Soft start device and method, switching power supply, controller and robot

Abstract

The invention discloses a soft start device and method for a boosted circuit, a switching power supply, a controller and a robot. The device comprises a comparison unit which compares a current actualoutput voltage value of the boosted circuit with a set intermediate target voltage value; and if the current actual output voltage value is smaller than the set intermediate target voltage value, a second control signal is outputted, if the current actual output voltage value is greater than or equal to the set intermediate target voltage value, a first control signal is outputted; the first control unit feeds back a first feedback voltage value of the current actual output voltage value to the boosted circuit based on the first control signal; and the second control unit feeds back a secondfeedback voltage value of the current actual output voltage value to the boosted circuit based on the second control signal. According to the method, the feedback gain of the switching power supply chip is adjustable, so components can be prevented from being damaged by overshoot of the output voltage, and safety of the switching power supply chip is improved.

Description

technical field [0001] The invention belongs to the technical field of switching power supplies, and in particular relates to a soft start device, method, switching power supply, controller and robot for a boost circuit, and in particular to a boost topology hardware soft start circuit, method, switching power supply, controller and robot. robot. Background technique [0002] With the continuous development of the technology industry, the reliability of power supply in electronic products has gradually been paid attention to. In the boost topology circuit, it is often necessary to use a switching power supply chip to control the duty cycle of the MOS tube to achieve boost. However, the feedback gain of the switching power supply chip is fixed, and there is a risk of damage to components due to output voltage overshoot. [0003] The above content is only used to assist in understanding the technical solution of the present invention, and does not mean that the above content...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a soft start device, method, switching power supply, controller and robot for a boost circuit to solve the problem that the fixed feedback gain of the switching power supply chip will cause the output voltage to overshoot and damage the components. The feedback gain of the switching power supply chip can be adjusted to avoid the effect of overshooting the output voltage and damaging the components

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