METHOD AND DEVICE FOR SWITCHING SUPPLY VOLTAGE Russian patent published in 2022 - IPC H03K17/693 

FIELD: methods for switching the supply voltage.

SUBSTANCE: method for switching the supply voltage and the device - the supply voltage switch - belong to the field of electronic engineering and can be used in circuits where it is required to switch the voltage to the load with galvanic isolation of the common primary power source from the two output buses of the device in the off state. In addition, the method and a set of two of these devices can be used in redundant control systems, for example, spacecraft, where it is required to ensure the operation of at least one reserve of a cold redundant system with the admissibility of failure of any one element in the path of any reserve. The effect is achieved by using a pair of CMOS transistors of the same type of conductivity as power switches in one supply voltage bus and in the second supply voltage bus - a pair of CMOS transistors of another type of conductivity. In this case, both pairs of CMOS transistors are switched on by a pulse signal, the open state of the pairs of CMOS transistors is maintained by the voltages of the output voltage multiplying unit of the supply voltage switch. Switching off is carried out by applying pulse signals that prohibit the operation of the voltage multiplication unit, as a result of which all CMOS transistors are closed.

EFFECT: increase in manufacturability, which makes it possible to manufacture a power supply switch of a minimized configuration in the form of a microassembly; invention also facilitates the choice of power switches for a product with increased radiation resistance; in addition, in special applications, increased reliability is provided in the long term, and especially in conditions of exposure to elevated temperatures and high levels of background radiation.

3 cl, 3 dwg, 1 tbl