The **WCT-511-R** is a specialized wireless charging transmitter module, typically designed for automotive or industrial applications. It is engineered to deliver wireless power (often compliant with Qi standards) to receiving devices like smartphones or smart keys. --- ### 1. Key Technical Specifications The following table summarizes the primary electronic characteristics of the WCT-511-R: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 9V to 16V DC (Standard Automotive range) | | **Output Power** | Up to 15W (Fast Charging support) | | **Frequency Range** | 110 kHz - 205 kHz | | **Efficiency** | > 70% | | **Compliance** | Qi v1.2.4 / Qi v1.3 (depending on revision) | | **Interface** | CAN Bus / LIN Bus for vehicle diagnostics | --- ### 2. Main Electronic Components The architecture of the WCT-511-R consists of several critical subsystems: #### A. Power Controller (MCU) Usually based on an **NXP WCT series** microcontroller. This chip manages the PID (Proportional-Integral-Derivative) loop to maintain stable power transfer and handles communication with the receiver. #### B. Full-Bridge Inverter Comprised of high-efficiency MOSFETs that convert DC input into a high-frequency AC signal. This signal is sent to the primary induction coil. #### C. Resonance Capacitors High-precision, stable C0G/NP0 ceramic capacitors are used to form the resonant tank. These ensure the circuit stays tuned to the required frequency for maximum energy transfer. #### D. Foreign Object Detection (FOD) A circuitry layer that monitors quality factor (Q) and power loss. It detects if metal objects (like coins or keys) are between the charger and the phone to prevent overheating and fire hazards. --- ### 3. Protection & Safety Features The module includes integrated hardware protections: * **Over-Voltage Protection (OVP):** Shuts down if the vehicle battery spikes. * **Over-Current Protection (OCP):** Prevents damage to internal MOSFETs. * **Thermal Throttling:** Reduces power output if the internal thermistor detects temperatures exceeding $85^\circ C$. --- ### 4. Integration Diagram (Functional) ```mermaid graph LR A[Vehicle DC Power] --> B[Voltage Regulator] B --> C[Full-Bridge Inverter] C --> D[Resonant Tank/Coil] D -.-> E((Wireless Power)) F[NXP Controller] --> C F -- Monitoring --> D ```