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Switch-mode power supply control

A technology for controlling signals, circuits, applied in electrical components, generating electrical pulses, pulse duration/width modulation, etc., and can solve problems such as complex solutions

Active Publication Date: 2018-11-16
STMICROELECTRONICS (ROUSSET) SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Some known solutions use tables of values ​​stored in converters, which constitute particularly complex solutions

Method used

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Examples

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Embodiment Construction

[0023] In the various figures, the same reference numerals denote the same elements.

[0024] For clarity, only steps and elements for understanding the embodiments to be described are shown and will be described in detail. In particular, the operation of the switched-mode power supply and the operation of the energy conversion itself has not been described in detail, the described embodiments being compatible with the conventional operation of the switched-mode power supply.

[0025] Unless otherwise stated, when two elements are referred to as being connected together, it means that they are connected directly without any intervening elements other than conductors, and when they are referred to as being linked together, it means that the two elements can be directly connected. linked (connected) or linked via one or more other elements.

[0026] In the following description, when the terms "approximately", "approximately" and "order of magnitude" are referred to, it means a...

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Abstract

Embodiments of the invention relate to switch-mode power supply control. A control signal is applied to a pulse generating circuit configured to generate pulses that are modulated in width. A circuitprovides for slope-compensation of the control signal. The circuit includes a digital-to-analog converter that generates a decreasing sawtooth signal. A triggering circuit operates to trigger steps ofthe sawtooth signal and resetting the sawtooth signal. The sawtooth signal is reset at a cadence of a frequency of the pulses that are modulated in width.

Description

[0001] priority statement [0002] This application claims priority from French Patent No. 1753897 filed May 3, 2017, the disclosure of which is hereby incorporated by reference in its entirety to the fullest extent permitted by law. technical field [0003] This description relates generally to electronic circuits, and more specifically to the field of switched mode power supplies (SMPS). The present description relates more particularly to a slope compensated digital to analog converter for controlling a switched mode power supply. The description also relates to a programmable digital-to-analog converter and a programmable generator of a tapered sawtooth signal. Background technique [0004] In a power converter based on the principle of a switch-mode power supply, the closed-loop control of the output voltage to the setpoint value is achieved by modulating the pulse width of the control signal for the chopping switch used to switch the input to the inductive element e...

Claims

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Application Information

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IPC IPC(8): H02M1/00H03K5/12
CPCH03K5/12H02M1/0029H02M1/0012H03K3/017H03K7/08H03K4/08H02M1/08
Inventor J-F·林克V·昂德
Owner STMICROELECTRONICS (ROUSSET) SAS
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