[go: up one dir, main page]

WO2018134839A1 - A self-driven current regulator - Google Patents

A self-driven current regulator Download PDF

Info

Publication number
WO2018134839A1
WO2018134839A1 PCT/IN2017/050596 IN2017050596W WO2018134839A1 WO 2018134839 A1 WO2018134839 A1 WO 2018134839A1 IN 2017050596 W IN2017050596 W IN 2017050596W WO 2018134839 A1 WO2018134839 A1 WO 2018134839A1
Authority
WO
WIPO (PCT)
Prior art keywords
current regulator
laim
regulator according
current
filter
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IN2017/050596
Other languages
French (fr)
Inventor
Bhoopendrakumar SINGH
Rayees K E
Sudeep E
Vinod CHIPPALKATTI
Kanthimathinathan T
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centum Electronics Ltd
Original Assignee
Centum Electronics Ltd
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 Centum Electronics Ltd filed Critical Centum Electronics Ltd
Publication of WO2018134839A1 publication Critical patent/WO2018134839A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/16—Modifications for eliminating interference voltages or currents
    • H03K17/161—Modifications for eliminating interference voltages or currents in field-effect transistor switches
    • H03K17/165—Modifications for eliminating interference voltages or currents in field-effect transistor switches by feedback from the output circuit to the control circuit
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters

Definitions

  • the invention generally relates to the field of current limiters and particularly to a self-driven current regulator.
  • An inrush current limiter is a component used to limit inrush current to avoid gradual damage to components.
  • the inrush current limiter reduces electromagnetic interference due to current and voltage spikes.
  • One of the systems provides a circuit and method for controlling when a load may be fully energized.
  • the method includes directing electrical current through a current limiting resistor that has a first terminal connected to a source terminal of a field effect transistor F E T, and a second terminal connected to a drain terminal of the F E T.
  • the gate voltage magnitude on a gate terminal of the F ET is varied, whereby current flow through the F E T is increased while current flow through the current limiting resistor is simultaneously decreased.
  • a determination is made as to when the gate voltage magnitude on the gate terminal is equal to or exceeds a predetermined reference voltage magnitude, and the load is enabled to be fully energized when the gate voltage magnitude is equal to or exceeds the predetermined reference voltage magnitude.
  • the disadvantage is that the output is dependent on the load.
  • Another system known in the art uses a NTC Thermistor.
  • the NTC Thermistor requires high cool-down/recovery time. The system does not provide effective inrush current limiting at higher temperature.
  • FIG .1 shows a block diagram of a self-driven current regulator, according to an embodiment of the invention.
  • FIG .2 shows schematic representation of the self-driven current regulator, according to an embodiment of the invention.
  • the self-driven current regulator includes an input circuitry configured to receive an input voltage from a voltage source, an output circuitry configured to supply an output voltage and a current limiter arrangement operably coupled between the input circuitry and the output circuitry.
  • the self-driven current regulator includes an input circuitry configured to receive an input voltage from a voltage source, an output circuitry configured to supply an output voltage and a current limiter arrangement operably coupled between the input circuitry and the output circuitry.
  • FIG .1 shows a block diagram of a self-driven current regulator, according to an embodiment of the invention.
  • the current regulator includes an input 101 configured to receive an input voltage from a voltage source.
  • the input 101 includes an interference circuit
  • the interference circuit is enabled to reduce the electromagnetic interference.
  • the interference circuit includes a plurality of capacitors connected across the input.
  • the input 101 further includes an input voltage sensing circuit that is enabled to monitor the voltage within a desired level.
  • the input voltage sensing circuit includes a switching component and a plurality of passive components. Examples of the switching component include but are not limited to a transistor, a MOS F ET, a BJ T, an IG BT, and/or combinations thereof. In one example of the invention, the switching component is a transistor.
  • E xamples of passive components include but are not limited to a resistor, a capacitor, an inductor, a diode and/or combinations thereof. In one example of the invention, the passive components are at least one combination of the resistor and the diode.
  • the current regulator includes an output 105 configured to supply an output voltage.
  • the output includes a filter circuit. Examples of filter circuit include but are not limited to a capacitive filter, a R C filter, a LC filter, a R LC filter or a combination thereof. In one example of the invention, the filter is capacitive filter.
  • a current limiter arrangement 103 is operably connected in between the input 101 and the output 105.
  • the current limiting arrangement 103 includes a pull down circuit.
  • the pull down circuit includes a switching component.
  • E xamples of the switching component include but are not limited to a transistor, a MOS F ET, a BJ T, an IG BT, and/or combinations thereof.
  • the switching component is transistor.
  • the pull down circuit includes a plurality of passive components.
  • E xamples of passive components include but are not limited to a resistor, a capacitor, an inductor, a diode and/or combinations thereof.
  • the passive components are at least one combination of the resistor and the diode.
  • the current limiting arrangement 103 includes an inrush current limiter.
  • the inrush current limiter includes a R C Time constant. The RC time constant enables the linear rising of the voltage.
  • the inrush current limiter further includes a switching component.
  • the switching component include but are not limited to a transistor, a MOS F E T, a BJ T, an IG BT, S C R and/or combinations thereof.
  • the switching component is a MOS F E T.
  • the inrush current limiter includes a plurality of passive components. Examples of passive components include but are not limited to a resistor, a capacitor, an inductor, a diode and/or combinations thereof. In one example of the invention, the passive components are at least one combination of the resistor and the diode.
  • the current regulator is independent of load.
  • the circuit operates in two modes:
  • Mode 1 As the power is turned on, there is an inrush current spike.
  • the inrush current flows through the interference filter.
  • the interference filter capacitors acts as a short during the initial turn on of the power. There is rise in dv/dt for a short duration.
  • the voltage level is set by the transistor and the diode of the input voltage sensing circuit. When the voltage drop is more than the desired level across the resistor, the transistor of the pull down circuit gets triggered and turned on.
  • the gate voltage of the MOS F E T is pulled down and the inrush current is limited through series resistor.
  • the MOS F E T gets triggered by the pull down circuit pulse.
  • the output is taken out from the output circuitry filter.
  • the interference filter capacitor is charged slightly higher than the level set by the voltage sensing circuit.
  • the gate voltage rises linearly through the R C constant.
  • the MOS F E T is switched
  • the output is taken out from the output circuitry filter with inrush current suppression.
  • the invention provides a self-driven current regulator that is independent of load.
  • the self-driven current regulator as described herein and as illustrated through the accompanying drawings can be used to reduce unwanted E MI noise due to current and voltage spikes.
  • the invention provides continuous plug-in inrush current limiting during the frequent ON/OF F of the input bus.

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention provides a self-driven current regulator. The self- driven current regulator includes an input circuitry configured to receive an input voltage from a voltage source, an output circuitry configured to supply an output voltage and a current limiter arrangement operably coupled between the input circuitry and the output circuitry.

Description

A S E L F-DRIVE N C U R R E NT R E G U LATOR
FIE L D OF INVE NTION
The invention generally relates to the field of current limiters and particularly to a self-driven current regulator.
BAC KG R OU ND
An inrush current limiter is a component used to limit inrush current to avoid gradual damage to components. The inrush current limiter reduces electromagnetic interference due to current and voltage spikes. There are systems known in the art that provides current limiters.
One of the systems provides a circuit and method for controlling when a load may be fully energized. The method includes directing electrical current through a current limiting resistor that has a first terminal connected to a source terminal of a field effect transistor F E T, and a second terminal connected to a drain terminal of the F E T. The gate voltage magnitude on a gate terminal of the F ET is varied, whereby current flow through the F E T is increased while current flow through the current limiting resistor is simultaneously decreased. A determination is made as to when the gate voltage magnitude on the gate terminal is equal to or exceeds a predetermined reference voltage magnitude, and the load is enabled to be fully energized when the gate voltage magnitude is equal to or exceeds the predetermined reference voltage magnitude. The disadvantage is that the output is dependent on the load. Another system known in the art uses a NTC Thermistor. The NTC Thermistor requires high cool-down/recovery time. The system does not provide effective inrush current limiting at higher temperature.
B RIE F D E S C RIPTIO N O F DRAWINGS
S o that the manner in which the recited features of the invention can be understood in detail, some of the embodiments are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.
FIG .1 shows a block diagram of a self-driven current regulator, according to an embodiment of the invention.
FIG .2 shows schematic representation of the self-driven current regulator, according to an embodiment of the invention.
S U MMARY O F TH E INVE NTION
One aspect of the invention provides aself-driven current regulator. The self-driven current regulator includes an input circuitry configured to receive an input voltage from a voltage source, an output circuitry configured to supply an output voltage and a current limiter arrangement operably coupled between the input circuitry and the output circuitry.
DETAIL E D DE S C RIPTION O F TH E INVE NTIO N
Various embodiments of the invention provide a self-driven current regulator. The self-driven current regulator includes an input circuitry configured to receive an input voltage from a voltage source, an output circuitry configured to supply an output voltage and a current limiter arrangement operably coupled between the input circuitry and the output circuitry. The self- driven current regulator described herein briefly can be explained in detail.
FIG .1 shows a block diagram of a self-driven current regulator, according to an embodiment of the invention. The current regulator includes an input 101 configured to receive an input voltage from a voltage source. The input 101 includes an interference circuit The interference circuit is enabled to reduce the electromagnetic interference. In one example of the invention, the interference circuit includes a plurality of capacitors connected across the input. The input 101 further includes an input voltage sensing circuit that is enabled to monitor the voltage within a desired level. The input voltage sensing circuit includes a switching component and a plurality of passive components. Examples of the switching component include but are not limited to a transistor, a MOS F ET, a BJ T, an IG BT, and/or combinations thereof. In one example of the invention, the switching component is a transistor. E xamples of passive components include but are not limited to a resistor, a capacitor, an inductor, a diode and/or combinations thereof. In one example of the invention, the passive components are at least one combination of the resistor and the diode. The current regulator includes an output 105 configured to supply an output voltage. The output includes a filter circuit. Examples of filter circuit include but are not limited to a capacitive filter, a R C filter, a LC filter, a R LC filter or a combination thereof. In one example of the invention, the filter is capacitive filter. A current limiter arrangement 103 is operably connected in between the input 101 and the output 105. The current limiting arrangement 103 includes a pull down circuit. The pull down circuit includes a switching component. E xamples of the switching component include but are not limited to a transistor, a MOS F ET, a BJ T, an IG BT, and/or combinations thereof. In one example of the invention, the switching component is transistor. The pull down circuit includes a plurality of passive components. E xamples of passive components include but are not limited to a resistor, a capacitor, an inductor, a diode and/or combinations thereof. In one example of the invention, the passive components are at least one combination of the resistor and the diode. F urther, the current limiting arrangement 103 includes an inrush current limiter. The inrush current limiter includes a R C Time constant. The RC time constant enables the linear rising of the voltage. The inrush current limiter further includes a switching component. E xamples of the switching component include but are not limited to a transistor, a MOS F E T, a BJ T, an IG BT, S C R and/or combinations thereof. In one example of the invention, the switching component is a MOS F E T. The inrush current limiter includes a plurality of passive components. Examples of passive components include but are not limited to a resistor, a capacitor, an inductor, a diode and/or combinations thereof. In one example of the invention, the passive components are at least one combination of the resistor and the diode. The current regulator is independent of load.
Working of the circuit:
The circuit operates in two modes:
Mode 1 : As the power is turned on, there is an inrush current spike. The inrush current flows through the interference filter. The interference filter capacitors acts as a short during the initial turn on of the power. There is rise in dv/dt for a short duration. The voltage level is set by the transistor and the diode of the input voltage sensing circuit. When the voltage drop is more than the desired level across the resistor, the transistor of the pull down circuit gets triggered and turned on. The gate voltage of the MOS F E T is pulled down and the inrush current is limited through series resistor. The MOS F E T gets triggered by the pull down circuit pulse. The output is taken out from the output circuitry filter.
Mode 2:
The interference filter capacitor is charged slightly higher than the level set by the voltage sensing circuit. The gate voltage rises linearly through the R C constant. The MOS F E T is switched
ON in a linear mode to charge the capacitive filter at the output.
The output is taken out from the output circuitry filter with inrush current suppression.
Thus, the invention provides a self-driven current regulator that is independent of load. The self-driven current regulator as described herein and as illustrated through the accompanying drawings can be used to reduce unwanted E MI noise due to current and voltage spikes. F urther, the invention provides continuous plug-in inrush current limiting during the frequent ON/OF F of the input bus.
The foregoing description of the invention has been set merely to illustrate the invention and is not intended to be limiting. S ince modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to person skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.

Claims

We c laim:
1. A self-driven current regulator, comprising:
an input circuitry configured to receive an input voltage from a voltage source;
an output circuitry configured to supply an output voltage; and
a current limiter arrangement operably coupled between the input circuitry and the output circuitry.
2. The current regulator according to C laim 1 , wherein the input circuitry comprises of an interference circuit and an input voltage sensing circuit
3. The current regulator according to C laim 2, wherein the interference circuit is configured for reducing the electromagnetic interference.
4. The current regulator according to C laim 2, wherein the voltage sensing circuit comprises of:
a switching component; and
a plurality of passive components.
5. The current regulator according to C laim 4, wherein the switching component is selected from a group comprising of a Transistor, a MOS F E T, a BJ T, an IG BT, a S C R and/or combinations thereof.
6. The current regulator according to C laim 4, wherein the passive component is selected from a group comprising of a resistor, a capacitor, an inductor, a diode and/or combinations thereof.
7. The current regulator according to C laim 1 , wherein the output circuitry comprises of a filter, wherein the filter is at least one selected from a group comprising of a capacitive filter, a R C filter, a LC filter, a R LC filter or a combination thereof.
8. The current regulator according to C laim 1 , wherein the current limiter arrangement comprises of:
a pull down circuit; and
an inrush current limiter.
9. The current regulator according to C laim 8, wherein the pull down circuit comprises of:
a switching component; and
a plurality of passive components.
10. The current regulator according to C laim 9, wherein the switching component is selected from a group comprising of a Transistor, a MOS F E T, a BJ T, an IG BT, a S C R and/or combinations thereof.
1 1. The current regulator according to C laim 9, wherein the passive component is selected from a group comprising of a resistor, a capacitor, a diode, an inductor, and or a combination thereof.
12. The current regulator according to C laim 8, wherein the inrush current limiter comprises of
a R C time constant
a switching component; and
a plurality of passive components.
13. The current regulator according to C laim 12, a R C time constant is configured for linear rising of voltage.
14. The current regulator according to C laim 12, the switching component is selected from a group comprising of a
MOS F E T, a BJ T, an IG BT, a S C R and/or combinations thereof.
15. The current regulator according to C laim 12, wherein the passive component is selected from a group comprising of a resistor, a capacitor, an inductor, a diode and or a combination thereof.
16. The current regulator according to C laim 1 , wherein the self-driven current regulator is independent of load.
PCT/IN2017/050596 2017-01-17 2017-12-15 A self-driven current regulator Ceased WO2018134839A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201741001736 2017-01-17
IN201741001736 2017-01-17

Publications (1)

Publication Number Publication Date
WO2018134839A1 true WO2018134839A1 (en) 2018-07-26

Family

ID=62908445

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2017/050596 Ceased WO2018134839A1 (en) 2017-01-17 2017-12-15 A self-driven current regulator

Country Status (1)

Country Link
WO (1) WO2018134839A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050088157A1 (en) * 2003-10-24 2005-04-28 Rupert Benzinger Electrical circuit for limiting switching-on current
US20070127177A1 (en) * 2005-12-02 2007-06-07 Andrew Benton System and method for conditioning a power supply transmission for supply to a load circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050088157A1 (en) * 2003-10-24 2005-04-28 Rupert Benzinger Electrical circuit for limiting switching-on current
US20070127177A1 (en) * 2005-12-02 2007-06-07 Andrew Benton System and method for conditioning a power supply transmission for supply to a load circuit

Similar Documents

Publication Publication Date Title
US9954353B2 (en) Self turn-on and turn-off pre-charge circuit to limit bulk capacitor inrush current
US4667121A (en) Integrated circuit speed controller
EP2315354B1 (en) Semiconductor device
EP3007360B1 (en) Over-voltage protection circuit for a drive transistor
US8994220B2 (en) Vehicle-mounted electronic control device
US8972158B2 (en) Semiconductor device providing a current control function and a self shut down function
JP2019110486A (en) Semiconductor device current detection circuit and current detection method
US20170093145A1 (en) Semiconductor device
US10103539B2 (en) Semiconductor device and current limiting method
JP6596948B2 (en) Semiconductor device
CN107769554B (en) Control circuit of switching power supply device and switching power supply device
CN104617933B (en) Circuit for reducing power consumption of power stage and method thereof
US20060152874A1 (en) DC/DC converter with current limit protection
US4547828A (en) Circuit for preventing excessive power dissipation in power switching semiconductors
US6738245B2 (en) Series-pass over-voltage protection circuit having multiple transistors in parallel
US20170179811A1 (en) Electronic circuit and method for operating an electronic circuit
US20040189096A1 (en) Auxiliary power source and method for operating the auxiliary power source, as well as circuit arrangement for switching a load
EP1817838B1 (en) Device and method for charging an electrical energy accumulator device
US10622991B2 (en) Switch driver
WO2018134839A1 (en) A self-driven current regulator
CN108683416B (en) Load switch control circuit
JP2006050776A (en) Semiconductor switch circuit, power conversion device, inverter device and air conditioner
US10594317B1 (en) Bleeding switching regulator power rail through switching regulator ground side switch
US20190222137A1 (en) Bulk capacitor inrush current limiting circuit
JP2015050816A (en) Electric load drive

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17892676

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17892676

Country of ref document: EP

Kind code of ref document: A1