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随着半导体技术和数字信号处理器的快速发展,数字控制技术为开关电源提供了新的设计途径。传统的模拟控制技术无法摆脱电路中存在的非线性、误差等问题。数字控制的开关电源具有开发周期短、易于监控等优点。介绍了数字电源的概念、特点以及与现有模拟电源的区别。分析和探讨了开关电源系统中数字控制可以采用的拓扑结构和典型控制算法。基于该拓扑结构,较全面地评估了各种控制算法在数字控制电源中的优缺点。基于目前典型的数字电源产品技术,提出了数字电源的发展趋势。
With the rapid development of semiconductor technology and digital signal processor, digital control technology provides a new design approach for switching power supply. The traditional analog control technology can not get rid of the circuit’s nonlinearity and error. Digitally controlled switching power supply has the advantages of short development cycle, easy monitoring and so on. Describes the concept of digital power, features and differences with the existing analog power. The topologies and typical control algorithms that can be used in digital control of switching power supply system are analyzed and discussed. Based on the topology, a more comprehensive assessment of the advantages and disadvantages of various control algorithms in digital control power supply. Based on the current typical digital power product technology, put forward the development trend of digital power supply.