Buck -boost circuit

The utility model discloses a buck -boost circuit, including first unit, second unit and main inductance L1, first unit is the same with the circuit structure of second unit, all adopts two -way chopper circuit, the port in A is connected to the one end of first unit, the other end of first unit is connected with the one end of second unit through main inductance L1, the port in B is connected to the other end of second unit, two -way chopper circuit is by electric capacity, the switch nest of tubes and organizes the drive circuit that complex diode cluster becomes with the switch tube. The utility model has the advantages of simple structure, easy realization, application scope are extensively. 本实用新型公开了种升降压电路，包括第单元、第二单元及主电感L1，所述第单元和第二单元的电路结构相同，均采用双向斩波器电路；所述第单元的端连接于A端口，所述第单元的另端通过主电感L1与第二单元的端连接，所述第二单元的另端连接于B端口；所述双向斩波器电路为由电容、开关管组及与开关管组配合的二极管组成的驱动电路。本实用新型具有结构简单、易实现、适用范围广等优点。