Adjustable multi-output isolated voltage stabilizing power circuit

A technology for isolation and voltage stabilization and power supply circuits, which is applied to circuits, electric variable adjustment, and output power conversion devices. Effect of wide variation range and high voltage conversion efficiency

Inactive Publication Date: 2016-03-23
CHINA NORTH ENGINE INST TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing power supply is relatively simple in function, poor in stability and reliability, and cannot meet the needs of some engines. It is necessary to provide a switching power supply circuit with adjustable voltage, electrical isolation, and multiple outputs.

Method used

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  • Adjustable multi-output isolated voltage stabilizing power circuit

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] An adjustable multi-output isolated regulated power supply circuit, such as figure 1 As shown, it includes an input overvoltage protection circuit 1, an anti-reverse connection protection circuit 2, a voltage control circuit 3, an energy conversion inductance component 4 and a multiple output circuit connected in sequence; the multiple output circuit includes a control voltage 12V output circuit 5 , -12V voltage output circuit 6, 5V voltage output circuit 7, isolated 5V voltage output circuit 8.

[0023] The input overvoltage protection circuit 1 includes a TVS diode D1 and a fuse F1, the cathode of the TVS diode D1 is connected to the positive pole of the power supply input volt...

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Abstract

The invention provides an adjustable multi-output isolated voltage stabilizing power circuit which comprises an input overvoltage protection circuit, a reversal connection preventive protection circuit, a voltage control circuit, an energy conversion inductance assembly and a multipath output circuit in successive connection. The energy conversion inductance assembly comprises one group of primary inductance coils and multiple groups of secondary inductance coils, each group of secondary inductance coils corresponds to one path of output of the multipath output circuit, the voltage control circuit comprises a power device in which an oscillator is integrated and a voltage feedback circuit and a compensation circuit connected to the power device, and the power device is connected with the multipath output circuit via the voltage feedback circuit. The adjustable multi-output isolated voltage stabilizing power circuit is characterized by wide change range of input power, high voltage conversion efficiency, fewer peripheral devices, electrical isolation, multipath output and adjustable output voltage, is applied to electric control systems of certain diesel engines successfully, and has great reference values for other power circuits.

Description

technical field [0001] The invention belongs to the technical field of diesel engine measurement and control, and in particular relates to an adjustable multi-output isolated voltage stabilized power supply circuit. Background technique [0002] Diesel engine electronic control technology is the core key technology of diesel engine, which provides practical feasibility for diesel engine to obtain better emission indicators, power performance and economic performance, and the design of ECU is the basis for realizing diesel engine control, which determines the overall framework of ECU, control function and drive capability. [0003] In the prior art, with the continuous improvement of the overall diesel engine's requirements for electronically controlled power supply efficiency, power supply capacity, drive capacity and heat dissipation, power supply design is a key part of system design, and a stable power supply system is a prerequisite for ECU to work reliably. The existin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/24H02M1/32H01F30/04H01F27/30H01F27/32
CPCH02M3/24H01F27/306H01F27/324H01F30/04H02M1/32
Inventor 焦玉琴张建伟褚全红孟长江曹春芳和龙杨薇姚素娟
Owner CHINA NORTH ENGINE INST TIANJIN
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