The **RSS-3.324-R** is a high-efficiency, isolated DC/DC converter manufactured by **RECOM Power**. It belongs to the "RSS" series, which is specifically designed for industrial applications requiring high power density and reliable isolation. ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Voltage Range** | 2.97V to 3.63V DC (Nominal 3.3V) | | **Output Voltage** | 24V DC | | **Output Current** | 42mA (Max) | | **Output Power** | 1 Watt | | **Isolation Voltage** | 1kV DC / 1 Second | | **Efficiency** | ~75% to 80% | | **Package Type** | SMD (Surface Mount Device) | --- ### 2. Electronic Internal Architecture The RSS-3.324-R operates using a **Switch-Mode Power Supply (SMPS)** topology. Here are the core electronic functional blocks: 1. **Input Filter:** A small internal capacitor filter that smooths the 3.3V input and reduces reflected ripple current back to the main power bus. 2. **Oscillator/PWM Controller:** Converts the DC input into a high-frequency AC signal (usually in the range of 50kHz to 100kHz). 3. **Transformer (Isolation Barrier):** This is the "heart" of the component. It uses electromagnetic induction to transfer power from the 3.3V primary side to the 24V secondary side while ensuring there is no direct electrical connection. 4. **Rectification & Smoothing:** On the secondary side, high-speed diodes rectify the AC back to DC, and an output capacitor stabilizes it to a constant 24V. --- ### 3. Physical Features & Pinout The suffix **"-R"** typically indicates that the product is supplied in **Tape and Reel** packaging, suitable for automated pick-and-place assembly. * **SMD Package:** It features a "Gull-wing" lead style, allowing it to be soldered directly onto the surface of a PCB. * **Case Material:** Non-conductive black plastic (UL94V-0 rated). * **Thermal Management:** It is designed for convection cooling; however, de-rating may occur if operating temperatures exceed 85°C. --- ### 4. Common Applications * **Digital Isolation:** Providing isolated power to RS-485 or CAN bus transceivers. * **Voltage Boosting:** Converting low-level logic power (3.3V) to a higher voltage (24V) needed for specific sensors or actuators. * **Ground Loop Elimination:** Breaking ground loops in sensitive analog circuits to prevent noise interference. ---