Switching regulator transient response circuit
A switching regulator and transient response technology, applied in the direction of electrical components, output power conversion devices, etc., can solve the problems of poor transient response capability, large influence, and low reliability, and achieve high reliability and fast response Fast, transient response capable of strong effects
Active Publication Date: 2018-09-21
AMOLOGIC (SHANGHAI) CO LTD
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Problems solved by technology
[0003] However, traditional switching regulators controlled by PWM technology are greatly affected by the load, have poor transient response capability, and cannot provide a sufficiently stable power supply for the load, resulting in a high probability of power problems and low reliability.
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[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0036] Such as figure 1 As shown, in a preferred embodiment, a transient response circuit of a switching regulator is proposed, which may include:
[0037] The step-down module 10 includes:
[0038] A signal input terminal INT for receiving an input signal and a signal output terminal OUT for outputting an output signal;
[0039] The main circuit 11 is connected in series between the signal input terminal INT and the signal output terminal OU...
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The invention relates to the technical field of power electronics, and particularly relates to a switching regulator transient response circuit comprising a voltage reduction module; a first acquisition module; a second acquisition module; a third acquisition module; a comparison module which compares the superposed signal of the ramp signal and the feedback signal with the acquisition signal andoutputs a comparison signal through the comparison output end; and a pulse width modulation module. When the working current of the main circuit acquired by the third acquisition module is greater than a preset value, the specific value of the output feedback signal to the working current of the main circuit is equal to 1. When the working current of the main circuit acquired by the third acquisition module is less than the preset value, the specific value of the output feedback signal to the working current of the main circuit is less than 1. The transient response capacity is high, the reaction speed is high and the reliability is high.
Description
Technical field [0001] The present invention relates to the technical field of power electronics, in particular to a transient response circuit of a switching regulator. Background technique [0002] With the rapid development of microelectronics technology, switching regulators are widely used in various occasions due to the advantages of simple circuit structure, convenient adjustment, and high reliability. Switching regulators often use PWM (Pulse Width Modulation) control methods. Good noise reduction advantage. [0003] However, traditional switching regulators that use PWM technology for control are greatly affected by the load and have poor transient response capabilities. They cannot provide a sufficiently stable power supply for the load, causing a high probability of power problems and low reliability. . Summary of the invention [0004] In view of the above problems, the present invention proposes a transient response circuit of a switching regulator, which includes: [...
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IPC IPC(8): H02M1/00
CPCH02M1/00H02M1/0003H02M1/0009
Inventor 樊茂
Owner AMOLOGIC (SHANGHAI) CO LTD