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Ki Wireless Power Receiver System (Rx)

Overview

Description

This cutting-edge Ki wireless power receiver system (Rx) is designed for wireless power transfer and communication. Ki delivers up to 2kW of power with high-efficiency transfer, low-loss switching, minimal standby current, and dynamically adjusting power (0–2kW) for maximum energy efficiency. By eliminating appliance cables, Ki optimizes kitchen and home spaces, redefining convenience, safety, and performance for modern appliances.

Powered by Renesas' industry-leading NFC and MCU technology, this system offers optional features such as a capacitive touch display graphical user interface (GUI) and Bluetooth communication for monitoring and remote control. It enhances connectivity and user-friendly control by seamlessly integrating with appliances like extractor hoods. Designed for complete compatibility, the Ki wireless power receiver system (Rx) interfaces directly with the Ki wireless power transceiver system (Tx) for a fully integrated wireless power design.

System Benefits:

  • Cordless operation eliminates appliance cables, maximizing countertop and workspace functionality, and supports a wide range of devices, from blenders and toasters to inductive cooking equipment like pots and pans.
  • Dynamic power and appliance-side control provide seamless adjustment from 0kW to 2kW directly from the appliance side (Rx), enabling efficient and precise power management for enhanced user-friendly control and smarter operation of connected appliances.
  • Industry-leading sinusoidal NFC technology reduces EMI, improves power efficiency, and enhances system reliability and longevity. Direct antenna connections lower signal loss, while smaller antennas enable compact designs and lower material costs.
  • Low-loss switching and minimal standby current optimize performance and reduce power consumption.
  • Optional Bluetooth® Low Energy (LE) communication supports smartphone control and remote interfaces.

Comparison

Applications

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WEB_WS043GroundSheet.191Sheet.192Connector dotted lineConnector Line.228Connector Line.180Connector Line.181Connector Line.89Connector LineConnector Arrow.51Bridge Rectifier.1003Sheet.12Sheet.13Sheet.14Sheet.15Sheet.16Sheet.17Sheet.18Sheet.19Sheet.20Sheet.21Sheet.22Sheet.23Sheet.24Sheet.25Sheet.26Sheet.27Isolated AC/DC FlybackIsolated AC/DC FlybackIsolated AC/DC FlybackBuck RegulatorBuck RegulatorBuck RegulatorRelay SwitchComponent block.35Sheet.32Sheet.33Sheet.34Sheet.35InductorSheet.37Sheet.38Sheet.39Connector ArrowCircleConnected signals arrowCircle.45Circle.46Connector Arrow.47400V400V400VConnector Arrow.4912V12V12VTo previous mains powered applianceTo previous mains powered applianceTo previous mains powered applianceConnector Arrow.5312V12V12VLoad SwitchLoad SwitchLoad SwitchConnector Arrow.56Transformer Inductor Coreless (Air conductor).59Sheet.60Sheet.61Sheet.62Sheet.63Sheet.64Sheet.65Sheet.66Sheet.67Sheet.68Ki CommunicationKi CommunicationKiCommunicationNFCNFCNFCSheet.72Transformer Inductor Coreless (Air conductor)Sheet.2Sheet.3Sheet.4Sheet.5Sheet.6Sheet.7Sheet.8Sheet.9Sheet.10Induction Power Transfer Rx CoilInduction Power Transfer Rx CoilInduction Power Transfer Rx CoilConnector Arrow.74 3.3V3.3V3.3VCrystalSheet.78Sheet.79Sheet.80Sheet.81Sheet.82Sheet.83Sheet.8424MHz24MHz24MHzConnector Arrow.97 3.3V3.3V3.3VConnector dotted double arrowHorizontal Wire BundleCommunication Lines B.795 222Crystal.106Sheet.107Sheet.108Sheet.109Sheet.110Sheet.111Sheet.112Sheet.11332kHz32kHz32kHzAntenna.1013Sheet.124Sheet.125Sheet.126Sheet.127Sheet.128Connector dotted line.130Connector dotted line.131Crystal.132Sheet.133Sheet.134Sheet.135Sheet.136Sheet.137Sheet.138Sheet.139 32kHz32MHz32MHzConnector dotted line.141Connector dotted line.142For communication with smartphone or other smart appliances (ex. Extractor hood)For communication with smartphone or other smart appliances (...For communication with smartphone or other smart appliances (ex. Extractor hood)Connector Arrow.149 3.3V3.3V3.3VCrystal.167Sheet.168Sheet.169Sheet.170Sheet.171Sheet.172Sheet.173Sheet.17427.12MHz27.12MHz27.12MHzBi-directionalVertical Wire Bundle 222Sheet.188Connector Arrow.189Connector Line.193Contact Coils to TxContact Coils to TxContact Coils to TxKi Wireless Power Transceiver System (Tx)Ki Wireless Power Transceiver System (Tx)Ki Wireless Power Transceiver System (Tx)Bi-directional.197Bridge Rectifier.200Sheet.201Sheet.202Sheet.203Sheet.204Sheet.205Sheet.206Sheet.207Sheet.208Sheet.209Sheet.210Sheet.211Sheet.212Sheet.213Sheet.214Sheet.215Sheet.216Circle.217Circle.218Circle.219Circle.220Ground.221Sheet.222Sheet.223Connector Line.224Connector Arrow.227Power SwitchPower SwitchPower SwitchBuck-BoostBuck-BoostBuck-BoostConnector Arrow.231Connector Arrow.232Connector Arrow.2333.3V3.3V3.3V3.3Vhigh3.3Vhigh3.3Vhigh3.3Vlow3.3Vlow3.3VlowConnector Line.237Connector Line.238Connector Arrow.242 3.3Vhigh3.3Vhigh3.3VhighCrystal.245Sheet.246Sheet.247Sheet.248Sheet.249Sheet.250Sheet.251Sheet.252 20MHz20MHz20MHzDisplay & Touch ModuleDisplay & Touch ModuleDisplay & Touch ModuleFlashFlashFlashBi-directional.265Bi-directional.267Connector Arrow.2683.3Vhigh3.3Vhigh3.3VhighUSB-CUSB-CUSB-CUSB-CSheet.272Sheet.273Sheet.274Sheet.275Sheet.276Sheet.277Sheet.278Sheet.279Sheet.280Sheet.281Sheet.282Sheet.283Sheet.284Bi-directional.285For debuggingFor debuggingFor debuggingTFT or MIPI DSI DisplayTFT or MIPI DSI DisplayTFT or MIPI DSI DisplayCap TouchCap TouchCap TouchSD CardSD CardSD CardWS043WS043WS043Bi-directional.291Bi-directional.292Bi-directional.293Vertical Wire Bundle.294 444Sheet.296Vertical Wire Bundle.297222Sheet.299Dotted LineIsolationIsolationIsolationConnector Arrow.302 3.3Vhigh3.3Vhigh3.3VhighConnector Arrow.304 3.3Vhigh3.3Vhigh3.3VhighConnector Line.315LineLine.318Line.319Connector Line.320Sheet.321NFCNFCNFCDir. ACDir. ACDir. ACVDDVDDVDDI2CI2CI2CRTCRTCRTCCircle.176Circle.177Sheet.322MCU System ControlMCU System ControlMCUSystem ControlGPIOGPIOGPIOVDDVDDVDDOsc.Osc.Osc.I2CI2CI2CSPISPISPIUARTUARTUARTCircle.90Circle.91Sheet.323Bluetooth Low EnergyBluetooth Low EnergyBluetooth Low EnergyVDDVDDVDDUARTUARTUART RTCRTCRTCRF Osc.RF Osc.RF Osc.Circle.114Circle.115Circle.120Circle.121PHYPHYPHYSheet.324MCU HMI ControlMCU HMI ControlMCUHMI ControlDSIDSIDSIVDDVDDVDD Osc.Osc.Osc. I2CI2CI2CSDSDSD USBUSBUSBCircle.256Circle.257 SPISPISPI QSPIQSPIQSPI
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