Integrated Power Control Device for DDR Termination Load Switches
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Solution Overview
Problem
Conventional electronic power switches are inefficient and costly due to their complexity and requirement for multiple power management ICs, leading to increased footprint size and cost, especially in high-end electronic devices that demand complex power switching with skew rate control and sequencing.
Innovation Solution
A power control device with controller circuitry for generating primary and secondary power control signals, including internal voltage reference generation, slew rate control, and monitoring circuitry for voltage levels, allowing for programmable and synchronized operation of power sources and load switches, reducing the need for external microcontrollers and discrete components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional electronic power switches are used with multiple power management ICs, then complex power switching with skew rate control and sequencing can be achieved, but the footprint size and cost increase significantly
Solution Approach 1:
The patent combines multiple power management functions (power switching control, skew rate control, sequencing, and monitoring) into a single integrated power management IC. This consolidation eliminates the need for multiple separate ICs and external microcontrollers, directly reducing the PCB footprint while maintaining full power switching control capability through integrated controller circuitry that generates both primary and secondary power control signals.
Solution Approach 2:
The integrated power management IC performs multiple functions simultaneously: it controls primary power sources, manages load switches with slew rate control, provides sequencing, and includes monitoring circuitry. This multi-functional approach replaces several specialized ICs with one universal device that handles all power management tasks, thereby reducing overall component count and footprint.
2Measurement precision
If multiple power management ICs and external microcontrollers are used, then precise power control can be achieved, but the device complexity and component count increase
Solution Approach 1:
The patent integrates controller circuitry, voltage reference generation, slew rate control, and monitoring functions into a single power management IC, eliminating the need for external microcontrollers and reducing component count while maintaining precise power control through integrated control mechanisms.
Solution Approach 2:
The power management IC includes internally generated voltage references and control logic that automatically regulate power delivery without requiring external microcontrollers. The device self-manages power switching, sequencing, and monitoring functions, reducing system complexity while maintaining control precision through built-in intelligence.
3Adaptability or versatility
If customized systems with large custom components are used, then complex power switching requirements can be met, but cost increases significantly
Solution Approach 1:
The patent consolidates multiple custom power management functions into a single standardized integrated circuit, eliminating the need for expensive customized components. This integration maintains power switching flexibility through programmable control while significantly reducing manufacturing cost by using standard IC fabrication processes instead of custom component assembly.
Solution Approach 2:
The integrated power management IC provides a universal platform that handles various power switching requirements through internal configuration and control algorithms, replacing the need for expensive application-specific custom components. This multi-functional device achieves adaptability through software or configuration-based control rather than hardware customization.
Data Source
AI summary
A power control device can generate control signals to control operation of power sources. At least one of the control signals may be referenced to an internally provided reference voltage or an externally provided reference voltage. Additional control signals control operation of load switches that can be connected to the power sources to provide secondary sources of power. The load switches can be turned in a gradual manner at rates that depend on the power sources to which they are connected. The outputs of the load switches can be monitored for overvoltage and undervoltage conditions relative to the power sources to which they are connected.