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Power Converter with Adjustable Ramp Signal

A technology of power converter and ramp signal, which is applied in the direction of output power conversion device, DC power input conversion to DC power output, instrument, etc. It can solve the problem of excessive ripple voltage and achieve the effect of improving performance

Active Publication Date: 2021-01-05
M3 TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such excessive ripple voltage is undesirable in many applications

Method used

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  • Power Converter with Adjustable Ramp Signal
  • Power Converter with Adjustable Ramp Signal
  • Power Converter with Adjustable Ramp Signal

Examples

Experimental program
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Embodiment Construction

[0031] The making and using of the presently preferred embodiments are discussed in detail below. It should be appreciated, however, that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the disclosure, and do not limit the scope of the disclosure.

[0032] The present disclosure will be described in the preferred embodiment in the context of a specific scenario known as a ramp signal adjustable power converter. However, the present invention is also applicable to various power converters. Hereinafter, various embodiments will be explained in detail with reference to the accompanying drawings.

[0033] figure 1 A block diagram of a control device of a power converter according to various embodiments of the present disclosure is shown. The power converter 100 is a step-down power converter (also known as a ...

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PUM

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Abstract

A power converter comprising: a first switch and a second switch connected in series between an input power supply and ground; an inductor connected between a common node of the first switch and the second switch and an output capacitor; including a feedback control device and A control device for a ramp signal generator, wherein the ramp signal generator is configured to dynamically adjust the magnitude of the ramp signal based on different operating conditions; an on-time control device; and a latch having a function configured to receive a control A set input of the output signal of the device and a reset input configured to receive the output signal of the on-time control device.

Description

technical field [0001] The present invention relates to control schemes for power converters and, in an embodiment, further relates to power converters with adjustable ramp signals employing a constant on-time control scheme. Background technique [0002] As technology is further developed, various electronic devices such as mobile phones, tablet PCs, digital cameras, MP3 players, and / or the like have become popular. Every electronic device requires DC power at a substantially constant voltage, the voltage of which can be adjusted within specified tolerances even when the current drawn by the electronic device can vary over a wide range. To maintain the voltage within specified tolerances, a power converter (eg, a switching dc / dc converter) coupled to the electronics provides a very fast transient response while maintaining a stable output voltage over various load transients. [0003] A hysteresis based power converter control scheme such as a constant on-time scheme can e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/158
CPCH02M3/158H02M1/0025H02M1/08H02M3/155
Inventor 杨勃席小玉孟庆达
Owner M3 TECHNOLOGY