Dual-Mode
Wireless Power Receiver IC
April 17, 2013, Revision 1.0
© 2013 Integrated Device Technology, Inc.
Features
Dual-Mode Wireless Power Receiver
Complies with WPC 1.0.1 and PMA Type 1
Requirements for Certification
Single-Chip Solution
Compatible with all WPC receiver coils
including proprietary and PCB-based coils
Integrated Synchronous Full-Bridge Rectifier
Integrated Synchronous Buck Converter
Closed-Loop Power Transfer control
between Base Station and Mobile Device
Optional Proprietary Back-Channel
Communication
Security and Encryption up to 64-bit
Power Good Status Pin
I
2
C Interface
WLCSP package, 4.65mm x 4.86mm, 0.4mm
pitch
Safety Features
Optional, Advanced Multi-layered Foreign
Object Detection (FOD)
Over Temperature/Voltage/Current
Protection
User-programmable GPIOs for a variety of
LED status/alarm and buzzer indicators
Thermal loop control
Applications
Smartphones, Handsets, and related Accessories
Bluetooth devices
Game Controllers, Remote Controls
PC Peripherals and Storage devices
Tools, medical monitors, fitness accessories
Description
The IDTP9021 is a Dual-Mode single-chip Wireless Power
Receiver IC which complies with the requirements of
both WPC 1.0.1 and PMA Type 1 Interoperability
specifications. The device receives an AC power signal
from a compatible wireless transmitter and converts it
into a regulated 5V output voltage which can be used to
power devices or supply the charger input in mobile
applications.
The IDTP9021 integrates a high-efficiency synchronous
full-bridge rectifier, high-efficiency synchronous buck
converter, and control circuits used to modulate the load
to transmit WPC or PMA-compliant message packets to
the transmitter to optimize power delivery. In WPC mode,
power delivery is limited to 5W in accordance with the Qi
specification. All communication and protocol selection
can be managed by the device, without user supervision.
The device also features optional communication
security with data encryption using a Secure Hash
Algorithm (SHA) of up to 64 bits when communicating
with other IDT Wireless Power devices.
The device includes over-temperature and over-voltage
protection and a Foreign Object Detection method to
protect the base station and the mobile device from
overheating in the presence of a metallic foreign object.
Fault conditions associated with power transfer are
managed by the embedded MCU, which also controls
Status LEDs to indicate operating and fault modes. The
IDTP9021 is available in a 4.86mm x 4.65mm WLCSP
package.
Mobile Device
Receiver
Output Load
Control System
Power Pick-Up
Comm Cont
Mod
Sensing
Control
Out
PWR
Base Station
Transmitter(s)
Input Power
Control System
Power Generation
Comm
Cont
DeMod
IN
PWR
Sensing
Control
Induction
Load
Reflection
Comm
Control
Wireless
Interface
