The **M5R23TH-R** is a high-performance, single-phase synchronous buck converter power module designed by **TDK (Faraday Semi)**. It is part of the FS1406/FS1412 series family, known for integrating the inductor and power stage into a single, extremely compact package. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the M5R23TH-R: | Parameter | Specification | | :--- | :--- | | **Input Voltage (PVin)** | 4.5V to 16V | | **Output Current** | Up to 6A (Continuous) | | **Output Voltage Range** | 0.6V to 2.5V (Adjustable) | | **Switching Frequency** | Up to 1.5 MHz | | **Package Size** | 3.3mm x 3.3mm x 1.5mm | | **Efficiency** | Peak efficiency > 90% | --- ### 2. Core Electronic Features The M5R23TH-R is classified as a **µPOL™ (Micro Power-Over-Load)** device. Its internal architecture includes several sophisticated subsystems: * **Integrated Inductor:** Unlike traditional buck regulators that require an external coil, this part integrates the inductor directly over the silicon die. This reduces EMI and saves significant PCB real estate. * **Built-in MOSFETs:** High-side and low-side power MOSFETS are integrated with optimized gate drivers to minimize switching losses. * **Digital Control Loop:** It utilizes a high-speed digital control scheme that allows for fast transient response, making it ideal for powering FPGAs and CPUs. * **I2C Interface:** It typically supports an I2C bus for digital configuration, allowing the user to program output voltage and monitor status. --- ### 3. Pin Configuration and Internal Logic The device operates using a specific set of pins to manage power delivery and protection: ```cpp // Logic Representation of Internal Protection States if (Vout > OverVoltage_Threshold) { Trigger_OVP(); // Over-Voltage Protection Shutdown_HighSide_MOSFET(); } if (Temperature > Thermal_Limit) { Thermal_Shutdown(); // Protects the silicon from melting } ``` * **VCC:** Internal LDO output for powering the control circuitry. * **PG (Power Good):** An open-drain output that signals when the output voltage is within the regulation window. * **EN (Enable):** Logic input to turn the converter on or off. --- ### 4. Typical Applications Due to its tiny footprint and high power density, the M5R23TH-R is commonly used in: 1. **High-Density Servers:** Providing "Point of Load" (POL) power to processors. 2. **5G Networking:** Powering RF components and baseband processors. 3. **Storage Systems:** SSD controllers and memory arrays. 4. **FPGA/ASIC Power:** Where low voltage and high current precision are required.