On-Board Voltage Regulator for Memory Module Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing demand for higher frequency and bandwidth in memory technologies, coupled with the need for reduced power consumption, makes it challenging for system boards to provide tightly regulated power to DRAM devices and I/O interfaces, especially in systems with long product life spans, as different generations of DRAM technology require varying lower voltages, complicating memory technology mixing and upgrades.
Innovation Solution
A voltage distribution system for memory boards that includes an on-board voltage regulator module capable of locally converting an externally supplied voltage into appropriate levels for DRAM devices and buffer/logic components, using high-frequency switching converters like multi-phase synchronous PWM controllers, allowing for independent power supply rails and improved voltage regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If system board voltage sources are used to power memory devices, then power supply simplicity is maintained, but voltage regulation precision deteriorates as DRAM technology advances to lower voltages
Solution Approach 1:
The patent divides the power supply system into two independent parts: system board voltage sources for I/O interface buffers and on-module voltage regulator modules for DRAM cores. This segmentation allows each part to be optimized independently - the VRMs can provide precise low voltage regulation for DRAM while the system board maintains simplicity for I/O power delivery.
2Adaptability or versatility
If multiple power supply rails are provided for different memory technologies, then support for various DRAM generations is enabled, but device complexity increases
Solution Approach 1:
The on-module voltage regulator modules serve multiple functions: they convert a single system board voltage rail into multiple precise voltage levels needed by different DRAM technologies and I/O interfaces. This universal approach eliminates the need for separate power supply rails for each memory generation, simplifying the overall power distribution architecture while maintaining broad technology compatibility.
3Measurement precision
If on-board voltage regulator modules are added for local voltage conversion, then voltage regulation precision is improved, but device complexity increases
Solution Approach 1:
The memory module becomes self-sufficient in power management by incorporating on-board voltage regulator modules that autonomously convert system board voltages to precise DRAM core voltages. This self-service capability transfers the voltage regulation burden from the system board to the memory module itself, improving precision without requiring system board redesign.
4Ease of manufacture
If power supply pins are reduced on memory modules, then ease of manufacture is improved, but power delivery capability deteriorates
Solution Approach 1:
The on-board voltage regulator modules act as intermediaries between the system board power supply and the DRAM devices. They accept power from fewer system board pins and convert it to the multiple precise voltage levels required by DRAM cores and I/O interfaces, effectively amplifying the power delivery capability from limited pins while maintaining manufacturing simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces power supply design complexity and cost, enables tighter voltage regulation, supports multiple DRAM technologies, and allows for cost-effective upgrades and scalability, while minimizing the number of power supply pins and associated components.
Implementation Method 1
locally converting the voltage by an on-board voltage regulator module to generate appropriate local voltage levels
Implementation Method 2
using high-frequency switching converters like multi-phase synchronous PWM controllers
Data Source
AI summary
A memory assembly module including an on-board voltage regulator for converting an externally supplied voltage into appropriate local voltage levels for powering memory devices of the memory assembly module.