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A power supply level conversion circuit and method

A technology for converting circuits and levels, applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problems of large size occupied by power supply circuits, reduced power supply reliability, complex control logic, etc., to achieve controllable state, reduce The effect of small volume and number of components

Active Publication Date: 2022-06-14
XIAN MICROELECTRONICS TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology usually converts the power of the bus through the auxiliary power supply to a certain level and then provides it to the corresponding functional circuit. When the functional circuit with different power supply requirements is used in the circuit, multiple sets of auxiliary power supply are required for corresponding power supply. This method makes the power supply circuit take up a larger volume, more components, complex control logic, and reduces the reliability of power supply

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  • A power supply level conversion circuit and method
  • A power supply level conversion circuit and method
  • A power supply level conversion circuit and method

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0029] like figure 1 As shown, the power supply level conversion circuit of the present invention includes a conversion switch control circuit and a level output circuit.

[0030] The transfer switch control circuit is used to control the switch state of the transfer circuit, and includes a relay J1, a resistor R1 and a diode V1. The level output circuit includes resistor R2, resistor R3, resistor R4, MOS tube V2, and diode V3. One end of the resistor R1 is connected to the positive level +VCC provided by the auxiliary power supply, and the other end is connected to the positive end of the relay J1 coil power supply. The function of the resistor R1 is to divide the voltage with the relay J1 coil to ensure that the relay J1 coil works at a suitable voltage; diode V1 and the relay The J1 coil is connected in parallel, and the cathode of the diode V1 is connected to th...

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Abstract

The invention discloses a power supply level conversion circuit and method, comprising a relay J1, a resistor R2, a resistor R3, a resistor R4 and a MOS tube V2; the positive end of the coil power supply of the relay J1 is connected with a positive level +VCC, and the power supply input of the coil of the relay J1 The switch signal connected to the negative terminal is ON / OFF; the pin at one end of the relay J1 contact is connected to the positive level +VCC, and the pin at the other end is connected to the resistor R2; the resistor R2 is connected to the relay J1 and connected in series with the resistor R3 to have a negative voltage Level-VDD; the gate of the MOS transistor V2 is connected to the connection point of the resistor R2 and the resistor R3, the source is connected to the negative level-VDD, the drain is connected to the output terminal VOGND of the conversion circuit through the resistor R4, and the output terminal VOGND of the conversion circuit is connected to the positive Level +VCC connection. Effectively reduces the number of auxiliary power supplies and simplifies the circuit structure.

Description

technical field [0001] The invention belongs to the field of power supply circuits, and relates to a power supply level conversion circuit and method. Background technique [0002] With the development of electronic technology, circuit functions tend to be integrated and miniaturized gradually. In order to realize different circuit functions, different power supply levels are often required in the circuit to meet the needs of different functional circuits in the circuit. The existing technology usually converts the power of the busbar to a certain level through the auxiliary power supply and then provides it to the corresponding functional circuit. When the functional circuits with different power supply requirements are applied in the circuit, multiple sets of auxiliary power supplies are required to supply power accordingly. The method makes the power supply circuit occupy a larger volume, more components, and complex control logic, which reduces the reliability of the pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/16
CPCH02M3/16
Inventor 孙楚昕范喆张新平廖岩蔡正杨阳
Owner XIAN MICROELECTRONICS TECH INST