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Synchronous boost regulator circuit with pass-through operation control

A regulator circuit, operation control technology, applied in the direction of electrical components, high-efficiency power electronic conversion, output power conversion devices, etc.

Active Publication Date: 2020-09-04
ANALOG DEVICES INT UNLTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the most common challenges in designing portable electronic devices is generating and maintaining a regulated voltage from an unregulated voltage source such as a battery

Method used

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  • Synchronous boost regulator circuit with pass-through operation control
  • Synchronous boost regulator circuit with pass-through operation control
  • Synchronous boost regulator circuit with pass-through operation control

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Embodiment Construction

[0020] In some boost converter applications, such as boost pre-regulator applications for automotive stop-start and cold-crank applications, the input voltage often exceeds the regulated output voltage. In this case, the operation of the boost converter may be referred to as a flow-through operation.

[0021] The efficiency of the shoot-through operation of a synchronous boost regulator circuit can be greatly improved using the various techniques of this disclosure. For example, a synchronous boost regulator circuit may include an input voltage of V IN to the output voltage V OUT A voltage comparator that accurately monitors the output voltage to detect shoot-through operation. In shoot-through operation, the high-side switch can remain on to maintain high efficiency, and the regulator circuit's quiescent current can be minimized by setting portions of the control circuit in sleep mode.

[0022] In addition, the input voltage V IN A sudden drop in V causes the reverse indu...

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Abstract

In some boost converter applications, an input voltage normally exceeds a regulated output voltage. The operation of the boost converter in this condition can be referred to as a pass-through operation. Using various techniques, the efficiency of a pass-through operation of a synchronous boost regulator circuit can be greatly improved. For example, a synchronous boost regulator circuit can includean input voltage VINto output voltage VOUTvoltage comparator that can accurately monitor the output voltage to detect the pass-through operation. In a pass-through operation, the high-side switch canbe kept ON to maintain high efficiency, and the quiescent current of the regulator circuit can be minimized by setting portions of the control circuit into a sleep mode.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit and priority of US Application No. 16 / 287,918, filed February 27, 2019, the entire contents of which are hereby incorporated by reference. technical field [0003] This document generally relates to, but is not limited to, switch-mode power converters, and more specifically, boost regulator circuits. Background technique [0004] One of the most common challenges in designing portable electronic devices is generating and maintaining a regulated voltage from an unregulated voltage source, such as a battery. A voltage regulator is often used for this purpose. Voltage regulators can be designed as linear regulators or switching regulators. [0005] A linear regulator provides closed-loop control to regulate the voltage at the load. This type of regulator can be used to provide a constant output voltage with a lower amplitude than an unregulated voltage source. [0006] In contrast, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H02M1/08
CPCH02M1/0003H02M1/0009H02M1/0032H02M3/1588Y02B70/10H02M1/0048
Inventor 张斌埃里克·斯蒂芬·扬布莱恩·艾弗里·勒吉特马克·威廉·马洛塞克
Owner ANALOG DEVICES INT UNLTD