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Microchip PIC16F18326 | Demoboard Wireless 5W Charging Transmitter Reference Design
Microchip 5W Qi Wireless Transmitter
Overview
| Topology | Wireless Power Transfer |
| Input voltage | 5 V |
| IC revision | 1 |
Description
The Microchip wireless charging transmitter described in this document is a Basic Power Profile (BPP) charger compatible with the wireless charging Qi 1.1 protocol [1]. The solution includes advanced options, such as efficiency based Foreign Object Detection (FOD) and receiver protection.Since the wireless Qi receivers are backwards compatible, this solution is compatible with receivers supporting (up to the current) version 1.3 of the protocol [1] and has a power limit of 5W (measured on the RX side).Microchip offers a total system solution for Qi wireless charging, comprising of a transmitter and two types of receivers (linear and switching), with an overall system efficiency of more than 70% and full Li-Ion charging algorithm support, customizable for different chemistries.The transmitter is designed to use a minimal number of components, with only a PIC16F microcontroller, two MOSFET drivers and 3 operational amplifiers. The device is based on the Wireless Power Consortium (WPC) A11 reference [1 design and uses a 5V USB-C input to power the circuit.
Features
- Wireless charging transmitter based on the 5W BPP A11 reference design
- Charges most Qi-enabled devices at 1A
- 5V USB-C input
- Efficiency based FOD
- Resonant tank voltage/current protections
- UART interface and GUI
Typical applications
- handheld devices wirelessly
- consumer electronics
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | C | Tol. C | VR(V (DC)) | Operating Temperature | DF(%) | RISO | L(mm) | W(mm) | H(mm) | Fl(mm) | Ceramic Type | Packaging | Interface Type | Gender | Pins | Mount | PCB Thickness(mm) | Working Voltage(V (DC)) | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Compliance | Size | L(µH) | IR(mA) | fres(MHz) | Q(%) | P(W) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 525 nm, Green | Downloads26 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]525 nm | Emitting ColorGreen | Peak Wavelength [typ.]515 nm | Luminous Intensity [typ.]430 mcd | Forward Voltage [typ.]3.2 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | Operating Temperature -40 °C up to +85 °C | – | – | Length1.6 mm | Width0.8 mm | Height0.7 mm | – | – | PackagingTape and Reel | – | – | – | MountSMT | – | – | – | – | – | – | – | – | – | Size0603 | – | – | – | – | – | |||
| WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red | Downloads26 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]625 nm | Emitting ColorRed | Peak Wavelength [typ.]630 nm | Luminous Intensity [typ.]250 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | Operating Temperature -40 °C up to +85 °C | – | – | Length1.6 mm | Width0.8 mm | Height0.7 mm | – | – | PackagingTape and Reel | – | – | – | MountSMT | – | – | – | – | – | – | – | – | – | Size0603 | – | – | – | – | – | |||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | – | Operating Temperature -55 °C up to +125 °C | – | – | Length3.2 mm | Width1.6 mm | Height1.1 mm | Pad Dimension0.5 mm | – | – | – | – | – | MountSMT | – | – | Impedance @ 100 MHz500 Ω | Maximum Impedance610 Ω | Maximum Impedance150 MHz | Rated Current 22500 mA | DC Resistance0.06 Ω | TypeHigh Current | – | Size1206 | – | Rated Current1800 mA | – | – | – | ||||
| WCAP-CSGP MLCCs 10 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 10 V(DC) | – | – | – | – | – | – | – | Capacitance2.2 µF | Capacitance±10% | Rated Voltage10 V (DC) | Operating Temperature -55 °C up to +125 °C | Dissipation Factor10 % | Insulation Resistance0.05 GΩ | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | Size0603 | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | Capacitance22 nF | Capacitance±10% | Rated Voltage50 V (DC) | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Length2 mm | Width1.25 mm | Height0.8 mm | Pad Dimension0.5 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | Size0805 | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | Capacitance10 µF | Capacitance±10% | Rated Voltage25 V (DC) | Operating Temperature -55 °C up to +125 °C | Dissipation Factor10 % | Insulation Resistance0.01 GΩ | Length3.2 mm | Width1.6 mm | Height1.6 mm | Pad Dimension0.5 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | Size1206 | – | – | – | – | – | |||||
 | WE-WPCC Wireless Power Transfer Transmitter Coil, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-WPCC Wireless Power Transfer Transmitter Coil | – | – | – | – | – | – | – | – | – | – | Operating Temperature -20 °C up to +105 °C | – | – | Length47.5 mm | Width47.5 mm | Height3 mm | – | – | – | – | – | Pins2 | MountTHT | – | – | – | – | – | – | DC Resistance0.048 Ω | – | ComplianceQi-A11; MP-A11 | SizeØ 48 x 3 mm | Inductance6.3 µH | Rated Current8000 mA | Self Resonant Frequency16 MHz | Q-Factor115 % | Power Capability [1]100 W | ||||
 | WR-USB Type C Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Type C Connectors | – | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +105 °C | – | Insulation Resistance1000 MΩ | – | – | – | – | – | PackagingTape and Reel | Interface TypeType C | GenderReceptacle | Pins24 | MountTHR | PCB Thickness1.6 mm | Working Voltage48 V (DC) | – | – | – | – | – | TypeHorizontal | – | – | – | Rated Current5000 mA | – | – | – | |||
 | WCAP-CSST Soft Termination, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSST Soft Termination | – | – | – | – | – | – | – | Capacitance10 nF | Capacitance±10% | Rated Voltage50 V (DC) | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | Size0603 | – | – | – | – | – |