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Power supply system with ripple suppression function

A power system and ripple suppression technology, applied in the direction of output power conversion devices, electrical components, etc., can solve problems such as damage to load-side equipment and power system pressure, and achieve ripple suppression, high reliability, and stability high effect

Active Publication Date: 2018-12-07
AMOLOGIC (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, during the operation of traditional switching regulators, under the influence of loads, especially when multiple loads with similar power consumption characteristics are connected, it is easy to generate output signals in the form of ripples at the output end. Such ripple forms The output signal will cause greater pressure on the power system itself, and in severe cases, it will also cause damage to the equipment at the load end

Method used

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  • Power supply system with ripple suppression function
  • Power supply system with ripple suppression function
  • Power supply system with ripple suppression function

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] In a preferred embodiment, as figure 1 As shown, a power supply system with ripple suppression function is proposed, which can include:

[0034] A pulse width modulation driver 10, including a control input terminal, a first pulse output terminal and a second pulse output terminal;

[0035] 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;

[0036] A first PMOS transistor PM1, the gate of the first PMOS transistor PM1 is connected to the first pulse output terminal, and the drain of the first PMOS transistor is connected to a power supply;

[0037] An NMOS transistor NM1, the gate of the NMOS trans...

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Abstract

The present invention relates to the technical field of power electronics and particularly relates to a power supply system with a ripple suppression function. The system comprises a pulse width modulation driver, a first PMOS, an NMOS, a first comparator, a current limiting protection circuit, and an output compensator which comprises a radio frequency receiving end and a compensating output end,wherein the compensating output end is connected to an output node, the radio frequency receiving end is used for receiving a radio frequency signal with the same frequency of a first preset frequency, the output compensator outputs a compensation signal under the control of the radio frequency signal to compensate a rippled electrical signal output by the output node, the ripple state of the output electrical signal can be suppressed, the stability is high, and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a power supply system with a ripple suppression function. 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, during the operation of traditional switching regulators, under the influence of loads, especially when multiple loads with similar power consumption characteristics are connected, it is easy to generate output signals in the form of ripples at the output end. Such ripple forms The output signal will cause greater pressure on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/14H02M1/15
CPCH02M1/143H02M1/15
Inventor 樊茂
Owner AMOLOGIC (SHANGHAI) CO LTD