Cosel CBS1002415-F4: 100W DC-DC Converter Datasheet Analysis
High-Reliability 100W DC-DC Power Conversion for Demanding Thermal Environments
The Cosel CBS1002415-F4 is an isolated DC-DC converter engineered for exceptional reliability in thermally challenging applications. It delivers a precisely regulated 15V output by efficiently converting a wide 18-36V input range, making it a robust power solution for industrial and telecommunications equipment. How does the CBS1002415-F4 ensure operational integrity under thermal stress without active cooling? Its high efficiency minimizes internal heat generation, and an integrated aluminum baseplate facilitates direct conduction cooling to a larger thermal mass, a design choice that enhances long-term field reliability.
- Core Specifications: 100.5W Output | 18-36VDC Input | 15V @ 6.7A Output
- Key Advantages: Exceptional thermal performance, high operational reliability.
Comparative Data for Informed Selection
For system architects evaluating power solutions, understanding the specific performance trade-offs is crucial. The CBS1002415-F4 is positioned for applications where conduction cooling and operational longevity are primary design drivers. The following presents factual data to support your decision-making process.
| Parameter | Cosel CBS1002415-F4 | Representative Industry Peer (100W Half-Brick) |
|---|---|---|
| Baseplate Operating Temp. | -40 to +100°C | Typically -40 to +85°C |
| Efficiency (Typ.) | 89% | 87-90% |
| Internal Capacitors | No aluminum or tantalum electrolytic types | May contain electrolytic capacitors |
| Cooling Method | Conduction Cooling (Baseplate) | Conduction or Forced Air |
For applications demanding a different output configuration, such as a lower voltage for digital logic, the related BSM50GB120DN2 can be reviewed for its specific capabilities.
Frequently Asked Questions (FAQ)
What is the primary benefit of the CBS1002415-F4 not having internal aluminum or tantalum electrolytic capacitors?
Eliminating these components significantly enhances long-term reliability and operational lifespan. Electrolytic capacitors are often a primary failure point in power supplies, especially under high-temperature stress, due to electrolyte dry-out. The design of the CBS1002415-F4 avoids this vulnerability entirely.
How is the output voltage adjusted on the CBS1002415-F4?
The output voltage is adjustable between 9.0V and 16.5V. This is achieved by connecting an external resistor to the TRIM pin. Leaving the TRIM pin open results in the nominal 15V output. Referencing the official instruction manual is essential for correct resistor calculation.
What does the "-F4" suffix signify in the part number?
The "-F4" suffix in the Cosel CBS series ordering information specifies a set of mechanical and optional features. While the base part number defines the electrical characteristics, this suffix indicates that the unit is supplied with a case cover for protection, is intended for through-hole PCB mounting, and has specific pin configurations as detailed in the manufacturer's documentation.
Can the CBS1002415-F4 be used without an external heatsink?
Yes, provided the aluminum baseplate temperature does not exceed 100°C. The module is designed for conduction cooling, meaning it must be mounted to a surface that can effectively draw away heat, such as a metal chassis or a PCB with large copper planes. For applications operating at high ambient temperatures or near the maximum load, an external heatsink is recommended to maintain a safe operating temperature.
Applications Where Thermal Resilience is Paramount
The design philosophy of the Cosel CBS1002415-F4 centers on providing stable, reliable power in environments where conventional cooling methods are impractical or undesirable. Its robust thermal architecture makes it a prime candidate for a range of demanding industrial applications.
- Sealed Enclosures: In NEMA or IP-rated enclosures for industrial control, automation, and outdoor communication systems, where forced-air cooling is not an option, the module's ability to transfer heat via conduction to the enclosure wall is a critical advantage.
- Telecommunication Infrastructure: Deployed in remote or densely packed telecom racks, the high efficiency of the CBS1002415-F4 reduces the overall thermal load, contributing to greater system density and lower cooling energy costs.
- Transportation and Ruggedized Systems: The absence of failure-prone electrolytic capacitors makes it suitable for systems subject to vibration and thermal cycling, such as in railway or specialized vehicle electronics.
For systems where power density and thermal headroom are the most critical factors, the specified -40 to +100°C baseplate operating range of this converter makes it a more resilient choice than typical 85°C-rated alternatives.
A Technical Perspective on Conduction Cooling
The core of the CBS1002415-F4's thermal strategy is its reliance on conduction cooling, facilitated by the aluminum baseplate. This approach treats the entire system's chassis or a dedicated heatsink as part of the thermal management solution. The module's efficiency rating of 89% is a key enabler of this strategy. High efficiency is not just about saving energy; it's a fundamental thermal design parameter. Think of efficiency like the friction on a slide; the lower the friction (higher the efficiency), the less heat is generated as the energy (power) goes down. For a 100.5W output, an 89% efficient converter dissipates approximately 12.7 watts as heat. This relatively low thermal burden, combined with the low thermal resistance path of the baseplate, allows for effective passive cooling, thereby eliminating the mechanical unreliability and audible noise of cooling fans. You can learn more about the fundamentals of power modules in our guide to the backbone of high-efficiency power systems.
Key Performance Parameters
The specifications of the Cosel CBS1002415-F4 are tailored for robust, long-life performance in industrial-grade power systems. Below are the core metrics that define its operational capabilities.
| Specification | Value |
|---|---|
| Input Voltage Range | 18 - 36 VDC |
| Output Voltage / Current | 15V / 6.7A |
| Output Power | 100.5W |
| Efficiency (24V Input, 100% Load) | 89% (Typical) |
| Isolation Voltage | 1,500 VAC (1 minute) |
| Operating Temperature (Baseplate) | -40 to +100°C |
Download the Datasheet for complete specifications and performance curves.
Empowering Future-Focused Industrial Designs
As industrial systems become more decentralized and are deployed in increasingly harsh environments, the demand for power components with inherent resilience grows. The Cosel CBS1002415-F4 addresses this trend by focusing on a design that prioritizes passive thermal management and eliminates common component failure modes. This approach aligns with the strategic need for fit-and-forget power solutions that reduce the total cost of ownership through minimized maintenance and enhanced system uptime. Integrating such high-reliability components is a foundational step in building next-generation industrial infrastructure that is both powerful and durable. To further understand the building blocks of modern power electronics, exploring resources on the fundamentals of IGBT Modules can provide valuable context.
