CN210640681U - Control device of electronic fuse - Google Patents
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- CN210640681U CN210640681U CN201921295034.2U CN201921295034U CN210640681U CN 210640681 U CN210640681 U CN 210640681U CN 201921295034 U CN201921295034 U CN 201921295034U CN 210640681 U CN210640681 U CN 210640681U
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Abstract
The utility model provides a control device of an electronic fuse.A separation unit in the device is used for separating signals between a first power domain and a second power domain; and the signal is decoded and decoded; the signals are external signals and internal signals; the external signal is connected with the isolation unit and used for controlling the state of the access unit or displaying the internal state of the fuse. The utility model has the advantages that: the control working state of the fuse has various forms, and multifunctional state display and control are realized. The state of the fuse is accurately monitored, and the stability is strong; the control reliability is high under different environments, and the misoperation of the fuse in work is effectively avoided. The electronic fuse is in a conducting state when not powered.
Description
Technical Field
The utility model relates to an electronic circuit field, concretely relates to controlling means of electronic fuse
Background
Fuses are electrical devices used in electrical systems to protect against excessive currents. If a load coupled to the power electronics supply draws too much current from the power supply, the fuse disconnects the load from the power electronics supply to prevent damage within the electrical system caused by this too much current. Fuses typically include conductors whose physical dimensions are selected to limit current to a threshold value. In the event that the current exceeds this threshold, the conductor melts to prevent excessive current from damaging the electrical system.
The existing fuse utilizes a heating fusing principle, a fuse link part is the core of the fuse, the fuse link plays a role in cutting off current when fused, the fuse processing technology requirement of the fuse is high, the response speed of the existing fuse is low, and the fusing current is difficult to control to an accurate value. The existing fuse can be scrapped after being melted and cannot be used for the second time.
Fuses are gradually replaced by circuit breakers. A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by an overcurrent or an overload or a short circuit. In many applications, circuit breakers may be implemented using electronic switches (e.g., MOS transistors, IGBTs, etc.) to disconnect the protected circuit from the power supply in the event of an overcurrent. Such an electronic circuit breaker may also be referred to as an electronic fuse (e-fuse, smart fuse, electronic fuse, etc.).
However, the existing electronic fuse has the following defects:
the control and working state of the fuse are single, and multifunctional state display and control cannot be realized.
Under different environments, false operation of fuse operation is easy to occur due to poor stability of control signals.
The electronic fuse is in a normally-off state and can normally work only after the power supply (power-on) of the power supply is controlled;
the monitoring of the state of the fuse is simple and inaccurate, resulting in insufficient protection.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems: the utility model provides a can control in a flexible way and can conveniently learn the fuse control method and device of internal state.
In a first aspect of the present invention, there is provided a control device for an electronic fuse, comprising:
the power supply device comprises a first power domain, a second power domain, a first connecting end VIN, a second connecting end VOUT, an isolation unit, a control and protection unit, a passage unit and a current detection unit;
the first power domain refers to a working power domain of a transmission and isolation unit of an external signal; the second power domain is a working power domain of the isolation unit and the control and protection unit;
the isolation unit is used for isolating signals between the first power domain and the second power domain; and the signal is decoded and decoded; the signals are external signals and internal signals;
the first connection end VIN, the passage unit, the second connection end VOUT and the current detection unit are sequentially connected in series; the access unit is in a conducting or disconnecting state and is used for controlling the conducting state from the first connecting end VIN to the second connecting end VOUT;
the current detection unit is used for detecting the current flowing through the passage unit;
the control and protection unit is used for controlling the state of the access unit;
the external signal is connected with the isolation unit and used for controlling the state of the access unit or displaying the internal state of the fuse.
According to a preferred embodiment of the second aspect of the present invention, the external signal is a level signal or a pulse signal.
According to a preferred embodiment of the second aspect of the present invention, the external signal is a control signal, and the control signal is used for controlling the on or off state of the path unit.
According to a preferred embodiment of the second aspect of the present invention, the control signal is a serial control signal; the serial control signal is connected with the isolation unit through a port.
According to a preferred embodiment of the second aspect of the present invention, the control signal is a parallel control signal; the parallel control signals comprise a parallel control-on signal and a parallel control-off signal; the parallel control-on signal and the parallel control-off signal are connected with the isolation unit through two ports (respective ports).
According to a preferred embodiment of the second aspect of the present invention, the control signal comprises a serial control signal and a parallel control signal; the serial control signal is connected with the isolation unit through a port; the parallel control signals comprise a parallel control-on signal and a parallel control-off signal; the parallel control-on signal and the parallel control-off signal are connected with the isolation unit through two ports (respective ports).
According to a preferred embodiment of the second aspect of the present invention, the external signal further comprises a status output signal; the state output signal is a serial state output signal; the status output signal is connected with the isolation unit through a port.
According to a preferred embodiment of the second aspect of the present invention, the external signal further comprises a status output signal; the state output signal is a parallel state output signal; the parallel state output signal comprises a parallel state output-path state signal and a parallel state output-protection state signal; the status output signal is connected to the isolation unit via two ports (respective ports).
According to a preferred embodiment of the second aspect of the present invention, the isolation unit is in the form of transformer isolation or optical coupling isolation.
The utility model has the advantages of it is following:
the control working state of the fuse has various forms, and multifunctional state display and control are realized.
The state of the fuse is accurately monitored, and the stability is strong;
the control reliability is high under different environments, and the misoperation of the fuse in work is effectively avoided.
The electronic fuse is in a conducting state when not powered.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a general block diagram of an electronic fuse according to the present invention.
FIG. 2 illustrates one embodiment of an external signal;
FIG. 3 illustrates a second embodiment of the external signal of the present invention;
fig. 4 shows a third embodiment of an external signal according to the present invention;
FIG. 5 shows a fourth embodiment of the external signal of the present invention;
FIG. 6 shows a fifth embodiment of the external signal of the present invention;
the reference numbers in the figures illustrate:
1-a first power domain, 2-a second power domain, 11-an isolation unit, 12-a control and protection unit, 13-a path unit and 14-a current detection unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The present invention will be described in more detail and fully with reference to the following examples and accompanying drawings.
Introduction of basic knowledge:
"fusing Integral (Melting Integral): the blowing integral of a fuse is the energy required to blow the fuse element of this fuse, also referred to as the blow value I2 t. The structure, material and cross-sectional area of the fuse element determine this value. Each series of fuses uses different materials and component configurations depending on the rated current values, and therefore it is necessary to determine the I2t for each fuse. Normally in a dc circuit, 10 times the rated current is used as the fault current, the fuse is opened in a very short time, and a very accurate I2t "is measured by a high speed oscillograph and an integration procedure.
"I2 t represents the energy generated by the current passing on the conductor. I2t is a joule integral value, which cannot be exceeded if it is a limiting parameter, and slightly exceeds (must be smaller than a limiting value) if it is a rated value; i2t is a heat accumulation value for the frequency converter, if the frequency converter is provided with heat protection, tripping can occur, otherwise, the effect is not good, but the frequency converter is not good if the frequency converter is always in an overheat state. ", a
The utility model discloses electronic fuse has combined the power switch tube of high withstand voltage, low impedance and the function that the electric current was listened to can real-time control electronic fuse's state. Its design operates with minimal heat sinks. The utility model discloses well power switch tube impedance is very little promptly, even the heavy current, it is also very little to generate heat, and the radiator that needs is little.
As shown in fig. 1, the electronic fuse of the present invention includes a first power domain 1, a second power domain 2, a first connection end VIN, a second connection end VOUT, an isolation unit 11, a control and protection unit 12, a path unit 13, and a current detection unit 14.
The power domain here means that all or part of the relevant modules in the fuse operate at a certain supply voltage. It should be noted that the power supply voltage herein includes not only the power supply but also the power ground; the power supply ground is not necessarily 0V voltage; it may also be a positive or negative voltage; but only low with respect to the voltage value of the power supply. For example, in a normal circuit, there are a power supply of an analog circuit and a ground of the analog circuit; a power supply for the digital circuit and a ground for the digital circuit.
In the utility model, the power supply and the power supply ground of the first power domain 1 are respectively a first voltage and a first ground; the power supply and the power ground of the second power domain 2 are respectively a second voltage and a second connection terminal VOUT;
the transmission and isolation unit 11 of the external signal operates in the first power domain 1; the isolation unit 11 and the control and protection unit 12 work in the second power domain 2; the isolation unit 11 is used for isolating signals between the first power domain 1 and the second power domain 2; in fact, the isolation unit 11 is to isolate signals between different power domains, so as to avoid signal transmission errors caused by different operating power supply voltages of signals between different power domains, and even avoid abnormal functions of circuits in different power domains.
The isolation unit 11 performs isolation transmission of signals between different power domains by performing decoding (or modulation and demodulation) processing on the signals of different power domains. And the signals mentioned herein can be divided into external signals and internal signals; namely, the external signal is the signal under the first power domain 1; the internal signal is the signal under the second power domain 2.
The external signal is a signal for controlling the electronic fuse and the outside interactively. The internal signal operates inside the electronic fuse and is a signal operating in the second power domain 2 that is isolated from the external signal by the isolation unit 11.
The first connection terminal VIN, the pass unit 13, the second connection terminal VOUT, and the current detection unit 14 are sequentially connected in series. In different states, the pass unit 13 is in an on or off state. It should be noted that the first connection terminal VIN, the pass unit 13, the second connection terminal VOUT and the current detection unit 14, which are connected in series, are similar to a conventional fuse function.
When the path unit 13 is in a conducting state, a path is formed from the first connection terminal VIN to the second connection terminal VOUT, and the path unit is in a conducting (or called as a path) state;
when the pass unit 13 is in the off state, the first connection terminal VIN forms an open circuit (or referred to as an open circuit) to the second connection terminal VOUT, and is in the off state.
When the pass unit 13 is in the on state, the first connection terminal VIN forms a pass to the second connection terminal VOUT, and the current flows through the pass. The current detection unit 14 is used for detecting the magnitude of the current flowing through the path unit.
Depending on the magnitude of the current flowing through the circuit, the current detection unit 14 will signal the control and protection unit 12, and at the same time, the current detection unit 14 implements the functional curve of I2t, and triggers protection with the curve of I2 t. The further current detecting unit 14 implements the functional curve of I2t by fitting, and may also implement the functional curve of I2t by other means. The protection mode is safer and more accurate than that of the traditional fuse, and different overcurrent multiples and overcurrent time can be set according to different products.
The current detecting unit 14 may be implemented by a resistor, and may also be a current transformer, such as a hall, TMR, fluxgate, rogowski coil, or other current transformer.
When the first power domain 1 and the second power domain 2 are not powered on (i.e., powered), the pass unit 13 is in a conducting state; after the first power domain and the second power domain are powered on, whether the path unit 13 is in the on state or the off state is determined by the control and protection unit.
After the first power domain 1 and the second power domain 12 are normally powered on, if the current flowing through the path unit 13 exceeds a predetermined value, the current detection unit 14 sends a signal to the control and protection unit 12; the state control path unit 13, which controls the external signal combined with the protection unit 12 at the same time, becomes the off state.
On the contrary, if the first power domain 1 and the second power domain 2 are not normally powered on, the control and protection unit 12 does not control in which state the path unit 13 is in even if the current flowing through the path unit 13 exceeds a predetermined value.
When the external signal gives a command to turn off, it becomes an internal signal after being processed by the isolation unit 11. The internal signal controls the access unit 13 to be in a disconnected state through the control and protection unit 12; on the contrary, when the external signal gives a command to turn on, the pass unit 13 is in a turned-on state.
The path unit 13 comprises a driving unit and a power switch tube; the driving unit is used for driving the power switch tube; the on state of the power switch tube determines the on or off state of the pass unit.
The drive unit has 3 ports; the first port 131 is connected with the control and protection unit, the second port 132 is connected with the gate of a power switch tube (here, for convenience of explanation, the power switch tube is shown in the figure), and the third port 133 is connected with the source of the power MOS tube and the current detection unit; the drain 134 of the power MOS transistor is connected to the first connection terminal VIN. It should be noted that the power MOS is only a preferred schematic form of the power switch.
The power switch tube in a particular pass unit may be: junction field effect transistors (Junction FET-JFETs) and metal-oxide semiconductor field effect transistors (MOS-FETs, for short).
Meanwhile, the power switch tube can also be an electric control switch device such as a crystal valve tube, a silicon controlled rectifier, a relay, a contactor and the like. The specific form of the power switch tube is selected according to actual needs.
The junction field effect transistor can also be an N-channel junction field effect transistor and a P-channel junction field effect transistor;
the metal oxide semiconductor field effect transistor can also be an N-channel junction field effect transistor and a P-channel junction field effect transistor; meanwhile, the field effect transistor can also be an enhanced insulated gate field effect transistor and a depletion insulated gate field effect transistor.
The power switch tube can be switched on or off in different states only under corresponding working states.
For example: the main difference between the N-type JFET and the N-type power MOS transistor is that the threshold voltage is different, the threshold voltage of the JFET is a negative value, and the power NMOS transistor is a positive value, so that the JFET is conducted when the grid voltage is in short circuit with the source voltage. Namely the JFET can be conducted by needing 0V voltage; the JFET requires a negative voltage (e.g., -15V) to turn off.
The power NMOS transistor needs a positive voltage, so that the power MOS transistor can be turned off by needing 0V voltage; the power NMOS requires a positive voltage (e.g., 10V) to turn on.
The driving unit mainly achieves the above-mentioned function of turning on or off the power switch tube, and will not be described in detail here.
The following focuses on different embodiments of the external signal:
the external signal may have other implementations, and for convenience of description, in the drawings of the external signal embodiment, only units related to the external signal are illustrated, and other portions not illustrated in the drawings are similar to those in the general block diagram of the electronic fuse of fig. 1.
The utility model discloses one of the embodiments:
as shown in fig. 2, according to one embodiment of the external signal of the present invention, an external signal (here, a control signal, which is schematically a serial control signal) is input to the isolation unit 11, where the serial control signal is used to control the state (on or off) of the pass unit 13.
It should be particularly noted that the serial control signal may be a level signal, for example, when the serial control signal is a first level signal (for example, a high level or a low level), the serial control signal is processed by the isolation unit 11 and then converted into an internal signal; the internal signal makes the access unit 13 in a conducting state through the control and protection unit 12; conversely, when the control signal is a second level signal (opposite to the previous second level signal, for example, low level or high level), the pass unit 13 is in the off state.
It should be noted that in some fields, such as power control, in some industrial fields, even aerospace level applications, the reliability requirement is high, and the insufficient level control signal may not stably control the state of the electronic fuse due to noise, jitter, interference, etc.
The (external) signal here will be set to a pulsed signal. The concrete during operation: when the serial control signal is a first pulse signal (for example, a high-level pulse or a low-level pulse lasting for a certain time, that is, a signal having a certain pulse width). After being processed by an isolation unit 11 units, the signals are converted into internal signals; the internal signal makes the access unit 13 in a conducting state through the control and protection unit 12; on the other hand, when the serial control signal is a second pulse signal (opposite to the previous second level signal, such as a low level pulse or a high level pulse), the pass unit 13 is in the off state.
The second embodiment of the present invention:
as shown in fig. 3, the second embodiment of the external signal of the present invention, here, the external signal (here, the control signal, which is schematically shown as parallel control-on, parallel control-off) is input to the isolation unit 11 for controlling the state (on or off) of the path unit 13.
Unlike the first embodiment in which the serial control signal is input through one signal port like time division multiplexing. Here, the parallel control-on, parallel control-off function is to separately input a signal for controlling the on or off state of the path unit 13. The benefit of the separate control here is a higher reliability of the operation of the electronic fuse.
When the control path unit 13 is in a conducting state, inputting a corresponding signal through the parallel control-on signal port;
when the state of the control path unit 13 is off, a corresponding signal is input through the parallel control-off signal port.
Similar to the signals of the first embodiment, the signals may be level signals or pulse signals; also, the reliability of the pulse signal is higher. It will not be described in detail. It is only emphasized that the parallel control-on, parallel control-off are different simultaneous inputs.
The control and protection unit judges the control signal. If the parallel control-on and the parallel control-off are simultaneously input, the abnormal working state is judged, and a corresponding control signal is not sent to the passage unit 13, namely the state of the passage unit 13 is kept unchanged.
The third embodiment of the present invention:
as shown in fig. 4, the third embodiment of the external signal of the present invention is similar to the combination of the first and second embodiments. The control signal input is a serial control signal, a parallel control-on and a parallel control-off input pulse control signal; this has the advantage that different external signals can be used for different application environments, thereby achieving different reliability requirements under different working conditions of different external environments.
In order to improve the use flexibility and the use intelligence degree of the electronic fuse; it is also possible for the external signal to comprise status display signals for different operating conditions inside the electronic fuse.
The fourth embodiment of the present invention:
as shown in fig. 5, the control signal in the figure can be any one of the first to third embodiments, and the illustration is simplified for convenience of description. The state output in the external signals (the serial control signal and the serial state output signal in the figure) is output by the isolation unit 11. The state output here indicates what state (on or off) the pass unit 13 is in. The state of the access unit is detected by the control and protection unit 12, and the control and protection unit 12 sequentially transmits and outputs the detection result to the external signal, i.e. the state output signal here, through the internal signal and the isolation unit 13.
The different states of the status output signal represent the on or off state of the pass unit, i.e. the on or off state of the electronic fuse.
In order to more clearly understand the different working conditions of the electronic fuse, so as to control it more reliably. The status output signal may be further optimized or improved.
The fifth embodiment of the utility model:
as shown in fig. 6, the control signal in the figure can be any one of the first to third embodiments, and the illustration is simplified for convenience of description.
The parallel state output-path state and the parallel state output-protection state among external signals (serial control signal, parallel state output-path state, parallel state output-protection state in the figure) are output by the isolation unit.
The parallel state output-path state here is similar to the state output signal in the fourth embodiment, and will not be described here. The parallel state output-protection state indicates whether or not the current in the pass unit 13 exceeds a predetermined value.
When the current in the path unit 13 exceeds a predetermined value, the current detection unit 14 will send a status signal to the control and protection unit 12, and the control and protection unit 12 sequentially transmits and outputs an external signal through the internal signal and the isolation unit 11; i.e. the states here output in parallel-the protection state signal.
When the current in the path unit 13 does not exceed a predetermined value, the current detection unit 14 will send another status signal to the control and protection unit 12, and the control and protection unit 12 sequentially transmits and outputs an external signal through the internal signal and the isolation unit 11; i.e. the states here output in parallel-the protection state signal.
Thus, in the fifth embodiment, it can be known that the electronic fuse can display the on or off state of the path unit; and can display whether the current in the electronic fuse exceeds a predetermined value.
In practical applications, these signals indicating different states of the electronic fuse are sent to an external processing module (MCU, controller unit, etc.) for processing and analysis.
To the utility model provides an isolation unit, can be multiple form. It should be noted that, in any form, the isolation unit needs to satisfy the transmission function of the external signal in the embodiments of the present invention in which the external signal is different. The isolation can be in a transformer isolation mode, and can also be in an optical coupling isolation mode.
For the isolation unit, it is practical for the present invention to be from an external signal to an internal signal or from an internal signal to an external signal, and may also include the transmission of multiple signals. That is, according to the different embodiments of the external signal, they can have a plurality of different signal transmission, and can realize one-way transmission (from the external signal to the internal signal or from the internal signal to the external signal) and two-way transmission (from the external signal to the internal signal and from the internal signal to the external signal), but the input and output signals are different and the directions are different.
According to the structural feature of aforementioned fuse, the utility model also provides a control method of electronic fuse: the method specifically comprises the following steps:
step S1: when the electronic fuse is not powered, the electronic fuse is set to be in a pass-through state;
step S2: the electronic fuse supplies power and is in a closed state or an open state according to the condition that whether the external signal and the current exceed the preset value or not.
Step S2 further includes:
step S21: detecting whether the current exceeds a preset value;
if the preset value is exceeded, the electronic fuse is set to be in a disconnected state;
if the preset value is not exceeded, executing the following step S22;
step S22: detecting an external signal; the external signal is a turn-off command, and the electronic fuse is set to be in a disconnection state; otherwise, the external signal is an opening command, and the electronic fuse is set to be in a passage state;
specifically, in step S22, the external signal is a control signal;
there are various embodiments of the external signal in step S22
The utility model discloses one of the method embodiment:
in step S22, only one set of input control signals is:
the group of signals is input through one port; the control signal is now in serial input form.
The second embodiment of the method of the present invention:
in order to enhance the stability of the control signals, the control signals may also be grouped into parallel inputs.
Namely: the turn-off command and the turn-on command are input through respective ports.
The third embodiment of the method of the present invention:
as mentioned earlier, the stability of the control signal is enhanced for greater reliability in certain special applications (aeronautics, astronautics, etc.).
The control signals may also be input in parallel in multiple groups. For example, two sets of control signals are controlled simultaneously.
One group is control signals for serial input;
the other group controls different states (on or off) of the access units in a parallel input mode; its on and off signals are inputted separately.
That is, when the serially input control signal and the parallel control signal are the same command (for example, when the serially input "turn-off command" and the parallelly input "turn-off command" are input, the fuse performs the turn-off operation), the corresponding operation is performed, otherwise, the command is considered as an illegal command.
This is a combination of the two forms described above.
The fourth embodiment of the method of the utility model:
meanwhile, in order to display the state of the fuse more clearly, the external signal in step S22 may further include an internal state output signal; the internal state is mainly indicated by whether the current of the fuse exceeds a preset value.
The status output signal may also be a single serial output.
Parallel output is also possible, in which case the different states (on or off) of the pass unit are output by separate respective signals. The control signal in the aforementioned method may be a level signal or a pulse control signal.
When the level signal is a high level '1' signal or a low level '0' signal;
the pulse control signal is a high-level pulse (upward pulse) or a low-level pulse (downward pulse) that lasts for a certain period of time.
When the control signal is input in series, the turn-off command and the turn-on command of the level signal are in opposite level states. I.e., one state is high level "1" and the other state is low level "0". As long as their level states are opposite, it is not to say that the turn-off command is a fixed high level or low level. However, in the case of the specific signal control, the setting is not changed.
The serial input of the pulse control is similar to a level signal except that the high level or the low level becomes a high level pulse or a low level pulse signal.
The state output signal in the foregoing method may be a level signal or a pulse control signal, similar to the control signal. The detailed state thereof will not be described in detail.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A control device for an electronic fuse, comprising:
the power supply comprises a first power domain, a second power domain, a first connecting end VIN and a second connecting end VOUT;
characterized in that, the control device of the electronic fuse further comprises:
the device comprises an isolation unit, a control and protection unit, a passage unit and a current detection unit;
the isolation unit is used for isolating signals between the first power domain and the second power domain; and the signal is decoded and decoded; the signals are external signals and internal signals;
the first connection end VIN, the passage unit, the second connection end VOUT and the current detection unit are sequentially connected in series; the access unit is in a conducting or disconnecting state and is used for controlling the conducting state from the first connecting end VIN to the second connecting end VOUT;
the current detection unit is used for detecting the current flowing through the passage unit;
the control and protection unit is used for controlling the state of the access unit;
the external signal connection isolation unit is used for controlling the state of the access unit or displaying the internal state of the fuse, and the external signal comprises a control signal.
2. The control device for an electronic fuse according to claim 1, wherein the control signal is a serial control signal; the serial control signal is connected with the isolation unit through a port.
3. The control device for an electronic fuse according to claim 1, wherein the control signals are parallel control signals;
the parallel control signals comprise a parallel control-on signal and a parallel control-off signal;
the parallel control-on signal and the parallel control-off signal are respectively connected with the isolation unit through respective ports.
4. The control device of an electronic fuse according to claim 1, wherein the control signal comprises a serial control signal and a parallel control signal;
the serial control signal is connected with the isolation unit through a port;
the parallel control signals comprise a parallel control-on signal and a parallel control-off signal;
the parallel control-on signal and the parallel control-off signal are connected with the isolation unit through respective ports.
5. The control device for an electronic fuse according to claim 1, wherein the external signal further comprises a status output signal;
the state output signal is a serial state output signal; the status output signal is connected with the isolation unit through a port.
6. The control device for an electronic fuse according to claim 1, wherein the external signal further comprises a status output signal;
the state output signal is a parallel state output signal;
the parallel state output signal comprises a parallel state output-path state signal and a parallel state output-protection state signal;
the status output signals are connected with the isolation unit through respective ports.
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| CN201921295034.2U CN210640681U (en) | 2019-08-09 | 2019-08-09 | Control device of electronic fuse |
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| CN201921295034.2U CN210640681U (en) | 2019-08-09 | 2019-08-09 | Control device of electronic fuse |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336245A (en) * | 2019-08-09 | 2019-10-15 | 无锡启腾电子科技有限公司 | A kind of control method and device of electrical fuse |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336245A (en) * | 2019-08-09 | 2019-10-15 | 无锡启腾电子科技有限公司 | A kind of control method and device of electrical fuse |
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