The **MP1110-3-RX** belongs to a specialized family of wireless power receiver modules, typically designed for small-scale induction applications like medical devices, wearables, or industrial sensors. --- ## 1. Core Functionality The MP1110-3-RX acts as the "Receiver" (RX) side of a wireless power transfer system. It converts an alternating magnetic field (generated by a transmitter coil) back into stable DC electricity to power a device or charge a battery. ### Key Specifications | Feature | Description | | :--- | :--- | | **Component Type** | Wireless Power Receiver Module | | **Input** | Inductive Magnetic Flux (via Coil) | | **Output Voltage** | Typically regulated 5V DC (common for this series) | | **Efficiency** | High-efficiency synchronous rectification | | **Standard** | Often proprietary or Qi-compatible (depending on the specific revision) | --- ## 2. Main Electronic Stages The module integrates several critical electronic stages into a small footprint: ### A. Resonant Tank Circuit The module utilizes a specific **LC Resonant Circuit**. The external coil (L) and internal capacitors (C) are tuned to the specific frequency of the transmitter to maximize power transfer through magnetic resonance. ### B. Full-Bridge Synchronous Rectifier Because the coil receives alternating current (AC), it must be converted to direct current (DC). * Unlike standard diodes, this module uses **MOSFETs** for synchronous rectification to minimize heat and voltage drop. ### C. LDO / DC-DC Regulation To ensure the output doesn't fluctuate with the distance of the coil, an internal Low-Dropout Regulator (LDO) or Buck converter stabilizes the voltage to a constant level (e.g., 5.0V). ### D. Communication Logic It includes a logic controller that "talks" to the transmitter (TX) by modulating the load. It sends signals to: * Identify itself. * Request more or less power. * Terminate power when the battery is full. --- ## 3. Pinout and Integration While specific layouts can vary by manufacturer (often associated with brands like *Microsemi* or *NuCurrent*), the typical pin configuration includes: ```yaml Pin 1: VOUT (Regulated DC Output) Pin 2: GND (Common Ground) Pin 3: COIL1 (Connection to Induction Coil) Pin 4: COIL2 (Connection to Induction Coil) Pin 5: ADAP (Optional: Sense pin for wired adapter override) ``` --- ## 4. Application Use Cases * **Medical Implants:** Hermetically sealed devices that cannot have charging ports. * **IoT Sensors:** Devices in waterproof housings. * **Wearables:** Smartwatches or fitness trackers requiring a small form factor.