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Wireless Power Receiver Compliant with WPC

RT1653

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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.

Applications

  • WPC Compliant Receivers
  • Smart Phone
  • Wireless Power Embedded Batteries
  • Portable Media Players
  • Hand-held Devices
Key Spec.
RT1653
Status Active
Vrect (min) (V) 2.7
Vrect (max) (V) 14.5
Vout (min) (V) 4.95
Vout (max) (V) 5.05
Iout (max) (A) 1.8
Power Rating (W) 15
Battery Charging Function No
ComplianceVer WPC 1.2
Function Receiver
Features Adjustable Current Limit;Power Good
Package Type WL-CSP3.4x3.2-56(BSC)
Features
  • 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.)
Datasheet
TitleLast UpdateShareDownload
Wireless Power Receiver Compliant with WPC2020/07/15
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