The **WPT-622-R** is a high-performance **Wireless Power Transfer (WPT) Receiver Module**, typically designed for medium-to-high power industrial or medical applications. It is often paired with a corresponding transmitter (like the WPT-622-T) to form a complete inductive charging system. ### 1. Key Technical Specifications Below is a summary of the core electronic parameters for the WPT-622-R: | Parameter | Specification (Typical) | | :--- | :--- | | **Output Voltage** | 12V DC to 24V DC (Adjustable/Regulated) | | **Output Current** | Up to 2.5A - 3A | | **Maximum Power** | ~60W | | **Transmission Distance** | 5mm to 15mm | | **Efficiency** | >75% (at optimal alignment) | | **Frequency Range** | 100 kHz - 200 kHz | --- ### 2. Core Electronic Components The module consists of several critical stages to convert magnetic fields back into usable electrical energy: #### A. The Induction Coil (Antenna) * **Material:** Usually multi-strand Litz wire to reduce the "Skin Effect" at high frequencies. * **Function:** Captures the oscillating magnetic field from the transmitter and converts it into an AC voltage via electromagnetic induction. #### B. Resonant Capacitor Network * **Function:** These capacitors are tuned to the specific frequency of the transmitter. This creates a LC resonant circuit, which maximizes power transfer efficiency and minimizes heat loss. #### C. Full-Bridge Rectifier * **Function:** Converts the high-frequency AC current received by the coil into a pulsating DC voltage. High-efficiency Schottky diodes or MOSFET-based active rectification are often used to minimize voltage drops. #### D. Voltage Regulator / DC-DC Converter * **Function:** Stabilizes the output. Since the distance between coils can vary, the induced voltage fluctuates. The onboard buck/boost converter ensures a steady 12V or 24V output regardless of minor misalignments. #### E. Communication & Control Logic * **Function:** The module often includes a small MCU or dedicated WPT controller. It sends feedback signals (via Load Modulation) to the transmitter to request more or less power or to signal a "Full Battery" state. --- ### 3. Protection Features To ensure safety in industrial environments, the WPT-622-R integrates several protection circuits: 1. **Over-Current Protection (OCP):** Shuts down the output if the load exceeds the rated amperage. 2. **Over-Temperature Protection (OTP):** Thermal sensors monitor the coil and PCB temperature. 3. **Foreign Object Detection (FOD):** Detects if metal objects (like coins or keys) are between the coils to prevent accidental heating. --- ### 4. Implementation Example To integrate this into a project, the basic wiring logic is as follows: ```markdown [Transmitter] >>> (Magnetic Field) >>> [WPT-622-R Coil] | [Rectifier Stage] | [Regulator Stage] | [V+ / GND Output] ---> (Battery/Load) ```