RSM3512
High Efficiency, Non-Isolated, Regulated 12V Digital DC/DC Intermediate Bus Converter Power Module
Features
Performance
• The RSM3512 supports a 40V to 60V input voltage range
• Regulated 12V output voltage
• Up to 2000W continuous output power
• Up to 3000W transient output power
• Peak efficiency up to 98%
Digital Control & Telemetry
• PMBus interface for configuration, monitoring, and telemetry
• Stores and restores configuration settings
• Reports input voltage, output voltage, output current, temperature, and fault status
Scalability
• Integrated active current sharing for simplified parallel operation
• Supports parallel operation for multi-kW power systems
• Optimized for AI, HPC, and distributed power architectures
Package
• Industry-standard quarter-brick package (58.4 mm × 36.8 mm × 13.9 mm)
• Wave and reflow soldering compatible (MSL 3)
• UL62368-1 recognized (pending)
• RoHS compliant
Description
RSM3512 2000W Regulated 12V Intermediate Bus Converter with PMBus
The RSM3512 is a high-efficiency, non-isolated 2000W Digital Intermediate Bus Converter (IBC) designed for high-density AI, data center, and high-performance computing power architectures. Operating from a 40V to 60V input, the RSM3512 delivers a tightly regulated 12V output with up to 2000W continuous power, 3000W transient power, and 98% peak efficiency.
Integrated PMBus control and telemetry provide system-level configuration, monitoring, and fault management, while active current sharing simplifies parallel operation for scalable multi-kilowatt power systems.
High-Efficiency 48V-to-12V Power Conversion
The RSM3512 provides an efficient intermediate-bus conversion stage between 48V-class power distribution and downstream high-current point-of-load power. Its 40V to 60V input range supports common data center and distributed power architectures while the regulated 12V output provides a stable intermediate bus for downstream conversion.
With up to 98% peak efficiency, the RSM3512 helps minimize conversion losses and thermal load in high-power systems. The industry-standard quarter-brick package measures just 58.4 mm × 36.8 mm × 13.9 mm and incorporates a heat-spreader for high-power operation and simplified thermal management.
Up to 2000W Continuous and 3000W Transient Power
The RSM3512 delivers up to 2000W of continuous output power and supports transient loads up to 3000W, making it well suited to systems with rapidly changing high-power demands.
This combination of high continuous power capability and transient performance makes the RSM3512 a strong intermediate-bus solution for AI accelerators, GPUs, FPGAs, ASICs, servers, data centers, and HPC systems.
PMBus Digital Control and Telemetry
An integrated digital controller with PMBus provides configuration, monitoring, telemetry, and fault-management capabilities. The RSM3512 reports key operating parameters including:
- Input voltage
- Output voltage
- Output current
- Temperature
- Fault and device status
Configuration settings can also be stored and restored, helping simplify system commissioning, diagnostics, and field management.
Scalable Multi-kW Power with Active Current Sharing
The RSM3512 integrates active current sharing to simplify parallel operation and balanced load distribution between multiple converters. Multiple RSM3512 modules can therefore be used to build scalable multi-kilowatt 12V power architectures as system power requirements increase.
Designed for Reed 48V-to-Core Power Architectures
The RSM3512 can serve as the intermediate conversion stage in Reed Semiconductor’s broader distributed power architecture, converting the 48V-class bus to regulated 12V for downstream conversion.
Combined with Reed multiphase DC-DC controllers, Smart Power Stages, and Smart Power Blocks, the RSM3512 supports an efficient power path from the intermediate bus to high-current processor rails for next-generation AI and data center systems.
RSM3512 Key Specifications
Input Voltage: 40V to 60V
Output Voltage: Regulated 12V
Continuous Output Power: Up to 2000W
Transient Output Power: Up to 3000W
Peak Efficiency: Up to 98%
Digital Interface: PMBus
Current Sharing: Integrated active current sharing
Package: Quarter-brick, 58.4 mm × 36.8 mm × 13.9 mm
Compliance: RoHS; UL62368-1 recognition pending
