Introducing RSM3502: High Efficiency, Non-Isolated, Fixed 4:1 Ratio, 1kW, IBC (Intermediate Bus Converter) Power Module

As AI servers, cloud infrastructure, and high-performance computing systems continue to push power requirements higher, designers need compact power conversion solutions that deliver exceptional efficiency, intelligent monitoring, and scalable performance. The RSM3502 Fixed 4:1 Ratio 1kW IBC addresses these challenges by combining industry-leading efficiency, PMBus digital telemetry, and a compact LGA package into a highly integrated Intermediate Bus Converter (IBC).

Designed for modern 48V power architectures, the RSM3502 converts a 40V to 60V input into an adjustable 10V to 15V output, delivering up to 1000W continuous output power and 2000W peak output power. Its integrated digital controller and PMBus interface simplify configuration, system monitoring, and fault reporting, making it an ideal solution for AI, data center, and high-performance computing applications.

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Why Choose the RSM3502 Fixed 4:1 Ratio 1kW IBC?

The RSM3502 is a high-efficiency, non-isolated digital Intermediate Bus Converter featuring a fixed 4:1 transformer turns ratio. Its optimized architecture minimizes conversion losses while providing a tightly regulated output for downstream point-of-load converters.

Delivering up to 98.1% efficiency, the module reduces power dissipation and cooling requirements while enabling higher power density in space-constrained systems.

Unlike traditional analog power modules, the integrated digital controller enables intelligent monitoring and configuration through the PMBus interface, helping designers improve system reliability and simplify power management.

High-Efficiency Power Conversion

1000W Continuous Output Power

The RSM3502 delivers up to 1000W of continuous output power, making it well suited for today’s demanding server and AI power architectures.

Its robust design also supports 2000W peak transient output power, allowing the module to handle rapid load changes associated with GPUs, AI accelerators, and high-performance processors.

Up to 98.1% Efficiency

Power conversion efficiency directly impacts thermal performance and overall system reliability. With efficiency up to 98.1%, the RSM3502 minimizes power losses while maximizing available system power.

Higher efficiency also reduces cooling requirements, improves power density, and lowers overall operating costs in high-performance computing environments.

RSM3502 Fixed 4:1 Ratio 1kW IBC

Real-Time Monitoring

The integrated PMBus interface provides complete visibility into module operation, allowing system designers to monitor:

• Input voltage
• Output voltage
• Output current
• Module temperature
• Fault status

This digital telemetry enables proactive system management while simplifying debugging and long-term maintenance.

Store and Restore Configuration

The built-in digital controller can store and restore operating parameters, allowing systems to retain configuration settings across power cycles.

This capability simplifies production programming, field updates, and maintenance while reducing overall system complexity.

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Built for Scalable Power Architectures

Parallel Operation

As AI and cloud computing platforms continue to require increasing amounts of power, scalability becomes essential.

The RSM3502 supports parallel operation, allowing multiple modules to operate together in multi-kilowatt power systems while maintaining balanced load sharing and high efficiency.

This flexible architecture enables designers to increase available output power without redesigning their power conversion system.

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Compact Package with High Power Density

Despite delivering up to 1000W continuously, the fixed 4:1 ratio 1kW IBC RSM3502 occupies only 23mm × 17.4mm of PCB area.

Available package options include:

• 23mm × 17.4mm × 8mm open-frame package
• 23mm × 17.4mm × 10mm package with integrated heat spreader (HSP)

The compact footprint allows designers to maximize power density while simplifying thermal management.

The module is also MSL3 rated and compatible with standard reflow soldering, supporting high-volume manufacturing processes.

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Comprehensive Protection for Reliable Operation

The RSM3502 fixed 4:1 ratio 1kW IBC integrates multiple protection features to improve system robustness and reduce downtime, including:

• Undervoltage Protection (UVP)
• Overcurrent Protection (OCP)
• Overtemperature Protection (OTP)
• Automatic recovery after supported fault conditions

Combined with digital fault reporting through PMBus, these features help protect valuable downstream circuitry while simplifying system diagnostics.

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Optimized Applications

The Fixed 4:1 Ratio 1kW IBC is ideal for a variety of high-performance power applications, including:

• Artificial Intelligence systems
• GPU accelerator platforms
• Data center infrastructure
• High-performance computing (HPC)
• Enterprise servers
• Networking equipment
• Distributed 48V power architectures

Its combination of high efficiency, compact size, and intelligent monitoring makes it well suited for next-generation computing platforms.

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Explore More Digital Power Solutions from Reed

The RSM3502 Fixed 4:1 Ratio 1kW IBC is part of Reed Semiconductor’s growing portfolio of high-performance Intermediate Bus Converters designed for AI, cloud computing, enterprise servers, networking equipment, and telecommunications infrastructure.

Explore Reed’s complete family of digital power modules to discover scalable IBC solutions with PMBus telemetry, high efficiency, and industry-leading power density for your next design.

Explore the RSM3502

Ready to explore how RSM3502 can power your designs? Visit our website or contact our sales team today for the latest datasheets and application notes.

Thank you for considering Reed Semiconductor for your advanced power management needs.