Current control circuit and control method thereof

A technology of current control circuit and voltage regulation circuit, applied in the field of electronics, can solve problems such as difficulty, limited application range, and difficulty in meeting the needs of constant current control of bidirectional converters, and achieves a smooth current change without current spikes and oscillations. Effect
CN109842301AActive Publication Date: 2019-06-04MORNSUN GUANGZHOU SCI & TECH
5 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
MORNSUN GUANGZHOU SCI & TECH
Publication Date
2019-06-04

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a current control circuit, which acquires current information on the output side of a bidirectional converter by means of a current sampling circuit, uses the outputs of a first voltage regulating circuit and a second voltage regulating circuit as the input of an error amplifier, regards the output of the error amplifier as the input of an optocoupler feedback circuit, feeds back a current signal on the output side into a PWM circuit through conversion processing by means of various levels of circuits, controls a duty ratio of a switching tube on the input side of a main power circuit by means of a control circuit, and realizes constant current of on the output side. The current control circuit can ensure that the bidirectional converter has no current oscillation and current spike when the bidirectional converter switches an operating direction, can realize the constant current on the output side of the bidirectional converter when only using one forward bandgap voltage reference source, and is simple in circuit.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of electronic technology and relates to a current control circuit for a bidirectional DC-DC converter. Background technique

[0002] Because the bidirectional DC-DC converter can work forward or reverse, it can realize the bidirectional transmission of energy, that is, it allows the electric energy to be transferred from the defined input side to the output side, and also allows the electric energy to be transferred from the defined output side to the input side. Functionally equivalent to two unidirectional DC converters, it has a very wide range of applications in uninterruptible power supplies, battery charging and discharging, electric vehicles, energy recovery systems for high-power equipment, and backup power for high-power equipment.

[0003] The bidirectional converter can define two working directions. When working in the forward direction, the energy is transferred from the input side to the output side; whe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More