RSM5G02 - High Frequency Smart Power Block

RSM5G02 140A Two-Phase Smart Power Block

The RSM5G02 is a highly integrated 140A two-phase Smart Power Block designed for high-current AI, GPU, FPGA, ASIC, server, and high-performance computing power applications. Integrating smart gate drivers, power MOSFETs, and inductors into a compact 10mm × 9mm × 8mm package, the RSM5G02 reduces PCB area, routing complexity, and external component count while delivering efficient, high-density power conversion.

Operating from a 2.5V to 7.5V input, the RSM5G02 delivers up to 140A of continuous output current (70A per phase) with switching frequencies up to 3MHz and peak efficiency up to 93%. Its two independent outputs can be configured for dual-rail operation or operated in parallel to support a single high-current rail.

Integrated Power for AI and High-Performance Computing

Modern AI processors require increasingly dense power delivery close to the load. The RSM5G02 combines the power stage and magnetics into a single integrated solution, helping minimize the footprint and interconnect losses associated with discrete multiphase implementations.

The device is well suited for powering AI accelerators, GPUs, FPGAs, ASICs, CPUs, servers, and other high-current compute loads where board space, efficiency, transient performance, and thermal management are critical.

Flexible Two-Phase Architecture

The RSM5G02 integrates two independently controlled power phases, each capable of delivering up to 70A. The two outputs can support separate power rails or be connected in parallel for applications requiring up to 140A from a single output.

This flexibility allows system designers to use the same integrated power block across a range of processor and platform requirements while simplifying power-stage design and component selection.

High-Density Integrated Power Stage

By integrating smart drivers, MOSFETs, and inductors in one package, the RSM5G02 significantly reduces the PCB area and routing required between the controller, power stages, and magnetics.

The compact 10mm × 9mm × 8mm, 72-pin LGA package supports high power density while providing a low-profile solution optimized for automated assembly and thermal performance.

Switching frequencies of up to 3MHz enable the use of smaller external components and support compact power designs for space-constrained AI and data-center hardware.

Integrated Monitoring and Protection

The RSM5G02 includes integrated current and junction-temperature sensing to provide the multiphase controller with accurate power-stage information for monitoring and control.

Integrated protection features include VIN and VDRV undervoltage lockout (UVLO), high-side overcurrent protection, cycle-by-cycle current limiting, and overtemperature protection (OTP), helping provide reliable operation under demanding high-current conditions.

Scalable Multiphase Power for AI

When paired with Reed Semiconductor multiphase DC-DC controllers, the RSM5G02 becomes part of a complete, scalable power solution for high-current AI and computing applications.

The combination of intelligent multiphase control and highly integrated Smart Power Blocks enables designers to scale power delivery for increasingly demanding processor rails while reducing component count, PCB complexity, and overall solution footprint.

Key RSM5G02 Specifications

• 2.5V to 7.5V input voltage range
• Up to 140A continuous output current
• 70A continuous current per phase
• Two independently controlled outputs
• Dual-rail or parallel-output operation
• Up to 3MHz switching frequency
• Peak efficiency up to 93%
• Integrated smart gate drivers, MOSFETs, and inductors
• Integrated current and junction-temperature sensing
• VIN and VDRV UVLO
• High-side overcurrent protection
• Cycle-by-cycle current limiting
• Overtemperature protection
• 10mm × 9mm × 8mm, 72-pin LGA package
• –40°C to +125°C operating junction-temperature range
• RoHS compliant