The **GS-R424** is a high-efficiency switching voltage regulator module manufactured by STMicroelectronics. It belongs to the GS-R family of step-down (buck) converters, designed to provide a stable 5V output from a higher DC input voltage. --- ### ## Technical Specifications The following table highlights the primary electronic characteristics of the GS-R424 module: | Parameter | Value | Notes | | :--- | :--- | :--- | | **Input Voltage Range** | 7V to 40V DC | Requires at least 2V overhead above output | | **Output Voltage** | 5.0V DC | Fixed precision output | | **Output Current** | 4.0 Amperes | Continuous maximum rating | | **Efficiency** | Up to 90% | Varies based on input voltage load | | **Switching Frequency** | ~100 kHz | Fixed internal oscillator | | **Package Style** | SIP (Single In-line Package) | Includes integrated heatsink | --- ### ### Key Electronic Components & Features The GS-R424 is an integrated solution, meaning it contains several discrete parts inside a single shielded module: 1. **Switching Regulator IC:** The "brain" of the module that manages Pulse Width Modulation (PWM) to maintain a steady 5V output regardless of input fluctuations. 2. **Power MOSFET:** An internal high-speed transistor that handles the heavy current switching. 3. **Inductor:** A high-quality internal coil used for energy storage during the conversion process. 4. **Protection Circuitry:** * **Short-Circuit Protection:** Automatically limits current if the output is shorted. * **Thermal Shutdown:** Shuts the unit down if the internal temperature exceeds safe limits. * **Soft Start:** Gradually increases voltage during power-up to prevent current spikes. --- ### ### Pinout Configuration The module typically features a 9-pin or 11-pin layout (depending on the specific sub-version). The primary pins include: * **+Vi (Input):** Unregulated DC input (7-40V). * **Go (Ground):** Common return path for input and output. * **+Vo (Output):** Regulated 5V DC output. * **Inhibit:** Allows for remote ON/OFF control of the module using logic levels. * **Sense:** Used to compensate for voltage drops across long traces/wires. --- ### ### Implementation Example To use the GS-R424 in a circuit, minimal external components are required. Usually, only input and output electrolytic capacitors are needed to filter ripple. ```c // Typical Connection Logic Input Voltage (12V-24V) --> [GS-R424 Pin +Vi] Ground --> [GS-R424 Pin Go] [GS-R424 Pin +Vo] --> Stable 5V Output (to Microcontroller/Sensors) ```