BQ51013B_15 Datasheet, PDF (1/47 Pages) Texas Instruments – Highly Integrated Wireless Receiver Qi Compliant Power Supply

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bq51013B
SLUSB62B – MARCH 2013 – REVISED AUGUST 2015
bq51013B Highly Integrated Wireless Receiver Qi (WPC v1.1) Compliant Power Supply
1 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
• 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
Communication
• Supports 20-V Maximum Input
• Low-Power Dissipative Rectifier Overvoltage
Clamp (V_OVP = 15 V)
• Thermal Shutdown
• Multifunction NTC and Control Pin for
Temperature Monitoring, Charge Complete, and
Fault Host Control
2 Applications
• WPC v1.1 Compliant Receivers
• Cell Phones and Smart Phones
• Headsets
• Digital Cameras
• Portable Media Players
• Handheld Devices
Simplified Schematic
AD-EN
AD
CCOMM1
COMM1
CBOOT1
BOOT1
C1
AC1
OUT
RECT
COIL
C2
bq51013B
TS/CTRL
AC2
CBOOT2
CCOMM2
CCLAMP2
CCLAMP1
BOOT2
COMM2
CLAMP2
CLAMP1
ILIM
FOD
CHG
EN1
EN2
PGND
R1
RFOD
C4
ROS
C3
NTC
D1
R4
System
Load
HOST
Tri-State
Bi-State
Bi-State
3 Description
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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq51013B
VQFN (20)
DSBGA (28)
4.50 mm × 3.50 mm
3.00 mm × 1.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Wireless Power System Overview
AC to DC
Power
Drivers
bq51013B
Rectification
Voltage/
Current
Conditioning
Communication
System
Load
Controller
V/I
Sense
bq500212A
Transmitter
Controller
Battery
Charger
LI-Ion
Battery
Receiver
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.