The RT1653 is a wireless power receiver compliant with WPC V1.2.4 standard. The RT1653 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 15W, 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 Foreign Object Detection (FOD) function is implemented in the RT1653, and this function is certified by WPC V1.2.4 standard. 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 RT1653 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.

应用

WPC Compliant Receivers

Smart Phone

Wireless Power Embedded Batteries

Portable Media Players

Hand-held Devices

关键特性

Single-Chip WPC V1.2.4 Compliant Receiver

Integrated Synchronous Rectifier Switch

Support Output Power up to 15W

High Rectifier Efficiency Up to 97%

High System Efficiency Up to 83%

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

12-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, 272B MTP and ROM 4kB (Boot Loader)

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 3.4mm x 3.2mm 56B (Pitch = 0.4mm)

Low Profile (0.5mm Max.)