WPC 1.1 Compatible Fully Integrated Wireless Power Receiver IC - BQ51013B


WPC 1.1 Compatible Fully Integrated Wireless Power Receiver IC


The bq51013B device is a single-chip, advanced, flexible, secondary-side device for wireless power transfer in portable applications capable of providing up to 5 W. The bq51013B devices provide the receiver (RX) AC-to-DC power conversion and regulation while integrating the digital control required to comply with the Wireless Power Consortium (WPC) Qi v1.1 communication protocol. Together with the bq50012A primary-side controller (or other Qi transmitter), the bq51013B enables a complete contactless power transfer system for a wireless power supply solution. Global feedback is established from the secondary to the primary to control the power transfer process using the Qi v1.1 protocol.

The bq51013B integrates a low-resistance synchronous rectifier, low-dropout regulator (LDO), digital control, and accurate voltage and current loops to ensure high efficiency and low power dissipation.

The bq51013B also includes a digital controller that calculates the amount of power received by the mobile device within the limits set by the WPC v1.1 standard. The controller then communicates this information to the transmitter (TX) to allow the TX to determine if a foreign object is present within the magnetic interface and introduces a higher level of safety within magnetic field. This Foreign Object Detection (FOD) method is part of the requirements under the WPC v1.1 specification.


  • Integrated Wireless Power Supply Receiver
    • 93% Overall Peak AC-DC Efficiency
    • Full Synchronous Rectifier
    • WPC v1.1 Compliant Communication Control
    • Output Voltage Conditioning
    • Only IC Required Between Rx Coil and Output
  • Wireless Power Consortium (WPC) v1.1
    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
  • Supports 20-V Maximum Input
  • Low-Power Dissipative Rectifier Overvoltage
    Clamp (VOVP = 15 V)
  • Thermal Shutdown
  • Multifunction NTC and Control Pin for
    Temperature Monitoring, Charge Complete, and
    Fault Host Control

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Parametrics Compare all products in Wireless Power Solutions

Pout (Typ) (W)
Vin (Max) (V)
Vrect (reg) (V)
Iout (Max) (A)
Vout (regulated) (V)
Operating Temperature Range (C)
Approx. Price (US$)
BQ51013B BQ51003 BQ51010B BQ51020 BQ51021 BQ51025 BQ51050B BQ51221
Receiver     Receiver     Receiver     Receiver     Receiver     Receiver     Receiver     Receiver    
5     2.5     5     5     5     10     5     5    
            Qi-Compliant Wireless Power Reciever      
20     20     20     20     20     20     20     20    
Dynamic     Dynamic     Dynamic     Dynamic     Dynamic     Dynamic     Tracks (Vbat+300mV)     Dynamic    
1.5     0.5     1.5     1.5     1.5     2     1.5     2    
5     5     7     8     8     10     4.2     5    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
  -40 to 85     -40 to 85     -40 to 125     -40 to 125     -40 to 125       -40 to 85    
28DSBGA     28DSBGA     42DSBGA     42DSBGA     42DSBGA     20VQFN
1.75 | 1ku     1.30 | 1ku     1.80 | 1ku     2.50 | 1ku     2.50 | 1ku     4.00 | 1ku     1.90 | 1ku     3.00 | 1ku    
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