Power management is crucial in firmware development, especially for consumer electronics, as it directly impacts battery life and device efficiency. When answering this question, highlight your understanding of power management principles, such as reducing power consumption during idle times, using low-power modes, and efficient resource management. Provide examples of techniques you've implemented, such as dynamic voltage and frequency scaling (DVFS), sleep modes, and peripheral management. Discuss any tools or methodologies you use to measure and optimize power consumption, and emphasize the importance of balancing performance with power efficiency. For example:
"In my previous role, I implemented a power management strategy that included dynamic voltage and frequency scaling to reduce power consumption during low-demand periods. I also utilized various sleep modes to ensure minimal power usage when the device was idle. By carefully managing peripheral power and using tools like power profilers, I was able to extend battery life by 20% without compromising performance."
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