BQ500414Q Datasheet, PDF (1/34 Pages) Texas Instruments – Qi Compliant Wireless Power Transmitter Manager

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bq500414Q
SLUSBE4B – JANUARY 2014 – REVISED JUNE 2014
bq500414Q Automotive, Free Positioning,
Qi Compliant Wireless Power Transmitter Manager
1 Features
•1 Expanded Free Positioning Using Three Coil
Transmit Array
• AEC-Q100 Qualified for Automotive Applications
• Conforms to Wireless Power Consortium (WPC)
A6 Transmitter Type Specification
• I²C Interface to Enable Control and
Communication With Host Controllers, that is
Read Tx and Rx Stats, Start Tx, and Shift Tx
Operating Frequency
• WPC v1.1 Compliant, Including Improved Foreign
Object Detection (FOD) Method
• Enhanced Parasitic Metal Object Detection
(PMOD) for WPC v1.0 Receivers Protection
• Digital Demodulation Reduces Components
• Over-Current Protection
• LED Indication of Charging State and Fault Status
2 Applications
• WPC 1.1 Wireless Chargers:
– In Cars and Other Vehicle Accessories
– Qi-Certified Smart Phones and Other
Handhelds
– Industrial and Medical Applications
• See www.ti.com/wirelesspower for More
Information on TI's Wireless Charging Solutions
3 Description
The bq500414Q is an AEC-Q100 qualified free-
positioning digital wireless power controller designed
for automotive applications. It integrates all functions
required to control wireless power transfer to a WPC
compliant receiver. It is WPC v1.1 ready and
designed for 12-V systems; however, the bq500414Q
is applicable to other supply voltages. The
bq500414Q pings the surrounding environment for
WPC compliant devices to be powered. Once a WPC
compliant device is detected, the bq500414Q reads
the packet feedback from the powered device and
manages the power transfer. A charging area of 70-
mm x 20-mm provides flexible receiver placement on
a transmitter pad. The bq500414Q supports both
Parasitic Metal Object Detection (PMOD) and Foreign
Object Detection (FOD) by continuously monitoring
the transmitted and received power of the system,
protecting the device from over heating. Should any
abnormal condition develop during power transfer,
the bq500414Q handles it and provides fault indicator
outputs. Comprehensive protection features provide a
robust design to protect the system in all receiver
placements.
The bq500414Q is available in an area saving 48-pin,
7-mm × 7-mm VQFN package and operates over a
temperature range from –40°C to 85°C.
Device Information⁽¹⁾
DEVICE NAME
PACKAGE
BODY SIZE
bq500414Q
VQFN (48)
7 mm × 7 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Diagram
6-16V
12V
SEPIC
3.3V
SW
I²C
CAN or LIN
Controller
BQ500414Q
Feedback
Multiplexer
ISense
HB
Power
Stage
HB
Power
Stage
HB
Power
Stage
Efficiency Versus System Output Power With A6 Tx Coil
80
No SEPIC Converter
70
60
50
With SEPIC Converter
40
30
20
10
0
0
Without SEPIC
With SEPIC
1
2
3
4
5
Output Power (W)
C002
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.