Panasonic NN32251A User Manual

INTEGRATED WIRELESS POWER SUPPLY TRANSMITTER,
Qi (WIRELESS POWER CONSORTIUM) COMPLIANT
- Evaluation Board User's Guide (A11 type) -
FEATURES
 Integrated wireless power transmitter controller
 WPC Ver. 1.1 ready
 MCU embedded
 Half-bridge gate driver ： 4ch
(full-bridge gate driver ： 2ch also configurable)
 Single-coil (Type A11) supported
 Expanded free positioning using multi-coils up to 4 coils
(Type A6)
 Highly accurate voltage and current monitor for inverters
 Output controlled by frequency or duty, defined in Qi.
ASK demodulation for both current and voltage signals
(Qi compliant)
 Input voltage range : VADP, VINV : 4.6 to 19.5V
 Supports Under Voltage Lockout , Thermal Shutdown,
Over Current Detection
 Short-circuit protection at inverter output
 Temperature Detecting Circuit ： 3ch
 LED indicator ： 2ch
 package ： 64 pins HQFP
(size : 12mm  12mm)
Wireless Power System
VIN
NN32251A
Transmitter (Tx)
Wireless Power
Cp Cs
Cd
TX
RX
Coil
Coil
Communication
http://www.semicon.panasonic.co.jp/en/
DESCRIPTION
NN32251A is a wireless power system controller IC
which is compliant with Qi version 1.1 of the System
Description Wireless Power Transfer, Volume 1 for Low
Power, defined by Wireless Power Consortium.
NN32251A is a controller IC of a power transmitter (Tx)
which can supply power to any Qi-compliant wireless
chargers.
APPLICATIONS
・WPC-compliant wireless charger
IMPORTANT
NN32251A is designed to be used based on
the circuits and external components described
in this document .
Therefore, Panasonic cannot support any inquiries of
modified solution.
OUT
VRECT
AN32258A
Control
IC
Receiver (Rx)
Evaluation Board User's Guide
NN32251A
IOUT
Charger
Co
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