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Voltage converter and power management device including same

A technology of voltage converters and conversion circuits, which is applied in high-efficiency power electronic conversion, conversion devices for measuring current/voltage, and output power, etc., and can solve problems such as switching frequency changes and operational stability problems.

Pending Publication Date: 2021-08-17
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the boost converter operates at the on-time, there may be problems in operation stability when operating in a high load current region, and it is difficult that the switching frequency is changed by the input voltage or the output voltage

Method used

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  • Voltage converter and power management device including same
  • Voltage converter and power management device including same
  • Voltage converter and power management device including same

Examples

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Embodiment Construction

[0024] Hereinafter, at least some example embodiments of the inventive concepts will be described in detail with reference to the accompanying drawings.

[0025] figure 1 is a block diagram illustrating a power management device according to at least one example embodiment of the inventive concepts.

[0026] refer to figure 1 , the power management device PMD may include a reference voltage generating circuit 40 and a voltage converter 1 . The reference voltage generating circuit 40 may generate the reference voltage VREF in response to a reference enable signal or, alternatively, a predetermined enable signal. According to at least one example embodiment of the inventive concepts, the reference voltage generating circuit 40 may be implemented in the form of a voltage dividing circuit using a distribution resistor, and may be configured to provide a stable reference voltage VREF insensitive to temperature changes. It is realized in the form of a bandgap reference circuit. ...

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PUM

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Abstract

A voltage converter includes: a conversion circuit having an inductor connected to a switching node, a first switching element connected between the switching node and a ground voltage, and a second switching element connected between the switching node and an output node; and a switching control circuit configured to adjust a feedback voltage divided from an output voltage of the output node based on a current state of the inductor, and configured to generate a switching control signal based on a sensing signal according to a current of the inductor and the adjusted feedback voltage, the inductor is electrically connected to the inductor for charging the inductor with an input voltage and discharging the voltage charged in the inductor.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2020-0011350 filed with the Korean Intellectual Property Office on January 30, 2020, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0003] At least some example embodiments of inventive concepts relate to a power supply device, and more particularly, to a voltage converter and a power management device including the same. Background technique [0004] Electronic circuits and electronic devices may include a power supply that converts a voltage input from the outside to supply a power supply voltage. Generally, electronic equipment includes a voltage converter used as a power source, and in particular, may include a DC-DC converter having a relatively small size and high efficiency in order to efficiently provide a stable power supply voltage. [0005] In addition, a conventional boost converter can o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02M1/08
CPCH02M3/158H02M1/08H02M1/0025H02M1/0009H02M1/0032H02M3/1566H03K4/48G01R19/175G01R19/16538Y02B70/10H02M3/156H02M1/0003
Inventor 尹淡H.金白东雨尹齐亨赵翔翼
Owner SAMSUNG ELECTRONICS CO LTD