The **WCT-5DC-R/Q** is a high-performance wireless charging transmitter module, typically designed for automotive or industrial applications. It is engineered to comply with the Qi wireless charging standards (WPC) to provide efficient power transfer. --- ### 1. Key Technical Specifications The following table summarizes the primary electronic characteristics of the module: | Parameter | Specification (Typical) | | :--- | :--- | | **Input Voltage** | 9V - 16V DC (Automotive Grade) | | **Max Output Power** | 15W (Fast Charging Support) | | **Standard Compliance** | WPC Qi v1.2.4 or higher | | **Charging Efficiency** | >75% | | **Operating Frequency** | 110 kHz - 205 kHz | | **Communication** | In-band (FSK/ASK) and optional CAN/LIN bus | --- ### 2. Core Electronic Components The module is composed of several critical electronic subsystems: * **Integrated Power Controller:** The brain of the module, often featuring a specialized MCU (like an NXP or ST chipset). It manages the PWM (Pulse Width Modulation) for power regulation. * **Full-Bridge Inverter:** Consists of high-efficiency MOSFETs that convert DC input into a high-frequency AC signal to drive the induction coil. * **Inductive Coil (Transmitter):** Usually a multi-coil array (A13 or similar) to allow for better spatial freedom and alignment between the transmitter and the receiver. * **Resonant Capacitors:** High-quality C0G/NP0 ceramic capacitors used to create the LC resonant circuit, ensuring stable energy transfer. * **FOD (Foreign Object Detection) Circuitry:** Analog sensing components that monitor power loss and temperature to detect metallic objects between the coil and the phone, preventing overheating. --- ### 3. Integrated Protection Features The WCT-5DC-R/Q includes robust electronic protection layers to ensure safety in automotive environments: 1. **Over-Voltage Protection (OVP):** Shuts down the circuit if the input voltage exceeds safe levels (e.g., >18V). 2. **Over-Current Protection (OCP):** Prevents damage to the internal MOSFETs during short circuits or excessive load. 3. **Thermal Management:** Built-in NTC thermistors monitor the PCB and coil temperature, throttling power if the unit gets too hot. 4. **EMC/EMI Shielding:** Designed with ferrites and filtered inputs to prevent interference with other vehicle electronics (like keyless entry or radio). --- ### 4. Typical Pinout Logic While specific pinouts vary by manufacturer implementation, the "R/Q" variants generally follow this logic: ```c // Pseudo-code representation of Logic Flow void StartCharging() { if (DetectForeignObject() == FALSE) { PingReceiver(); EstablishCommunication(); // Handshake via ASK EnableFullBridgeInverter(); // Start 15W transfer } else { TriggerErrorLED(); } } ``` ---