P9030-0NTGI8 Datasheet, PDF (1/28 Pages) Integrated Device Technology – Single Chip Wireless Power Transmitter IC for TX-A1

Product Datasheet
Single Chip Wireless
Power Transmitter IC for TX-A1
IDTP9030
Features
 Single-Chip 5W Solution for Wireless Power
Consortium (WPC)-compliant power transmitter
design A1
 Conforms to WPC specification version 1.1
specifications
 19±1V Operating Input Voltage
 Integrated Half-Bridge Inverter
 Closed-Loop Power Transfer Control between Base
Station and Mobile Device
 Demodulates and Decodes WPC-Compliant
Message Packets
 5V Regulated DC/DC Converter
 Integrated RESET Function
 Proprietary Back –Channel Communication
 I²C Interface
 Open-Drain LED Indicator Outputs
 Over-Temperature/Voltage/Current Protection
 Security and encryption up to 64 bits
 Foreign Object Detection (FOD) for safety
Applications
 WPC-Compliant Wireless Charging Base Stations
Description
The IDTP9030 is a highly-integrated single-chip WPC-compliant
wireless power transmitter IC for power transmitter design A1. The
device operates with a 19V (±1V) adapter, and supplies an integrated
half-bridge inverter for DC/AC conversion. It controls the transferred
power by modulating the switching frequency of the half-bridge inverter
from 110kHz to 205kHz at a fixed 50% duty cycle specified by the WPC
specification for an “A1” transmitter. It contains logic circuits required to
demodulate and decode WPC-compliant message packets sent by the
mobile device to adjust the transferred power.
The IDTP9030 is an intelligent device that periodically pings the area
surrounding the base station to detect a mobile device for charging
while minimizing idle power. Once the mobile device is detected and
authenticated, the IDTP9030 continuously monitors all communications
from the mobile device, and adjusts the transmitted power accordingly
by varying the switching frequency of the half-bridge inverter.
The IDTP9030 features a proprietary back-channel communication
mode which enables the device to communicate to IDT’s wireless
power receiver solutions (e.g. IDTP9020). This feature enables
additional layers of capabilities relative to standard WPC requirements.
This device also features optional security and encryptions to securely
authenticate the receiver before transferring power. This feature is
available when an IDTP9020 is used for the receiver.
The device includes over-temperature/voltage/current protection and a
Foreign Object Detection (FOD) method to protect the base station and
mobile device from overheating in the presence of a metallic foreign
object. It manages fault conditions associated with power transfer and
controls status LEDs to indicate operating modes.
Typical Application Circuit
Base Station
Transmitter(s)
Control System
Wireless
Interface
Control
Mobile Device
Receiver
Control System
Cont
Sensing
Control
Comm
DeMod
Comm
Load
Reflection
IN
PWR
Power Generation
Induction
Comm
Mod
Cont
Sensing
Control
Power Pick-Up
Out
PWR
Package: 6x6-48 TQFN (See page 27)
Ordering Information (See page 28)
Revision 1.0.2
1
© 2012 Integrated Device Technology, Inc.