The **CBS502424-R** is a high-reliability, isolated DC-DC converter manufactured by **Cosel**. It is part of the CBS series, which is designed for industrial and telecommunications applications where high power density and a compact footprint (Half-Brick size) are required. --- ### 1. Key Technical Specifications The model number "CBS502424" encodes its primary ratings: | Feature | Specification | | :--- | :--- | | **Series Name** | CBS Series (Half-Brick) | | **Output Power** | 50 Watts | | **Input Voltage (Nominal)** | 24V DC | | **Input Voltage Range** | 18V to 36V DC | | **Output Voltage** | 24V DC | | **Output Current** | 2.1 Amperes | | **Suffix "-R"** | Remote ON/OFF (Negative Logic) | --- ### 2. Major Electronic Components & Design Features The internal architecture of the CBS502424-R focuses on efficiency and thermal management: * **Isolation Barrier:** Provides high-grade electrical isolation (typically 1,500V AC or 2,000V DC) between the input and output stages to protect sensitive downstream components. * **Synchronous Rectification:** Uses high-efficiency MOSFETs instead of traditional diodes in the secondary stage to minimize power loss and heat generation. * **Built-in Protection Circuits:** * **Overcurrent Protection (OCP):** Automatically recovers when the fault is removed. * **Overvoltage Protection (OVP):** Shuts down the unit if output voltage exceeds safety limits. * **Thermal Protection:** Integrated sensors shut the unit down if the baseplate temperature exceeds $100^{\circ}C$. * **Remote Sensing:** Allows the converter to compensate for voltage drops across the wiring between the power supply and the load. --- ### 3. Physical & Mechanical Attributes | Attribute | Detail | | :--- | :--- | | **Package Size** | Half-Brick ($57.9 \times 12.7 \times 61$ mm) | | **Cooling Method** | Conduction cooling via a baseplate (Requires external heatsink or cold plate) | | **Mounting Type** | Through-hole (PCB Mount) | --- ### 4. Meaning of the "-R" Suffix In Cosel's nomenclature, the **-R** suffix signifies **Negative Logic Remote Control**. * **Standard (No Suffix):** The unit is ON when the RC pin is open/High. * **-R Suffix:** The unit is ON when the RC pin is pulled Low (connected to -Vin). This is often preferred for safety in industrial systems where a disconnected wire should result in the power supply being OFF. ---