NN32251A
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Evaluation Board User’s Guide
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)
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.
http://www.semicon.panasonic.co.jp/en/
FEATURES
DESCRIPTION
Wireless Power System
Cp
TX
Coil
Wireless Power
Communication
T
x
Inv
erter
VIN
Transmitter
(Tx)
NN32251A
Cd
AN32258A
IOUT
Control
Cs
IC
RX
Coil
Rec
ti
fi
er
VRECT
Charger
+
OUT
Receiver
(Rx)
Co
INTEGRATED WIRELESS POWER SUPPLY TRANSMITTER,
Qi (WIRELESS POWER CONSORTIUM) COMPLIANT
-
Evaluation Board User’s Guide (A11 type) -
・
WPC-compliant wireless charger
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.
APPLICATIONS
IMPORTANT
