A dual-channel output delay variable power supply module

Abstract

The present invention discloses a dual-channel output delay variable power supply module, which is composed of a metal shell, a DC / DC power conversion circuit, an output delay variable control circuit, and an input and output common mode filter circuit integrated into one body. The metal shell is fully shielded in a structural manner, and filter circuits are added to the input and output ends of the power supply to achieve an extremely low ripple index. The DC / DC power conversion circuit realizes input and output electrical isolation and output power and voltage conversion functions. The output delay variable control circuit realizes the dual-channel output delay variable control and adjustable function of the power supply module.

Description

Technical Field

[0001] The invention relates to a dual-channel output delay variable power supply module. Background Art

[0002] In some occasions with special requirements, the equipment has a variable output delay requirement for the power supply module, which can be used as a control instruction of the equipment or for other special requirements. Generally, power supply modules are voltage stabilization mode, the output voltage is in a stable state, and the adjustable function is externally adjusted. It is difficult to make the module self-adjustable. In view of this situation, a dual-channel output delay variable power supply module is developed, which has small size, fewer components, low cost and modular design. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a dual-channel output delay variable power supply module, which adopts a fully metal shielded shell structure, adds filtering circuits at the input and output ends to make it have better electromagnetic compatibility, and a DC / DC power conversion circuit to achieve input and output electrical isolation, output power and voltage conversion functions, and the output can achieve the function of outputting different voltages and different powers. The output delay variable control circuit realizes the output delay adjustable control function.

[0004] To solve the above problems, the present invention adopts the following technical solutions:

[0005] A dual-channel output delay variable power supply module with input and output isolation. The power supply module adopts a fully metal shielded shell structure, and filter circuits are added to the input and output ends to make it have better electromagnetic compatibility. The DC / DC power conversion circuit realizes input and output electrical isolation, output power and voltage conversion functions, and each output can realize the function of outputting different voltages and different powers. The output delay variable control circuit realizes the adjustable output delay control function. The power supply module has strong electromagnetic compatibility, adjustable input start-up control, ultra-high efficiency, and high reliability. The power input voltage covers DC9-DC80V, and each output voltage covers DC3.3V-DC36V. Its maximum output power is 25W.

[0006] The power input and output are isolated, and the isolation voltage is not less than DC500V.

[0007] The power input and output ends are equipped with an integrated filter circuit and a fully metal shielded shell design, which has good electromagnetic compatibility.

[0008] The DC / DC power conversion circuit realizes the output power and voltage conversion function, and each output can realize the output of different voltage functions.

[0009] The output delay variable control circuit realizes the adjustable output delay control function characteristics.

[0010] The power input voltage covers DC9-DC80V, each output voltage covers DC3.3V-DC36V, and its maximum output power is 25W.

[0011] The existing output voltage regulated power supply module solution is shown in Figure 1 And the output voltage regulation circuit diagram is shown in Figure 2 .

[0012] Traditional power modules are generally composed of a diode part inside the optocoupler device V8 and an output reference chip V7 (TL431) to form a voltage stabilization circuit. Figure 2 When the output voltage of the power module is higher than the set output voltage, the reference chip TL431 connected to the output end of the optocoupler is internally turned on, and the internal diode of the optocoupler is turned on. The internal light emits light to control the working state of the other transistor inside the optocoupler. The collector of the internal transistor of the optocoupler is connected to the feedback end of the control chip, and the emitter is connected to the ground of the control chip. When the output voltage of the power module is lower than the set output voltage, the reference chip TL431 connected to the output end of the optocoupler is internally turned on, and the optocoupler does not work. This cycle continues to realize closed-loop feedback, forming the basic principle of voltage regulation of the power module.

[0013] Such a traditional power module voltage stabilizing circuit is difficult to realize the adjustable output delay control function.

[0014] To solve the above problems, a dual-channel output delay variable power supply module is provided, which adopts a fully metal shielded shell structure, adds filter circuits at the input and output ends to make it have better electromagnetic compatibility, and a DC / DC power conversion circuit realizes input and output electrical isolation, output power and voltage conversion functions, and the output can realize the function of outputting different voltages and different powers. The output delay variable control circuit realizes the adjustable output delay control function.

[0015] See the circuit schematic diagram Figure 3 .

[0016] Output delay variable control circuit see Figure 4 .

[0017] A pre-stabilization circuit R56 (51K), D6 (12V voltage regulator) and Q8 (100V transistor) are established at the input end to provide a stable 12V output voltage. One group charges the gate end of the MOS tube Q7 through R57 and C55 to provide a delay controllable circuit. The other group is connected to the drain of the MOS tube Q7 connected in series through R58, optocoupler U8 and U9. The source of the MOS tube Q7 is connected in series with D8 (5V voltage regulator) to the input ground. When R57 charges C55, When the voltage value of capacitor C55 is higher than the gate voltage of MOS tube Q7, MOS tube Q7 is turned on, that is, another group of loops R58, optocouplers U8, U9, MOS tubes Q7 and D8 loops are turned on, the light-emitting diodes inside optocouplers U8 and U9 are partially illuminated and turned on, and the triode part at the other end is also turned on, short-circuiting R14 and R19 in the two output loops, and the total resistance of the voltage-dividing resistors in the two output voltage-stabilizing loops becomes lower, thereby realizing the dual-channel output delay adjustable control function.

[0018] The common-mode inductors of the filters at the input and output ends of the power module are made of ultra-microcrystalline materials, and due to the integrated design, they achieve optimal performance matching, achieve better filtering in a smaller volume, and have good anti-conduction electromagnetic compatibility.

[0019] For the outline of the power module, see Figure 5 .

[0020] Beneficial effects:

[0021] 1. The power module shell adopts metal shell, and the input and output ends are added with filter circuits to have good electromagnetic compatibility.

[0022] 2. The power module output delay variable control circuit realizes the output delay adjustable control function.

[0023] 3. Standardized and serialized product design can adapt to most input voltage, output voltage, power and other parameter requirements, and has wider adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the circuit diagram of the traditional output voltage-stabilized power supply module;

[0025] Figure 2 This is the circuit diagram of the traditional output voltage stabilization circuit control part;

[0026] Figure 3 A circuit diagram of a dual-channel output delay variable power supply module;

[0027] Figure 4 To specifically realize the output delay variable control circuit diagram;

[0028] Figure 5 and Figure 6 This is the appearance diagram of the power module. DETAILED DESCRIPTION

[0029] Example 1

[0030] A dual-channel output delay variable power supply module with input and output isolation. The power supply module adopts a fully metal shielded shell structure, and filter circuits are added to the input and output ends to make it have better electromagnetic compatibility. The DC / DC power conversion circuit realizes input and output electrical isolation, output power and voltage conversion functions, and each output can realize the function of outputting different voltages and different powers. The output delay variable control circuit realizes the adjustable output delay control function. The power supply module has strong electromagnetic compatibility, adjustable input start-up control, ultra-high efficiency, and high reliability. The power input voltage covers DC9-DC80V, and each output voltage covers DC3.3V-DC36V. Its maximum output power is 25W.

[0031] The power input and output are isolated, and the isolation voltage is not less than DC500V.

[0032] The power input and output ends are equipped with an integrated filter circuit and a fully metal shielded shell design, which has good electromagnetic compatibility.

[0033] The DC / DC power conversion circuit realizes the output power and voltage conversion function, and each output can realize the output of different voltage functions.

[0034] The output delay variable control circuit realizes the adjustable output delay control function characteristics.

[0035] The power input voltage covers DC9-DC80V, each output voltage covers DC3.3V-DC36V, and its maximum output power is 25W.

[0036] The existing output voltage regulated power supply module solution is shown in Figure 1 And the output voltage regulation circuit diagram is shown in Figure 2 .

[0037] Traditional power modules are generally composed of a diode part inside the optocoupler device V8 and an output reference chip V7 (TL431) to form a voltage stabilization circuit. Figure 2 When the output voltage of the power module is higher than the set output voltage, the reference chip TL431 connected to the output end of the optocoupler is internally turned on, and the internal diode of the optocoupler is turned on. The internal light emits light to control the working state of the other transistor inside the optocoupler. The collector of the internal transistor of the optocoupler is connected to the feedback end of the control chip, and the emitter is connected to the ground of the control chip. When the output voltage of the power module is lower than the set output voltage, the reference chip TL431 connected to the output end of the optocoupler is internally turned on, and the optocoupler does not work. This cycle continues to realize closed-loop feedback, forming the basic principle of voltage regulation of the power module.

[0038] Such a traditional power module voltage stabilizing circuit is difficult to realize the adjustable output delay control function.

[0039] To solve the above problems, a dual-channel output delay variable power supply module is provided, which adopts a fully metal shielded shell structure, adds filter circuits at the input and output ends to make it have better electromagnetic compatibility, and a DC / DC power conversion circuit realizes input and output electrical isolation, output power and voltage conversion functions, and the output can realize the function of outputting different voltages and different powers. The output delay variable control circuit realizes the adjustable output delay control function.

[0040] See the circuit schematic diagram Figure 3 .

[0041] Output delay variable control circuit see Figure 4 .

[0042] A pre-stabilization circuit R56 (51K), D6 (12V voltage regulator) and Q8 (100V transistor) are established at the input end to provide a stable 12V output voltage. One group charges the gate end of the MOS tube Q7 through R57 and C55 to provide a delay controllable circuit. The other group is connected to the drain of the MOS tube Q7 connected in series through R58, optocoupler U8 and U9. The source of the MOS tube Q7 is connected in series with D8 (5V voltage regulator) to the input ground. When R57 charges C55, When the voltage value of capacitor C55 is higher than the gate voltage of MOS tube Q7, MOS tube Q7 is turned on, that is, another group of loops R58, optocouplers U8, U9, MOS tubes Q7 and D8 loops are turned on, the light-emitting diodes inside optocouplers U8 and U9 are partially illuminated and turned on, and the triode part at the other end is also turned on, short-circuiting R14 and R19 in the two output loops, and the total resistance of the voltage-dividing resistors in the two output voltage-stabilizing loops becomes lower, thereby realizing the dual-channel output delay adjustable control function.

[0043] The common-mode inductors of the filters at the input and output ends of the power module are made of ultra-microcrystalline materials, and due to the integrated design, they achieve optimal performance matching, achieve better filtering in a smaller volume, and have good anti-conduction electromagnetic compatibility.

[0044] For the outline of the power module, see Figure 5 .

Claims

1. A dual-output delay variable power supply module, characterized in that: Input and output isolation, the power module adopts a fully metal shielded shell structure, filter circuits are added to the input and output ends to make it have better electromagnetic compatibility, DC / DC power conversion circuit realizes input and output electrical isolation, output power and voltage conversion function, each output can realize the function of outputting different voltages and different powers, the output delay variable control circuit realizes the adjustable output delay control function, the power input voltage covers DC9-DC80V, each output voltage covers DC3.3V-DC36V, and its maximum output power is 25W; Specifically, a pre-stabilization circuit is established at the input end, one end of the resistor R56 is connected to the collector of the 100V transistor Q8 and then connected to the DC input +Vin through an inductor, the other end of the resistor R56 is connected to the base of the 100V transistor Q8 and the negative electrode of the 12V voltage regulator D6, the positive electrode of the 12V voltage regulator D6 is connected to the input ground, and the emitter of the 100V transistor Q8 outputs a stable 12V output voltage, and the 12V output voltage is connected to the gate of the MOS tube Q7 and one end of the capacitor C55 through the resistor R57, and the other end of the capacitor C55 is connected to the positive electrode of the 5V voltage regulator D8. At the same time, the positive electrode of the 5V voltage regulator D8 is connected to the input ground; the negative electrode of the 5V voltage regulator D8 is connected to the source of the MOS tube Q7; the 12V output voltage Another group of resistors R58 are connected to the positive terminals of the series optocouplers U8 and U9, and the negative terminals of the series optocouplers U8 and U9 are connected to the drain of the MOS tube Q7; when the resistor R57 charges the capacitor C55 and the voltage value of the capacitor C55 is higher than the gate voltage of the MOS tube Q7, the MOS tube Q7 is turned on, that is, another group of loop resistors R58, optocouplers U8, optocouplers U9, MOS tube Q7 and MOS tube D8 are turned on, the light-emitting diodes inside the optocouplers U8 and U9 are partially illuminated and turned on, and the triode part at the other end is also turned on, short-circuiting the resistors R14 and R19 in the two output loops, and the total resistance values ​​of the voltage-dividing resistors in the two output voltage-stabilizing loops are respectively reduced, thereby realizing the dual-channel output delay adjustable control function.

2. A dual-output delay variable power supply module as described in claim 1, characterized in that: the power input and output are isolated, and the isolation voltage is not less than DC500V.

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