CN103532533B - A power supply sequence management circuit - Google Patents

A power supply sequence management circuit Download PDF

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CN103532533B
CN103532533B CN201210231007.5A CN201210231007A CN103532533B CN 103532533 B CN103532533 B CN 103532533B CN 201210231007 A CN201210231007 A CN 201210231007A CN 103532533 B CN103532533 B CN 103532533B
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power supply
resistance
circuit
diode
power
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CN103532533A (en
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龙海峰
尹升爱
姜丽婷
闫丽媛
黄玉平
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China Academy of Launch Vehicle Technology CALT
Beijing Research Institute of Precise Mechatronic Controls
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China Academy of Launch Vehicle Technology CALT
Beijing Research Institute of Precise Mechatronic Controls
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Abstract

The power supply timing that the invention belongs to SERVO CONTROL driver control circuit and power driving circuit in electromechanical servo system controls technical field, is specifically related to a kind of power supply timing management circuit.The wherein Parameter adjustable of RC delay circuit, at powered on moment, charging due to RC circuit, audion turns off, and driving chip does not has driving voltage, prevents misleading of powered on moment driving chip, only through time delay, after system power good, driving chip could be the most open-minded, is driven control signal amplifying；Lower electricity moment, electricity under control circuit power supply+3.3V is prior to drive circuit power supply+5V, close driving chip driving voltage, driving chip output high level, the power circuit portion of protection lower electricity moment.This circuit structure is simple, easily realizes, more flexible in the middle of PCB layout, takes up room less, and cost is relatively low, and service life is long, it is ensured that SERVO CONTROL driver is stable, reliably working, has the strongest versatility.

Description

一种供电时序管理电路A power supply sequence management circuit

技术领域 technical field

本发明属于机电伺服系统中伺服控制驱动器控制电路和功率驱动电路的供电时序控制技术领域，具体涉及一种供电时序管理电路。The invention belongs to the technical field of power supply sequence control of a servo control driver control circuit and a power drive circuit in an electromechanical servo system, and in particular relates to a power supply sequence management circuit.

背景技术 Background technique

在机电伺服系统中，伺服控制驱动器由伺服控制电路和功率驱动电路组成。为了保障伺服控制驱动器稳定、可靠工作，要求+3.3V电源先上电，待控制芯片工作稳定后，+5V电源再上电。因此，需要在电源供电电路的后端加入供电时序管理电路，以确保伺服+3.3V先于+5V上电。In the electromechanical servo system, the servo control driver is composed of a servo control circuit and a power drive circuit. In order to ensure the stable and reliable operation of the servo control driver, it is required to power on the +3.3V power supply first, and then power on the +5V power supply after the control chip works stably. Therefore, it is necessary to add a power supply sequence management circuit at the back end of the power supply circuit to ensure that the servo +3.3V is powered on before +5V.

通常的供电时序管理电路是通过数字时序管理电路实现精确控制的，虽然精度较高，但电路结构较为复杂，可靠性方面不及模拟时序管理电路，且在PCB布局当中不够灵活。The usual power supply timing management circuit is precisely controlled by a digital timing management circuit. Although the precision is high, the circuit structure is more complicated, the reliability is not as good as the analog timing management circuit, and it is not flexible enough in PCB layout.

发明内容 Contents of the invention

本发明的目的在于提供一种模拟的供电时序管理电路，以克服现有技术存在的上述不足。The object of the present invention is to provide an analog power supply sequence management circuit to overcome the above-mentioned shortcomings in the prior art.

为达到上述目的，本发明所采取的技术方案为：In order to achieve the above object, the technical scheme adopted in the present invention is:

一种供电时序管理电路，包括二极管D1、二极管D2、电容C1、电阻R1、电阻R2、电阻R3、稳压管、三极管、MOSFET功率管、电阻R4和驱动芯片；所述二极管D1与二极管D2同向串联，串联形成的电路两端分别接有+3.3V电源和电容C1，且二极管D1的负极与+3.3V电源连接，二极管D2的正极与电容C1的一端连接，电容C1的另一端接地；二极管D2的正极与电阻R1和电阻R2并联后形成的电阻的一端连接，电阻R1和电阻R2并联后形成的电阻的另一端分别与电阻R3的一端和MOSFET功率管的源极连接，电阻R3的另一端与三极管的集电极连接；稳压管的负极与二极管D2的正极连接，稳压管的正极与三极管的基极连接；三极管的集电极与MOSFET功率管的栅极连接，三极管的发射极接地；MOSFET功率管的漏极与电阻R4的一端连接，电阻R4的另一端与驱动芯片的OUT端口连接；驱动芯片的COM端口连接有+5V电源，驱动芯片的GND端口接地。A power supply timing management circuit, comprising diode D 1 , diode D 2 , capacitor C 1 , resistor R 1 , resistor R 2 , resistor R 3 , voltage regulator tube, triode, MOSFET power tube, resistor R 4 and a driver chip; The diode D 1 and the diode D 2 are connected in series in the same direction, and the two ends of the circuit formed in series are respectively connected to a +3.3V power supply and a capacitor C 1 , and the cathode of the diode D 1 is connected to the +3.3V power supply, and the anode of the diode D 2 is connected to the capacitor One end of C1 is connected, and the other end of capacitor C1 is grounded ; the anode of diode D2 is connected to one end of the resistor formed by parallel connection of resistor R1 and resistor R2 , and the other end of the resistor formed by parallel connection of resistor R1 and resistor R2 One end is connected to one end of the resistor R3 and the source of the MOSFET power tube, and the other end of the resistor R3 is connected to the collector of the triode ; the negative pole of the Zener tube is connected to the positive pole of the diode D2, and the positive pole of the Zener tube is connected to the transistor The base of the triode is connected to the gate of the MOSFET power tube, and the emitter of the triode is grounded ; the drain of the MOSFET power tube is connected to one end of the resistor R4 , and the other end of the resistor R4 is connected to the OUT port of the driver chip Connection; the COM port of the driver chip is connected to a +5V power supply, and the GND port of the driver chip is grounded.

所述驱动芯片的GND端口与COM端口之间连接有电容C2。A capacitor C 2 is connected between the GND port and the COM port of the driver chip.

所述MOSFET功率管的源极与电感的一端连接，电感的另一端连接有+5V电源。The source of the MOSFET power tube is connected to one end of the inductor, and the other end of the inductor is connected to a +5V power supply.

所述驱动芯片的型号为ULN2003。The model of the driver chip is ULN2003.

所述三极管的型号为3DG103。The model of the triode is 3DG103.

所述MOSFET功率管的型号为IRF7424。The model of the MOSFET power tube is IRF7424.

本发明所取得的有益效果为：The beneficial effects obtained by the present invention are:

本发明所述供电时序管理电路结构简单，容易实现，在PCB布局当中较为灵活，占用空间较小，成本较低，使用寿命长；且时序控制参数可以根据电路系统的实际工况进行调节，保证了伺服控制驱动器稳定、可靠工作，具有很强的通用性；The power supply timing management circuit of the present invention has a simple structure, is easy to implement, is more flexible in PCB layout, occupies less space, has low cost, and has a long service life; and the timing control parameters can be adjusted according to the actual working conditions of the circuit system to ensure The servo control driver is stable and reliable, and has strong versatility;

RC延时电路的参数可调，在上电瞬间，由于RC电路的充电，三极管关断，驱动芯片没有驱动电压，防止上电瞬间驱动芯片的误导通，只有经过延时，系统电源稳定后，驱动芯片才能正常的开通，对控制信号进行驱动放大；下电瞬间，当控制电路电源+3.3V先于驱动电路电源+5V下电，关闭驱动芯片驱动电压，驱动芯片输出高电平，保护下电瞬间的功率电路部分。The parameters of the RC delay circuit are adjustable. At the moment of power-on, due to the charging of the RC circuit, the triode is turned off, and the driver chip has no driving voltage to prevent the wrong conduction of the driver chip at the moment of power-on. Only after the delay and the system power supply is stable, The driver chip can be turned on normally, and the control signal can be driven and amplified; at the moment of power-off, when the control circuit power supply +3.3V is powered off before the drive circuit power supply +5V, the drive chip drive voltage is turned off, and the drive chip outputs a high level to protect the The power circuit part of the electric moment.

附图说明Description of drawings

图1为本发明所述供电时序管理电路结构图；FIG. 1 is a structural diagram of a power supply sequence management circuit according to the present invention;

图中：1、二极管D1；2、二极管D2；3、电容C1；4、电阻R1；5、电阻R2；6、电阻R3；7、电感；8、稳压管；9、三极管；10、MOSFET功率管；11、电容C2；12、电阻R4；13、驱动芯片。In the figure: 1. diode D 1 ; 2. diode D 2 ; 3. capacitor C 1 ; 4. resistor R 1 ; 5. resistor R 2 ; 6. resistor R 3 ; 7. inductance; 8. regulator tube; 9 1. Triode; 10. MOSFET power tube; 11. Capacitor C 2 ; 12. Resistor R 4 ; 13. Driver chip.

具体实施方式 detailed description

下面结合附图和具体实施例对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

如图1所示，本发明所述供电时序管理电路包括二极管D11、二极管D22、电容C13、电阻R14、电阻R25、电阻R36、电感7、稳压管8、三极管9、MOSFET功率管10、电容C211、电阻R412和驱动芯片13；As shown in Figure 1, the power supply timing management circuit of the present invention includes diode D 1 1, diode D 2 2, capacitor C 1 3, resistor R 1 4, resistor R 2 5, resistor R 3 6, inductor 7, voltage regulator Tube 8, transistor 9, MOSFET power tube 10, capacitor C 2 11, resistor R 4 12 and driver chip 13;

所述二极管D11与二极管D22同向串联，串联形成的电路两端分别接有+3.3V电源和电容C13，且二极管D11的负极与+3.3V电源连接，二极管D22的正极与电容C13的一端连接，电容C13的另一端接地；二极管D22的正极与电阻R14和电阻R25并联后形成的电阻的一端连接，电阻R14和电阻R25并联后形成的电阻的另一端分别与电阻R36的一端和MOSFET功率管10的源极连接，电阻R36的另一端与三极管9的集电极连接；稳压管8的负极与二极管D22的正极连接，稳压管8的正极与三极管9的基极连接；三极管9的集电极与MOSFET功率管10的栅极连接，三极管9的发射极接地；MOSFET功率管10的漏极与电阻R412的一端连接，电阻R412的另一端与驱动芯片13的OUT端口连接；驱动芯片13的COM端口连接有+5V电源，驱动芯片13的GND端口接地；The diode D 1 1 is connected in series with the diode D 2 2 in the same direction, and the two ends of the circuit formed in series are respectively connected to a +3.3V power supply and a capacitor C 1 3, and the cathode of the diode D 1 1 is connected to the +3.3V power supply, and the diode D The anode of 2 2 is connected to one end of capacitor C 1 3, and the other end of capacitor C 1 3 is grounded; the anode of diode D 2 2 is connected to one end of the resistor formed by parallel connection of resistor R 1 4 and resistor R 2 5, resistor R 1 4 and resistance R 2 5 are connected in parallel and the other end of the resistance formed is respectively connected with one end of resistance R 3 6 and the source of MOSFET power tube 10, and the other end of resistance R 3 6 is connected with the collector of triode 9; The negative pole of 8 is connected to the positive pole of diode D 2 2, the positive pole of Zener tube 8 is connected to the base of triode 9; the collector of triode 9 is connected to the grid of MOSFET power tube 10, and the emitter of triode 9 is grounded; MOSFET power The drain of the tube 10 is connected to one end of the resistor R412 , and the other end of the resistor R412 is connected to the OUT port of the driver chip 13; the COM port of the driver chip 13 is connected to a +5V power supply, and the GND port of the driver chip 13 is grounded;

所述驱动芯片13的GND端口与COM端口之间连接有电容C211；A capacitor C 2 11 is connected between the GND port and the COM port of the drive chip 13;

所述MOSFET功率管10的源极与电感7的一端连接，电感7的另一端连接有+5V电源；The source of the MOSFET power tube 10 is connected to one end of the inductance 7, and the other end of the inductance 7 is connected to a +5V power supply;

所述驱动芯片13的型号为ULN2003；所述三极管9的型号为3DG103；所述MOSFET功率管10的型号为IRF7424；The model of the driver chip 13 is ULN2003; the model of the triode 9 is 3DG103; the model of the MOSFET power tube 10 is IRF7424;

上电瞬间，驱动电路供电电源+5V先通过电感7滤波，由电容C13、电阻R14、电阻R25构成的参数可调的RC延时电路将电容C13正极的电压延时建立，在电容C13充满电之前，三极管9关闭，致使MOSFET功率管10也关闭，驱动芯片13没有驱动电压，不能工作，从而保证由+3.3V供电的控制电路先进入工作状态，待电容C13充满电后，三极管9打开，从而使电阻R36两端产生压降，致使MOSFET功率管10打开，驱动芯片13有驱动电压，可以正常工作，对控制信号进行驱动放大；下电瞬间，当控制电路电源+3.3V先于驱动电路电源+5V下电，由于稳压管8为+3.3V，当电容C13放电，使三极管9关闭，致使MOSFET功率管10也关闭，驱动芯片13没有驱动电压，不能工作，驱动芯片13输出高电平，保护下电瞬间的功率电路部分；其中电容C211起到滤波作用，电阻R412起到限流作用。At the moment of power-on, the power supply +5V of the driving circuit is firstly filtered by the inductor 7, and the parameter-adjustable RC delay circuit composed of the capacitor C 1 3, the resistor R 1 4, and the resistor R 2 5 delays the voltage of the positive electrode of the capacitor C 1 3 When it is established, before the capacitor C 1 3 is fully charged, the triode 9 is turned off, so that the MOSFET power tube 10 is also turned off, and the driver chip 13 has no driving voltage and cannot work, so as to ensure that the control circuit powered by +3.3V enters the working state first. After the capacitor C 1 3 is fully charged, the triode 9 is turned on, so that a voltage drop occurs at both ends of the resistor R 3 6, causing the MOSFET power tube 10 to turn on, and the driving chip 13 has a driving voltage and can work normally, and the control signal is driven and amplified; At the instant of power on, when the control circuit power supply +3.3V is powered off before the drive circuit power supply +5V, since the regulator tube 8 is +3.3V, when the capacitor C 1 3 is discharged, the triode 9 is turned off, and the MOSFET power tube 10 is also turned off. The driver chip 13 has no driving voltage and cannot work. The driver chip 13 outputs a high level to protect the power circuit part at the moment of power-off; wherein the capacitor C 2 11 acts as a filter, and the resistor R 4 12 acts as a current limiter.

Claims (6)

1. a power supply timing management circuit, it is characterised in that: this circuit includes diode D1(1), two Pole pipe D2(2), electric capacity C1(3), resistance R1(4), resistance R2(5), resistance R3(6), steady Pressure pipe (8), audion (9), MOSFET power tube (10), resistance R4And driving chip (12) (13)；Described diode D1(1) with diode D2(2) series aiding connection, the circuit two ends that series connection is formed It is connected to+3.3V power supply and electric capacity C respectively1, and diode D (3)1(1) negative pole is with+3.3V power supply even Connect, diode D2(2) positive pole and electric capacity C1(3) one end connects, electric capacity C1(3) the other end Ground connection；Diode D2(2) positive pole and resistance R1And resistance R (4)2(5) resistance formed after parallel connection One end connect, resistance R1And resistance R (4)2(5) after parallel connection formed resistance the other end respectively with electricity Resistance R3(6) one end and the source electrode of MOSFET power tube (10) connect, resistance R3(6) another End is connected with the colelctor electrode of audion (9)；The negative pole of stabilivolt (8) and diode D2(2) positive pole is even Connecing, the positive pole of stabilivolt (8) is connected with the base stage of audion (9)；The colelctor electrode of audion (9) with The grid of MOSFET power tube (10) connects, the grounded emitter of audion (9)；MOSFET power The drain electrode of pipe (10) and resistance R4(12) one end connects, resistance R4(12) the other end and driving core The OUT terminal mouth of sheet (13) connects；The COM port of driving chip (13) connects+5V power supply, drives The GND port ground connection of dynamic chip (13).
Power supply timing the most according to claim 1 management circuit, it is characterised in that: described driving chip (13) it is connected between GND port and COM port and has electric capacity C2(11).
Power supply timing the most according to claim 1 management circuit, it is characterised in that: described MOSFET The source electrode of power tube (10) is connected with one end of inductance (7), and the other end of inductance (7) connects+5V Power supply.
Power supply timing the most according to claim 1 management circuit, it is characterised in that: described driving chip (13) model is ULN2003.
Power supply timing the most according to claim 1 management circuit, it is characterised in that: described audion (9) Model be 3DG103.
Power supply timing the most according to claim 1 management circuit, it is characterised in that: described MOSFET The model of power tube (10) is IRF7424.
CN201210231007.5A 2012-07-04 2012-07-04 A power supply sequence management circuit Active CN103532533B (en)

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CN109728802A (en) * 2018-12-18 2019-05-07 电子科技大学 A dual power supply circuit with timing applied to millimeter wave chips
CN110504869A (en) * 2019-09-10 2019-11-26 陕西航空电气有限责任公司 A kind of aviation high-voltage brushless DC motor controller electrifying control circuit and control method
CN112039334B (en) * 2020-07-28 2021-12-21 北京精密机电控制设备研究所 Controller of direct-drive electro-hydraulic servo valve for multi-parameter requirements
CN114400881B (en) * 2021-11-29 2024-09-27 固赢科技(深圳)有限公司 Drive IC power supply time sequence control circuit and film coating power supply

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