KR20160011894A - Direct power supply system - Google Patents

Direct power supply system Download PDF

Info

Publication number
KR20160011894A
KR20160011894A KR1020140093155A KR20140093155A KR20160011894A KR 20160011894 A KR20160011894 A KR 20160011894A KR 1020140093155 A KR1020140093155 A KR 1020140093155A KR 20140093155 A KR20140093155 A KR 20140093155A KR 20160011894 A KR20160011894 A KR 20160011894A
Authority
KR
South Korea
Prior art keywords
voltage
application circuit
microprocessor
control switch
switch
Prior art date
Application number
KR1020140093155A
Other languages
Korean (ko)
Inventor
곽재황
Original Assignee
주식회사 에스원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 에스원 filed Critical 주식회사 에스원
Priority to KR1020140093155A priority Critical patent/KR20160011894A/en
Publication of KR20160011894A publication Critical patent/KR20160011894A/en

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/62—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using bucking or boosting dc sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel

Abstract

The present invention relates to a direct power system. In an example, disclosed is the direct current power system which comprises: a plurality of voltage supply lines for transferring voltage to a plurality of output terminals in an input terminal respectively; a plurality of control switches individually connected between the voltage supply line and a ground voltage terminal; a plurality of voltage-dividing resistors connected to the control switches in parallel respectively; a plurality of application circuit units receiving voltage through the output terminal; and a microprocessor for executing an algorithm operation of the application circuit, and controlling a switching frequency and a duty ratio of the control switch to supply constant voltage to the application circuit by monitoring a change of voltage applied to the voltage-dividing resistor.

Description

[0001] DIRECT POWER SUPPLY SYSTEM [0002]

The present invention relates to a DC power system.

Power management in the conventional constant power system is not considered as an important factor, but it is becoming a very important factor in an embedded system using a battery.

The existing embedded system is designed by separately designing the power part and the application circuit part, and fixing the power part to the application circuit part. In this case, the power of the power source portion and the power of the application circuit portion are separately managed, and it is difficult to efficiently manage the power of the system.

The present invention provides a DC power supply system capable of efficiently supplying power in accordance with an application circuit and controlling an output voltage programmably by integrally controlling the power management part and the power management part in the power supply part and the application circuit part.

According to an aspect of the present invention, there is provided a DC power supply system including: a plurality of voltage supply lines for transmitting voltages from an input terminal to a plurality of output terminals, respectively; A plurality of control switches respectively connected between the voltage supply line and the ground voltage terminal; A plurality of voltage dividing resistors connected in parallel with the plurality of control switches; A plurality of application circuit units receiving a voltage through the output terminal; And a microprocessor for executing an algorithm operation of the application circuit part and monitoring a change in a voltage applied to the voltage dividing resistor to adjust a switching frequency and a duty ratio of the control switch so that a constant voltage is supplied to the application circuit part.

The apparatus may further include a plurality of choke coils respectively connected between the input terminal and the control switch.

The control switch may further include a plurality of capacitors connected in parallel with the control switch and the voltage dividing resistor between the control switch and the voltage dividing resistor.

The control switch may further include a plurality of reverse current diodes connected between the control switch and the capacitors.

The microprocessor may further include a plurality of feedback lines connected to the analog-to-digital converter of the microprocessor, respectively, from the voltage-dividing resistor to monitor a voltage applied to the voltage-dividing resistor.

Further, the microprocessor may turn off the control switches when the algorithm operation of the application circuit unit is stopped.

According to another aspect of the present invention, there is provided a direct current voltage system comprising: a plurality of voltage supply lines for transferring a voltage from an input terminal to a plurality of output terminals, respectively; A plurality of application circuit units receiving a voltage through the output terminal; A switch unit connected between the voltage supply line and the ground voltage terminal, respectively, for detecting a voltage supplied to the application circuit unit and adjusting a voltage supplied to the application circuit unit, respectively; And a microprocessor for performing an algorithm operation of the application circuit section and monitoring a change in a voltage detected through the switch section to control switching of the switch section so that a constant voltage is supplied to the application circuit section.

According to the present invention, it is possible to provide a DC power supply system capable of efficiently supplying power in accordance with an application circuit and controlling an output voltage programmably by integrating and controlling the power management part into a power supply part and an application circuit part .

1 is a circuit diagram showing a configuration of a DC power supply system according to an embodiment of the present invention.
2 is a flowchart illustrating an operation method of a DC power supply system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings so that those skilled in the art can easily carry out the present invention.

1 is a circuit diagram showing a configuration of a DC power supply system according to an embodiment of the present invention.

Referring to FIG. 1, a DC power supply system 100 according to an embodiment of the present invention includes first and second voltage supply lines VSL1 and VSL2, first and second control switches Q1 and Q2, And second and third voltage dividing resistors R1, R2, R3 and R4, first and second application circuit portions 111 and 112, and a microprocessor 120. In addition, the DC power supply system 100 includes first and second choke coils L1 and L2, first and second capacitors C1 and C2, first and second reverse current diodes D1 and D2, And may further include first and second voltage feedback lines FBL1 and FBL2.

In the DC power supply system 100 according to the embodiment of the present invention, one switch section is formed in one application circuit section. Hereinafter, a DC power supply system including two application circuit units and two switch units will be described as an example for convenience of explanation. However, an application circuit unit may be added as needed, and a switch unit may be additionally provided. The switch unit may mean one unit consisting of a voltage supply line, a control switch, a voltage dividing resistor, a voltage feedback line, a choke coil, a capacitor, and a reverse current prevention diode.

The first voltage supply line VSL1 is branched from the voltage input terminal VCC_IN and connected to the first voltage output terminal VCC_OUT1 to supply a voltage input through the voltage input terminal VCC_IN to the first voltage output terminal VCC_OUT1 .

The first control switch Q1 is connected between the first voltage supply line VSL1 and the ground voltage terminal, and the switching operation can be controlled by the microprocessor 120. [

The first voltage-dividing resistors R1 and R2 are connected between the first voltage supply line VSL1 and the ground voltage terminal at the rear end of the first control switch Q1 and are connected in parallel with the first control switch Q1. Can be connected.

The first application circuit unit 111 may receive an input voltage through the first voltage output terminal VCC_OUT1. The first application circuit unit 111 may perform an algorithm operation by the microprocessor 120 and may transmit information on a voltage required for the first application circuit unit 111 to the microprocessor 120. [

The microprocessor 120 receives the voltage detected through the first voltage dividing resistors R1 and R2 through the first voltage feedback line FBL1 and outputs the analog value fed back to the ADC1, to-Digital Converter), and can monitor changes in the converted digital values. Here, the digital value may mean a supply voltage of the first application circuit unit 111 that the microprocessor 120 can recognize. The microprocessor 120 may sense the change of the digital value and adjust the switching frequency and the duty ratio of the first control switch Q1 so that the first application circuit unit 111 is supplied with a constant voltage.

The first choke coil L1 is connected on the first voltage supply line VSL1 and more specifically may be connected between the branch node of the voltage input VCC_IN and the first control switch Q1 have.

The first capacitor C1 may be connected in parallel with the first control switch Q1 and the first voltage dividing resistors R1 and R2 between the first control switch Q1 and the first voltage dividing resistors R1 and R2 have.

The first reverse current prevention diode D1 is connected on the first voltage supply line VSL1 and more specifically may be connected between the first control switch Q1 and the first capacitor C1.

The first voltage feedback line FBL1 is connected between the first and second voltage dividing resistors R1 and R2 and may feed back the voltage applied to the first voltage dividing resistors R1 and R2 to the microprocessor 120 .

The second voltage supply line VSL2 is branched from the voltage input terminal VCC_IN and connected to the second voltage output terminal VCC_OUT2 so that a voltage input through the voltage input terminal VCC_IN is connected to the second voltage output terminal VCC_OUT2 .

The second control switch Q2 is connected between the second voltage supply line VSL2 and the ground voltage terminal, and the switching operation can be controlled by the microprocessor 120. [

The second voltage-dividing resistors R3 and R4 are connected between the second voltage supply line VSL2 and the ground voltage terminal at the rear end of the second control switch Q2, and parallel to the second control switch Q2. Can be connected.

The second application circuit part 112 may receive an input voltage through the second voltage output terminal VCC_OUT2. The second application circuit unit 112 may perform an algorithm operation by the microprocessor 120 and may transmit information on a voltage required for the second application circuit unit 112 to the microprocessor 120.

The microprocessor 120 feeds back the voltage detected through the second voltage dividing resistors R3 and R4 through the second voltage feedback line FBL2 and outputs the fed analog value to the internal ADC2, to-Digital Converter), and can monitor changes in the converted digital values. Here, the digital value may refer to a supply voltage of the second application circuit unit 112 that the microprocessor 120 recognizes. The microprocessor 120 may sense the change of the digital value and adjust the switching frequency and the duty ratio of the second control switch Q2 so that a constant voltage is supplied to the second application circuit unit 112. [

The second choke coil L2 is connected on the second voltage supply line VSL2 and more specifically may be connected between the branch node of the voltage input VCC_IN and the second control switch Q2 have.

The second capacitor C2 may be connected in parallel with the second control switch Q2 and the second voltage dividing resistors R3 and R4 between the second control switch Q2 and the second voltage dividing resistors R3 and R4. have.

The second reverse current prevention diode D2 is connected on the second voltage supply line VSL2 and more specifically may be connected between the second control switch Q2 and the second capacitor C2.

The second voltage feedback line FBL2 is connected between the second voltage dividing resistors R3 and R4 to feed back the voltage applied to the second voltage dividing resistors R3 and R4 to the microprocessor 120 .

In the above description, the system composed of two application circuit portions and two switch portions has been described as an example. However, the present invention is not limited to such a configuration, and additional configuration of the switch portion according to addition of application circuit portions is also possible.

2 is a flowchart illustrating an operation method of a DC power supply system according to an embodiment of the present invention.

Referring to FIG. 2, when the DC power supply system is started (S210), power is supplied from the power supply unit (S220).

Thereafter, the slim mode of the DC power supply system is released (S230), and the microprocessor monitors the voltage fed back from each of the voltage dividing resistors in order to adjust the voltage for each application circuit (S240).

Then, the microprocessor controls the switching of the control switch through PWM (Pulse Width Modulation) of the switch unit so that a constant voltage is supplied to the application circuit unit based on the feedback voltage (S250). At this time, the microprocessor simultaneously performs the PWM control of the switch unit and the monitoring of the pad back voltage while executing the algorithm operation of each application circuit unit.

When the algorithm operation of the application circuit part is finished (S260), the microprocessor turns off the control switch of the switch part (S270) and ends the power supply control operation together (S280).

According to the embodiment of the present invention, when a microprocessor executes an algorithm operation of an application circuit, a switch circuit for supplying power to the application circuit is also controlled, thereby limiting unnecessary current use of the DC power supply system. .

In addition, the voltage and current values can be programmably adjusted through the microprocessor by adding a switch circuit in addition to the application circuit.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. It is.

100: DC power system
111, 112: application circuit section
120: Microprocessor
Q1, Q2: Control switch
C1, C2: Capacitors
D1, D2: reverse current prevention diode
L1, L2: choke coil
VCC_IN: voltage input terminal
VCC_OUT: Voltage output stage
VSL1, VSL2: voltage supply line
R1, R2, R3, R4:
FBL1, FBL2: voltage pad back line
CL1, CL2: control line

Claims (7)

A plurality of voltage supply lines each for transmitting a voltage from an input terminal to a plurality of output terminals;
A plurality of control switches respectively connected between the voltage supply line and the ground voltage terminal;
A plurality of voltage dividing resistors connected in parallel with the plurality of control switches;
A plurality of application circuit units receiving a voltage through the output terminal; And
And a microprocessor for controlling the switching frequency and the duty ratio of the control switch so as to supply a constant voltage to the application circuit part by monitoring the change in the voltage applied to the voltage- DC power system. The method according to claim 1,
Further comprising a plurality of choke coils each connected between the input and the control switch. The method according to claim 1,
Further comprising a plurality of capacitors connected in parallel with the control switch and the voltage dividing resistor between the control switch and the voltage dividing resistor. The method of claim 3,
Further comprising a plurality of reverse current diodes connected between the control switch and the capacitors, respectively. The method according to claim 1,
Further comprising a plurality of feedback lines each connected to the analog-to-digital converter of the microprocessor from the voltage-dividing resistor to monitor the voltage applied to the voltage-dividing resistor by the microprocessor. The method according to claim 1,
Wherein the microprocessor turns off the control switches when the algorithm operation of the application circuit unit is stopped. A plurality of voltage supply lines each for transmitting a voltage from an input terminal to a plurality of output terminals;
A plurality of application circuit units receiving a voltage through the output terminal;
A switch unit connected between the voltage supply line and the ground voltage terminal for respectively detecting a voltage supplied to the application circuit unit and adjusting a voltage supplied to the application circuit unit; And
And a microprocessor for executing an algorithm operation of the application circuit section and monitoring a change in voltage detected through the switch section and controlling switching of the switch section so that a constant voltage is supplied to the application circuit section. .
KR1020140093155A 2014-07-23 2014-07-23 Direct power supply system KR20160011894A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140093155A KR20160011894A (en) 2014-07-23 2014-07-23 Direct power supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140093155A KR20160011894A (en) 2014-07-23 2014-07-23 Direct power supply system

Publications (1)

Publication Number Publication Date
KR20160011894A true KR20160011894A (en) 2016-02-02

Family

ID=55354413

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140093155A KR20160011894A (en) 2014-07-23 2014-07-23 Direct power supply system

Country Status (1)

Country Link
KR (1) KR20160011894A (en)

Similar Documents

Publication Publication Date Title
US9293925B2 (en) Charging and power supplying circuit, method and application device
US9648677B2 (en) LED driving circuit and method using single inductor
US20090167279A1 (en) DC Power Converter and Mode-Switching Method
CN107422776A (en) Low difference voltage regulator
US9769889B2 (en) Driving circuit for flash light-emitting diode and operating method thereof
US9615415B2 (en) LED driving circuit and method using single inductor
RU2015135886A (en) POWER SUPPLY AND METHOD FOR POWER SUPPLY
US9385615B2 (en) Isolated switching power supply
EP3780367A8 (en) Neutral-less power supply with buck converter
WO2019096715A1 (en) Switched mode power converter and conversion method
JP6011011B2 (en) Lighting device, lighting device, and dimming method
US20200373843A1 (en) Power supply device
KR102095064B1 (en) Circuit for driving power switch, power supply apparatus and method for driving power switch
US20110040988A1 (en) Single phase line switch
EP3016478B1 (en) Joint control of output power in a multichannel LED driver
US20170054440A1 (en) Power supply apparatus and control method thereof
US20210021196A1 (en) Insulated power supply circuit
KR20160011894A (en) Direct power supply system
TWI535165B (en) Power supplying device having over-voltage protection
US9917516B2 (en) DC-DC converter with input voltage responsive lookup table control
CN108811235B (en) Supply circuit for supplying an LED with a primary DC voltage
US9742282B2 (en) Switching power voltage regulator for regulating electric energy to load
JP6352733B2 (en) Power supply circuit and control method thereof
CN105706349A (en) Device and method for providing regulated current to an electrical load
WO2022151305A1 (en) Power supply circuit, controlling method, lighting device driver and lighting equipment

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment