Dual Mode 5-W (WPC and PMA) Single Chip Wireless Power Receiver  - BQ51221

BQ51221 (ACTIVE)

Dual Mode 5-W (WPC and PMA) Single Chip Wireless Power Receiver

Recommended alternative parts

  • BQ51013B  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 
  • BQ51020  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 
  • BQ51021  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 

Description

The bq51221 device is a fully contained wireless power receiver capable of operating in both the WPC and PMA protocols which allows a wireless power system to work with both WPC and PMA inductive charging standards. The bq51221 device provides a single device power conversion (rectification and regulation) as well as the digital control and communication for both standards. It also has autonomous detection of protocol and requires no additional active devices. The bq51221 device complies with the WPC v1.1 and PMA communication protocol. Together with the WPC or a PMA primary-side controller, the bq51221 device enables a complete wireless power transfer system for a wireless power supply solution. The receiver allows for synchronous rectification, regulation and control and communication to all exist in a market-leading form factor, efficiency, and solution size.

Features

  • Robust 5-W Solution With 50% Lower Losses
    for Improved Thermals
    • Inductorless Receiver for Lowest Height
      Profile Solution
    • Adjustable Output Voltage (4.5 to 8 V) for
      Coil and Thermal Optimization
    • Fully Synchronous Rectifier With 96%
      Efficiency
    • 97% Efficient Post Regulator
    • 79% System Efficiency at 5 W
  • WPC v1.1 and PMA Compliant Communication
  • Patented Transmitter Pad Detect Function
    Improves User Experience
  • I2C Communication with Host

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Parametrics Compare all products in Wireless Power Solutions

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

Companion parts

Part # Name Product Family Comments
BQ500212A   Qi Compliant 5V Wireless Power Transmitter Manager   BATTERY MANAGEMENT PRODUCTS - Wireless Power Solutions    
BQ500412   Free Positioning, Qi-Compliant Wireless Power Transmitter Manager   BATTERY MANAGEMENT PRODUCTS - Wireless Power Solutions    
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