AC to DC
Voltage
Conditioning
Controller
RectificationDrivers Load
Controller
V/I
Sense
Power
Transmitter Receiver
bq5101x
bq500210
Communication
bq51013A
bq51014
www.ti.com
SLUSAY6A –MARCH 2012–REVISED JUNE 2012
INTEGRATED WIRELESS POWER SUPPLY RECEIVER,
Qi (WIRELESS POWER CONSORTIUM) COMPLIANT
Check for Samples: bq51013A, bq51014
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FEATURES
• Integrated Wireless Power Receiver Solution DESCRIPTION
with a 5V Regulated Supply
The bq5101x is an advanced, integrated, receiver IC
for wireless power transfer in portable applications.
– 93% Overall Peak AC-DC Efficiency
The device provides the AC/DC power conversion
– Full Synchronous Rectifier
while integrating the digital control required to comply
– WPC v1.0 Compliant Communication
with the Qi v1.0 communication protocol. Together
Control
with the bq500210 transmitter controller, the bq5101x
enables a complete contact-less power transfer
– Output Voltage Conditioning
system for a wireless power supply solution. By using
– Only IC Required Between RX coil and 5V
near-field inductive power transfer, the receiver coil
DC Output Voltage
embedded in the portable device receives the power
• Dynamic Rectifier Control for Improved Load
transmitted by the transmitter coil via mutually
Transient Response coupled inductors. The AC signal from the receiver
coil is then rectified and regulated to be used as a
• Dynamic Efficiency Scaling for Optimized
power supply for down-system electronics. Global
Performance Over any Range of Output Power
feedback is established from the secondary to the
• Adaptive Communication Limit for Robust
transmitter in order to stabilize the power transfer
Communication During High Levels of Load
process via back-scatter modulation. This feedback is
Current Noise
established by using the Qi v1.0 communication
protocol supporting up to 5 W applications.
• Supports 20-V Maximum Input
• Low-power Dissipative Rectifier Overvoltage
The device integrates a low-impedance full
synchronous rectifier, low-dropout regulator, digital
Clamp (V
OVP
= 15V)
control, and accurate voltage and current loops. The
• Thermal Shutdown
entire power stage (rectifier and LDO) use low
• Multifunction NTC and Control Pin for
resistive NMOS FET’s to ensures high efficiency and
Temperature Monitoring, Done Charging and
low power dissipation.
Fault Host Control
• Stand-alone Digital Controller
• Programmable Termination Pin for Charge
Status 100% (CS100) Support
• 1.9 x 3mm DSBG or 4.5 x 3.5mm QFN Package
APPLICATIONS
• WPC Compliant Receivers
• Cell Phones, Smart Phones
• Headsets
Figure 1. Wireless Power Consortium
• Digital Cameras
(WPC or Qi) Inductive Power System
• Portable Media Players
• Hand-held Devices
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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.
Copyright © 2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.