CN111628664B - Power supply for 5G communication base station - Google Patents
Power supply for 5G communication base station Download PDFInfo
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- CN111628664B CN111628664B CN202010530745.4A CN202010530745A CN111628664B CN 111628664 B CN111628664 B CN 111628664B CN 202010530745 A CN202010530745 A CN 202010530745A CN 111628664 B CN111628664 B CN 111628664B
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- 238000004891 communication Methods 0.000 title claims abstract description 16
- 230000001360 synchronised effect Effects 0.000 claims abstract description 43
- 239000003990 capacitor Substances 0.000 claims description 69
- 238000001514 detection method Methods 0.000 claims description 53
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal 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 in a bridge configuration
- H02M7/2195—Conversion of ac power input into dc power output without possibility of reversal 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 in a bridge configuration the switches being synchronously commutated at the same frequency of the AC input voltage
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Abstract
The invention provides a power supply for a 5G communication base station. This a power for 5G communication base station, including synchronous rectification circuit, synchronous rectification circuit includes constant voltage control module, is used for right synchronous rectification circuit output voltage carries out the constant voltage and adjusts, can improve the conversion efficiency of power to the electric energy.
Description
Technical Field
The application relates to the technical field of power supplies, in particular to a power supply for a 5G communication base station.
Background
The 5G era is accelerating, the energy consumption of a communication base station is greatly increased due to an emerging service mode, and the traditional communication power supply has a poor experience and puts new requirements on the performance and the function of the power supply. A rectifying circuit in the power supply rectifies electric energy output by the power supply and supplies the electric energy to the 5G base station.
The problem that exists is that the rectification effect of rectifier circuit in present 5G power is not good, leads to the power output electric energy's conversion efficiency not high. Therefore, a power supply for a 5G communication base station is needed to solve the above technical problems in the prior art.
Disclosure of Invention
The application provides a power for 5G communication base station adopts synchronous rectifier circuit, improves the conversion efficiency of power to the electric energy.
The technical scheme adopted by the application is as follows: a power supply for a 5G communication base station comprises a synchronous rectification circuit, wherein the synchronous rectification circuit comprises a constant voltage control module used for performing constant voltage regulation on output voltage of the synchronous rectification circuit.
Optionally, the constant voltage control module includes: 1 IC chip, 1 sliding resistor, 2 capacitors, 3 diodes and 15 resistors, wherein the resistor (R30), the diode (D3) connected IN parallel, the resistor (R33), the diode (D7) and the resistor (R61) are sequentially connected IN series with the pin VCC of the IC chip (U3) and the pin OUT2 of the IC chip (U3), one end of the resistor (R46) and the capacitor (C17) connected IN series is connected to the pin OUT1 of the IC chip (U3) and then the other end is connected to the pin IN 3 of the IC chip (U3), one end of the resistor (R3) and the diode (D3) connected IN series is connected to the pin OUT 3 of the IC chip (U3) and then the other end is connected between the resistor (R3) and the diode (D3), the capacitor (C3) and the resistor (R3) are connected IN series to the pin OUT 3 of the IC chip (U3) and the pin IN 3, the resistor (R3) and the pin IN 3) are connected between the IC chip (U3) and the pin OUT 3) connected between the IC chip (U3) and the pin IN 3) connected to the IC chip (U3, and the IC chip 3) connected between the pin (U3) connected to the IC chip 3, and the resistor (R3) connected IN series, and the pin 3) connected between the IC chip (R3) connected IN series, and the IC chip (R3) connected to the pin 3) connected IN series, and the pin 3) connected to the IC chip (R3) connected IN between the IC chip (R3) connected IN series, and the pin 3) connected IN between the IC chip (R3) connected to the IC chip (U3) connected IN series, and the pin IN 3) connected to the pin IN 3) connected IN series, and the IC chip (D3) connected to the IC chip (D3) connected IN series, the IC chip (D3) connected IN series connected IN, the resistor (R48) and the sliding resistor (9) which are connected IN series are connected IN parallel with the resistor (R54) and then connected IN series with the capacitor (C21) and the resistor (R42) between a pin IN 2-of the IC chip (U3) and a pin IN2+ of the IC chip (U3), the resistor (R34) is connected to a pin IN2+ of the IC chip (U3), the resistor (R32) is connected between a pin IN1+ of the IC chip (U3) and a pin GND of the IC chip (U3), and the resistor (R29) is connected to a pin IN1+ of the IC chip (U3).
Optionally, the synchronous rectification circuit further includes a constant current control module, where the constant current control module includes: 1 IC chip, 1 optical coupler, 4 capacitors, 8 resistors, wherein a resistor (R45), a capacitor (C45), a resistor (R45) and a resistor (R45) are sequentially connected IN series to a pin IN 45 + and a pin OUT 45 of the IC chip (U45), the resistor (R45) is connected between a pin GND and the pin IN 45-of the IC chip (U45), one end of the capacitor (C45) is connected to a pin VCC and then grounded, one end of the resistor (R45) is connected to a pin IN 45 + and then grounded of the IC chip (U45), the pin IN 45 + of the IC chip (U45) is connected IN series with the capacitor (C45) and then connected to VCC and then connected to a pin VCC and then connected to a resistor (R45) and a resistor (R45) respectively, one end of the resistor (R45) and one end of the capacitor (C45) are connected IN series with a pin IN 45 and a pin VCC of the IC chip (U45) and a pin OUT, and one end of the pin (R45) is connected IN series with a pin D and a pin D (45) of the IC chip (U45) and then connected to a pin OUT, and a pin 45) of the IC chip (R45) and a pin 45, and a pin D, and a pin connected IN series with a pin D, and a pin connected IN series connected to a pin connected between the IC chip (R45, and a pin D, and a pin connected IN series connected with a pin connected to a pin D, and a pin connected IN series connected to a pin 45, and a pin connected to the IC chip (R45, and a pin connected IN series connected to a pin, and a pin connected to a pin, and a pin connected to a pin, and a pin connected to a pin, and a pin connected IN series connected to a pin, and a pin connected IN a pin connected to a pin connected IN series connected to a pin connected IN the pin connected IN series connected IN the pin connected IN series connected IN the IC chip (U45, and a pin connected IN series connected IN the pin, and a pin connected IN the IC chip (R45, and a pin connected IN series connected IN a pin connected IN the pin connected to the pin connected IN the IC chip (R45, and a pin connected IN series connected IN the IC chip (U45, and a pin connected The output end of the optical coupler (PC 2) is connected with the optical coupler (PC 5), and the optical coupler (PC 5) is connected to the control chip L6599.
Optionally, the synchronous rectification circuit further includes an input detection module, and the input detection module includes: 2 IC chips, 1 diode, 1 capacitor and 4 resistors, wherein the resistor (R81) is connected to a pin OUT1 of the IC chip (U6) and a pin VCC of the IC chip (U8), the diode (D14) is connected to a pin OUT1 of the IC chip and a pin IN2 of the IC chip (U6), one end of the resistor (R85) and the capacitor (C30) after being connected IN series is connected to a pin OUT1 of the IC chip (U6) and then grounded, the resistor (R90) is connected to a pin IN2+ of the IC chip (U6) and a pin OUT2 of the IC chip (U3), and the resistor (R91) is connected to a pin IN2+ of the IC chip (U6).
Optionally, the synchronous rectification circuit further includes an output detection module, and the output detection module includes: 1 IC chip, 1 triode, 2 diodes, 5 capacitors and 15 resistors, wherein a current detection port (TN 201) of the resonant circuit is connected with a pin IN + of the IC chip (U8) after being connected with a resistor (R98) IN series, one end of a resistor (R102) is connected with the current detection port (TN 201) and the other end of the resistor (TN 201) is connected with the pin IN + of the IC chip (U8), a resistor (R100) and a resistor (R101) which are connected IN parallel are connected with a pin IN + of the IC chip (U8) after being connected with a resistor (R96) IN series, a resistor (R89) is connected between the pin IN-and the pin OUT of the IC chip (U8), a capacitor (C32) is connected between a pin IN + of the IC chip (U8) and the resistor (R101), one end of a resistor (R78) is connected with the current detection port (TN 201) and the other end of the resistor (R8) is connected with the pin OUT2 of the IC chip (U8), one end of the capacitor (C27) is connected between the resistor (R78) and the current detection port (TN 201), the pin IN-and the pin OUT2 of the IC chip (U7) are connected to a resistor (R57), the resistor (R79) is connected to the collector of a triode (Q13) after being connected with a capacitor (C26) IN series, a resistor (R82) is connected between the base of the triode (Q13) and the pin IN + of the IC chip (U7), the emitter of a triode (Q13) is connected to the pin IN of the IC chip (U7), a resistor (R86) is connected between the base of the triode (Q13) and the pin IN-of the IC chip (U7), the current detection port (TN 101) of the resonance circuit is connected to the pin OUT and the pin IN + of the IC chip (U7), the capacitor (C28), the resistor (R88) and the resistor (R95) are connected between the current detection port (TN 101) and the current detection port (TN 201) IN parallel, the resistor (R84) and a diode (D12) are connected between the current detection port (TN 101) and the current detection port (TN 201) IN series, a resistor (R80) and a diode (D13) are connected in series between the current detection port (TN 101) and the current detection port (TN 201).
Optionally, the synchronous rectification circuit is disposed downstream of the resonant circuit, and is configured to rectify voltages of at least two circuits output by the resonant circuit at the same time.
Optionally, the resonant circuit outputs two branches of circuits, the synchronous rectification circuit includes a first rectification module and a second rectification module respectively connected to the two branches of circuits, and the first rectification module and the second rectification module respectively include a chip UCC 27201A.
Optionally, the first rectification module further includes: the LED driving circuit comprises 2 MOS (metal oxide semiconductor) tubes, 2 diodes and 2 resistors, wherein one end of the diode (Q9) and the resistor (R36) after being connected in parallel is connected to a pin HO of a chip U4, the other end of the diode (Q8926) and the resistor (R36) after being connected in parallel is connected to a G pole of the MOS tube (Q10), an S pole of the MOS tube (Q10) is connected to one of the two circuits, one end of the diode (Q8) and the resistor (R35) after being connected in parallel is connected to a pin LO of the chip U4, the other end of the diode (Q10) is connected to the G pole of the MOS tube, and a D pole of the MOS tube (Q7) is connected to one of the two circuits.
Optionally, the second rectification module further includes: the LED driving circuit comprises 2 MOS tubes, 2 diodes and 2 resistors, wherein one end of the diode (Q14) and the resistor (R83) after being connected in parallel is connected to the pin HO of the chip 11 and the other end of the diode is connected to the G pole of the MOS tube (Q12), the D pole of the MOS tube (Q12) is connected to the D pole of the MOS tube (Q10), the S pole of the MOS tube (Q12) is connected to one of the two circuits, one end of the diode (Q15) and the resistor (R93) after being connected in parallel is connected to the pin LO of the chip 11 and the other end of the diode is connected to the G pole of the MOS tube (Q16), the D pole of the MOS tube (Q16) is connected to the S pole of the MOS tube (Q12), and the S pole of the MOS tube (Q16) is connected to the S pole of the MOS tube (Q7).
Optionally, the resonant circuit includes a control chip L6599, and the first rectifying module further includes: the circuit comprises 4 resistors and 9 resistors, wherein the resistor (R50), the parallel resistor (R60) and the diode (D8), the parallel resistor (R74), the diode (D11) and the resistor (R76) are sequentially connected in series between a pin H1 of a chip U4 and a pin L1 of a chip X11, one end of the resistor (R49) is connected to a pin H1 of the chip U4 and then grounded, and a 15 th pin of the control chip L6599 is connected between the resistor (R60) and the diode (D8).
By adopting the technical scheme, the application at least has the following technical effects:
the application provides a synchronous rectification circuit that is used for 5G communication base station's power to adopt includes constant voltage control module, can carry out constant voltage to synchronous rectification circuit output voltage and adjust, improves the conversion efficiency of power electric energy.
Drawings
Fig. 1 is a flowchart of a monitoring method for a scenario in which an intelligent device is located according to a first embodiment of the present application;
fig. 2 is a flowchart of a monitoring method for a scenario in which an intelligent device is located according to a second embodiment of the present application.
10-a motor drive control system; 100-a motor control unit; 110-a motor drive module; 120-configuration module; 130-voltage isolation transceiver; 140-interaction unit.
Detailed Description
To further clarify the technical measures and effects taken by the present application to achieve the intended purpose, the present application will be described in detail below with reference to the accompanying drawings and preferred embodiments.
The application provides a power for 5G communication base station can carry out constant voltage to synchronous rectifier circuit output voltage and adjust, improves the conversion efficiency of power electric energy. The power supply for the 5G communication base station of the present application and its respective parts will be described in detail below.
Referring to fig. 1, a power supply for a 5G communication base station according to an embodiment of the present application includes a synchronous rectification circuit 30, where the synchronous rectification circuit 30 includes a constant voltage control module 330 (as shown in fig. 2) for performing constant voltage regulation on an output voltage of the synchronous rectification circuit, so as to improve conversion efficiency of the power supply to electric energy.
Referring to fig. 2, in some embodiments, the synchronous rectification circuit 30 further includes a constant voltage control module 330, which includes: 1 IC chip, 1 sliding resistor, 2 capacitors, 3 diodes and 15 resistors, wherein the resistor R, the parallel diode D, the resistor R, the diode D and the resistor R are sequentially connected IN series with a pin VCC of the IC chip U and a pin OUT of the IC chip U, one end of the series resistor R and the capacitor C is connected to the pin OUT of the IC chip U and then the other end thereof is connected to the pin IN-of the IC chip U, one end of the series resistor R and the diode D is connected to the pin OUT of the IC chip U and then the other end thereof is connected between the resistor R and the diode D, the capacitor C and the resistor R are connected IN series between the pin OUT of the IC chip U and the pin IN-of the IC chip U, the resistor R is connected to the pin IN-of the IC chip U, the series resistor R and the sliding resistor 9 are connected IN parallel with the resistor R and then are sequentially connected IN series between the pin IN-of the IC chip U and the pin IN + of the IC chip U, the resistor R34 is connected to the pin IN2+ of the IC chip U3, the resistor R32 is connected between the pin IN1+ of the IC chip U3 and the pin GND of the IC chip U3, and the resistor R29 is connected to the pin IN1+ of the IC chip U3.
Signals processed by a main control unit of the power supply are transmitted to a pin IN1+ of an IC chip U3 through a port CPU5.0 and a resistor R29 and a resistor R32, or transmitted to a pin IN2+ of an IC chip U3 through a resistor R34 and a resistor R29, a resistor R32, a resistor R34, a resistor R46, a capacitor C17, a resistor R47 and a capacitor C22 to form a compensation network, and the processed signals are fed back to an optical coupler PC2 through a diode D5 and a diode D7, and the optical coupler PC2 transmits the signals to a control chip L6599 of the resonant circuit to perform corresponding voltage regulation.
The alternating current compensation network ensures that a 48V direct current constant voltage is output to supply power to 5G equipment, and a pin IN1+ of an IC chip U3 is transmitted to a port CPU5.0 through a resistor R29 to monitor and manage the state of the output voltage. The IC chip U5 detects the output current through a resistor R39 and a resistor R43, and the port CPU18 monitors and manages the output current of the 48V supply 5G device. The chips U3 and U5 form a closed-loop control circuit which is a compensation network for synchronous rectification, so that the synchronous rectification is more stable, the output efficiency of the synchronous rectification is improved by about 5%, the temperature of the whole machine is reduced by 5 ℃, and a larger working current is provided. In addition, the output voltage has short-circuit protection, overvoltage protection and overload protection.
Referring to fig. 2, in some embodiments, the synchronous rectification circuit 30 further includes an input detection module 350, the input detection module 350 including: 2 IC chips, 1 diode, 1 capacitor and 4 resistors, wherein the resistor R81 is connected to a pin OUT1 of the IC chip U6 and a pin VCC of the IC chip U8, the diode D14 is connected to a pin OUT1 of the IC chip and a pin IN2 of the IC chip U6, one end of the resistor R85 and the capacitor C30 which are connected IN series is connected to a pin OUT1 of the IC chip U6 and then grounded, the resistor R90 is connected to a pin IN2+ of the IC chip U6 and a pin OUT2 of the IC chip U3, and the resistor R91 is connected to a pin IN2+ of the IC chip U6.
The synchronous rectification circuit 30 is provided with an input detection module 350 and an output detection module 340, and can feed back to the constant current control module and the constant voltage control module through the detection of input and output current and voltage.
Referring to fig. 2, in some embodiments, the synchronous rectification circuit 30 further includes an output detection module 340, which includes: 1 IC chip, 1 triode, 2 diodes, 5 capacitors and 15 resistors, wherein a current detection port TN201 of the resonant circuit is connected to a pin IN + of an IC chip U8 after being connected with a resistor R98 IN series, one end of a resistor R102 is connected to a current detection port TN201 and the other end thereof is connected to a pin IN + of an IC chip U8, a resistor R100 and a resistor R101 connected IN parallel are connected to a pin IN + of an IC chip U8 after being connected with a resistor R96 IN series, a resistor R89 is connected between a pin IN-and a pin OUT of an IC chip U8, a capacitor C32 is connected between a pin IN + of an IC chip U8 and a resistor R101, one end of a resistor R78 is connected to the current detection port TN201 and the other end thereof is connected to a pin OUT2 of the IC chip U8, one end of a capacitor C27 is connected to a pin TN 23 and the current detection port TN201 and then grounded, a pin IN-and a pin OUT 8 of the IC chip U7 are connected to a resistor R57, a resistor R79 and a capacitor C26 are connected to a collector of a transistor Q13 IN series, the resistor R82 is connected between the base of the transistor Q13 and the pin IN + of the IC chip U7, the emitter of the transistor Q13 is connected to the pin IN of the IC chip U7, the resistor R86 is connected between the base of the transistor Q13 and the pin IN of the IC chip U7, the current detection port TN101 of the resonant circuit is connected between the pin OUT and the pin IN + of the IC chip U7, the capacitor C28, the resistor (R88) and the resistor R95 are connected between the current detection port TN101 and the current detection port TN201 IN parallel, the resistor R84 and the diode D12 are connected between the current detection port TN101 and the current detection port TN201 IN series, and the resistor R80 and the diode D13 are connected between the current detection port TN101 and the current detection port TN201 IN series.
The pin IN + of the IC chip U7, the resistor R97 connected with the pin IN-and the capacitor C31 form a compensation network, the resistor R82 connected with the pin IN + of the IC chip U7, the resistor R83 and the triode Q13 form an amplifying circuit, signals are sent to the resistor R45 through the resistor R57 by the pin IN-and the pin OUT2 of the IC chip U7 for current detection, the pin IN-and the pin OUT2 of the IC chip U7 transmit second signals to the pin IN2+ of the IC chip U6 through the resistor R91, and the resistor R90 on the pin IN2+ of the IC chip U8 and the pin IN2+ of the IC chip U6 form a compensation network to transmit the signals to the port CPU6.0 of the main control unit.
After being coupled, current signals output by a main transformer of the resonant circuit pass through a current detection port TN101 end, are processed by a compensation network consisting of a diode D12, a diode D13, a resistor R80, a resistor R84, a resistor R88, a resistor R95 and a capacitor C22, and then are transmitted to a pin IN + and a pin IN + of an IC chip U8 by a resistor R98 and a resistor R102, and a processed signal is fed back to a current detection port TN201 by a pin OUT2 of the IC chip U8 through a resistor R78.
Referring to fig. 1, a power supply 1 for a 5G communication base station according to an embodiment of the present application includes a synchronous rectification circuit 30 and a resonant circuit (not shown), where the synchronous rectification circuit 30 is disposed downstream of the resonant circuit and is configured to rectify voltages of at least two circuits output by the resonant circuit at the same time.
Compare in prior art and adopt the diode to rectify resonance circuit output circuit's voltage, the power that this application embodiment provided adopts synchronous rectifier circuit 30 to rectify simultaneously resonance circuit output's two at least circuit's voltage, reduces the loss of electric energy.
Referring to fig. 2, in some embodiments, the resonant circuit outputs two branches, the synchronous rectification circuit includes a first rectification module 300 and a second rectification module 310 respectively connected to the two branches, and the first rectification module 300 and the second rectification module 310 respectively include a UCC27201A chip.
The synchronous rectification circuits are respectively corresponding to the rectification modules corresponding to different branches output by the resonance circuit, so that the reliability of the synchronous rectification circuits is improved. Each rectifying module comprises a chip UCC27201A, the chip UCC27201A can drive two N-channel MOS (metal oxide semiconductor) tubes which adopt high-side/low-side configuration, the maximum starting voltage is 120V, the working frequency is higher than 1MHzs, and the low-voltage blocking circuit is used for the under-voltage blocking function of a high-side driver and a low-side driver and aims to achieve the maximum control flexibility. The UCC27200A/1A uses an isolated bus architecture with a two-switch forward converter.
Referring to fig. 2, in some embodiments, the first rectification module 300 further includes: the LED driving circuit comprises 2 MOS tubes, 2 diodes and 2 resistors, wherein one end of the diode Q9 connected in parallel with the resistor R36 is connected to a pin HO of a chip U4, the other end of the diode Q36 connected in parallel with the resistor R36 is connected to a G pole of the MOS tube Q10, an S pole of the MOS tube Q10 is connected to one of the two circuits, one end of the diode Q8 connected in parallel with the resistor R35 is connected to a pin LO of the chip U4, the other end of the diode Q10 connected in parallel with the resistor R35 is connected to the G pole of the MOS tube Q10, and a D pole of the MOS tube Q7 is connected to one of the two circuits.
In the synchronous rectification circuit, the first rectification module 300 and the second rectification module 310 may respectively include at least one MOS transistor for rectification, and in the embodiment of the present application, the first rectification module 300 and the second rectification module 310 respectively include two MOS transistors.
Pin LO of chip U4 transmits a signal to MOS transistor Q7 through resistor R35 and diode Q8, and pin HO of chip U4 transmits a signal to MOS transistor Q10 through resistor R36 and diode Q9.
The synchronous rectification circuit is characterized in that an MOS tube is used as a controllable three-pole switching device, and when a driving signal is added between a gate pole and a source pole, the on/off between the source pole and a drain pole of the MOS tube can be controlled; in addition, the gate driving signal and the source voltage are synchronous, if the source is at a high level, the driving signal is also at a high level, the MOS tube is conducted, otherwise, if the source is at a low level, the driving signal is also at a low level, the MOS tube is disconnected, thus naturally realizing rectification, and current can only flow from the source to the drain. Since the gate signal and the source voltage are synchronized to realize the rectification, this rectification mode is called as synchronous rectification.
Referring to fig. 2, in some embodiments, the second rectification module 310 further includes: 2 MOS tubes, 2 diodes and 2 resistors, wherein one end of the diode Q14 and the resistor R83 after being connected in parallel is connected to the pin HO of the chip 11 and the other end thereof is connected to the G pole of the MOS tube Q12, the D pole of the MOS tube Q12 is connected to the D pole of the MOS tube Q10, the S pole of the MOS tube Q12 is connected to one of the two circuits, one end of the diode Q15 and the resistor R93 after being connected in parallel is connected to the pin LO of the chip 11 and the other end thereof is connected to the G pole of the MOS tube Q16, the D pole of the MOS tube Q16 is connected to the S pole of the MOS tube Q12, and the S pole of the MOS tube Q16 is connected to the S pole of the MOS tube Q7.
Pin HO of chip 11 transmits a signal to resistor R83 and diode D14 to drive MOS transistor Q12, pin LO of chip 11 transmits a signal to resistor R93, and diode Q15 drives MOS transistor Q16.
Referring to fig. 2, in some embodiments, the resonant circuit includes a control chip L6599, and the first rectification module 300 further includes: the circuit comprises 4 resistors and 9 resistors, wherein a resistor R50, a resistor R60 and a diode D8 which are connected in parallel, a resistor R74 and a diode D11 which are connected in parallel and a resistor R76 which are connected in parallel are sequentially connected in series between a pin H1 of a chip U4 and a pin L1 of a chip x 11, one end of a resistor R49 is connected to a pin H1 of the chip U4 and then grounded, and a 15 th pin of a control chip L6599 is connected between the resistor R60 and the diode D8.
The input signal of the chip U4 comes from the resistors R59, D9, R52, R60, D8 and R50 through the pin H1 of the chip U4 and the pin L1 of the chip U4, respectively, and the input signal of the chip 11 comes from the resistors R59, D9, R52, R60, D8 and R50 through the pin H1 of the chip 11 and the pin L1 of the chip 11, respectively.
Referring to fig. 2, in some embodiments, the synchronous rectification circuit 30 further includes a filtering module (included in 320) including: 1 resistor and 5 capacitors, wherein one end of the capacitor C16, the capacitor C12, the capacitor C14, the capacitor C15 and the capacitor C13 which are connected in parallel is used as the anode of the voltage output end, and then the other end is connected in series with the resistor R39 to be used as the cathode of the voltage output end.
The capacitor C16, the capacitor C12, the capacitor C14, and the capacitor C15 are filter capacitors for 48V output, and the resistor R39 is a current detection resistor for constant current output.
Referring to fig. 2, in some embodiments, the resonant circuit further includes 1 optocoupler PC5, and the synchronous rectification circuit 30 further includes a constant current control module 320, where the constant current control module includes: 1 IC chip, 1 optocoupler, 4 capacitors and 8 resistors, wherein the resistor R, the capacitor C, the resistor R and the resistor R are sequentially connected IN series to a pin IN + and a pin OUT of the IC chip U, the resistor R is connected between a pin GND and a pin IN-of the IC chip U, one end of the capacitor C is connected to a pin VCC of the IC chip U and then grounded, one end of the resistor R is connected to a pin IN + of the IC chip U and then grounded, the pin IN + of the IC chip U is connected IN series with the capacitor C and then connected with the pin IN-of the IC chip U respectively, one end of the resistor R and the capacitor C IN series is connected between the pin IN-of the IC chip U and the pin OUT of the IC chip U, one end of the diode D and the resistor R IN series is connected to the pin OUT of the IC chip U and then connected with the two ends thereof to the input end of the optocoupler PC, the output end of, the optical coupler PC5 is connected to the control chip L6599.
The resistor R39 and the resistor R43 detect the change of the output current and then transmit the change of the output current to a pin IN2+ of an IC chip U5, and the resistor R38, the resistor R40, the capacitor C20, the capacitor C25, the resistor R70 and the resistor R62 form a current detection closed-loop control circuit, and transmit a current change signal to the optical coupling PC2 through the diode D4, the resistor R41 and the resistor R37, and transmit the current change signal to a control chip L6599 of the resonant circuit through the optical coupling PC5 IN the resonant circuit, so that the control chip L6599 can adjust the output voltage of the resonant circuit. In addition, the current change signal is fed back to the main control unit of the power supply through the ports CPU18, CPU16 and CPU 3.0.
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of the preferred embodiments, as illustrated in the accompanying drawings.
Claims (6)
1. The utility model provides a power for 5G communication base station, its characterized in that, includes synchronous rectifier circuit and resonant circuit, two branch circuits of resonant circuit output, synchronous rectifier circuit set up in resonant circuit's low reaches are used for with the voltage of two at least branch circuits of resonant circuit output carries out the rectification simultaneously, synchronous rectifier circuit includes constant voltage control module, constant current control module, output detection module and input detection module, constant voltage control module is used for right synchronous rectifier circuit output voltage carries out the constant voltage control, wherein, constant voltage control module includes: 1 IC chip, 1 sliding resistor, 3 capacitors, 3 diodes and 15 resistors, wherein the resistor R30, the parallel diode D30 and the resistor R30, the diode D30 and the resistor R30 are sequentially connected IN series between the pin VCC of the IC chip U30 and the pin OUT 30 of the IC chip U30, one end of the series resistor R30 and the capacitor C30 is connected to the pin OUT 30 of the IC chip U30 and then the other end thereof is connected to the pin IN 30 of the IC chip U30, one end of the series resistor R30 and the diode D30 is connected to the pin OUT 30 of the IC chip U30 and then the other end thereof is connected between the resistor R30 and the diode D30, the capacitor C30 and the resistor R30 are connected IN series to the pin OUT 30 of the IC chip U30 and then the pin IN 30-of the IC chip U30, one end of the resistor R30 is connected to the pin IN 30 of the IC chip U30, the other end of the resistor R30 is connected to a power supply, and the resistor R30 are connected IN parallel to the sliding resistor R30 and the capacitor C30 IN parallel, The resistor R42 is sequentially connected IN series between a pin IN 2-of the IC chip U3 and a pin IN2+ of the IC chip U3, the resistor R34 is connected to a pin IN2+ of the IC chip U3, the resistor R32 is connected between a pin IN1+ of the IC chip U3 and a pin GND of the IC chip U3, and the resistor R29 is connected to a pin IN1+ of the IC chip U3;
the constant current control module comprises: 1 IC chip, 1 optocoupler PC2, 4 capacitors and 9 resistors, wherein a resistor R45 and a resistor R57 are connected between a pin IN2+ of the chip U5 and a 6 th pin IN-of the chip U7 IN the output detection module, one ends of a capacitor C25, a resistor R70 and a resistor R62 connected IN series are grounded, the other ends of a capacitor C25, a resistor R70 and a resistor R62 connected IN series are connected to a pin OUT1 of the IC chip U5, a resistor R38 is connected between a pin GND and a pin IN 2-of the IC chip U5, one end of the capacitor C24 is connected to a pin VCC of the IC chip U5, the other end of the capacitor C24 is grounded, one end of the resistor R58 is connected to a pin IN1+ of the IC chip U5, the other end of the resistor R58 is grounded, a pin IN1+ of the IC chip U5 is connected IN series with a pin IN1 of the capacitor C1, and a pin IN 1-1 of the IC chip U1 and a pin OUT1 are connected between the resistor U1 and the pin 1 connected IN series between the IC chip U1, one end of a diode D4 and a resistor R41 which are connected in series is connected to a pin OUT2 of an IC chip U5, the other end of the diode D4 and the resistor R41 are connected to the input end of an optocoupler PC2, the output end of the optocoupler PC2 is connected with an optocoupler PC5, and the optocoupler PC5 is connected to a control chip L6599; the output detection module includes: 1 IC chip, 1 triode, 2 diodes, 4 capacitors and 16 resistors, wherein a current detection port TN201 of the resonant circuit is connected IN series with a resistor R98 and then connected to a 5 th pin IN + of an IC chip U8 of the input detection module, one end of a resistor R102 is connected with the current detection port TN201 and then the other end thereof is connected to a 2 nd pin IN + of the IC chip U8, a series capacitor C32, a resistor R101, a resistor R100 and a resistor R94 are connected between the 2 nd pin IN + of the IC chip U8 and a 6 th pin IN-of the IC chip U8, one end of a resistor R96 is connected to a 3 rd pin IN-of the IC chip U8, the other end of a resistor R96 is connected between the resistor R101 and the resistor R100, the resistor R89 is connected between the 3 rd pin IN-and a pin OUT of the IC chip U8, one end of the series resistor R78 and the resistor R98 is connected to a pin OUT2 of the IC chip U8, and the other end of the series resistor R78 are connected to the current detection port TN 98, one end of a capacitor C27 is connected between a resistor R78 and a resistor R98, the other end of the capacitor C27 is grounded, one end of a resistor R79 and a capacitor C26 which are connected IN series are connected to a collector of a transistor Q13, the other end of a resistor R79 and a capacitor C26 which are connected IN series are connected to a pin 5 IN + of an IC chip U7, a resistor R82 is connected between a base of the transistor Q13 and a pin 5 IN + of the IC chip U7, an emitter of the transistor Q13 is connected to a pin 3 IN + of the IC chip U7, a resistor R86 is connected between a base of the transistor Q13 and a pin 3 IN-of the IC chip U7, a current detection port TN101 of the resonance circuit is connected between a pin OUT and a pin 2 IN + of the IC chip U7, a capacitor C28, a resistor R88 and a resistor R95 are connected IN parallel between the current detection port TN101 and the current detection port TN201, a resistor R84 and a diode D12 are connected IN series between the current detection port TN101 and the current detection port TN201, the resistor R80 and the diode D13 are connected in series between the current detection port TN101 and the current detection port TN 201.
2. The power supply of claim 1, wherein the input detection module comprises: the circuit comprises 2 IC chips, 1 diode, 1 capacitor and 4 resistors, wherein a resistor R81 is connected between a pin OUT1 of an IC chip U6 and a pin VCC of the IC chip U8, a diode D14 is connected between a pin OUT1 of the IC chip and a pin IN 2-of the IC chip U6, one end of the resistor R85 and a capacitor C30 which are connected IN series is connected to a pin OUT1 of the IC chip U6, the other end of the resistor R85 and a capacitor C30 which are connected IN series is grounded, a resistor R90 is connected between a pin IN2+ of the IC chip U6 and a pin OUT2 of the IC chip U3, one end of a resistor R91 is connected to a pin IN2 of the IC chip U6, and the other end of the resistor R91 is connected between a capacitor C21 and a resistor R42 of a constant voltage control module.
3. The power supply according to claim 1, wherein the synchronous rectification circuit comprises a first rectification module and a second rectification module which are respectively correspondingly connected with the two circuits, and the first rectification module and the second rectification module respectively comprise a chip UCC 27201A.
4. The power supply of claim 3, wherein the first rectification module further comprises: the circuit comprises 2 MOS tubes, 2 diodes and 2 resistors, wherein one end of the diode Q9 connected in parallel with the resistor R36 is connected to a pin HO of a chip U4, the other end of the diode Q36 is connected to a G pole of the MOS tube Q10, an S pole of the MOS tube Q10 is connected to one of the two circuits, one end of the diode Q8 connected in parallel with the resistor R35 is connected to a pin LO of the chip U4, the other end of the diode Q7 is connected to the G pole of the MOS tube Q7, and a D pole of the MOS tube Q7 is connected to one of the two circuits.
5. The power supply of claim 4, wherein the second rectification module further comprises: 2 MOS transistors, 2 diodes, and 2 resistors, wherein one end of the parallel connection of the diode Q14 and the resistor R83 is connected to the pin HO of the chip UCC27201A in the second rectification module, and the other end thereof is connected to the G pole of the MOS transistor Q12, the D pole of the MOS transistor Q12 is connected to the D pole of the MOS transistor Q10, the S pole of the MOS transistor Q12 is connected to one of the two circuits, one end of the parallel connection of the diode Q15 and the resistor R93 is connected to the pin LO of the chip UCC27201A in the second rectification module, and the other end thereof is connected to the G pole of the MOS transistor Q16, the D pole of the MOS transistor Q16 is connected to the S pole of the MOS transistor Q12, and the S pole of the MOS transistor Q16 is connected to the S pole of the MOS transistor Q7.
6. The power supply of claim 4, wherein the resonant circuit comprises a control chip L6599, and wherein the first rectifying module further comprises: the rectifier comprises 2 diodes and 4 resistors, wherein a resistor R50, a resistor R60 and a diode D8 which are connected in parallel, a resistor R74 and a diode D11 which are connected in parallel and a resistor R76 which are connected in parallel are sequentially connected in series between a pin H1 of a chip U4 and a pin L1 of a chip UCC27201A in the second rectifying module, one end of the resistor R49 is connected to the pin H1 of the chip U4, the other end of the resistor R49 is grounded, and a 15 th pin of a control chip L6599 is connected between the resistor R60 and the diode D11.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109302071A (en) * | 2018-10-18 | 2019-02-01 | 南京航空航天大学 | A kind of all-wave active rectification type LLC resonant converter and its control strategy |
| CN209982348U (en) * | 2019-07-26 | 2020-01-21 | 东莞市东颂电子有限公司 | High-reliability digital high-power adapter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109302071A (en) * | 2018-10-18 | 2019-02-01 | 南京航空航天大学 | A kind of all-wave active rectification type LLC resonant converter and its control strategy |
| CN209982348U (en) * | 2019-07-26 | 2020-01-21 | 东莞市东颂电子有限公司 | High-reliability digital high-power adapter |
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