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Package | Pins | Size

DSBGA (YFP) 28 0 mm² 1.922 x 3.046 open-in-new Find other Battery charger ICs

Features

  • Integrated Wireless Power Supply Receiver Solution - Optimized for 2.5-W Applications
    • 93% Overall Peak AC-DC Efficiency
    • Full Synchronous Rectifier
    • WPC v1.2 Compliant Communication Control
    • Output Voltage Conditioning
    • Only IC Required Between Rx coil and Output
  • Wireless Power Consortium (WPC) v1.2 Compliant (FOD Enabled) Highly Accurate Current Sense
  • Dynamic Rectifier Control for Improved Load Transient Response
  • Dynamic Efficiency Scaling for Optimized Performance Over Wide Range of Output Power
  • Adaptive Communication Limit for Robust Communication
  • Supports 20-V Maximum Input
  • Low-power Dissipative Rectifier Overvoltage Clamp (VRECT-OVP = 15 V)
  • Thermal Shutdown
  • Multifunction NTC and Control Pin for Temperature Monitoring, Charge Complete and Fault Host Control

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Description

The bq51003 is an advanced, integrated, receiver IC for wireless power transfer in portable applications optimized for 2.5-W and below applications. The device provides the AC-DC power conversion while integrating the digital control required to comply with the Qi v1.2 communication protocol. Together with the bq500212A transmitter controller, the bq51003 enables a complete contact-less power transfer system for a wireless power supply solution. By using near-field inductive power transfer, the receiver coil embedded in the portable device receives the power transmitted by the transmitter coil through mutually coupled inductors. The AC signal from the receiver coil is then rectified and regulated to be used as a power supply for down-system electronics. Global feedback is established from the secondary to the transmitter to stabilize the power transfer process through back-scatter modulation. This feedback is established by using the Qi v1.2 communication protocol supporting up to 2.5-W applications.

The device integrates a low-impedance full synchronous rectifier, low-dropout regulator, digital control, and accurate voltage and current loops.

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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

CALCULATION TOOLS Download
SLUC577A.ZIP (60490 KB)

Reference designs

REFERENCE DESIGNS Download
Power Reference Design for a Wearable Device with Wireless Charging using the bq51003 and bq25120
PMP11311 Wearable devices require advanced power management to achieve long battery run times with always-on functionality.  Additionally, the devices need to use small rechargeable batteries and enable small footprint designs.  This application note shows the implementation of a scalable power (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
50mA Wireless Charger with 19mm Coil BoosterPack Reference Design
TIDA-00881 The TIDA-00881 reference design is a booster pack that provides a wireless charger and an entire battery managment solution to power any low power TI Launchpad. This design is a  highly integrated power management solution that is well-suited for ultra-low power applications using an off the (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Smartwatch Battery Management Solution Reference Design
TIDA-00712 The TI design TIDA-00712 is a reference design for Smartwatch BMS (Battery Management Solution); It’s suitable for low power wearable devices like smartwatch applications. The design includes an ultra-low current 1 cell Li-ion linear charger; a highly integrated Qi-compliant wireless power (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
50mA Wireless Charger Booster Pack Reference Design
TIDA-00668 The TIDA-00668 is a booster pack that provides a wireless charger and an entire battery managment solution to power any low power TI Launchpad. This design is a highly integrated power management solution that is well-suited for ultra-low power applications.

The primary method of storage is an (...)

document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Qi (WPC) Compliant Wireless Charger for Low Power Wearable Applications
TIDA-00318 TI design TIDA-00318 is suitable for low power wearable device including a Qi compliant wireless receiver (bq51003)and ultra low current 1 cell Li-ion linear charger (bq25100). It features an ultra small size (5x15mm2), capable of low charging currents down to 10mA and up to 250mAwith support of (...)
document-generic Schematic document-generic User guide

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DSBGA (YFP) 28 View options

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