5V 2A Wireless Power Supply Transmitter and Receiver Charging Coil Module Set

5V 2A Wireless Power Supply Transmitter and Receiver Charging Coil Module Set is a matched inductive resonant wireless power transfer kit consisting of a 12V DC transmitter oscillator module with its copper induction coil and a 5V 2A regulated DC receiver module with its matching secondary coil. Capable of transmitting regulated 5V DC power wirelessly through 1mm to 10mm of air, plastic, glass, or wood at up to 1.5A–2A (from a 12V input), it enables completely sealed, waterproof, connector-free charging and powering of handheld instruments, robots, and enclosed IoT sensors.

Key Features:

• Matched Transmitter + Receiver Pair: Includes both the primary high-frequency resonant transmitter PCB/coil and the secondary synchronous-rectified 5V DC receiver PCB/coil.
• High-Current 5V DC Regulated Output (Up to 2A): Receiver module includes an onboard high-efficiency step-down regulator that outputs a stable 5.0V DC at up to 1.5A–2A across a 2mm–8mm air gap.
• Waterproof & Connectorless Power Transfer: Transfers power through non-metallic enclosure walls (ABS, acrylic, glass, silicone), eliminating corroded pogo pins or exposed USB jacks in wet or dusty environments.
• High-Q Litz-Wire Copper Coils: Precision-wound Ø43mm copper coils minimize skin-effect losses at ~100kHz–200kHz resonant operating frequency.
• Ultra-Compact PCB Footprints: Small transmitter and receiver driver boards tuck easily behind the Ø43mm coils inside thin enclosures.

Technical Specifications:

• Transmitter Input Voltage: 12.0V DC Nominal (9V to 12V DC; 12V ≥2A supply recommended for full output)
• Receiver Regulated Output Voltage: 5.0V DC ± 2%
• Maximum Receiver Output Current: Up to 2.0A Peak / 1.0A–1.5A Continuous (Depending on coil separation distance)
• Optimal Coil Separation Distance: 2 mm to 8 mm (1mm to 10mm working range; do not press coils directly together at 0mm without a 2mm non-metallic spacer!)
• Coil Outer Diameter: ~43 mm (Inner Diameter ~20 mm, Thickness ~2.3 mm)

Mechanical Specifications:

• Coil Construction: Multi-Strand Enameled Litz Copper Wire Winding
• Transmitter Module Size: ~18 mm × 8.5 mm × 2.8 mm
• Receiver Module Size: ~25 mm × 10 mm × 3.0 mm

Dimensions:

• Coil Diameter: 43 mm
• Coil Thickness: 2.3 mm
• Total Kit Weight: ~22 g

Pinout and Wiring:

• Transmitter Board (IN+ / IN-): Connect 12V DC positive (Red) and negative (Black) power supply.
• Receiver Board (OUT+ / OUT-): Provides regulated +5.0V DC positive and GND output when aligned coaxially with the transmitter coil.
• Critical Spacing & Metal Warning: Always maintain at least a 2mm non-metallic gap between the two coils (closer than 1.5mm can cause overvoltage on the receiver), and never place metal sheets between the coils.

Datasheet Reference:

• Transfer Topology: Resonant Inductive Coupling Primary Driver + Secondary Bridge Rectifier & 5V Synchronous Buck Regulator

Commonly Used in:

• Waterproof Submersible Sensors, Pool Monitors, and Marine Gadgets
• Autonomous Docking Stations for Mini Robots & AGVs
• Rotating Displays, POV Globes, and Slip-Ring Replacements
• Medical & Cleanroom Sealed Handheld Instruments

Applications:

• Powers or charges sealed waterproof electronics (paired with a TP4056 charger inside the sealed housing) simply by resting the device on a charging cradle.
• Transfers 5V DC power across a rotating joint or turntable without mechanical slip rings that wear out.
• Builds custom wireless charging docks for robotics, smart lamps, and IoT sensors.

Equivalent Models:

• Universal Qi Wireless Charger Receiver Tag Adapter for Mobile Phone: Thin plug-in Qi receiver patch for smartphones.
• Qi Wireless Charger Transmitter Pad for Mobile Phone: Enclosed desktop 5V Qi wireless charging transmitter pad.

Package Includes:

• 1 × 5V 2A Wireless Power Supply Transmitter and Receiver Charging Coil Module Set