BQ500511A Datasheet, PDF (1/7 Pages) Texas Instruments – Low Cost 5-V Wireless Power Transmitter Controller

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
bq500511A
SLUSCN3 – JULY 2016
bq500511A Low Cost 5-V Wireless Power Transmitter Controller
for WPC v1.2 A11 Transmitters
1 Features
•1 Digital Controller Compatible With Wireless Power
Consortium (WPC) v1.2 A11 Specification
• Improved demodulation algorithms provide robust
communication in noisy environments
• Designed to be Used With bq50002 Analog Front
End
• Suitable for WPC and Proprietary 5-V Wireless
Power Transmitters
• Supports Received Power up to 5 W
• Two Chip Solution Enables High Efficiency
Transmitter Designs of >75%
• Ultra Low Standby Power, Even During Digital
Ping (<30 mW)
• Dynamic Power Limiting (DPL)™ Enables
Operation From Inputs Sources With Limited
Power
• System LED Indication of Charging State and
Fault Status
• Accurate Foreign Object Detection Method (FOD)
Prevents Heating of Objects Between Transmitter
and Receiver Coils
2 Applications
• WPC Compliant Wireless Chargers for Smart
Phones and Wearable Applications
• Proprietary Wireless Chargers
• Medical and Industrial Applications
• Car and Other Vehicle Accessories
• See www.ti.com/wirelesspower for More
Information on TI’s Wireless Power Solutions
5-V
Input
Simplified Schematic
TRANSMITTER
bq50002
3V
PWM
Control
feedback
bq500511
Power
RECEIVER
Rectification
Voltage
Conditioning
Load
Communication
bq51k
Controller
Copyright © 2016, Texas Instruments Incorporated
1
3 Description
The bq500511A is a wireless power transmitter
controller that, when combined with the bq50002
analog front end device, integrates all functions
required to create a Qi-compliant or proprietary 5-V
transmitter. The bq500511A and bq50002 together
provide a compact wireless charger solution. The
bq500511A pings the surrounding environment for
the receiver devices to be powered, safely engages
the device, receives packet communication from the
powered device and manages the power transfer
according to Wireless Power Consortium (WPC) v1.2
specification.
To maximize flexibility in wireless power control
applications, Dynamic Power Limiting™ (DPL) is
featured on the bq500511A. DPL enhances user
experience by seamlessly optimizing the usage of
power available from limited input supplies.
The system supports Foreign Object Detection (FOD)
by continuously monitoring the efficiency of the
established power transfer, protecting from power lost
due to metal objects misplaced in the wireless power
transfer field. Should any abnormal condition develop
during power transfer, the bq500511A handles the
condition and provides indication outputs.
Comprehensive status and fault monitoring features
enable a low cost yet robust Qi-certified wireless
power system design.
The bq500511A is available in a thermally enhanced
6 mm x 6 mm, 40-pin VQFN package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq500511A
VQFN (40)
6.00 mm x 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
Power (W)
D001
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. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.