x enables a complete wireless power transfer system for direct battery charger solutions. By using near-field inductive power transfer, the receiver coil embedded in the portable device can pick up the power transmitted by transmitter coil. The AC signal from the receiver coil is then rectified and conditioned to apply power directly to the battery.  Global feedback is established from the receiver to the transmitter to stabilize the power transfer process.  This feedback is established by using the Qi v1.2 communication protocol.

The bq5105xB devices integrate a low-impedance synchronous rectifier, low-dropout regulator (LDO), digital control, charger controller, and accurate voltage and current loops in a single package.  The entire power stage (rectifier and LDO) use low-resistance N-MOSFETs (100-mΩ typical Rdson) to ensure high efficiency and low power dissipation.

The bq5105x device is a high-efficiency, Qi-compliant wireless power receiver with an integrated Li-Ion/Li-Pol battery charge controller for portable applications. The bq5105xB devices provide efficient AC-DC power conversion, integrates the digital controller required to comply with Qi v1.2 communication protocol, and provides all necessary control algorithms needed for efficient and safe Li-Ion and Li-Pol battery charging. Together with the bq500212A transmitter-side controller, the bq5105x enables a complete wireless power transfer system for direct battery charger solutions. By using near-field inductive power transfer, the receiver coil embedded in the portable device can pick up the power transmitted by transmitter coil. The AC signal from the receiver coil is then rectified and conditioned to apply power directly to the battery.  Global feedback is established from the receiver to the transmitter to stabilize the power transfer process.  This feedback is established by using the Qi v1.2 communication protocol.

The bq5105xB devices integrate a low-impedance synchronous rectifier, low-dropout regulator (LDO), digital control, charger controller, and accurate voltage and current loops in a single package.  The entire power stage (rectifier and LDO) use low-resistance N-MOSFETs (100-mΩ typical Rdson) to ensure high efficiency and low power dissipation.
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Type Title Date
* Data sheet bq5105xB High-Efficiency Qi v1.2-Compliant Wireless Power Receiver and Battery Charger datasheet (Rev. F) PDF | HTML 28 Jun 2017
Product overview Battery Management Solutions for Wearable and Fitness Devices (Rev. C) 18 Aug 2014
Application note Test and Troubleshoot a Wireless Power Receiver 06 Aug 2014
User guide bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver (Rev. C) 05 Jun 2013
Product overview Power Bank Charger ICs 25 Feb 2013

Design & development

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Calculation tool

SLUC577 — Foreign Object Detection (FOD) Calibration/Tuning Tool

Supported products & hardware

Supported products & hardware

Products
Battery charger ICs
BQ51003 — BQ51003 Wireless power Receiver BQ51010B — Highly integrated Wireless Receiver Qi (WPC V1.1) Compliant power Supply BQ51013B — WPC 1.1 Compatible Fully integrated Wireless power Receiver IC BQ51020 — 5-W (WPC) single-Chip Wireless power Receiver BQ51021 — 5-W (WPC) single-Chip Wireless power Receiver with I2C BQ51025 — bq51025 10-W WPC Compliant Single Chip Wireless Power Receiver BQ51050B — Qi (WPC) Compliant Highly integrated Secondary-Side Direct Lithium Ion charger. BQ51051B — integrated Wireless power Li-ion charger Receiver, Qi (WPC) Compliant BQ51052B — BQ51052B integrated Wireless power Li-ion charger Receiver, Qi (WPC) Compliant BQ51221 — Dual mode 5-W (WPC and PMA) single Chip Wireless power Receiver BQ51222 — Dual mode 5-W (WPC v1.2 and PMA) single Chip Wireless power Receiver
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Calculation tool

SLUC629 — BQ5105XB NTC Calculator Tool

Supported products & hardware

Supported products & hardware

Products
Battery charger ICs
BQ51050B — Qi (WPC) Compliant Highly integrated Secondary-Side Direct Lithium Ion charger. BQ51051B — integrated Wireless power Li-ion charger Receiver, Qi (WPC) Compliant BQ51052B — BQ51052B integrated Wireless power Li-ion charger Receiver, Qi (WPC) Compliant
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Reference designs

TIDA-00669 — 500mA Wireless Charger BoosterPack with Gauge Reference Design

The TIDA-00669 is a BoosterPack™ reference design that provides a wireless charger and battery management to power any TI LaunchPad™ (www.ti.com/launchpad). This is a highly-integrated power management reference design that is well-suited for low-power applications. The primary method of storage is (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
DSBGA (YFP) 28 Ultra Librarian
VQFN (RHL) 20 Ultra Librarian
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