CN110855135B - Input surge suppression control circuit based on digital chip control - Google Patents
Input surge suppression control circuit based on digital chip control Download PDFInfo
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- CN110855135B CN110855135B CN201911148934.9A CN201911148934A CN110855135B CN 110855135 B CN110855135 B CN 110855135B CN 201911148934 A CN201911148934 A CN 201911148934A CN 110855135 B CN110855135 B CN 110855135B
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- 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
- 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
- H02M3/157—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 with digital control
-
- 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
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
Abstract
The invention discloses an input surge suppression control circuit based on digital chip control, which comprises: the circuit comprises a control chip, a driver, a voltage doubling rectifying circuit, a capacitor C1, a capacitor C3, a coupling inductor L2 and a resistor R1; the circuit is based on BUCK topology, in a conventional diode freewheeling BUCK circuit, a switching tube driving signal needs to be driven by a separate driver, and the driver supplies power to an auxiliary source which is not in common with a control chip.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to an input surge suppression control circuit based on digital chip control.
Background
In the conventional BUCK voltage reduction circuit, a high-end power tube driving circuit has two modes, one mode is used for automatically supplying power to a bootstrap circuit, the power supply mode is limited by a duty ratio, the voltage reduction control of low voltage difference cannot be realized, and when the high-end power tube driving circuit is used as a surge suppression circuit, the input and output of a power tube cannot be directly connected; the other is an external independent power supply mode, which needs to separately provide an auxiliary source power supply for the high-side driving circuit, wherein the auxiliary source power supply is completely isolated from the control chip, and although the high-side power tube can be directly connected, the auxiliary source circuit occupies a large PCB space.
Disclosure of Invention
The invention aims to provide an input surge suppression control circuit based on digital chip control, which does not need to be supplied with power independently, omits an independent auxiliary source circuit and can further simplify the whole circuit.
In order to achieve the above object, the present invention provides an input surge suppression control circuit based on digital chip control, wherein the control circuit comprises:
the circuit comprises a control chip, a driver, a voltage doubling rectifying circuit, a capacitor C1, a capacitor C3, a coupling inductor L2 and a resistor R1;
the control chip outputs a PWM1 signal to an HI end of the driver, the control chip outputs a PWM2 signal to an LI end of the driver, one end of a resistor R1 is connected with a VCC end, the other end of a resistor R1 is connected with a VDD end of the driver and one end of a capacitor C1, an HO end of the driver is connected with a base of a triode Q1, a collector of the triode Q1 is connected with an input end, an emitter of the triode Q1 is connected with one end of an inductor L1, the other end of the inductor L1 is connected with an output end, an HB end of the driver is connected with a voltage doubling rectifying circuit, an HS end of the driver is connected with one end of an inductor L1, an LO end of the driver is connected with one end of a primary winding of a coupling inductor L2, the other end of a primary winding of a coupling inductor L2 is connected with one end of a capacitor C3, one end of a secondary winding of a coupling inductor L2 is connected with a voltage doubling rectifying circuit, one end of a secondary winding, The VSS terminal of the driver and the other terminal of the capacitor C3 are both grounded.
The control circuit is based on a BUCK topology and comprises an MCU, a driver, a diode and a coupling inductor. In the conventional diode freewheeling BUCK circuit, a switching tube driving signal needs a separate driver for driving, and the driver supplies power for independently supplying power for an auxiliary source which is not in common with a control chip.
Preferably, the voltage doubler rectifier circuit includes: the diode D1, the diode D2, the capacitor C2 and the capacitor C4 are arranged, the cathode of the diode D1 and one end of the capacitor C4 are all connected with the HB end of the driver, the anode of the diode D1 and one end of the capacitor C2 are all connected with the cathode of the diode D2, the other end of the capacitor C2 is connected with one end of the secondary winding of the coupling inductor L2, and the other end of the capacitor C4 is connected with the anode of the diode D2, the other end of the secondary winding of the coupling inductor L2, the HS end of the driver and one end of the inductor L1.
Preferably, the control circuit further comprises a diode D3, the anode of the diode D3 is grounded, the cathode of the diode D3 is connected with the other end of the capacitor C4, the anode of the diode D2, the HS end of the driver, the other end of the secondary winding of the coupling inductor L2 and one end of the inductor L1, and the anode of the cathode of the diode D3 is grounded.
Preferably, the control circuit further comprises a capacitor C5, one end of the capacitor C5 is connected to the other end of the inductor L1, and the other end of the capacitor C5 is grounded.
Preferably, the control chip sends two groups of independent PWM signals to the driver, wherein the PWM2 is always a fixed duty cycle, and the duty cycle of the PWM1 is gradually increased from 0% to 100%; PWM2 is output by driver LO after level conversion is realized by driver and driving capability is increased, when driving voltage is applied to two ends of primary winding of coupling inductor L2, coupling inductor L2 couples the driving voltage to two ends of secondary winding for output, after voltage-multiplying rectification and filtering are carried out on output end of coupling inductor L2 by voltage-multiplying rectification circuit, high-end driving independent power supply is realized, and driving signal with same duty ratio as PWM1 is realized at driver HO end.
Preferably, the control chip is a digital power supply chip.
One or more technical schemes provided by the invention at least have the following technical effects or advantages:
the invention does not need to supply power independently, saves an independent auxiliary source circuit and can further simplify the whole circuit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;
fig. 1 is a schematic diagram of the input surge suppression control circuit based on digital chip control in the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1, an embodiment of the present invention provides an input surge suppression control circuit based on digital chip control, where the control circuit includes:
the circuit comprises a control chip, a driver, a voltage doubling rectifying circuit, a capacitor C1, a capacitor C3, a coupling inductor L2 and a resistor R1;
the control chip outputs a PWM1 signal to an HI end of the driver, the control chip outputs a PWM2 signal to an LI end of the driver, one end of a resistor R1 is connected with a VCC end, the other end of a resistor R1 is connected with a VDD end of the driver and one end of a capacitor C1, an HO end of the driver is connected with a base of a triode Q1, a collector of the triode Q1 is connected with an input end, an emitter of the triode Q1 is connected with one end of an inductor L1, the other end of the inductor L1 is connected with an output end, an HB end of the driver is connected with a voltage doubling rectifying circuit, an HS end of the driver is connected with one end of an inductor L1, an LO end of the driver is connected with one end of a primary winding of a coupling inductor L2, the other end of a primary winding of a coupling inductor L2 is connected with one end of a capacitor C3, one end of a secondary winding of a coupling inductor L2 is connected with a voltage doubling rectifying circuit, one end of a secondary winding, The VSS terminal of the driver and the other terminal of the capacitor C3 are both grounded.
In an embodiment of the present invention, a voltage doubler rectifier circuit includes: the diode D1, the diode D2, the capacitor C2 and the capacitor C4 are arranged, the cathode of the diode D1 and one end of the capacitor C4 are all connected with the HB end of the driver, the anode of the diode D1 and one end of the capacitor C2 are all connected with the cathode of the diode D2, the other end of the capacitor C2 is connected with one end of the secondary winding of the coupling inductor L2, and the other end of the capacitor C4 is connected with the anode of the diode D2, the other end of the secondary winding of the coupling inductor L2, the HS end of the driver and one end of the inductor L1.
In the embodiment of the present invention, the control circuit further includes a diode D3, the anode of the diode D3 is grounded, the cathode of the diode D3 is connected to the other end of the capacitor C4, the anode of the diode D2, the HS end of the driver, the other end of the secondary winding of the coupling inductor L2, and one end of the inductor L1, and the anode of the cathode of the diode D3 is grounded.
In the embodiment of the present invention, the control circuit further includes a capacitor C5, one end of the capacitor C5 is connected to the other end of the inductor L1, and the other end of the capacitor C5 is grounded.
The model of the control chip is UCD3138ARJAT or series chips with the same function, and the model of the driver is UCC27211ADRM or chips with the same function. The circuit is based on a BUCK topology and comprises an MCU, a driver, a diode and a coupling inductor. The invention comprises an input surge suppression control circuit based on digital chip control, which uses a micro coupling transformer and combines a microcontroller to realize the control of gradually converting a high-end power tube from a cut-off state to a through state. The design uses a digital power chip as a control chip which sends out two groups of independent PWM signals to be transmitted to a driver, wherein the PWM2 is always a fixed duty ratio, and the duty ratio of the PWM1 is increased from 0% to 100% step by step. PWM2 is output by LO after level conversion is realized and driving capability is increased through a driver chip, when driving voltage is applied to two ends of L2, L2 couples the driving voltage to output pins 3 and 4, a voltage-multiplying rectification circuit is formed by D2, D1, C2 and C4 at the output end of the L2, high-end driving independent power supply is realized after voltage-multiplying rectification and filtering, and HO realizes a driving signal with the same duty ratio as PWM 1.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. An input surge suppression control circuit based on digital chip control, the control circuit comprising:
the circuit comprises a control chip, a driver, a voltage doubling rectifying circuit, a capacitor C1, a capacitor C3, a coupling inductor L2 and a resistor R1;
the control chip outputs a PWM1 signal to an HI end of the driver, the control chip outputs a PWM2 signal to an LI end of the driver, one end of a resistor R1 is connected with a VCC end, the other end of a resistor R1 is connected with a VDD end of the driver and one end of a capacitor C1, an HO end of the driver is connected with a base of a triode Q1, a collector of the triode Q1 is connected with an input end, an emitter of the triode Q1 is connected with one end of an inductor L1, the other end of the inductor L1 is connected with an output end, an HB end of the driver is connected with a voltage doubling rectifying circuit, an HS end of the driver is connected with one end of an inductor L1, an LO end of the driver is connected with one end of a primary winding of a coupling inductor L2, the other end of a primary winding of a coupling inductor L2 is connected with one end of a capacitor C3, one end of a secondary winding of a coupling inductor L2 is connected with a voltage doubling rectifying circuit, the other end of a secondary, The VSS end of the driver and the other end of the capacitor C3 are both grounded; the model type of the drive includes UCC27211 ADRM.
2. The digital chip control-based input surge suppression control circuit according to claim 1, wherein the voltage doubling rectifying circuit comprises: the diode D1, the diode D2, the capacitor C2 and the capacitor C4 are arranged, the cathode of the diode D1 and one end of the capacitor C4 are all connected with the HB end of the driver, the anode of the diode D1 and one end of the capacitor C2 are all connected with the cathode of the diode D2, the other end of the capacitor C2 is connected with one end of the secondary winding of the coupling inductor L2, and the other end of the capacitor C4 is connected with the anode of the diode D2, the other end of the secondary winding of the coupling inductor L2, the HS end of the driver and one end of the inductor L1.
3. The input surge suppression control circuit based on digital chip control according to claim 2, wherein the control circuit further comprises a diode D3, the anode of the diode D3 is grounded, and the cathode of the diode D3 is connected to the other end of the capacitor C4, the anode of the diode D2, the HS terminal of the driver, the other end of the secondary winding of the coupling inductor L2, and one end of the inductor L1.
4. The digital chip control-based input surge suppression control circuit according to claim 1, wherein the control circuit further comprises a capacitor C5, one end of the capacitor C5 is connected to the other end of the inductor L1, and the other end of the capacitor C5 is grounded.
5. The digital chip control-based input surge suppression control circuit according to claim 1, wherein the control chip sends two independent sets of PWM signals to the driver, wherein the PWM2 is always a fixed duty cycle, and the PWM1 duty cycle is increased from 0% to 100%; PWM2 is output by driver LO after level conversion is realized by driver and driving capability is increased, when driving voltage is applied to two ends of primary winding of coupling inductor L2, coupling inductor L2 couples the driving voltage to two ends of secondary winding for output, after voltage-multiplying rectification and filtering are carried out on output end of coupling inductor L2 by voltage-multiplying rectification circuit, high-end driving independent power supply is realized, and driving signal with same duty ratio as PWM1 is realized at driver HO end.
6. The digital chip control-based input surge suppression control circuit according to claim 1, wherein the control chip is a digital power supply chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148934.9A CN110855135B (en) | 2019-11-21 | 2019-11-21 | Input surge suppression control circuit based on digital chip control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148934.9A CN110855135B (en) | 2019-11-21 | 2019-11-21 | Input surge suppression control circuit based on digital chip control |
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| CN110855135A CN110855135A (en) | 2020-02-28 |
| CN110855135B true CN110855135B (en) | 2020-10-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206775387U (en) * | 2017-03-30 | 2017-12-19 | 安徽中电兴发与鑫龙科技股份有限公司 | A kind of reduction voltage circuit |
| US10340802B1 (en) * | 2018-06-29 | 2019-07-02 | Power Forest Technology Corporation | Power conversion apparatus with low power consumption and low cost |
| CN110112722A (en) * | 2019-06-04 | 2019-08-09 | 安徽华东光电技术研究所有限公司 | Surge suppression modules and preparation method thereof |
-
2019
- 2019-11-21 CN CN201911148934.9A patent/CN110855135B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206775387U (en) * | 2017-03-30 | 2017-12-19 | 安徽中电兴发与鑫龙科技股份有限公司 | A kind of reduction voltage circuit |
| US10340802B1 (en) * | 2018-06-29 | 2019-07-02 | Power Forest Technology Corporation | Power conversion apparatus with low power consumption and low cost |
| CN110112722A (en) * | 2019-06-04 | 2019-08-09 | 安徽华东光电技术研究所有限公司 | Surge suppression modules and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| UCC27211A 120-V Boot,4-A Peak,High-Frequency High-Side and Low-Side Driver;德州仪器半导体技术有限公司;《www.ti.com》;20151231;第1-30页 * |
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