DC-DC converter circuit with selectable working modes

The invention discloses a DC-DC converter circuit with selectable working modes, and belongs to the field of DC-DC converters. Compared with a traditional chip working in one mode, the DC-DC converter with the selectable working modes has the advantages that only the mode selection circuit is additionally arranged, so that the chip can work in a voltage control mode or a current control mode, on one hand, the application scene of the chip is wider, and on the other hand, when the application scene is different, compared with a traditional circuit which needs two chips to be researched and developed, the cost of each aspect is greatly improved. 该发明公开了一种工作模式可选DC-DC转换器电路，属于属于DC-DC变换器领域。本发明相比较传统的工作于一种模式的芯片而言，提出的可选工作模式的DC-DC转换器仅增加了模式选择电路，就可以使得芯片可以工作与电压控制模式下或是电流控制模式下，一方面使得芯片应用场景更加广泛，另一方面应用场景不同时，相比于传统电路需要研发两块芯片的各方面成本有较大的改善。