Power source system with stable loop

A power supply system and stable technology, applied in the direction of control/regulation system, electrical components, and adjustment of electrical variables, etc., can solve the problems of poor loop stability and large variation range of secondary poles, etc., and achieve high reliability and high loop stability Effect

Active Publication Date: 2018-08-21
AMOLOGIC (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the application process of the traditional switching regulator, affected by the large variation range of the load, the variation range of the secondary pole is very large, and the loop stability is poor under the control method of the existing technology

Method used

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  • Power source system with stable loop
  • Power source system with stable loop
  • Power source system with stable loop

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] In a preferred embodiment, as figure 1 As shown, a loop-stabilized power supply system is proposed, which may include:

[0035] A pulse width modulation driver 10, including a control input terminal, a first pulse output terminal and a second pulse output terminal;

[0036] The pulse width modulation driver 10 receives a control signal Vcomp through the control input terminal, and outputs the first pulse signal PWM1 from the first pulse output terminal according to the control signal Vcomp, and outputs the second pulse signal PWM2 from the second pulse output terminal;

[0037] A PMOS transistor PM1, the gate of the PMOS transistor PM1 is connected to the first pulse output terminal;

[0038] An NMOS transistor NM1, the gate of the NMOS transistor NM1 is connected to the second pulse output terminal;

[0039] The drain of the NMOS transistor N...

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PUM

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Abstract

The invention relates to the technical field of electrical electrons, in particular to a power source system with a stable loop. The power source system comprises a pulse width modulating driver, a PMOS pipe, an NMOS pipe, a first comparator, a first diode, a second diode, a first resistor, a second diode, a second resistor, a first capacitor and a current limiting protection circuit; a positive electrode of the first diode is connected with a comparison output end; one end of the first resistor is connected with a negative electrode of the first diode; a positive electrode of the second diodeis connected with the negative electrode of the first diode; the two ends of the second resistor are connected with a negative electrode and the comparison output end of the second diode; one end ofthe first capacitor is connected with the first resistor and is not connected with the first diode. The high loop stability can be guaranteed, and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a loop-stabilized power supply system. Background technique [0002] With the rapid development of microelectronics technology, step-down switching regulators are widely used in step-down situations due to their simple circuit structure, convenient adjustment, and high reliability; according to different control mechanisms, step-down switching regulators The advantages of the working method and the improvement of the conversion efficiency of the converter are more and more applied to switching power supplies. [0003] However, in the application process of the traditional switching regulator, affected by the large variation range of the load, the variation range of the secondary pole is very large, and the loop stability is poor under the control mode of the prior art. Contents of the invention [0004] In view of the above problems, the present invention proposes a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02M1/32H02M1/088
CPCH02M1/088H02M1/32H02M3/158
Inventor 樊茂
Owner AMOLOGIC (SHANGHAI) CO LTD
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