CN209046527U - A kind of controlled delay control circuit of power supply module multiple-channel output - Google Patents

Abstract

The utility model relates to a kind of controlled delay control circuits of power supply module multiple-channel output, including ON-OFF control circuit, forbid control circuit, supply convertor, delay control circuit and driving circuit, the output end of the ON-OFF control circuit and the power end of delay control circuit connect, the output end of ON-OFF control circuit is reference voltage output terminal, described one end for forbidding control circuit is connect with reference voltage output terminal, its other end and supply convertor forbid end to connect, the input terminal of the driving circuit and the output end of delay control circuit connect, its control terminal is connect with control circuit is forbidden, its output end is connect with reference voltage output terminal.The controlled delay control circuit of power supply module multiple-channel output described in utility model, can in booting according to the controlled delay effectively controlled with uncontrolled two states between two-way or multichannel secondary power supply output voltage whether, keep its delay function and delay time adjustable.

Description

A kind of controlled delay control circuit of power supply module multiple-channel output

Technical field

The utility model relates to power supply module fields, and in particular to a kind of controlled delays time to control electricity of power supply module multiple-channel output Road.

Background technique

Power supply module as secondary system power supply single machine it is integrated be widely used in space flight, aviation, ship, weapons, electronics, In the military-civil electronic system such as railway, communication, medical electronics, industrial automation equipment.In power supply module starting up, that is, defeated When entering power supply electrifying, the multiple-channel output voltage timing requirements of secondary power supply have a significant impact to load machine system.Output voltage Electrifying timing sequence difference can cause different influences to primary power source and system load, between powering on or power on simultaneously such as multiple-channel output Every biggish inrush current can be generated very much in short-term, primary power source and secondary power supply damage will lead to when serious；According to difference System load characteristic requirement, can have specific electrifying timing sequence requirement to each road output voltage.

Utility model content

The purpose of this utility model is to provide a kind of controlled delay control circuits of power supply module multiple-channel output, in booting Whether according to the controlled delay effectively controlled with uncontrolled two states between two-way or multichannel secondary power supply output voltage, make it Delay function and delay time are adjustable, reduce inrush current and influence on the impact of primary power source.

To achieve the above object, the utility model uses following technical scheme:

A kind of controlled delay control circuit of power supply module multiple-channel output, including ON-OFF control circuit, forbid control circuit, electricity Source converter, delay control circuit and driving circuit, the output end of the ON-OFF control circuit and the power supply of delay control circuit End connection, the output end of ON-OFF control circuit are reference voltage output terminal, described one end for forbidding control circuit and reference voltage Output end connection, the other end and supply convertor forbid end to connect, input terminal and the delays time to control electricity of the driving circuit The output end on road connects, and control terminal is connect with control circuit is forbidden, and output end is connect with reference voltage output terminal.

As a further improvement of the above technical scheme:

The ON-OFF control circuit includes resistance R1, R2, R3, capacitor C1, and one end ground connection of switch S, the switch S are opened The other end for closing S is successively connect through resistance R1, resistance R3 with control circuit is forbidden, and the capacitor C1 is connected in parallel on the two of resistance R3 End, one end of the resistance R2 are connected at the node between resistance R3 and capacitor C1, and the other end of resistance R2 is reference voltage Output end, the output end of supply convertor are delay voltage output end.

Described to forbid control circuit include photoelectrical coupler N1, N2, and the first input end of photoelectrical coupler N1 is through resistance R4 It is connect with reference voltage end, the second input terminal is connect with the first output end of photoelectrical coupler N2, the photoelectrical coupler N1 The first output end ground connection, second output terminal through supply convertor be delayed voltage end connect, the second of photoelectrical coupler N2 Output end is connect with ON-OFF control circuit, and the input terminal of photoelectrical coupler N2 is connect with driving circuit.

The driving circuit includes switching tube K1, K2, and resistance R9, capacitor C2, the grid of the switching tube K1 is through resistance R6 It is connect with the output end of delay control circuit, the drain electrode of switching tube K1 is connect through resistance R8 with control circuit is forbidden, switching tube K2 Grid connect with the drain electrode of switching tube K1, the source electrode of switching tube K1, K2 ground connection, one end of the resistance R9 and switching tube K1's Drain electrode connection, other end ground connection, the capacitor C2 are connected in parallel on the both ends of resistance R9.

The delay control circuit uses the chip of model NE555.

As shown from the above technical solution, the controlled delay control circuit of power supply module multiple-channel output described in the utility model, It can effectively be controlled between two-way or multichannel secondary power supply output voltage according to controlled with uncontrolled two states in booting Whether delay, keep its delay function and delay time adjustable.Under the action of power supply output-controlled delay control circuit, one can be made Road or multiple-channel output voltage require again row to start after certain all the way output voltage starting according to delay time, on the one hand can reduce defeated Enter surge current, reducing the impact on primary power source influences；It on the other hand, can be according to system load characteristic or function debugging need Delay function is configured.The output-controlled delay control circuit of multiple power supplies described herein is suitable for various secondary power supplies.

Detailed description of the invention

Fig. 1 is the circuit diagram of the utility model.

Specific embodiment

The utility model is described further with reference to the accompanying drawing:

As shown in Figure 1, the controlled delay control circuit of power supply module multiple-channel output of the present embodiment, including ON-OFF control circuit 1, forbid control circuit 2, supply convertor 5, delay control circuit 3 and driving circuit 4, the output end of ON-OFF control circuit 1 with The power end of delay control circuit 3 connects, and the output end of ON-OFF control circuit 1 is reference voltage output terminal, forbids control circuit 2 One end connect with reference voltage output terminal, the other end and supply convertor 5 forbid end to connect, the input of driving circuit 4 End is connect with the output end of delay control circuit 3, and control terminal is connect with control circuit 2 is forbidden, output end and reference voltage Output end connection.

The end reference voltage V1 is the first output voltage of power supply module, and supply convertor 5 and its output delay voltage V2 are Output voltage afterwards.Supply convertor 5 is negative logic control, that is, forbids that power supply after (ON/OFF) ground connection is held to have output, one end connects It connects and forbids control circuit 2.Therefore, switch S is under high impedance status, and reference voltage V1 is first powered on, after delays time to control, electricity Source converter 5 forbids holding (ON/OFF) ground connection, output delay voltage V2；Switch S is under low impedance state, reference voltage V1 After powering on, supply convertor 5 forbids end (ON/OFF) to be directly grounded, and exports delay voltage V2, substantially no-delay.

ON-OFF control circuit 1 includes resistance R1, R2, R3, and capacitor C1, switch S, one end ground connection of switch S, switch S's is another One end is successively connect through resistance R1, resistance R3 with control circuit 2 is forbidden, and capacitor C1 is connected in parallel on the both ends of resistance R3, resistance R2's One end is connected at the node between resistance R3 and capacitor C1, and the other end of resistance R2 is reference voltage V1 output end, and power supply becomes The output end of parallel operation 5 is delay voltage V2 output end.

Forbidding control circuit 2 includes photoelectrical coupler N1, N2, and the first input end of photoelectrical coupler N1 is through resistance R4 and ginseng Voltage end connection is examined, the second input terminal of photoelectrical coupler N1 is connect with the first output end of photoelectrical coupler N2, photoelectric coupling The first output end of device N1 is grounded, and the second output terminal of photoelectrical coupler N1 is connect through supply convertor 5 with the delay end voltage V2, The second output terminal of photoelectrical coupler N2 is connect with ON-OFF control circuit 1, input terminal and the driving circuit 4 of photoelectrical coupler N2 Output end connection.

Driving circuit 4 includes switching tube K1, K2, and the grid of resistance R9, capacitor C2, switching tube K1 are controlled through resistance R6 and delay The output end out connection of circuit 3 processed, the drain electrode of switching tube K1 are connect through resistance R8 with the first input end of photoelectrical coupler N2, The grid of switching tube K2 is connect with the drain electrode of switching tube K1, the source electrode ground connection of switching tube K1, K2, one end of resistance R9 and switching tube The drain electrode of K1 connects, and the other end ground connection of resistance R9, capacitor C2 is connected in parallel on the both ends of resistance R9, the drain and photoelectricity of switching tube K2 The second input terminal of coupler N2 connects.Wherein, switch S is under high impedance status, the pulse letter that delay control circuit 3 exports Number NMOS tube K1 is caused first to be connected to turn off afterwards, further controls after NMOS tube K2 is first turned off and be connected.Switch S is in low impedance state Under, delay control circuit 3 is constantly on state without output, NMOS tube K2.

General time base circuit such as NE555 Shi Ji electricity can be used according to delay needs (such as delay 3 seconds~5 seconds) in the delay circuit Road etc. can control delay time parameter by adjusting capacitor C capacitance, reach delay requirement.One end VCC connection switch control electricity Divider resistance one end in road 1 is, it can be achieved that when downward switch S high Low ESR whether function.Switch S is under high impedance status, VCC normal power supply, delay circuit work normally, and export a pulse signal, and delay function is normal；Switch S is in low impedance state Under, VCC does not work lower than normal power supply requirement, delay circuit, no output, therefore no-delay function.

ON-OFF control circuit 1 is closed by setting switch S or open circuit, Low ESR or high impedance status is realized, in low-resistance No-delay function is exported under anti-state, and there is output-controlled delay function under high impedance status；When delay control circuit 3 passes through Sequence controls chip and peripheral circuit realizes the setting of delay time, and driving circuit 4 is realized conducting and shutdown by metal-oxide-semiconductor, forbidden Control circuit 2 realizes being isolated for input and output by optocoupler, and control supply convertor 5 when need to be delayed forbids end (ON/ OFF).Reference voltage V1 is the output voltage all the way of power supply module, as delay references object, supply convertor 5 and its defeated Delay voltage V2 is the voltage for needing to be delayed out.

The utility model circuit structure is simple, can be realized two tunnels or the output-controlled delay function of multiple power supplies, improves Circuit safety and adaptability, and realize the delay function of load.Wherein, switch S is under high impedance status, driving electricity The NMOS tube K2 on road 4 is connected after being first turned off, thus photoelectrical coupler N1 and N2 be first turned off after be connected, interval time is exactly to be delayed Time.Switch S is under low impedance state, and the NMOS tube K2 of driving circuit 4 is constantly on state, therefore photoelectric coupling Device N1 and N2 are also constantly on state, no-delay function.

Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this The various changes and improvements that the technical solution of utility model is made should all fall into the protection that the utility model claims book determines In range.

Claims (5)

1. a kind of controlled delay control circuit of power supply module multiple-channel output, it is characterised in that: including ON-OFF control circuit, forbid controlling Circuit, supply convertor, delay control circuit and driving circuit processed, output end and the delays time to control electricity of the ON-OFF control circuit The power end on road connects, and the output end of ON-OFF control circuit is reference voltage output terminal, described one end for forbidding control circuit with Reference voltage output terminal connection, the other end and supply convertor forbid end to connect, the input terminal of the driving circuit with prolong When control circuit output end connection, control terminal connect with control circuit is forbidden, output end and reference voltage output terminal company It connects.

2. the controlled delay control circuit of power supply module multiple-channel output according to claim 1, it is characterised in that: the switch Control circuit includes resistance R1, R2, R3, capacitor C1, and one end of switch S, the switch S are grounded, and the other end of switch S successively passes through Resistance R1, resistance R3 are connect with control circuit is forbidden, and the capacitor C1 is connected in parallel on the both ends of resistance R3, one end of the resistance R2 It is connected at the node between resistance R3 and capacitor C1, the other end of resistance R2 is reference voltage output terminal, supply convertor Output end is delay voltage output end.

3. the controlled delay control circuit of power supply module multiple-channel output according to claim 1, it is characterised in that: described to forbid Control circuit includes photoelectrical coupler N1, N2, and the first input end of photoelectrical coupler N1 is connect through resistance R4 with reference voltage end, Its second input terminal is connect with the first output end of photoelectrical coupler N2, the first output end ground connection of the photoelectrical coupler N1, Its second output terminal is connect through supply convertor with delay voltage end, second output terminal and the switch control electricity of photoelectrical coupler N2 Road connection, the input terminal of photoelectrical coupler N2 are connect with driving circuit.

4. the controlled delay control circuit of power supply module multiple-channel output according to claim 1, it is characterised in that: the driving Circuit includes switching tube K1, K2, resistance R9, and the grid of capacitor C2, the switching tube K1 is through resistance R6 and delay control circuit Output end connection, the drain electrode of switching tube K1 are connect through resistance R8 with control circuit is forbidden, the grid and switching tube K1 of switching tube K2 Drain electrode connection, switching tube K1, K2 source electrode ground connection, one end of the resistance R9 is connect with the drain electrode of switching tube K1, another End ground connection, the capacitor C2 are connected in parallel on the both ends of resistance R9.

5. the controlled delay control circuit of power supply module multiple-channel output according to claim 1, it is characterised in that: the delay Control circuit uses the chip of model NE555.