Power Ramp Control for Data Processing Circuit Transients
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Solution Overview
Problem
Data processing systems face issues with transient IR voltage drops and power transients when data detectors and decoders are suddenly powered on, leading to increased power consumption and the need for higher voltage supplies to compensate, which affects overall power efficiency and performance.
Innovation Solution
Implementing power ramp control by gradually powering up and down the data detector and decoder through staggered clock signal gating and using dummy data with alternating values to manage power consumption, reducing IR drops and transients, and allowing for lower pin voltage supplies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data detector and decoder are suddenly powered on, then system responsiveness is improved, but transient IR voltage drops and power transients occur causing increased power consumption
Solution Approach 1:
The patent applies preliminary action by enabling clock signals to logic regions in a predetermined sequence before full operation begins. The controller activates clock signals to different logic regions at different times, creating a staged startup that prevents sudden power transients while ensuring system responsiveness is maintained.
Solution Approach 2:
The patent segments the data detector and decoder into multiple logic regions, each with independent clock signal control. This segmentation allows the system to power on different portions of the circuitry at different rates, smoothing out the overall power transient while maintaining functional responsiveness.
2Reliability
If higher voltage supply is used to compensate for IR drops, then signal integrity is improved, but power efficiency deteriorates
Solution Approach 1:
The patent applies preliminary action by progressively enabling clock signals to logic regions before full operation begins. This staged approach allows voltage to stabilize gradually, preventing the need for higher voltage supplies to compensate for transient IR drops, thereby maintaining signal integrity while improving power efficiency.
Solution Approach 2:
The patent implements dynamic clock signal enabling where the controller adjusts which logic regions receive clock signals based on power consumption patterns. This dynamic approach optimizes voltage requirements over time, allowing the system to maintain signal integrity without requiring continuously high voltage supplies.
3Productivity
If power is ramped up quickly, then system availability is improved, but power transients increase affecting performance
Solution Approach 1:
The patent segments the power ramp-up process into multiple stages by controlling different logic regions at different times. This segmentation allows the system to achieve availability through functional operation while keeping power transients manageable by distributing the power increase across multiple time intervals.
Solution Approach 2:
The patent implements periodic action through sequential clock signal enabling to different logic regions. The controller follows a predetermined sequence that creates periodic activation patterns, smoothing out power transients while maintaining system availability through progressive functionality.
Data Source
AI summary
An apparatus for processing data includes a data processing circuit configured to process user data, wherein the data processing circuit comprises a number of sub-circuits, a number of clock gates each configured to control a clock signal to one of the sub-circuits, a gating control circuit configured to control the clock gates to apply the clock signal to each of the sub-circuits in staged fashion during a ramped power up operation, and a dummy data source configured to provide dummy data to the data processing circuit during the ramped power up operation of the data processing circuit.


