Power management technology has changed dramatically over the past decade. The wave of personalization and personalization of electronic products has changed the layout of the consumer electronics market, rewriting the rules of power supply design, integration features and efficiency, and pushing intelligent power management and system knowledge to the forefront of product design.
With the rapid development to this day, we have seen dozens of different types of switching regulators have joined the power management industry, and power efficiency has increased from the previous 10% to 80% today or even higher. This has had a wide-ranging impact: for portable devices, battery life is longer; for high-power systems, the cost of energy use and heating/cooling is significantly reduced.
Given the stakes, high-efficiency power management is no longer an independent consideration or an issue that can be dealt with afterwards. Whether supporting end-load or AC-DC performance specifications, emerging power management technologies not only have the ability to convert to different levels, but are also integrated into the system as part of a complete system solution.
Therefore, in addition to the common problems related to voltage and current requirements, system designers should consider a series of issues such as the following at the beginning of the design process:
How does the interaction of a power supply device with other system ICs affect noise or efficiency levels?
What contribution does the application of intelligent power management contribute to overall design innovation?
How to improve the performance and value of the system by using real-time feedback on the power system?
For example, in base station applications, the use of intelligent power technology to handle AC-DC and isolated DC-DC power conversion can cut system power losses by half. The technology can also be used to monitor signal chain requirements and interact with data converters, amplifiers, and other devices to increase overall system efficiency by 30%.
Data converters in particular require a very low noise and properly regulated power supply to minimize overall system ripple. System designers may encounter situations that take months to optimize the linearity, noise performance, and other characteristics of the data acquisition system, but when power devices are added, they are due to power supply noise and poor transients. The response caused a severe drop in performance.
The momentum of low-noise switching regulators to replace linear regulators will grow stronger, but this requires suppliers to not only excel at power management, but also to understand the entire signal chain and system-level design considerations.
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