CN219394690U - Multi-mode control circuit of ultra-wide output voltage - Google Patents

Multi-mode control circuit of ultra-wide output voltage Download PDF

Info

Publication number
CN219394690U
CN219394690U CN202320365557.XU CN202320365557U CN219394690U CN 219394690 U CN219394690 U CN 219394690U CN 202320365557 U CN202320365557 U CN 202320365557U CN 219394690 U CN219394690 U CN 219394690U
Authority
CN
China
Prior art keywords
module
circuit
pfc
control circuit
output
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.)
Active
Application number
CN202320365557.XU
Other languages
Chinese (zh)
Inventor
梁加开
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.)
Meispu Electronics Co ltd
Original Assignee
Meispu Electronics Co 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 Meispu Electronics Co ltd filed Critical Meispu Electronics Co ltd
Priority to CN202320365557.XU priority Critical patent/CN219394690U/en
Application granted granted Critical
Publication of CN219394690U publication Critical patent/CN219394690U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Dc-Dc Converters (AREA)

Abstract

The utility model relates to the technical field of power supply circuits, in particular to an ultra-wide output voltage multi-mode control circuit which comprises an input port, an output port, a PFC circuit, a DCDC conversion circuit, an MCU control circuit, a voltage detection circuit and a current detection circuit; the input end of the PFC circuit is connected with the input port; the output end of the PFC circuit is connected with the input end of the DCDC conversion circuit; the output end of the DCDC conversion circuit is connected with the output port; the output port is connected with the MCU control circuit after passing through the voltage detection circuit and the current detection circuit respectively; the MCU control circuit is used for controlling the PFC circuit and the DCDC conversion circuit. According to the utility model, the MCU control circuit adjusts the PFC circuit to adjust the output voltage of the PFC circuit according to the output voltage and the output current of the circuit by detecting the voltage and the current of the output port, and controls the DCDC conversion circuit part, so that the ultra-wide range voltage output is completed.

Description

Multi-mode control circuit of ultra-wide output voltage
Technical Field
The utility model relates to the technical field of power supply circuits, in particular to a multi-mode control circuit with ultra-wide output voltage.
Background
Most of power supply topologies in the market generally have output ranges of 1-2 times, such as half-bridge LLC, forward drive, half-bridge hard switch and other power supply topologies; part of power supply topologies can realize a wider output range, and the other part of power supply topologies are like a conventional Flyback power supply topology, a QR Flyback power supply topology and the like, but the efficiency is lower because a main switching tube is a hard switch when the main switching tube is switched on; the other part is flyback of soft switching type, such as ACF power supply topology and AHBFC power supply topology, because the main switching tube and the auxiliary switching tube can realize soft switching to realize high efficiency, but the output range of the power supply topology is not wide enough and is approximately 3-7 times, a control mode capable of realizing more than 10 times of output voltage range is needed to be designed.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a multi-mode control circuit with ultra-wide output voltage.
The aim of the utility model is achieved by the following technical scheme: a multi-mode control circuit of ultra-wide output voltage comprises an input port, an output port, a PFC circuit, a DCDC conversion circuit, an MCU control circuit, a voltage detection circuit and a current detection circuit;
the input end of the PFC circuit is connected with the input port; the output end of the PFC circuit is connected with the input end of the DCDC conversion circuit; the output end of the DCDC conversion circuit is connected with the output port; the output port is connected with the MCU control circuit after passing through the voltage detection circuit and the current detection circuit respectively;
the MCU control circuit is used for controlling the PFC circuit and the DCDC conversion circuit.
The PFC circuit further comprises an EMC filtering module, an input rectifying module, a PFC adjusting module, a PFC receiving module and a PFC output port;
the input port is connected with the input end of the EMC filtering module; the output end of the EMC filtering module is connected with the input end of the input rectifying module; the output end of the input rectifying module is connected with the PFC output port; the PFC adjusting module is electrically connected with the PFC receiving module; the PFC receiving module is electrically connected with the MCU control circuit; the PFC adjusting module and the PFC receiving module are respectively connected with the PFC output port.
The utility model is further configured that the PFC receiving module includes an optocoupler receiver PC102B; the MCU control circuit includes an optocoupler transmitter PC102A.
The utility model is further arranged that the DCDC conversion circuit comprises an asymmetric half-bridge flyback regulation module, a transformer T1, an output rectification module and an asymmetric half-bridge flyback control module;
one end of the primary side of the transformer T1 is connected with the output end of the PFC circuit; the other end of the primary side of the transformer T1 is connected with an asymmetric half-bridge flyback regulation module; the asymmetric half-bridge flyback regulation module is electrically connected with the asymmetric half-bridge flyback control module; the asymmetric half-bridge flyback control module is electrically connected with the MCU control circuit; the secondary side of the transformer T1 is connected with an output port through an output rectifying module.
The utility model is further arranged that the current detection circuit comprises a differential amplification module, a current control feedback loop and a detection output module; the current control feedback loop is connected with the MCU control circuit; the input end of the differential amplification module is connected with the output port; the output end of the differential amplification module and the current control feedback loop are respectively connected with the MCU control circuit through the detection output module.
The utility model is further arranged that the current detection circuit further comprises a voltage control feedback loop; the voltage control feedback loop is connected with the MCU control circuit; the voltage control feedback loop is connected with the detection output module.
The utility model is further arranged that the multi-mode control circuit of the ultra-wide output voltage further comprises a battery connected with the output port; an anti-reverse-filling module is arranged between the battery and the input end of the differential amplification module; the anti-reverse irrigation module is electrically connected with the MCU control circuit.
The utility model is further arranged that the multi-mode control circuit of the ultra-wide output voltage further comprises a battery electric quantity detection module connected with the battery; the battery electric quantity detection module is electrically connected with the MCU control circuit.
The utility model has the beneficial effects that: according to the utility model, the MCU control circuit adjusts the PFC circuit to adjust the output voltage of the PFC circuit according to the output voltage and the output current of the circuit by detecting the voltage and the current of the output port, and controls the DCDC conversion circuit part, so that the ultra-wide range voltage output is completed.
Drawings
The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
FIG. 1 is a schematic circuit diagram of the present utility model;
FIG. 2 is a circuit diagram of the MCU control circuit of the present utility model;
fig. 3 is a circuit diagram of the PFC circuit of the present utility model;
fig. 4 is a circuit diagram of the DCDC conversion circuit of the present utility model;
FIG. 5 is a circuit diagram of an asymmetric half-bridge flyback control module of the present utility model;
FIG. 6 is a circuit diagram of a current sense circuit of the present utility model;
FIG. 7 is a circuit diagram of a voltage detection circuit of the present utility model;
FIG. 8 is a circuit diagram of a battery charge detection module of the present utility model;
wherein: 11. an input port; 12. an output port; 21. an EMC filtering module; 22. inputting a rectifying module; 23. a PFC adjustment module; 24. a PFC receiving module; 25. a PFC output port; 31. an asymmetric half-bridge flyback regulation module; 32. an output rectifying module; 41. a differential amplification module; 42. a current control feedback loop; 43. a detection output module; 44. a voltage control feedback loop; 5. and a reverse irrigation prevention module.
Detailed Description
The utility model will be further described with reference to the following examples.
As can be seen from fig. 1 to 8, the multi-mode control circuit for ultra-wide output voltage according to the present embodiment includes an input port 11, an output port 12, a PFC circuit, a DCDC conversion circuit, an MCU control circuit, a voltage detection circuit, and a current detection circuit;
the input end of the PFC circuit is connected with the input port 11; the output end of the PFC circuit is connected with the input end of the DCDC conversion circuit; the output end of the DCDC conversion circuit is connected with the output port 12; the output port 12 is connected with the MCU control circuit after passing through the voltage detection circuit and the current detection circuit respectively;
the MCU control circuit is used for controlling the PFC circuit and the DCDC conversion circuit.
Specifically, in the multi-mode control circuit for ultra-wide output voltage according to the embodiment, the PFC circuit performs power factor correction on the voltage of the input port 11 and outputs different voltages, and outputs different voltage values determined by signals provided by the MCU control circuit, the voltage values being related to the output voltage value of the output port 12 and the output current value of the output port 12; the DCDC conversion circuit performs power level voltage conversion, completes primary high-voltage output isolation to be converted into secondary voltage and outputs the secondary voltage at the output port 12; the MCU control circuit samples output voltage and output current through the voltage detection circuit and the current detection circuit respectively, the MCU control circuit carries out information processing on the output voltage and output current signals, then feeds back to adjust the output voltage VBUS of the PFC circuit, and meanwhile, the MCU control circuit carries out function adjustment control on the DCDC conversion circuit, and adjusts part of key protection functions of the DCDC conversion circuit when different output voltages are obtained, so that ultra-wide range voltage output is completed.
The multi-mode control circuit for ultra-wide output voltage in this embodiment includes an EMC filter module 21, an input rectifier module 22, a PFC regulator module 23, a PFC receiver module 24, and a PFC output port 25;
the input port 11 is connected with the input end of the EMC filter module 21; the output end of the EMC filtering module 21 is connected with the input end of the input rectifying module 22; the output end of the input rectifying module 22 is connected with the PFC output port 25; the PFC regulating module 23 is electrically connected with the PFC receiving module 24; the PFC receiving module 24 is electrically connected with the MCU control circuit; the PFC regulation module 23 and the PFC reception module 24 are respectively connected with the PFC output port 25.
Through the above arrangement, the PFC receiving module 24 receives the control signal of the MCU control circuit and transmits the control signal to the PFC adjusting module 23, and the PFC adjusting module 23 adjusts the output voltage VBUS of the PFC output port 25.
In the multi-mode control circuit with ultra-wide output voltage according to the embodiment, the PFC receiving module 24 includes an optocoupler PC102B; the MCU control circuit includes an optocoupler transmitter PC102A. The PFC receiving module 24 is facilitated to receive the signal of the MCU control circuit through the above arrangement.
The multi-mode control circuit for ultra-wide output voltage in this embodiment includes an asymmetric half-bridge flyback regulation module 31, a transformer T1, an output rectification module 32, and an asymmetric half-bridge flyback control module;
one end of the primary side of the transformer T1 is connected with the output end of the PFC circuit; the other end of the primary side of the transformer T1 is connected with an asymmetric half-bridge flyback regulation module 31; the asymmetric half-bridge flyback regulation module 31 is electrically connected with the asymmetric half-bridge flyback control module; the asymmetric half-bridge flyback control module is electrically connected with the MCU control circuit; the secondary side of the transformer T1 is connected to the output port 12 through an output rectifying module 32.
Specifically, with the above arrangement, the MCU control circuit can control the asymmetric half-bridge flyback regulation module 31 through the asymmetric half-bridge flyback control module, so as to regulate part of the key protection functions of the DCDC conversion circuit at different output voltages, thereby completing ultra-wide range voltage output.
The current detection circuit of the multi-mode control circuit for ultra-wide output voltage of the embodiment comprises a differential amplification module 41, a current control feedback loop 42 and a detection output module 43; the current control feedback loop 42 is connected with the MCU control circuit; the input end of the differential amplification module 41 is connected with the output port 12; the output end of the differential amplification module 41 and the current control feedback loop 42 are respectively connected with the MCU control circuit through the detection output module 43. Through the arrangement, the output current of the output port 12 can be accurately measured, and the MCU control circuit accurately controls the PFC circuit and the DCDC conversion circuit.
The multi-mode control circuit for ultra-wide output voltage according to the present embodiment, the current detection circuit further includes a voltage control feedback loop 44; the voltage control feedback loop 44 is connected with the MCU control circuit; the voltage control feedback loop 44 is connected to the detection output module 43. Through the arrangement, the output current of the output port 12 can be accurately measured, and the MCU control circuit accurately controls the PFC circuit and the DCDC conversion circuit.
The multi-mode control circuit for ultra-wide output voltage according to the embodiment further includes a battery connected to the output port 12; an anti-reverse-filling module 5 is arranged between the battery and the input end of the differential amplification module 41; the anti-reverse irrigation module 5 is electrically connected with the MCU control circuit. The battery is arranged, so that the battery can be used as a backup power supply; and the anti-reverse-filling module 5 can prevent reverse filling of the battery.
The multi-mode control circuit of the ultra-wide output voltage further comprises a battery electric quantity detection module connected with the battery; the battery electric quantity detection module is electrically connected with the MCU control circuit. The electric quantity of the battery is convenient to measure through the arrangement.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (8)

1. A multi-mode control circuit of ultra-wide output voltage is characterized in that: the power supply circuit comprises an input port (11), an output port (12), a PFC circuit, a DCDC conversion circuit, an MCU control circuit, a voltage detection circuit and a current detection circuit;
the input end of the PFC circuit is connected with an input port (11); the output end of the PFC circuit is connected with the input end of the DCDC conversion circuit; the output end of the DCDC conversion circuit is connected with an output port (12); the output port (12) is connected with the MCU control circuit after passing through the voltage detection circuit and the current detection circuit respectively;
the MCU control circuit is used for controlling the PFC circuit and the DCDC conversion circuit.
2. The ultra-wide output voltage multi-mode control circuit of claim 1, wherein: the PFC circuit comprises an EMC filtering module (21), an input rectifying module (22), a PFC regulating module (23), a PFC receiving module (24) and a PFC output port (25);
the input port (11) is connected with the input end of the EMC filtering module (21); the output end of the EMC filtering module (21) is connected with the input end of the input rectifying module (22); the output end of the input rectifying module (22) is connected with the PFC output port (25); the PFC adjusting module (23) is electrically connected with the PFC receiving module (24); the PFC receiving module (24) is electrically connected with the MCU control circuit; the PFC regulating module (23) and the PFC receiving module (24) are respectively connected with the PFC output port (25).
3. The ultra-wide output voltage multi-mode control circuit of claim 2, wherein: the PFC receiving module (24) includes an optocoupler receiver PC102B; the MCU control circuit includes an optocoupler transmitter PC102A.
4. The ultra-wide output voltage multi-mode control circuit of claim 1, wherein: the DCDC conversion circuit comprises an asymmetric half-bridge flyback regulation module (31), a transformer T1, an output rectification module (32) and an asymmetric half-bridge flyback control module;
one end of the primary side of the transformer T1 is connected with the output end of the PFC circuit; the other end of the primary side of the transformer T1 is connected with an asymmetric half-bridge flyback regulation module (31); the asymmetric half-bridge flyback regulation module (31) is electrically connected with the asymmetric half-bridge flyback control module; the asymmetric half-bridge flyback control module is electrically connected with the MCU control circuit; the secondary side of the transformer T1 is connected with the output port (12) through the output rectifying module (32).
5. The ultra-wide output voltage multi-mode control circuit of claim 1, wherein: the current detection circuit comprises a differential amplification module (41), a current control feedback loop (42) and a detection output module (43); the current control feedback loop (42) is connected with the MCU control circuit; the input end of the differential amplification module (41) is connected with the output port (12); the output end of the differential amplification module (41) and the current control feedback loop (42) are respectively connected with the MCU control circuit through the detection output module (43).
6. The ultra-wide output voltage multi-mode control circuit of claim 5, wherein: the current detection circuit further comprises a voltage control feedback loop (44); the voltage control feedback loop (44) is connected with the MCU control circuit; the voltage control feedback loop (44) is connected with the detection output module (43).
7. The ultra-wide output voltage multi-mode control circuit of claim 5, wherein: the multi-mode control circuit of the ultra-wide output voltage further comprises a battery connected with the output port (12); an anti-reverse-filling module (5) is arranged between the battery and the input end of the differential amplification module (41); the anti-reverse irrigation module (5) is electrically connected with the MCU control circuit.
8. The ultra-wide output voltage multi-mode control circuit of claim 7, wherein: the multi-mode control circuit of the ultra-wide output voltage also comprises a battery electric quantity detection module connected with the battery; the battery electric quantity detection module is electrically connected with the MCU control circuit.
CN202320365557.XU 2023-02-28 2023-02-28 Multi-mode control circuit of ultra-wide output voltage Active CN219394690U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320365557.XU CN219394690U (en) 2023-02-28 2023-02-28 Multi-mode control circuit of ultra-wide output voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320365557.XU CN219394690U (en) 2023-02-28 2023-02-28 Multi-mode control circuit of ultra-wide output voltage

Publications (1)

Publication Number Publication Date
CN219394690U true CN219394690U (en) 2023-07-21

Family

ID=87189063

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320365557.XU Active CN219394690U (en) 2023-02-28 2023-02-28 Multi-mode control circuit of ultra-wide output voltage

Country Status (1)

Country Link
CN (1) CN219394690U (en)

Similar Documents

Publication Publication Date Title
CN103001463A (en) Switching power supply controller and switching power supply containing same
CN203368317U (en) High PFC constant current control device without loop compensation and voltage converter
TWI389437B (en) A power supply with improved light load efficiency
CN103051197B (en) Primary-side-control based control circuit structure for flyback switching power supply
US7602151B2 (en) Charger with output voltage compensation
CN102685982A (en) Primary side feedback constant current control circuit
CN104702095A (en) Switching power supply controller and switching power supply comprising switching power supply controller
US20230129480A1 (en) Electronic device and control method therefor
CN202997942U (en) Switching power supply controller and switching power supply containing same
CN109039093B (en) Isolation type switching power supply and control method thereof
CN204442169U (en) Switch power controller and comprise the Switching Power Supply of this switch power controller
CN102685984A (en) LED (Light Emitting Diode) constant-current driving circuit
CN201207579Y (en) Battery charger
CN115175405A (en) Control circuit for realizing constant power on primary side of switching power supply based on MCU control
CN219394690U (en) Multi-mode control circuit of ultra-wide output voltage
US20240333165A1 (en) Switching power supply using transformer for transmitting information
CN102685983A (en) Primary side feedback LED (Light Emitting Diode) constant-current control circuit
CN107134927B (en) A kind of inductively coupled power transfer device with drop-down auxiliary switch
CN211184343U (en) L ED driver
CN105048832A (en) Switch power supply controller and switch power supply including the switch power supply controller
CN201328102Y (en) Secondary-side control device of transformer
CN202602984U (en) Primary-side feedback constant-current control circuit
CN212137554U (en) Synchronous rectification chip and flyback switching power supply circuit
CN215647484U (en) LED driving power supply
CN103458556B (en) Constant power control circuit

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant