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Texas Instruments bq51013C/bq51013C-Q1 Wireless Qi Power Supplies

Texas Instruments bq51013C/bq51013C-Q1 Wireless Receiver Qi (WPC v2.0) Compliant Power Supplies are single-chip, advanced, flexible, secondary-side devices for wireless power transfer in portable applications delivering up to 5W. The bq51013C/bq51013C-Q1 offers the receiver (RX) AC-to-DC power conversion and regulation while integrating the digital control needed to comply with the Wireless Power Consortium (WPC) Qi v2.0 communication protocol. Combining the bq500212A primary-side controller (or other Qi transmitter) and the bq51013C/bq51013C-Q1 allows a complete contactless power transfer system for a wireless power supply solution. Global feedback is specified from the secondary to the primary to control the power transfer process utilizing the Qi v2.0 protocol.

The TI bq51013C/bq51013C-Q1 integrates a low-resistance synchronous rectifier, low-dropout regulator (LDO), digital control, and accurate voltage and current loops to guarantee high efficiency and low power dissipation.

The bq51013C-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • Qualified for automotive applications (bq51013C-Q1)
  • AEC-Q100 qualified with the following results - device temperature grade 1 of -40°C to +125°C ambient operating temperature
  • Integrated wireless power supply receiver solution
    • 93% overall peak AC-DC efficiency
    • Full synchronous rectifier
    • WPC v2.0 compliant communication control
    • Output voltage conditioning
    • Only IC is required between the Rx coil and the output
  • Dynamic rectifier control for improved load transient response
  • Wireless power consortium (WPC) v2.0 compliant (FOD enabled) highly accurate current sense
  • Dynamic efficiency scaling for optimized performance over a wide range of output power
  • Adaptive communication limit for robust communication
  • Supports 20V maximum input
  • Low-power dissipative rectifier overvoltage clamp (VOVP = 15V)
  • Thermal shutdown
  • Multifunction NTC and control pin for temperature monitoring, charge complete, and fault host control

Applications

  • WPC v2.0 compliant receivers
  • Passive entry passive start (PEPS)
  • Ultrasound smart probe
  • Cell phones and smartphones
  • Headsets
  • Handheld devices

Additional Resources

Wireless Power System Overview

Block Diagram - Texas Instruments bq51013C/bq51013C-Q1 Wireless Qi Power Supplies

Simplified Schematic

Schematic - Texas Instruments bq51013C/bq51013C-Q1 Wireless Qi Power Supplies

Additional Resources

Associated Evaluation Module

Texas Instruments bq51013C-Q1EVM Evaluation Module (EVM)

The module is a wireless power receiver based on the Qi standard from the Wireless Power Consortium.

Learn Moreabout Texas Instruments bq51013C-Q1EVM Evaluation Module (EVM) View Productsrelated to Texas Instruments bq51013C-Q1EVM Evaluation Module (EVM)
Published: 2024-10-29 | Updated: 2025-05-09