PAC5220WP A11 WPC
Transmitter
Power Application Controller
© 2014 Copyright, Active-Semi International, Inc. - 6 - Rev 1.7 May, 2014
No portion of this document may be reproduced or reused in any form without Active-
Semi’s prior written consent
Foreign Object Detection (FOD) support, to prevent receivers from heating up objects in the path of
energy transfer between the transmitter and receiver.
Current, Voltage and Temperature Sensing:
The PAC5220WP monitors coil current, input voltage and
temperature near the transmitter coil (sensed through NTC thermistor) using PAC5220WP
’s differential
PGAs and ADC for detecting under-voltage, over-temperature indicative of fault conditions to comply with
WPC specification.
Guided Placement:
Provides visual and audible feedback through a dual-color LED and piezoelectric
buzzer to indicate proper alignment between base station and mobile receiver coils, ongoing power
charging, receiver disconnect and fault conditions resulting in termination of power signal to the receiver.
Power Limiting
: For low-power chargers, the PAC5220WP will enter a low power mode to safely charge
the receiver, in power-restricted environments. This mode is indicated to the user via the LED.
