CN202840513U - Switching power supply module parallel connection power supply device - Google Patents
Switching power supply module parallel connection power supply device Download PDFInfo
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- CN202840513U CN202840513U CN 201220504678 CN201220504678U CN202840513U CN 202840513 U CN202840513 U CN 202840513U CN 201220504678 CN201220504678 CN 201220504678 CN 201220504678 U CN201220504678 U CN 201220504678U CN 202840513 U CN202840513 U CN 202840513U
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Abstract
The utility model discloses a switching power supply module parallel connection power supply device, including a main power supply module, an auxiliary power supply module, a first power supply unit and a second power supply unit. The first power supply unit comprises a first BUCK converter circuit, a first sampling amplifying circuit, a first resistor sampling flow equalization circuit, and a first PWM control circuit which are sequentially connected. The first BUCK converter circuit is connected with the first PWM control circuit. The second power supply unit comprises a second BUCK converter circuit, a second sampling amplifying circuit, a second resistor sampling flow equalization circuit and a second PWM control circuit. The second BUCK converter circuit is connected with the second PWM control circuit. The first resistor sampling flow equalization circuit is connected with the second resistor sampling flow equalization circuit. An output terminal of the first BUCK converter circuit and an output terminal of the second BUCK converter circuit are connected with a load. The switching power supply module parallel connection power supply device has high work reliability, a low fault rate, and high power supply efficiency, and realizes the automatic current distribution.
Description
Technical field
The utility model belongs to the switch power technology field, especially relates to a kind of switch power module parallel operation device.
Background technology
Power supply is the capital equipment of realizing that transformation of electrical energy and power transmit, in the information age, the power supply industry has been proposed more, higher requirement, such as: energy-conservation, economize on electricity, material-saving, contracting body, loss of weight, environmental protection, reliable, safety etc.Switching Power Supply is a kind of novel power supply equipment, compares to traditional linear power supply, and is with high content of technology, and it is low, easy to use to consume energy, and obtained preferably economic benefit.One of main application of switch power technology is to be the information industry service, and the development of information technology is had higher requirement again to power technology, thereby has promoted the development of switch power technology.
Over closer year, along with updating and fast development of microelectric technique and technique, magnetic material science and sintering processing technology and other edge technological sciences, the switch voltage-stabilizing technology has also obtained breakthrough.At present, the multiple module paralleling power supply replaces single centralized power power supply to become an important directions of power-supply system development.But defective and the deficiencies such as distributed power source in parallel of the prior art also exists the circuit structure complexity, volume is large, weight is large, failure rate is high, maintenance trouble, cost is high, power supplying efficiency is low can not well satisfy the actual demand of using.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, and a kind of switch power module parallel operation device is provided, and it is simple in structure, volume is small and exquisite, lightweight, flexible and convenient to use, functional reliability is high, failure rate is low, need not frequent maintenance and repair, power supplying efficiency is high, has realized that electric current distributes automatically, result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of switch power module parallel operation device, it is characterized in that: comprise the 24V main power source module, ± 12V accessory power supply module, the first power supply unit and the second power supply unit, described the first power supply unit is made of the BUCK converter circuit, the first amplifier circuit, the first resistance sampling flow equalizing circuit and the first pwm control circuit that connect successively, and a described BUCK converter circuit and described the first pwm control circuit join; Described the second power supply unit is made of the 2nd BUCK converter circuit, the second amplifier circuit, the second resistance sampling flow equalizing circuit and the second pwm control circuit that connect successively, and described the 2nd BUCK converter circuit and described the second pwm control circuit join; Described the first resistance sampling flow equalizing circuit and described the second resistance sampling flow equalizing circuit join, a described BUCK converter circuit, the first pwm control circuit, the 2nd BUCK converter circuit and the second pwm control circuit all join with described 24V main power source module, described the first amplifier circuit, the first resistance sampling flow equalizing circuit, the second amplifier circuit and the second resistance sampling flow equalizing circuit all join with described ± 12V accessory power supply module, and the output of the output of a described BUCK converter circuit and the 2nd BUCK converter circuit is connected to load.
Above-mentioned a kind of switch power module parallel operation device is characterized in that: a described BUCK converter circuit is by field effect transistor Q1, Schottky diode D1, inductance L 1, resistance R 1, R2, R3, R5 and R18, potentiometer R4, polar capacitor C1 and C3, and polarity free capacitor C2 and C4 formation; The output 24V of the source electrode of described field effect transistor Q1 and described 24V main power source module joins, the grid of described field effect transistor Q1 and the first pwm control circuit join, one end of the drain electrode of described field effect transistor Q1 and inductance L 1 and the negative pole of Schottky diode D1 join, the positive pole of the other end of described inductance L 1 and polar capacitor C1, the end of polarity free capacitor C2, one end of resistance R 1, one end of resistance R 2 and an end of resistance R 5 join, the other end of the other end of described resistance R 1 and resistance R 2, one end of resistance R 18, the positive pole of polar capacitor C3, the end of a polarity free capacitor C4 and end of resistance R 3 joins and be the output OUTPUT1 of a described BUCK converter circuit, the other end of the other end of described resistance R 5 and resistance R 18 all joins with the first amplifier circuit, the stiff end of the other end of described resistance R 3 and potentiometer R4 all joins the positive pole of described Schottky diode D1 with the first pwm control circuit, the negative pole of polar capacitor C1, the other end of polarity free capacitor C2, the negative pole of polar capacitor C3, the equal ground connection of another stiff end of the other end of polarity free capacitor C4 and potentiometer R4.
Above-mentioned a kind of switch power module parallel operation device is characterized in that: described the first amplifier circuit is made of first instrument amplifier chip INA128P, resistance R 19 and potentiometer R22; The pin 1 of described first instrument amplifier chip INA128P joins with an end of resistance R 19, the stiff end of the other end of described resistance R 19 and potentiometer R22 joins, the pin 8 of another stiff end of described potentiometer R22 and first instrument amplifier chip INA128P joins, the pin 2 of described first instrument amplifier chip INA128P joins with the other end of resistance R 5, the pin 3 of described first instrument amplifier chip INA128P joins with the other end of resistance R 18, the pin 4 of described first instrument amplifier chip INA128P joins with the cathode output end-12V of ± 12V accessory power supply module, the pin 6 of described first instrument amplifier chip INA128P and the first resistance sampling flow equalizing circuit join, the pin 7 of described first instrument amplifier chip INA128P joins pin 5 ground connection of described first instrument amplifier chip INA128P with the cathode output end+12V of ± 12V accessory power supply module.
Above-mentioned a kind of switch power module parallel operation device is characterized in that: described the first resistance sampling flow equalizing circuit is by the first operational amplifier chip 4558, switching diode D2, and polarity free capacitor C8, potentiometer R21, and resistance R 8, R9 and R20 consist of; The pin 1 of described the first operational amplifier chip 4558, the end of polarity free capacitor C8 and the negative pole of switching diode D2 all join with the first pwm control circuit, the pin 2 of described the first operational amplifier chip 4558 and the other end of polarity free capacitor C8, the positive pole of switching diode D2, the stiff end of one end of resistance R 20 and potentiometer R21 joins, the pin 3 of described the first operational amplifier chip 4558 joins with an end of resistance R 9, the pin 4 of described the first operational amplifier chip 4558 joins with the cathode output end-12V of ± 12V accessory power supply module, the pin 5 of described the first operational amplifier chip 4558 and an end of resistance R 8 all join with the current-sharing end of the second resistance sampling flow equalizing circuit, another stiff end of the other end of described resistance R 8 and potentiometer R21 all joins with the pin 6 of first instrument amplifier chip INA128P, the pin 6 of described the first operational amplifier chip 4558 and pin 7 all join with the other end of resistance R 9, the pin 8 of described the first operational amplifier chip 4558 joins the other end ground connection of described resistance R 20 with the cathode output end+12V of ± 12V accessory power supply module.
Above-mentioned a kind of switch power module parallel operation device, it is characterized in that: described the first pwm control circuit is by the first comparator chip TL494, polarity free capacitor C5, C6 and C7, and resistance R 7, R10, R11, R12, R13, R14, R15, R16 and R17 consist of; The pin 1 of described the first comparator chip TL494 joins with the other end of resistance R 3 and the stiff end of potentiometer R4, the pin 2 of described the first comparator chip TL494 and an end of resistance R 16, one end of resistance R 17, one end of resistance R 11 and an end of resistance R 10 join, the pin 3 of described the first comparator chip TL494 joins with the other end of resistance R 17 and the end of polarity free capacitor C7, the other end of the other end of described resistance R 16 and polarity free capacitor C7 joins, the pin 5 of described the first comparator chip TL494 joins with the end of polarity free capacitor C6, the pin 6 of described the first comparator chip TL494 joins with an end of resistance R 12, the pin 8 of described the first comparator chip TL494 and pin 11 all join with an end of resistance R 13 and the end of polarity free capacitor C5, the pin 12 of described the first comparator chip TL494 and an end of resistance R 14 all join with the output 24V of described 24V main power source module, the other end of described resistance R 14, the other end of the other end of resistance R 13 and polarity free capacitor C5 all joins with the grid of field effect transistor Q1, the pin 14 of described the first comparator chip TL494 joins with the other end of resistance R 11 and an end of resistance R 15, the pin 15 of described the first comparator chip TL494 joins with the other end of resistance R 15, one end of the other end of described resistance R 10 and resistance R 7 all with the pin 1 of described the first operational amplifier chip 4558, the end of polarity free capacitor C8 and the negative pole of switching diode D2 join, the pin 4 of described the first comparator chip TL494, pin 7, pin 9, pin 10, the other end of pin 13 and pin 16 and capacitor C 6, the equal ground connection of the other end of the other end of resistance R 7 and resistance R 12.
Above-mentioned a kind of switch power module parallel operation device, it is characterized in that: described the 2nd BUCK converter circuit is by field effect transistor Q2, Schottky diode D3, inductance L 2, resistance R 23, R24, R25, R27 and R40, potentiometer R26, polar capacitor C9 and C11, and polarity free capacitor C10 and C12 formation; The output 24V of the source electrode of described field effect transistor Q2 and described 24V main power source module joins, the grid of described field effect transistor Q2 and the second pwm control circuit join, one end of the drain electrode of described field effect transistor Q 2 and inductance L 2 and the negative pole of Schottky diode D3 join, the positive pole of the other end of described inductance L 2 and polar capacitor C9, the end of polarity free capacitor C10, one end of resistance R 23, one end of resistance R 24 and an end of resistance R 27 join, the other end of the other end of described resistance R 23 and resistance R 24, one end of resistance R 238, the positive pole of polar capacitor C11, the end of a polarity free capacitor C12 and end of resistance R 25 joins and be the output OUTPUT2 of described the 2nd BUCK converter circuit, the other end of the other end of described resistance R 27 and resistance R 238 all joins with the second amplifier circuit, the stiff end of the other end of described resistance R 25 and potentiometer R26 all joins the positive pole of described Schottky diode D3 with the second pwm control circuit, the negative pole of polar capacitor C9, the other end of polarity free capacitor C10, the negative pole of polar capacitor C11, the equal ground connection of another stiff end of the other end of polarity free capacitor C12 and potentiometer R26.
Above-mentioned a kind of switch power module parallel operation device is characterized in that: described the second amplifier circuit is made of second instrument amplifier chip INA128P and resistance R 41; The pin 1 of described second instrument amplifier chip INA128P joins with an end of resistance R 41, the pin 8 of the other end of described resistance R 41 and second instrument amplifier chip INA128P joins, the pin 2 of described second instrument amplifier chip INA128P joins with the other end of resistance R 5, the pin 3 of described second instrument amplifier chip INA128P joins with the other end of resistance R 18, the pin 4 of described second instrument amplifier chip INA128P joins with the cathode output end-12V of ± 12V accessory power supply module, the pin 6 of described second instrument amplifier chip INA128P and the second resistance sampling flow equalizing circuit join, the pin 7 of described second instrument amplifier chip INA128P joins pin 5 ground connection of described second instrument amplifier chip INA128P with the cathode output end+12V of ± 12V accessory power supply module.
Above-mentioned a kind of switch power module parallel operation device, it is characterized in that: described the second resistance sampling flow equalizing circuit is by the second operational amplifier chip 4558, switching diode D4, polarity free capacitor C16, potentiometer R43, and resistance R 30, R31 and R42 consist of; The pin 1 of described the second operational amplifier chip 4558, the end of polarity free capacitor C16 and the negative pole of switching diode D4 all join with the second pwm control circuit, the pin 2 of described the second operational amplifier chip 4558 and the other end of polarity free capacitor C16, the positive pole of switching diode D4, the stiff end of one end of resistance R 42 and potentiometer R43 joins, the pin 3 of described the second operational amplifier chip 4558 joins with an end of resistance R 31, the pin 4 of described the second operational amplifier chip 4558 joins with the cathode output end-12V of ± 12V accessory power supply module, the pin 5 of described the second operational amplifier chip 4558 and an end of resistance R 30 all join with the current-sharing end of the first resistance sampling flow equalizing circuit, another stiff end of the other end of described resistance R 30 and potentiometer R43 all joins with the pin 6 of second instrument amplifier chip INA128P, the pin 6 of described the second operational amplifier chip 4558 and pin 7 all join with the other end of resistance R 31, the pin 8 of described the second operational amplifier chip 4558 joins the other end ground connection of described resistance R 42 with the cathode output end+12V of ± 12V accessory power supply module.
Above-mentioned a kind of switch power module parallel operation device, it is characterized in that: described the second pwm control circuit is by the second comparator chip TL494, polarity free capacitor C13, C14 and C15, and resistance R 29, R32, R33, R34, R35, R36, R37, R38 and R39 consist of; The pin 1 of described the second comparator chip TL494 joins with the other end of resistance R 3 and the stiff end of potentiometer R4, the pin 2 of described the second comparator chip TL494 and an end of resistance R 38, one end of resistance R 39, one end of resistance R 33 and an end of resistance R 32 join, the pin 3 of described the second comparator chip TL494 joins with the other end of resistance R 39 and the end of polarity free capacitor C15, the other end of the other end of described resistance R 38 and polarity free capacitor C15 joins, the pin 5 of described the second comparator chip TL494 joins with the end of polarity free capacitor C14, the pin 6 of described the second comparator chip TL494 joins with an end of resistance R 34, the pin 8 of described the second comparator chip TL494 and pin 11 all join with an end of resistance R 35 and the end of polarity free capacitor C13, the pin 12 of described the second comparator chip TL494 and an end of resistance R 36 all join with the output 24V of described 24V main power source module, the other end of described resistance R 36, the other end of the other end of resistance R 35 and polarity free capacitor C13 all joins with the grid of field effect transistor Q2, the pin 14 of described the second comparator chip TL494 joins with the other end of resistance R 33 and an end of resistance R 37, the pin 15 of described the second comparator chip TL494 joins with the other end of resistance R 37, one end of the other end of described resistance R 32 and resistance R 29 all with the pin 1 of described the second operational amplifier chip 4558, the end of polarity free capacitor C16 and the negative pole of switching diode D4 join, the pin 4 of described the second comparator chip TL494, pin 7, pin 9, pin 10, the other end of pin 13 and pin 16 and capacitor C 14, the equal ground connection of the other end of the other end of resistance R 29 and resistance R 34.
Above-mentioned a kind of switch power module parallel operation device is characterized in that: described load is that Standard resistance range is the slide rheostat of 0～100 Ω.
The utility model compared with prior art has the following advantages:
1, flow equalizing circuit of the present utility model adopts the Averaged Current Automatic Current Sharing method to realize that peripheral circuit is fairly simple, and cost is low, so that whole circuit structure is simple, volume is small and exquisite, and is lightweight.
2, to compare single power module its efficient of powering higher for the utility model, and dynamic property is better, and load regulation is higher, and power output is extendible larger, and is easy to safeguard, and is flexible and convenient to use.
3, the utility model has adopted the power supply of module parallel current-sharing, has improved the reliability of power-supply system, failure rate is low, need not frequent maintenance and repair, each module energy average output current has guaranteed current stress and thermal stress uniform distribution between each module, reasonable in design and complete function.
4, of the present utility model practical, when normally using as power supply, can also be placed on the laboratory and use, to cultivate the student to understanding and the manipulative ability of power technology.
5, the power supplying efficiency that improved of the present utility model has realized that electric current distributes automatically, and result of use is good, is convenient to promote the use of.
In sum, the utility model is simple in structure, volume is small and exquisite, lightweight, flexible and convenient to use, functional reliability is high, failure rate is low, need not frequent maintenance and repair, power supplying efficiency is high, has realized that electric current distributes automatically, circuit structure complicated, defective and the deficiencies such as volume is large, weight is large, failure rate is high, maintenance trouble, cost is high, power supplying efficiency is low that distributed power source in parallel of the prior art also exists have been solved, be well positioned to meet the demand of actual use, result of use is good, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of the utility model the one BUCK converter circuit.
Fig. 3 is the circuit theory diagrams of the utility model the first amplifier circuit.
Fig. 4 is the circuit theory diagrams of the utility model the first resistance sampling flow equalizing circuit.
Fig. 5 is the circuit theory diagrams of the utility model the first pwm control circuit.
Fig. 6 is the circuit theory diagrams of the utility model the 2nd BUCK converter circuit.
Fig. 7 is the circuit theory diagrams of the utility model the second amplifier circuit.
Fig. 8 is the circuit theory diagrams of the utility model the second resistance sampling flow equalizing circuit.
Fig. 9 is the circuit theory diagrams of the utility model the second pwm control circuit.
Description of reference numerals:
1-24V main power source module; 2-1-the one BUCK converter circuit;
2-2-the 2nd BUCK converter circuit; 3-1-first amplifier circuit;
3-2-second amplifier circuit; 4-1-first resistance sampling flow equalizing circuit;
4-2-second resistance sampling flow equalizing circuit; 5-1-first pwm control circuit;
5-2-second pwm control circuit; 6-± 12V accessory power supply module;
7-load.
Embodiment
As shown in Figure 1, the utility model comprise 24V main power source module 1, ± 12V accessory power supply module 6, the first power supply unit and the second power supply unit, described the first power supply unit is made of the BUCK converter circuit 2-1, the first amplifier circuit 3-1, the first resistance sampling flow equalizing circuit 4-1 and the first pwm control circuit 5-1 that connect successively, and a described BUCK converter circuit 2-1 and described the first pwm control circuit 5-1 join; Described the second power supply unit is made of the 2nd BUCK converter circuit 2-2, the second amplifier circuit 3-2, the second resistance sampling flow equalizing circuit 4-2 and the second pwm control circuit 5-2 that connect successively, and described the 2nd BUCK converter circuit 2-2 and described the second pwm control circuit 5-2 join; Described the first resistance sampling flow equalizing circuit 4-1 and described the second resistance sampling flow equalizing circuit 4-2 join, a described BUCK converter circuit 2-1, the first pwm control circuit 5-1, the 2nd BUCK converter circuit 2-2 and the second pwm control circuit 5-2 all join with described 24V main power source module 1, described the first amplifier circuit 3-1, the first resistance sampling flow equalizing circuit 4-1, the second amplifier circuit 3-2 and the second resistance sampling flow equalizing circuit 4-2 all join with described ± 12V accessory power supply module 6, and the output of the output of a described BUCK converter circuit 2-1 and the 2nd BUCK converter circuit 2-2 is connected to load 7.
In conjunction with Fig. 2, in the present embodiment, a described BUCK converter circuit 2-1 is by field effect transistor Q1, Schottky diode D1, and inductance L 1, resistance R 1, R2, R3, R5 and R18, potentiometer R4, polar capacitor C1 and C3, and polarity free capacitor C2 and C4 consist of; The output 24V of the source electrode of described field effect transistor Q1 and described 24V main power source module 1 joins, the grid of described field effect transistor Q1 and the first pwm control circuit 5-1 join, one end of the drain electrode of described field effect transistor Q1 and inductance L 1 and the negative pole of Schottky diode D1 join, the positive pole of the other end of described inductance L 1 and polar capacitor C1, the end of polarity free capacitor C2, one end of resistance R 1, one end of resistance R 2 and an end of resistance R 5 join, the other end of the other end of described resistance R 1 and resistance R 2, one end of resistance R 18, the positive pole of polar capacitor C3, the end of a polarity free capacitor C4 and end of resistance R 3 joins and be the output OUTPUT1 of a described BUCK converter circuit 2-1, the other end of the other end of described resistance R 5 and resistance R 18 all joins with the first amplifier circuit 3-1, the stiff end of the other end of described resistance R 3 and potentiometer R4 all joins the positive pole of described Schottky diode D1 with the first pwm control circuit 5-1, the negative pole of polar capacitor C1, the other end of polarity free capacitor C2, the negative pole of polar capacitor C3, the equal ground connection of another stiff end of the other end of polarity free capacitor C4 and potentiometer R4.
In conjunction with Fig. 3, in the present embodiment, described the first amplifier circuit 3-1 is made of first instrument amplifier chip INA128P, resistance R 19 and potentiometer R22; The pin 1 of described first instrument amplifier chip INA128P joins with an end of resistance R 19, the stiff end of the other end of described resistance R 19 and potentiometer R22 joins, the pin 8 of another stiff end of described potentiometer R22 and first instrument amplifier chip INA128P joins, the pin 2 of described first instrument amplifier chip INA128P joins with the other end of resistance R 5, the pin 3 of described first instrument amplifier chip INA128P joins with the other end of resistance R 18, the pin 4 of described first instrument amplifier chip INA128P joins with the cathode output end-12V of ± 12V accessory power supply module 6, the pin 6 of described first instrument amplifier chip INA128P and the first resistance sampling flow equalizing circuit 4-1 join, the pin 7 of described first instrument amplifier chip INA128P joins pin 5 ground connection of described first instrument amplifier chip INA128P with the cathode output end+12V of ± 12V accessory power supply module 6.
In conjunction with Fig. 4, in the present embodiment, described the first resistance sampling flow equalizing circuit 4-1 is by the first operational amplifier chip 4558, switching diode D2, and polarity free capacitor C8, potentiometer R21, and resistance R 8, R9 and R20 consist of; The pin 1 of described the first operational amplifier chip 4558, the end of polarity free capacitor C8 and the negative pole of switching diode D2 all join with the first pwm control circuit 5-1, the pin 2 of described the first operational amplifier chip 4558 and the other end of polarity free capacitor C8, the positive pole of switching diode D2, the stiff end of one end of resistance R 20 and potentiometer R21 joins, the pin 3 of described the first operational amplifier chip 4558 joins with an end of resistance R 9, the pin 4 of described the first operational amplifier chip 4558 joins with the cathode output end-12V of ± 12V accessory power supply module 6, the pin 5 of described the first operational amplifier chip 4558 and an end of resistance R 8 all join with the current-sharing end of the second resistance sampling flow equalizing circuit 4-2, another stiff end of the other end of described resistance R 8 and potentiometer R21 all joins with the pin 6 of first instrument amplifier chip INA128P, the pin 6 of described the first operational amplifier chip 4558 and pin 7 all join with the other end of resistance R 9, the pin 8 of described the first operational amplifier chip 4558 joins the other end ground connection of described resistance R 20 with the cathode output end+12V of ± 12V accessory power supply module 6.
In conjunction with Fig. 5, in the present embodiment, described the first pwm control circuit 5-1 is by the first comparator chip TL494, polarity free capacitor C5, C6 and C7, and resistance R 7, R10, R11, R12, R13, R14, R15, R16 and R17 consist of; The pin 1 of described the first comparator chip TL494 joins with the other end of resistance R 3 and the stiff end of potentiometer R4, the pin 2 of described the first comparator chip TL494 and an end of resistance R 16, one end of resistance R 17, one end of resistance R 11 and an end of resistance R 10 join, the pin 3 of described the first comparator chip TL494 joins with the other end of resistance R 17 and the end of polarity free capacitor C7, the other end of the other end of described resistance R 16 and polarity free capacitor C7 joins, the pin 5 of described the first comparator chip TL494 joins with the end of polarity free capacitor C6, the pin 6 of described the first comparator chip TL494 joins with an end of resistance R 12, the pin 8 of described the first comparator chip TL494 and pin 11 all join with an end of resistance R 13 and the end of polarity free capacitor C5, the pin 12 of described the first comparator chip TL494 and an end of resistance R 14 all join with the output 24V of described 24V main power source module 1, the other end of described resistance R 14, the other end of the other end of resistance R 13 and polarity free capacitor C5 all joins with the grid of field effect transistor Q1, the pin 14 of described the first comparator chip TL494 joins with the other end of resistance R 11 and an end of resistance R 15, the pin 15 of described the first comparator chip TL494 joins with the other end of resistance R 15, one end of the other end of described resistance R 10 and resistance R 7 all with the pin 1 of described the first operational amplifier chip 4558, the end of polarity free capacitor C8 and the negative pole of switching diode D2 join, the pin 4 of described the first comparator chip TL494, pin 7, pin 9, pin 10, the other end of pin 13 and pin 16 and capacitor C 6, the equal ground connection of the other end of the other end of resistance R 7 and resistance R 12.
In conjunction with Fig. 6, in the present embodiment, described the 2nd BUCK converter circuit 2-2 is by field effect transistor Q2, Schottky diode D3, inductance L 2, resistance R 23, R24, R25, R27 and R40, potentiometer R26, polar capacitor C9 and C11, and polarity free capacitor C10 and C12 formation; The output 24V of the source electrode of described field effect transistor Q2 and described 24V main power source module 1 joins, the grid of described field effect transistor Q2 and the second pwm control circuit 5-2 join, one end of the drain electrode of described field effect transistor Q2 and inductance L 2 and the negative pole of Schottky diode D3 join, the positive pole of the other end of described inductance L 2 and polar capacitor C9, the end of polarity free capacitor C10, one end of resistance R 23, one end of resistance R 24 and an end of resistance R 27 join, the other end of the other end of described resistance R 23 and resistance R 24, one end of resistance R 238, the positive pole of polar capacitor C11, the end of a polarity free capacitor C12 and end of resistance R 25 joins and be the output OUTPUT2 of described the 2nd BUCK converter circuit 2-2, the other end of the other end of described resistance R 27 and resistance R 238 all joins with the second amplifier circuit 3-2, and the stiff end of the other end of described resistance R 25 and potentiometer R26 is all with
Pwm control circuit 5-2 joins, the equal ground connection of another stiff end of the negative pole of the negative pole of the positive pole of described Schottky diode D3, polar capacitor C9, the other end of polarity free capacitor C10, polar capacitor C11, the other end of polarity free capacitor C12 and potentiometer R26.
In conjunction with Fig. 7, in the present embodiment, described the second amplifier circuit 3-2 is made of second instrument amplifier chip INA128P and resistance R 41; The pin 1 of described second instrument amplifier chip INA128P joins with an end of resistance R 41, the pin 8 of the other end of described resistance R 41 and second instrument amplifier chip INA128P joins, the pin 2 of described second instrument amplifier chip INA128P joins with the other end of resistance R 5, the pin 3 of described second instrument amplifier chip INA128P joins with the other end of resistance R 18, the pin 4 of described second instrument amplifier chip INA128P joins with the cathode output end-12V of ± 12V accessory power supply module 6, the pin 6 of described second instrument amplifier chip INA128P and the second resistance sampling flow equalizing circuit 4-2 join, the pin 7 of described second instrument amplifier chip INA128P joins pin 5 ground connection of described second instrument amplifier chip INA128P with the cathode output end+12V of ± 12V accessory power supply module 6.
In conjunction with Fig. 8, in the present embodiment, described the second resistance sampling flow equalizing circuit 4-2 is by the second operational amplifier chip 4558, switching diode D4, and polarity free capacitor C16, potentiometer R43, and resistance R 30, R31 and R42 consist of; The pin 1 of described the second operational amplifier chip 4558, the end of polarity free capacitor C16 and the negative pole of switching diode D4 all join with the second pwm control circuit 5-2, the pin 2 of described the second operational amplifier chip 4558 and the other end of polarity free capacitor C16, the positive pole of switching diode D4, the stiff end of one end of resistance R 42 and potentiometer R43 joins, the pin 3 of described the second operational amplifier chip 4558 joins with an end of resistance R 31, the pin 4 of described the second operational amplifier chip 4558 joins with the cathode output end-12V of ± 12V accessory power supply module 6, the pin 5 of described the second operational amplifier chip 4558 and an end of resistance R 30 all join with the current-sharing end of the first resistance sampling flow equalizing circuit 4-1, another stiff end of the other end of described resistance R 30 and potentiometer R43 all joins with the pin 6 of second instrument amplifier chip INA128P, the pin 6 of described the second operational amplifier chip 4558 and pin 7 all join with the other end of resistance R 31, the pin 8 of described the second operational amplifier chip 4558 joins the other end ground connection of described resistance R 42 with the cathode output end+12V of ± 12V accessory power supply module 6.
In conjunction with Fig. 9, in the present embodiment, described the second pwm control circuit 5-2 is by the second comparator chip TL494, polarity free capacitor C13, C14 and C15, and resistance R 29, R32, R33, R34, R35, R36, R37, R38 and R39 consist of; The pin 1 of described the second comparator chip TL494 joins with the other end of resistance R 3 and the stiff end of potentiometer R4, the pin 2 of described the second comparator chip TL494 and an end of resistance R 38, one end of resistance R 39, one end of resistance R 33 and an end of resistance R 32 join, the pin 3 of described the second comparator chip TL494 joins with the other end of resistance R 39 and the end of polarity free capacitor C15, the other end of the other end of described resistance R 38 and polarity free capacitor C15 joins, the pin 5 of described the second comparator chip TL494 joins with the end of polarity free capacitor C14, the pin 6 of described the second comparator chip TL494 joins with an end of resistance R 34, the pin 8 of described the second comparator chip TL494 and pin 11 all join with an end of resistance R 35 and the end of polarity free capacitor C13, the pin 12 of described the second comparator chip TL494 and an end of resistance R 36 all join with the output 24V of described 24V main power source module 1, the other end of described resistance R 36, the other end of the other end of resistance R 35 and polarity free capacitor C13 all joins with the grid of field effect transistor Q2, the pin 14 of described the second comparator chip TL494 joins with the other end of resistance R 33 and an end of resistance R 37, the pin 15 of described the second comparator chip TL494 joins with the other end of resistance R 37, one end of the other end of described resistance R 32 and resistance R 29 all with the pin 1 of described the second operational amplifier chip 4558, the end of polarity free capacitor C16 and the negative pole of switching diode D4 join, the pin 4 of described the second comparator chip TL494, pin 7, pin 9, pin 10, the other end of pin 13 and pin 16 and capacitor C 14, the equal ground connection of the other end of the other end of resistance R 29 and resistance R 34.
In the present embodiment, described load 7 is the slide rheostat of 0～100 Ω for Standard resistance range.
Operation principle of the present utility model and the course of work are: 24V main power source module 1 is given the first pwm control circuit 5-1, the second pwm control circuit 5-2, the one BUCK converter circuit 2-1 and the 2nd BUCK converter circuit 2-2 power supply, ± 12V accessory power supply module 6 is given the first amplifier circuit 3-1, the first resistance sampling flow equalizing circuit 4-1, the second amplifier circuit 3-2 and the second resistance sampling flow equalizing circuit 4-2 power supply, a BUCK converter circuit 2-1 wherein and the 2nd BUCK converter circuit 2-2 are main circuit, the first amplifier circuit 3-1 sample the voltage of BUCK converter circuit 2-1 output and amplify by first instrument amplifier chip INA128P after export to the first resistance sampling flow equalizing circuit 4-1, the second amplifier circuit 3-2 sample the voltage of the 2nd BUCK converter circuit 2-2 output and amplify by second instrument amplifier chip INA128P after export to the second resistance sampling flow equalizing circuit 4-2, control the first comparator chip TL494 output adjustment pulsewidth among the first pwm control circuit 5-1 by the first resistance sampling flow equalizing circuit 4-1, control the second comparator chip TL494 output adjustment pulsewidth among the second pwm control circuit 5-1 by the second resistance sampling flow equalizing circuit 4-1, realize 8V～15V burning voltage output; By the first resistance sampling flow equalizing circuit 4-1 be connected the connection of resistance sampling flow equalizing circuit 4-2 and realize parallel connection and the current-sharing of the first power supply unit and the second power supply unit, consisted of this parallel operation device, adopted the Averaged Current Automatic Current Sharing method, by adjusting potentiometer R21 among the first resistance sampling flow equalizing circuit 4-1 and the potentiometer R43 among the second resistance sampling flow equalizing circuit 4-2, can realize a certain proportion of current-sharing, improve the reliability of power supply, make power supplying efficiency higher.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection range of technical solutions of the utility model.
Claims (10)
1. switch power module parallel operation device, it is characterized in that: comprise 24V main power source module (1), ± 12V accessory power supply module (6), the first power supply unit and the second power supply unit, described the first power supply unit is made of a BUCK converter circuit (2-1) that connects successively, the first amplifier circuit (3-1), the first resistance sampling flow equalizing circuit (4-1) and the first pwm control circuit (5-1), and a described BUCK converter circuit (2-1) joins with described the first pwm control circuit (5-1); Described the second power supply unit is made of the 2nd BUCK converter circuit (2-2) that connects successively, the second amplifier circuit (3-2), the second resistance sampling flow equalizing circuit (4-2) and the second pwm control circuit (5-2), and described the 2nd BUCK converter circuit (2-2) joins with described the second pwm control circuit (5-2); Described the first resistance sampling flow equalizing circuit (4-1) joins with described the second resistance sampling flow equalizing circuit (4-2), a described BUCK converter circuit (2-1), the first pwm control circuit (5-1), the 2nd BUCK converter circuit (2-2) and the second pwm control circuit (5-2) all join with described 24V main power source module (1), described the first amplifier circuit (3-1), the first resistance sampling flow equalizing circuit (4-1), the second amplifier circuit (3-2) and the second resistance sampling flow equalizing circuit (4-2) all join with described ± 12V accessory power supply module (6), and the output of the output of a described BUCK converter circuit (2-1) and the 2nd BUCK converter circuit (2-2) is connected to load (7).
2. according to a kind of switch power module parallel operation device claimed in claim 1, it is characterized in that: a described BUCK converter circuit (2-1) is by field effect transistor Q1, Schottky diode D1, inductance L 1, resistance R 1, R2, R3, R5 and R18, potentiometer R4, polar capacitor C1 and C3, and polarity free capacitor C2 and C4 formation; The output 24V of the source electrode of described field effect transistor Q1 and described 24V main power source module (1) joins, the grid of described field effect transistor Q1 and the first pwm control circuit (5-1) join, one end of the drain electrode of described field effect transistor Q1 and inductance L 1 and the negative pole of Schottky diode D1 join, the positive pole of the other end of described inductance L 1 and polar capacitor C1, the end of polarity free capacitor C2, one end of resistance R 1, one end of resistance R 2 and an end of resistance R 5 join, the other end of the other end of described resistance R 1 and resistance R 2, one end of resistance R 18, the positive pole of polar capacitor C3, the end of a polarity free capacitor C4 and end of resistance R 3 joins and be the output OUTPUT1 of a described BUCK converter circuit (2-1), the other end of the other end of described resistance R 5 and resistance R 18 all joins with the first amplifier circuit (3-1), the stiff end of the other end of described resistance R 3 and potentiometer R4 all joins the positive pole of described Schottky diode D1 with the first pwm control circuit (5-1), the negative pole of polar capacitor C1, the other end of polarity free capacitor C2, the negative pole of polar capacitor C3, the equal ground connection of another stiff end of the other end of polarity free capacitor C4 and potentiometer R4.
3. according to a kind of switch power module parallel operation device claimed in claim 2, it is characterized in that: described the first amplifier circuit (3-1) is made of first instrument amplifier chip INA128P, resistance R 19 and potentiometer R22; The pin 1 of described first instrument amplifier chip INA128P joins with an end of resistance R 19, the stiff end of the other end of described resistance R 19 and potentiometer R22 joins, the pin 8 of another stiff end of described potentiometer R22 and first instrument amplifier chip INA128P joins, the pin 2 of described first instrument amplifier chip INA128P joins with the other end of resistance R 5, the pin 3 of described first instrument amplifier chip INA128P joins with the other end of resistance R 18, the pin 4 of described first instrument amplifier chip INA128P joins with the cathode output end-12V of ± 12V accessory power supply module (6), the pin 6 of described first instrument amplifier chip INA128P and the first resistance sampling flow equalizing circuit (4-1) join, the pin 7 of described first instrument amplifier chip INA128P joins pin 5 ground connection of described first instrument amplifier chip INA128P with the cathode output end+12V of ± 12V accessory power supply module (6).
4. according to a kind of switch power module parallel operation device claimed in claim 3, it is characterized in that: described the first resistance sampling flow equalizing circuit (4-1) is by the first operational amplifier chip 4558, switching diode D2, polarity free capacitor C8, potentiometer R21, and resistance R 8, R9 and R20 consist of; The pin 1 of described the first operational amplifier chip 4558, the end of polarity free capacitor C8 and the negative pole of switching diode D2 all join with the first pwm control circuit (5-1), the pin 2 of described the first operational amplifier chip 4558 and the other end of polarity free capacitor C8, the positive pole of switching diode D2, the stiff end of one end of resistance R 20 and potentiometer R21 joins, the pin 3 of described the first operational amplifier chip 4558 joins with an end of resistance R 9, the pin 4 of described the first operational amplifier chip 4558 joins with the cathode output end-12V of ± 12V accessory power supply module (6), the pin 5 of described the first operational amplifier chip 4558 and an end of resistance R 8 all join with the current-sharing end of the second resistance sampling flow equalizing circuit (4-2), another stiff end of the other end of described resistance R 8 and potentiometer R21 all joins with the pin 6 of first instrument amplifier chip INA128P, the pin 6 of described the first operational amplifier chip 4558 and pin 7 all join with the other end of resistance R 9, the pin 8 of described the first operational amplifier chip 4558 joins the other end ground connection of described resistance R 20 with the cathode output end+12V of ± 12V accessory power supply module (6).
5. according to a kind of switch power module parallel operation device claimed in claim 4, it is characterized in that: described the first pwm control circuit (5-1) is by the first comparator chip TL494, polarity free capacitor C5, C6 and C7, and resistance R 7, R10, R11, R12, R13, R14, R15, R16 and R17 consist of; The pin 1 of described the first comparator chip TL494 joins with the other end of resistance R 3 and the stiff end of potentiometer R4, the pin 2 of described the first comparator chip TL494 and an end of resistance R 16, one end of resistance R 17, one end of resistance R 11 and an end of resistance R 10 join, the pin 3 of described the first comparator chip TL494 joins with the other end of resistance R 17 and the end of polarity free capacitor C7, the other end of the other end of described resistance R 16 and polarity free capacitor C7 joins, the pin 5 of described the first comparator chip TL494 joins with the end of polarity free capacitor C6, the pin 6 of described the first comparator chip TL494 joins with an end of resistance R 12, the pin 8 of described the first comparator chip TL494 and pin 11 all join with an end of resistance R 13 and the end of polarity free capacitor C5, the pin 12 of described the first comparator chip TL494 and an end of resistance R 14 all join with the output 24V of described 24V main power source module (1), the other end of described resistance R 14, the other end of the other end of resistance R 13 and polarity free capacitor C5 all joins with the grid of field effect transistor Q1, the pin 14 of described the first comparator chip TL494 joins with the other end of resistance R 11 and an end of resistance R 15, the pin 15 of described the first comparator chip TL494 joins with the other end of resistance R 15, one end of the other end of described resistance R 10 and resistance R 7 all with the pin 1 of described the first operational amplifier chip 4558, the end of polarity free capacitor C8 and the negative pole of switching diode D2 join, the pin 4 of described the first comparator chip TL494, pin 7, pin 9, pin 10, the other end of pin 13 and pin 16 and capacitor C 6, the equal ground connection of the other end of the other end of resistance R 7 and resistance R 12.
6. according to a kind of switch power module parallel operation device claimed in claim 1, it is characterized in that: described the 2nd BUCK converter circuit (2-2) is by field effect transistor Q2, Schottky diode D3, inductance L 2, resistance R 23, R24, R25, R27 and R40, potentiometer R26, polar capacitor C9 and C11, and polarity free capacitor C10 and C12 formation; The output 24V of the source electrode of described field effect transistor Q2 and described 24V main power source module (1) joins, the grid of described field effect transistor Q2 and the second pwm control circuit (5-2) join, one end of the drain electrode of described field effect transistor Q2 and inductance L 2 and the negative pole of Schottky diode D3 join, the positive pole of the other end of described inductance L 2 and polar capacitor C9, the end of polarity free capacitor C10, one end of resistance R 23, one end of resistance R 24 and an end of resistance R 27 join, the other end of the other end of described resistance R 23 and resistance R 24, one end of resistance R 238, the positive pole of polar capacitor C11, the end of a polarity free capacitor C12 and end of resistance R 25 joins and be the output OUTPUT2 of described the 2nd BUCK converter circuit (2-2), the other end of the other end of described resistance R 27 and resistance R 238 all joins with the second amplifier circuit (3-2), the stiff end of the other end of described resistance R 25 and potentiometer R26 all joins the positive pole of described Schottky diode D3 with the second pwm control circuit (5-2), the negative pole of polar capacitor C9, the other end of polarity free capacitor C10, the negative pole of polar capacitor C11, the equal ground connection of another stiff end of the other end of polarity free capacitor C12 and potentiometer R26.
7. according to a kind of switch power module parallel operation device claimed in claim 6, it is characterized in that: described the second amplifier circuit (3-2) is made of second instrument amplifier chip INA128P and resistance R 41; The pin 1 of described second instrument amplifier chip INA128P joins with an end of resistance R 41, the pin 8 of the other end of described resistance R 41 and second instrument amplifier chip INA128P joins, the pin 2 of described second instrument amplifier chip INA128P joins with the other end of resistance R 5, the pin 3 of described second instrument amplifier chip INA128P joins with the other end of resistance R 18, the pin 4 of described second instrument amplifier chip INA128P joins with the cathode output end-12V of ± 12V accessory power supply module (6), the pin 6 of described second instrument amplifier chip INA128P and the second resistance sampling flow equalizing circuit (4-2) join, the pin 7 of described second instrument amplifier chip INA128P joins pin 5 ground connection of described second instrument amplifier chip INA128P with the cathode output end+12V of ± 12V accessory power supply module (6).
8. according to a kind of switch power module parallel operation device claimed in claim 7, it is characterized in that: described the second resistance sampling flow equalizing circuit (4-2) is by the second operational amplifier chip 4558, switching diode D4, polarity free capacitor C16, potentiometer R43, and resistance R 30, R31 and R42 consist of; The pin 1 of described the second operational amplifier chip 4558, the end of polarity free capacitor C16 and the negative pole of switching diode D4 all join with the second pwm control circuit (5-2), the pin 2 of described the second operational amplifier chip 4558 and the other end of polarity free capacitor C16, the positive pole of switching diode D4, the stiff end of one end of resistance R 42 and potentiometer R43 joins, the pin 3 of described the second operational amplifier chip 4558 joins with an end of resistance R 31, the pin 4 of described the second operational amplifier chip 4558 joins with the cathode output end-12V of ± 12V accessory power supply module (6), the pin 5 of described the second operational amplifier chip 4558 and an end of resistance R 30 all join with the current-sharing end of the first resistance sampling flow equalizing circuit (4-1), another stiff end of the other end of described resistance R 30 and potentiometer R43 all joins with the pin 6 of second instrument amplifier chip INA128P, the pin 6 of described the second operational amplifier chip 4558 and pin 7 all join with the other end of resistance R 31, the pin 8 of described the second operational amplifier chip 4558 joins the other end ground connection of described resistance R 42 with the cathode output end+12V of ± 12V accessory power supply module (6).
9. according to a kind of switch power module parallel operation device claimed in claim 8, it is characterized in that: described the second pwm control circuit (5-2) is by the second comparator chip TL494, polarity free capacitor C13, C14 and C15, and resistance R 29, R32, R33, R34, R35, R36, R37, R38 and R39 consist of; The pin 1 of described the second comparator chip TL494 joins with the other end of resistance R 3 and the stiff end of potentiometer R4, the pin 2 of described the second comparator chip TL494 and an end of resistance R 38, one end of resistance R 39, one end of resistance R 33 and an end of resistance R 32 join, the pin 3 of described the second comparator chip TL494 joins with the other end of resistance R 39 and the end of polarity free capacitor C15, the other end of the other end of described resistance R 38 and polarity free capacitor C15 joins, the pin 5 of described the second comparator chip TL494 joins with the end of polarity free capacitor C14, the pin 6 of described the second comparator chip TL494 joins with an end of resistance R 34, the pin 8 of described the second comparator chip TL494 and pin 11 all join with an end of resistance R 35 and the end of polarity free capacitor C13, the pin 12 of described the second comparator chip TL494 and an end of resistance R 36 all join with the output 24V of described 24V main power source module (1), the other end of described resistance R 36, the other end of the other end of resistance R 35 and polarity free capacitor C13 all joins with the grid of field effect transistor Q2, the pin 14 of described the second comparator chip TL494 joins with the other end of resistance R 33 and an end of resistance R 37, the pin 15 of described the second comparator chip TL494 joins with the other end of resistance R 37, one end of the other end of described resistance R 32 and resistance R 29 all with the pin 1 of described the second operational amplifier chip 4558, the end of polarity free capacitor C16 and the negative pole of switching diode D4 join, the pin 4 of described the second comparator chip TL494, pin 7, pin 9, pin 10, the other end of pin 13 and pin 16 and capacitor C 14, the equal ground connection of the other end of the other end of resistance R 29 and resistance R 34.
10. according to arbitrary described a kind of switch power module parallel operation device in the claim 1～9, it is characterized in that: described load (7) is the slide rheostat of 0～100 Ω for Standard resistance range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220504678 CN202840513U (en) | 2012-09-27 | 2012-09-27 | Switching power supply module parallel connection power supply device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220504678 CN202840513U (en) | 2012-09-27 | 2012-09-27 | Switching power supply module parallel connection power supply device |
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| CN202840513U true CN202840513U (en) | 2013-03-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849562A (en) * | 2015-05-04 | 2015-08-19 | 华为技术有限公司 | Device and method for detecting impedance abnormality of power supply system |
| CN106202692A (en) * | 2016-06-30 | 2016-12-07 | 温州大学 | Parallel operation system current-sharing method of evaluating performance based on current-sharing standard deviation matrix 2 norm |
| CN108039154A (en) * | 2017-12-07 | 2018-05-15 | 深圳市华星光电技术有限公司 | Time schedule controller and its core power circuit, liquid crystal display device |
-
2012
- 2012-09-27 CN CN 201220504678 patent/CN202840513U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849562A (en) * | 2015-05-04 | 2015-08-19 | 华为技术有限公司 | Device and method for detecting impedance abnormality of power supply system |
| CN104849562B (en) * | 2015-05-04 | 2017-11-17 | 华为技术有限公司 | Detect the abnormal apparatus and method of supply system impedance |
| CN106202692A (en) * | 2016-06-30 | 2016-12-07 | 温州大学 | Parallel operation system current-sharing method of evaluating performance based on current-sharing standard deviation matrix 2 norm |
| CN106202692B (en) * | 2016-06-30 | 2019-02-22 | 温州大学 | Parallel operation system current sharing energy evaluation method based on equal 2 norm of flow standard difference matrix |
| CN108039154A (en) * | 2017-12-07 | 2018-05-15 | 深圳市华星光电技术有限公司 | Time schedule controller and its core power circuit, liquid crystal display device |
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Granted publication date: 20130327 Termination date: 20130927 |