BQ51013B Datasheet, PDF (1/40 Pages) Texas Instruments – Highly Integrated Wireless Receiver Qi (WPC V1.1) Compliant Power Supply

bq51013B
www.ti.com
SLUSB62 – MARCH 2013
Highly Integrated Wireless Receiver Qi (WPC V1.1) Compliant Power Supply
Check for Samples: bq51013B
FEATURES
1
• Integrated Wireless Power Supply Receiver
Solution
– 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
• 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
Communication
• Supports 20-V Maximum Input
• Low-power Dissipative Rectifier Overvoltage
Clamp (V_OVP = 15V)
• Thermal Shutdown
• Multifunction NTC and Control Pin for
Temperature Monitoring, Charge Complete and
Fault Host Control
• 1.9 x 3mm DSBGA or 4.5 x 3.5mm QFN
Package
APPLICATIONS
• WPC Compliant Receivers
• Cell Phones, Smart Phones
• Headsets
• Digital Cameras
• Portable Media Players
• Hand-held Devices
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.
AC to DC
Power
bq5101x
Drivers
Rectification
Voltage
Conditioning
Communication
Load
Controller
V/I
Sense
bq500210
Transmitter
Controller
Receiver
Figure 1. Wireless Power Consortium (WPC or Qi) Inductive Power System
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated