Current detecting circuit and feedback control circuit applied to laminated control power supply and power supply

Abstract

The invention relates to the field of power supply control, in particular to a current detecting circuit and a feedback control circuit applied to a laminated control power supply, and a power supply. Each transformer of the laminated control power supply has more than two parallel taps, a voltage regulator is arranged in each tap branch circuit, and a main circuit current detecting device is arranged at a common output ends of the parallel tap branch circuits. The current detection device comprises branch current computing modules, and one branch current detecting module is arranged on one of any two adjacent tap branch circuits; the branch current detecting devices and the main circuit current detecting devices are connected with the branch current computing modules; the branch circuit computing modules are used for computing current of the tap branch circuits. According to the current detecting circuit and the feedback control circuit applied to the laminated control power supply, and the power supply, a manner that a current detecting device is arranged on every one branch circuit is utilized, so that the application of current detectors in the current detecting circuits is largely reduced.

Description

technical field [0001] The invention relates to the field of power supply control, in particular to a current detection circuit, a feedback control circuit and a power supply for lamination control power supply. Background technique [0002] At present, high-power and wide-voltage range power supplies mostly adopt the stack control method. The control principle of the stack control power supply is as follows: the stack control power supply is composed of a transformer and a feedback control circuit, and the transformer includes multiple tap branches set in parallel (in this paper The mentioned tap branches and branches all represent the same technical concept), each tap branch is equipped with a voltage regulator; the feedback control circuit includes a current detection circuit, and the current detection circuit consists of the branch set in each tap branch of the transformer The current detection device and the total current detection device set at the total output end of ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that at any working time in the prior art, only the current detection devices in two tap branches work at most, causing the current detection devices in the remaining tap branches to be idle and wasteful, and to provide a method that greatly reduces the The current detection circuit of the current detection device in the tap branch for the lamination control power supply is used to detect the current when the lamination control power supply is working. The lamination control power supply includes a transformer, and the output end of the transformer has N taps branch, where N is an integer ≥ 2 (for example, the number of transformer taps can be 3, 4, 5, 6, 7 or even more), and each tap branch includes a transformer tap connected in series Regulator

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