BQ500211A Datasheet, PDF (1/27 Pages) Texas Instruments – 5-V, WPC1.1 Compliant Wireless Power Transmitter Manager

bq500211A
www.ti.com
SLUSBB1 – DECEMBER 2012
5-V, WPC1.1 Compliant Wireless Power Transmitter Manager
Check for Samples: bq500211A
FEATURES
1
•2 Intelligent Control of Wireless Power Transfer
• 5-V Operation Conforms to Wireless Power
Consortium (WPC) Type A5 and Type A11
Transmitter Specifications
• WPC1.1 Compliant, Including Foreign Object
Detection (FOD)
• Enhanced Parasitic Metal Detection (PMOD)
Assures Safety
• Dynamic Power Limiting™ for USB and
Limited Source Operation
• Digital Demodulation Reduces Components
• LED Indication of Charging State and Fault
Status
APPLICATIONS
• WPC 1.1 Compliant Wireless Chargers For:
– Qi-Certified Smart Phones and other
Handhelds
– Hermetically Sealed Devices and Tools
– Cars and Other Vehicles
– Tabletop Charge Surfaces
• See www.ti.com/wirelesspower for More
Information on TI's Wireless Charging
Solutions
DESCRIPTION
The bq500211A is a second generation digital
wireless power controller that integrates all functions
required to control wireless power transfer to a single
WPC compliant receiver. It is WPC1.1 compliant and
designed for 5-V systems as either a WPC type A5
transmitter with a magnetic positioning guide or as a
WPC type A11 transmitter without the magnetic
guide. The bq500211A pings the surrounding
environment for WPC compliant devices to be
powered, safely engages the device, receives packet
communication from the powered device and
manages the power transfer. To maximize flexibility in
wireless power applications, Dynamic Power
Limiting™ (DPL) is featured on the bq500211A. DPL
enhances user experience by seamlessly optimizing
the usage of power available from limited input
supplies. The bq500211A supports both Foreign
Object Detection (FOD) and Parasitic Metal Object
Detection (PMOD) by continuously monitoring the
efficiency of the established power transfer,
protecting from power lost due to metal objects
misplaced in the wireless power transfer bath. Should
any abnormal condition develop during power
transfer, the bq500211A handles it and provides
indicator outputs. Comprehensive status and fault
monitoring features enable a robust system design.
The bq500211A is available in a 48-pin, 7 mm x 7
mm QFN package and operates over a temperature
range from –40°C to 110°C.
Functional Diagram and Efficiency Versus System Output Power
80
Transmitter
Receiver
Power
70
AC -DC
Power
Stage
Rectification
Voltage
Conditioning
Load
60
50
Communication
BQ500211 A
40
Feedback
Controller
bq51013
30
20
10
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Output Power (W)
G000
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.
Dynamic Power Limiting is a trademark of Texas Instruments.
2
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 © 2012, Texas Instruments Incorporated