bq51013B
www.ti.com
SLUSB62 –MARCH 2013
Highly Integrated Wireless Receiver Qi (WPC V1.1) Compliant Power Supply
Check for Samples: bq51013B
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FEATURES
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Supports 20-V Maximum Input
Low-power Dissipative Rectifier Overvoltage
Clamp (VOVP = 15V)
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Integrated Wireless Power Supply Receiver
Solution
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Thermal Shutdown
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93% Overall Peak AC-DC Efficiency
Full Synchronous Rectifier
Multifunction NTC and Control Pin for
Temperature Monitoring, Charge Complete and
Fault Host Control
WPC v1.1 Compliant Communication
Control
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1.9 x 3mm DSBGA or 4.5 x 3.5mm QFN
Package
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Output Voltage Conditioning
Only IC Required Between RX coil and
Output
APPLICATIONS
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WPC v1.1 Compliant (FOD Enabled) Highly
Accurate Current Sense
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WPC Compliant Receivers
Cell Phones, Smart Phones
Headsets
Dynamic Rectifier Control for Improved Load
Transient Response
Digital Cameras
Dynamic Efficiency Scaling for Optimized
Performance Over wide Range of Output
Power
Portable Media Players
Hand-held Devices
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Adaptive Communication Limit for Robust
Communication
DESCRIPTION
The bq5101xB is a family of advanced, flexible, secondary-side devices for wireless power transfer in portable
applications. The bq5101xB devices provide the AC/DC power conversion and regulation while integrating the
digital control required to comply with the Qi v1.1 communication protocol. Together with the bq50xxx primary-
side controller, the bq5101xB enables a complete contact-less power transfer system for a wireless power supply
solution. Global feedback is established from the secondary to the primary in order to control the power transfer
process utilizing the Qi v1.1 protocol.
The bq5101xB devices integrate a low resistance synchronous rectifier, low-dropout regulator, digital control, and
accurate voltage and current loops to ensure high efficiency and low power dissipation.
The bq5101xB also includes a digital controller that can calculate the amount of power received by the mobile
device within the limits set by the WPC v1.1 standard. The controller will then communicate this information to
the transmitter in order to allow the transmitter 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 new requirements under the WPC v1.1 specification.
Power
bq5101x
Voltage
Conditioning
AC to DC
Drivers
Rectification
Load
Communication
Controller
V/I
Sense
Controller
bq500210
Transmitter
Receiver
Figure 1. Wireless Power Consortium (WPC or Qi) Inductive Power System
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
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Copyright © 2013, Texas Instruments Incorporated