Vicor V300B12H250BL DC-DC Converter | High-Density Power for Demanding Systems
The Vicor V300B12H250BL is a high-efficiency, 250W DC-DC converter module that delivers a tightly regulated 12V output from a wide-range 300VDC nominal input. Engineered for applications where power density and reliability are non-negotiable, this "Mini" size brick converter provides a robust, isolated power solution for industrial, telecommunications, and defense systems. Its performance simplifies thermal management and accelerates time-to-market for complex electronic designs.
The Core of Efficiency: Vicor's ZCS/ZVS Technology
At the heart of the V300B12H250BL lies Vicor's proprietary Zero-Current Switching (ZCS) and Zero-Voltage Switching (ZVS) topology. Unlike conventional hard-switching converters that suffer from significant power loss during transistor transitions, this advanced approach fundamentally changes the game.
- Technical Principle: The ZCS/ZVS architecture ensures that the internal power transistors switch only when current or voltage across them is at or near zero. This drastically reduces switching losses, which are a major source of waste heat and inefficiency in high-frequency power conversion.
- Application Value: For system designers, this translates directly into tangible benefits. The high efficiency (typically over 88%) means less energy is wasted as heat, allowing for smaller heatsinks or even eliminating the need for forced-air cooling in some applications. This not only saves space and cost but also significantly improves the long-term reliability of the entire system by reducing thermal stress on surrounding components. The sophisticated internal design also contributes to excellent high-voltage isolation, a critical safety feature in industrial equipment.
Key Technical Parameters
| Parameter | Value |
|---|---|
| Nominal Input Voltage | 300 VDC |
| Input Voltage Range | 180 - 375 VDC |
| Output Voltage | 12 VDC |
| Output Power | 250 W |
| Efficiency | Up to 88% |
| Isolation Voltage | 3000 Vrms (Input to Output) |
| Operating Temperature (Baseplate) | -40°C to 100°C |
| Package Dimensions (Mini) | 57.9 x 55.9 x 12.7 mm |
For complete specifications, please refer to the official V300B12H250BL Datasheet.
Application Scenarios: Solving Real-World Challenges
The Vicor V300B12H250BL is not just a component; it's a problem-solver in mission-critical environments.
- Industrial Automation & Process Control: In a crowded control cabinet, the V300B12H250BL provides stable, isolated 12V power for PLCs, sensors, and HMIs directly from a high-voltage DC bus. Its compact footprint saves valuable DIN rail space, and its high efficiency prevents overheating in sealed enclosures, boosting system uptime.
- Telecommunications Infrastructure: Deployed in remote base stations or network equipment, this module offers exceptional reliability. The wide input range handles voltage fluctuations from battery backup systems, ensuring consistent performance and reducing the need for costly on-site maintenance.
- Automated Test Equipment (ATE): ATE systems demand clean, stable power rails for accurate measurements. The low-noise output and fast transient response of the Vicor V300B12H250BL ensure that the power supply does not interfere with sensitive instrumentation, improving test accuracy and throughput.
Industry Insight & Design Advantage
As industries push for greater electrification and automation, the demand for compact, efficient, and reliable power conversion has never been higher. The traditional approach of designing a discrete DC-DC converter from scratch is fraught with challenges—complex magnetics design, EMI/EMC compliance hurdles, and extensive validation cycles.
The Vicor V300B12H250BL module offers a strategic advantage. It encapsulates this complexity into a pre-certified, agency-approved component. This dramatically shortens the design cycle, reduces R&D costs, and minimizes project risk. By leveraging superior power electronics packaging, Vicor delivers performance that is difficult and costly to replicate with a discrete solution, allowing engineering teams to focus on their core application logic. Explore More Power Modules to find the perfect fit for your system architecture.
Frequently Asked Questions (FAQ)
- How do I adjust the output voltage?
The V300B12H250BL features a "B-Trim" pin. By connecting an external resistor between the Trim pin and either the +Sense or -Sense pin, you can adjust the output voltage from 50% to 110% of its nominal 12V value. Refer to the datasheet for precise resistor calculations.
- What is the primary consideration for thermal design with this module?
Effective heat removal from the module's metal baseplate is critical for reliability. The baseplate must be mounted to a suitable heatsink or a thermally conductive chassis using a high-quality thermal interface material (TIM). Ensuring a flat mounting surface and proper mounting torque is key to minimizing thermal resistance and keeping the baseplate temperature below its 100°C maximum rating.
For detailed application notes, custom configuration inquiries, or to secure the Vicor V300B12H250BL for your next project, please Contact Us for a Quote.
