The **SW6310G** is a high-performance, single-chip wireless power transmitter IC typically used in wireless charging applications. It is designed to be compatible with Qi standards and is often found in fast-charging pads and automotive wireless chargers. --- ### 1. Key Technical Specifications Below are the primary electronic characteristics of the SW6310G: | Feature | Specification | | :--- | :--- | | **Input Voltage Range** | 4V to 14V | | **Maximum Power Output** | Up to 15W (Standard Qi EPP) | | **Integrated Components** | Full-bridge MOSFETs, Driver, LDO, and MCU | | **Modulation Type** | ASK (Amplitude Shift Keying) for Communication | | **Demodulation** | Integrated FSK (Frequency Shift Keying) support | | **Efficiency** | Up to 85% (depending on coil and RX) | --- ### 2. Internal Architectural Parts The SW6310G is highly integrated to reduce the external Bill of Materials (BOM). Its internal structure consists of: * **Integrated Power Stage:** Contains a full-bridge inverter (four N-MOSFETs). This eliminates the need for external power transistors and gate drivers. * **Voltage and Current Sensing:** Built-in high-precision ADC for monitoring input voltage and coil current, which is essential for Foreign Object Detection (FOD). * **Microcontroller (MCU):** An 8-bit or 32-bit core (depending on the specific revision) that handles the Qi protocol handshake and power control loops. * **Communication Module:** Decodes signals sent by the receiver (phone/device) through backscatter modulation. --- ### 3. Application Circuit Components To build a functional wireless charger using the SW6310G, the following external parts are required: 1. **Resonant Capacitors:** Usually a set of high-quality C0G/NP0 ceramic capacitors (e.g., 0.47µF) connected in series with the coil. 2. **Wireless Charging Coil:** Typically a standard Qi-compliant A11 or MP-A2 coil. 3. **Input Filter:** Decoupling capacitors (10µF - 100µF) to stabilize the DC input. 4. **LED Indicators:** Connected to GPIO pins to show charging status (Standby, Charging, Error/FOD). --- ### 4. Safety and Protection Features The chip includes several hardware-level protections to ensure safe power delivery: * **OCP (Over Current Protection):** Shuts down if current exceeds limits. * **OVP (Over Voltage Protection):** Protects the chip from voltage spikes. * **OTP (Over Temperature Protection):** Thermal shutdown if the IC gets too hot. * **FOD (Foreign Object Detection):** Uses power loss accounting to detect metal objects (keys, coins) between the coil and the device.