CMOS Power Minimization for Portable Devices

Energy-Efficient Circuit Design Techniques

Overview

Research paper on CMOS power minimization techniques for portable devices, focusing on reducing power consumption in integrated circuits to extend battery life and improve device efficiency. Submitted to Jain FET Best Paper Competition.

Research Objective

Investigate and propose techniques to minimize power consumption in CMOS (Complementary Metal-Oxide-Semiconductor) circuits used in portable electronic devices.

Background

Power Consumption Challenges

Portable Devices Face:

  • Limited battery capacity
  • Increasing computational demands
  • Heat dissipation constraints
  • User expectations for longer battery life

Power Components in CMOS

  1. Dynamic Power: Switching activity
  2. Static Power: Leakage current
  3. Short-circuit Power: Transitional current

Proposed Techniques

1. Voltage Scaling

  • Reduce supply voltage
  • Dynamic voltage and frequency scaling (DVFS)
  • Multiple voltage domains

2. Clock Gating

  • Disable clock to idle circuits
  • Reduce dynamic power consumption
  • Minimal performance impact

3. Power Gating

  • Shut off power to unused blocks
  • Minimize static leakage
  • Sleep/wake-up state management

4. Transistor Sizing

  • Optimize transistor dimensions
  • Balance speed and power
  • Area-power trade-offs

5. Logic Optimization

  • Minimize switching activity
  • Reduce circuit complexity
  • Gate-level optimization

Technical Analysis

Design Considerations

  • Performance requirements
  • Power budget constraints
  • Area limitations
  • Thermal management

Trade-offs

  • Power vs. Performance
  • Area vs. Power
  • Design complexity vs. Benefits

Methodology

  1. Literature review of existing techniques
  2. Circuit simulation and analysis
  3. Power consumption modeling
  4. Comparative performance evaluation
  5. Optimization strategy development

Expected Results

  • Significant power reduction
  • Maintained or improved performance
  • Extended battery life for portable devices
  • Practical implementation guidelines

Applications

Target Devices

  • Smartphones and tablets
  • Wearable electronics
  • IoT sensors
  • Medical devices
  • Portable computing

Tools & Technologies

  • VLSI design tools
  • Circuit simulation software
  • Power analysis tools
  • CMOS technology libraries

Project Details

Institution: Jain University, Bangalore
Competition: Jain FET Best Paper Competition
Date: February 2023
Status: Submitted (Unpublished)

Academic Contribution

  • Comprehensive literature review
  • Novel optimization approaches
  • Practical design guidelines
  • Foundation for future research

Future Work

  • Hardware implementation
  • Comparative benchmarking
  • Advanced process nodes
  • Machine learning for power optimization
  • Real-world device testing
  • VLSI Design
  • Digital Electronics
  • Low Power Design
  • Integrated Circuits
  • Semiconductor Devices