Driven by the dual forces of automotive electrification and supply chain autonomy, the domestic substitution of core power devices has evolved from a backup option to a strategic imperative. Facing the stringent requirements for high reliability, high efficiency, and high power density in automotive-grade mid-to-high voltage applications, finding a domestic alternative solution that is powerful, reliable in quality, and stable in supply has become a critical task for numerous automakers and Tier-1 suppliers. When focusing on the 600V N-channel MOSFET from ROHM—the R6035ENZ1C9—the VBP165R36S, launched by VBsemi, emerges as a formidable contender. It not only achieves precise performance alignment but also realizes a leap forward in key parameters based on SJ_Multi-EPI technology, representing a value transformation from "usable" to "excellent," from "substitution" to "surpassing."
I. Parameter Comparison and Performance Leap: Fundamental Advantages Brought by SJ_Multi-EPI Technology
The R6035ENZ1C9 has earned recognition in applications like motor drives and power converters due to its 600V voltage rating, 35A continuous drain current, and 102mΩ on-state resistance at 10V. However, as efficiency demands become more stringent and thermal management critical, the inherent losses and temperature rise of the device pose challenges.
1. Building on hardware compatibility with the TO-247 package and similar configuration, the VBP165R36S achieves significant breakthroughs in key electrical characteristics through advanced SJ_Multi-EPI (Super Junction Multi-Epitaxial) technology:
- Significantly Reduced On-Resistance: With VGS = 10V, the RDS(on) is as low as 75mΩ, a reduction of over 26% compared to the reference model. According to the conduction loss formula Pcond = I_D^2⋅RDS(on), losses are substantially lower at high current operating points, directly improving system efficiency, reducing temperature rise, and simplifying thermal design.
- Enhanced Voltage and Current Ratings: With a drain-source voltage of 650V and a continuous drain current of 36A, it offers higher voltage margin and current handling capability, ensuring robustness in fluctuating automotive environments.
- Optimized Switching Performance: Benefiting from the low gate charge and fast switching characteristics of SJ technology, the device enables lower switching losses under high-frequency operation, thereby enhancing system power density and dynamic response speed.
- Robust High-Temperature Characteristics: The low RDS(on) and stable performance across temperature ranges ensure reliable operation in high-temperature scenarios like engine compartments.
II. Deepening Application Scenarios: From Functional Replacement to System Upgrade
The VBP165R36S not only enables pin-to-pin direct replacement in existing applications of the R6035ENZ1C9 but can also drive overall system performance improvements with its advantages:
1. Motor Drives for EVs/HEVs
Lower conduction and switching losses improve efficiency in traction inverters or auxiliary motor drives, contributing to extended vehicle range and better thermal management.
2. On-Board Chargers (OBC) and DC-DC Converters
In 400V platforms, the reduced losses enhance efficiency across load ranges, supporting higher power density designs and alignment with integration trends.
3. Industrial and Renewable Energy Systems
Suitable for applications like solar inverters, UPS, and PCS, where 600V-650V rating and high current capability enable reliable high-voltage bus operation, reducing system complexity.
4. Automotive Auxiliary Power Supplies
For air conditioning compressors or pump drives, its high-temperature performance ensures durability and reliability under harsh conditions.
III. Beyond Parameters: Reliability, Supply Chain Security, and Full-Lifecycle Value
Choosing the VBP165R36S is not only a technical decision but also a consideration of supply chain and commercial strategy:
1. Domestic Supply Chain Security
VBsemi possesses controllable capabilities across the entire chain from chip design to packaging and testing, ensuring stable supply, predictable lead times, and mitigation of external trade risks, safeguarding production continuity for OEMs and Tier-1s.
2. Comprehensive Cost Advantage
With superior performance metrics, domestic components offer competitive pricing and customization support, reducing BOM costs and enhancing end-product market competitiveness.
3. Localized Technical Support
Provides rapid, full-process support from selection, simulation, testing, to failure analysis, assisting customers with system optimization and accelerating R&D iteration.
IV. Adaptation Recommendations and Replacement Path
For design projects currently using or planning to use the R6035ENZ1C9, the following steps are recommended for evaluation and switching:
1. Electrical Performance Verification
Compare key waveforms under identical circuit conditions. Utilize the low RDS(on) and optimized switching characteristics of the VBP165R36S to adjust drive parameters for further efficiency gains.
2. Thermal Design and Mechanical Validation
Due to reduced losses, thermal requirements may be relaxed, allowing potential optimization of heat sinks for cost or size savings.
3. Reliability Testing and System Validation
After completing electrical/thermal stress, environmental, and lifespan tests in the lab, progressively advance to vehicle-mounted validation to ensure long-term operational stability.
Advancing Towards an Autonomous, High-Performance Power Electronics Era
The VBsemi VBP165R36S is not merely a domestic power MOSFET对标ing international brands; it is a high-performance, high-reliability solution for modern automotive and industrial power systems. Its advantages in conduction loss, voltage rating, and switching performance can help customers achieve comprehensive improvements in system efficiency, power density, and overall competitiveness.
In an era where electrification and domestic substitution advance hand-in-hand, choosing the VBP165R36S is both a rational decision for technological upgrade and a strategic move for supply chain autonomy. We sincerely recommend this product and look forward to collaborating with you to drive innovation and transformation in power electronics.