The **98DW20-R3** is a high-performance, compact DC-DC converter manufactured by **P-DUKE Technology**. It is specifically designed for industrial and railway applications where high power density and isolation are required. --- ### ## Technical Specifications Below is a breakdown of the primary electronic characteristics for this component: | Feature | Specification | | :--- | :--- | | **Input Voltage Range** | 9 - 36 VDC (4:1 Ultra-wide input) | | **Output Power** | 20 Watts | | **Output Voltage** | 3.3 VDC / 5 VDC / 12 VDC / 15 VDC (Varies by sub-model) | | **Isolation Voltage** | 1600 VDC (Input to Output) | | **Efficiency** | Up to 90% | | **Package Style** | DIP-24 / 1.0" x 2.0" Standard Package | | **Operating Temp** | -40°C to +105°C | --- ### ### Key Electronic Components & Functions 1. **Wide Input Range Controller**: The "98DW" series utilizes a specialized controller that manages the 4:1 input ratio. This allows the device to handle significant fluctuations in source voltage without affecting the output stability. 2. **Internal EMI Filter**: It features a built-in filter that meets **EN 55032 Class A** standards, reducing the need for external capacitors and inductors in simple designs. 3. **Protection Circuitry**: * **Over-Voltage Protection (OVP)**: Shuts down the unit if the output exceeds safe limits. * **Short Circuit Protection (SCP)**: Hiccup mode with automatic recovery. * **Under-Voltage Lockout (UVLO)**: Prevents the device from operating when the input voltage is too low to ensure reliable startup. 4. **Remote On/Off**: Includes a dedicated pin for remote control, allowing the system to be powered down into a low-current standby mode. --- ### ### Pin Configuration (DIP-24) While always consult the datasheet for your specific revision, the standard 98DW series pinout follows: * **Pin 1:** Remote On/Off * **Pin 2 & 3:** -Input (GND) * **Pin 9:** No Pin / NC * **Pin 11:** No Connection (Single output) * **Pin 14:** +Output * **Pin 16:** -Output * **Pin 22 & 23:** +Input (Vcc) --- ### ### Common Applications * **Railway Systems**: Due to its ability to handle surges and its high isolation. * **Industrial Automation**: Used in PLC (Programmable Logic Controller) power stages. * **Telecommunications**: Providing regulated local power from a 24V bus. * **Distributed Power Architectures**: Ideal where space is limited but power requirements are high.