The trend toward domestic substitution of core power semiconductors continues to gain momentum, driven by the needs for supply chain resilience and technological independence. In automotive and industrial systems where efficiency, reliability, and cost are critical, selecting the right MOSFET is paramount. Texas Instruments’ RF1S25N06SM9A has been a popular choice for 60V applications, but the search for a high-performance, locally sourced alternative leads to VBsemi’s VBL1632—a device that not only matches but surpasses key parameters, delivering a leap from "direct replacement" to "system upgrade."
I. Parameter Comparison and Performance Advantages: Enhanced Efficiency with Advanced Trench Technology
The RF1S25N06SM9A offers a 60V drain-source voltage, 25A continuous current, and 47mΩ typical on-resistance, making it suitable for various medium-voltage switching applications. However, evolving demands for higher efficiency and power density call for improved switching and conduction performance.
1. Building on the same 60V VDS rating and industry-standard TO-263 package, the VBL1632 leverages advanced Trench technology to achieve notable gains:
- Lower On-Resistance: With VGS = 10V, RDS(on) is reduced to 32mΩ—a significant improvement over the reference part. This directly lowers conduction losses (Pcond = I_D²·RDS(on)), improving efficiency and thermal performance in high-current operating conditions.
- Higher Current Capability: The continuous drain current rating is raised to 50A, doubling the available current capacity compared to the TI device. This allows for higher power handling or increased design margin in applications such as motor drives and DC-DC converters.
- Optimized Gate Characteristics: With a standard VGS rating of ±20V and a threshold voltage Vth of 1.7V, the device ensures robust and compatible drive operation, while its advanced structure supports fast switching and reduced dynamic losses.
II. Application Scenarios: Seamless Replacement with Enhanced System Performance
The VBL1632 is designed for pin-to-pin compatibility in circuits using the RF1S25N06SM9A, while its improved parameters enable broader performance benefits:
1. Automotive Systems: Ideal for LED lighting, electric pumps, fan controllers, and low-voltage DC-DC conversion in 12V/24V automotive networks. Higher efficiency helps reduce thermal stress and improve reliability in engine compartment environments.
2. Industrial Power Supplies: Suitable for synchronous rectification, OR-ing circuits, and motor drive stages in industrial SMPS, UPS, and motor control units. The lower RDS(on) and higher current rating contribute to higher efficiency and power density.
3. Consumer and Computing Applications: Can be used in power-tool battery management, server power supplies, and adapter designs where lower conduction loss and higher current capability are valuable.
III. Beyond Specifications: Reliability, Supply Assurance, and Total Cost Benefits
Choosing the VBL1632 represents a strategic decision that balances technical performance with supply chain and economic factors:
1. Secure Domestic Supply: VBsemi controls the full chain from design to packaging, ensuring stable availability and shorter lead times, reducing exposure to global supply disruptions.
2. Cost-Effective Performance: With superior electrical parameters and competitive pricing, the VBL1632 offers a lower total cost of ownership, enabling more competitive end-product pricing.
3. Local Technical Support: Customers receive prompt assistance during design-in, testing, and troubleshooting, accelerating development cycles and system optimization.
IV. Recommended Replacement Approach
For designs currently using or considering the RF1S25N06SM9A, the following steps are recommended:
1. Electrical Validation: Verify switching behavior, losses, and thermal performance under actual operating conditions. The VBL1632’s lower RDS(on) may allow adjustments in drive or thermal design for further gains.
2. Thermal & Layout Review: Given reduced conduction losses, heat sink requirements may be relaxed, potentially saving space and cost.
3. Reliability Testing: Conduct necessary stress, environmental, and lifecycle tests to ensure full compliance with application standards before final adoption.
Moving Forward with Confidence in Domestic Power Semiconductors
The VBsemi VBL1632 is not just an alternative—it is a technologically superior, supply-secure MOSFET that elevates system performance in 60V automotive, industrial, and consumer applications. With its enhanced current capability, reduced conduction resistance, and domestic manufacturing backbone, it represents a smart choice for designers aiming to improve efficiency while strengthening supply chain resilience.
In an era of increasing electrification and localization, adopting the VBL1632 is both a performance-driven decision and a step toward greater supply chain independence. We are confident in its capability to replace and outperform the RF1S25N06SM9A, and we look forward to supporting your next-generation power designs.