DS1650 Datasheet, PDF (1/26 Pages) National Semiconductor (TI) – Quad Differential Line Receivers

RT1650
Wireless Power Receiver Compliant with WPC
General Description
The RT1650 is a wireless power receiver compliant
with WPC V1.1 standard. The RT1650 integrates a
synchronous full-bridge rectifier, a low dropout
regulator, and a Micro Controller Unit (MCU) for control
and communication. The device receives AC power
from a WPC compatible wireless transmitter and
provides output power up to 7.5W, which could be used
as a power supply for a charger of mobile or consumer
devices.
The MCU-based controller can support bi-direction
channel communication including Frequency Shift
Keying (FSK) demodulation for power signal from the
transmitter and Amplitude Shift Keying (ASK)
modulation for power signal to the transmitter. The
RT1650 provides Foreign Object Detection (FOD)
function to meet the requirement after WPC V1.1. It
communicates with the transmitter for the received
power to determine if a foreign object is present within
the magnetic interface. This provides a higher level of
safety.
The RT1650 provides a programmable dynamic
rectifier voltage control function to improve power
efficiency, a programmable power management control
for maximum power delivery, a programmable current
limit for suitable load setting, a programmable temperature
setting with external NTC for thermoregulation, and
proper protection functions such as UVLO, OVP, and
OTP.
Features
 Single-Chip WPC V1.1 Compliant Receiver
 Integrated Synchronous Rectifier Switch
 Support Output Power up to 7.5W
 High Rectifier Efficiency up to 96%
 High System Efficiency up to 80%
 Programmable Loading for Synchronous Rectifier
Operation
 Programmable Dynamic Rectifier Voltage Control
for Optimized Transient Response and Power
Efficiency
 High Accurate Received Power Calculation for
FOD Function
 10-bit ADC for Voltage/Current Measurement
 Coil Power Loss Modeling for Optimized
Compensation
 Adaptive Power Offset Compensation
 Low Quiescent Embedded 32-bit ARM Cortex-M0
MCU
 32KB ROM/OTP, 1KB SRAM and 272B MTP
 Easy Tuning for Communication and Control
Parameters
 Support Bi-direction Channel Communication
 FSK Demodulation for Power Signal from
Wireless Power Transmitter
 ASK Modulation for Power Signal to Wireless
Power Transmitter
 Programmable Temperature Control
 Programmable Charge Status Packet
 Support Alignment with Transmitter
 Support Enable, Charge Complete and Fault
Control Inputs
 Receiver Controlled EPT Packet
 Over Current Limit
 Over Voltage Protection
 Thermal Shutdown
 CSP 3.0mm x 3.4mm 48B (Pitch = 0.4mm)
 Low Profile (0.5mm Max.)
Applications
 WPC Compliant Receivers
 Cell Phones & Smart Phones
 Digital Cameras
 Power Banks
 Wireless Power Embedded Batteries
 Headsets
 Portable Media Players
 Hand-held Devices
Copyright © 2015 Richtek Technology Corporation. All rights reserved.
DS1650-00 July 2015
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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