CN211531002U - Drive control system and converter - Google Patents
Drive control system and converter Download PDFInfo
- Publication number
- CN211531002U CN211531002U CN201922359836.1U CN201922359836U CN211531002U CN 211531002 U CN211531002 U CN 211531002U CN 201922359836 U CN201922359836 U CN 201922359836U CN 211531002 U CN211531002 U CN 211531002U
- Authority
- CN
- China
- Prior art keywords
- voltage
- isolation
- driving
- power supply
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Power Conversion In General (AREA)
Abstract
The embodiment of the utility model discloses drive control system and converter relates to power electronic technology field. The electric isolation between the driving input side and the driving output side can be realized, and the circuit structure is simpler. The power supply circuit is respectively connected with the main control circuit and the drive isolation control circuit, and the main control circuit is connected with the drive isolation control circuit; the driving isolation control circuit is used for amplifying and isolating a switch driving control signal sent by the main control circuit and then outputting the amplified and isolated switch driving control signal, and comprises a driving isolation chip, wherein a first input pin of the driving isolation chip is connected with a pulse width modulation signal input unit circuit; the second input pin of the drive isolation chip is connected with an enable signal input unit circuit; the first output pin at the driving side of the driving isolation chip is connected with a first driving signal output unit circuit. The utility model is suitable for an in distribution equipment and the electric control occasion.
Description
Technical Field
The utility model relates to a power electronic technology field especially relates to a drive control system and converter.
Background
A converter is an electrical device that can change the voltage, frequency, number of phases, and other electrical quantities or characteristics of a power supply system. In a current transformer, there is a need for a drive isolation control circuit or system for driving power switching devices. The reliability of the operation of the drive isolation control circuit or system affects the operating efficiency, stability and safety of the converter.
In order to ensure the reliability of the operation of the drive isolation control circuit or system, it is necessary to isolate the input side of the drive isolation control circuit or system from the drive side (referred to as the output side). At present, a drive isolation control circuit or system mainly realizes the electrical isolation between a drive input side and a drive side through a push-pull circuit, but the drive isolation control method uses more devices, so that the circuit structure is more complex.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a drive control system and a converter, which can realize electrical isolation between a drive input side and an output side, and have a simpler circuit structure.
In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a drive control system, including: the power supply circuit is respectively connected with the main control circuit and the drive isolation control circuit, and the main control circuit is connected with the drive isolation control circuit;
the drive isolation control circuit is used for amplifying and isolating a switch drive control signal sent by the main control circuit and then outputting the amplified and isolated switch drive control signal, and comprises a drive isolation chip, wherein a first input pin of the drive isolation chip is connected with a pulse width modulation signal input unit circuit;
the second input pin of the drive isolation chip is connected with an enable signal input unit circuit;
the power supply pin at the input side of the drive isolation chip is connected with a first power supply unit circuit with a first power supply voltage;
a second power supply unit circuit with a second power supply voltage is connected to the first power supply pin at the driving side of the driving isolation chip;
and a first drive signal output unit circuit is connected to a first output pin at the drive side of the drive isolation chip.
Optionally, a first voltage-stabilizing capacitor is arranged on the pulse width modulation signal input unit circuit, and one end of the first voltage-stabilizing capacitor is grounded;
and a second voltage stabilizing capacitor is arranged on the enabling signal input unit circuit, and one end of the second voltage stabilizing capacitor is grounded.
Optionally, the first power supply unit circuit includes a third voltage-stabilizing capacitor, one end of the third voltage-stabilizing capacitor is connected to the input-side power supply pin, and the other end of the third voltage-stabilizing capacitor is grounded;
the second power supply unit circuit comprises a fourth voltage-stabilizing capacitor, one end of the fourth voltage-stabilizing capacitor is connected with the first power supply pin, and the other end of the fourth voltage-stabilizing capacitor is grounded; the first supply voltage is different from the second supply voltage.
Optionally, the first driving signal output unit circuit includes a first filter capacitor, an input end of the first filter capacitor is connected to the first output pin, an output end of the first filter capacitor is divided into two paths, and one path outputs a high-end driving signal for connecting with the power switch;
and the other branch of the output end of the first filter capacitor is grounded through a first diode, a bypass capacitor and a first resistor connected with the bypass capacitor in parallel, and a low-end driving signal is output.
Optionally, the second power supply unit circuit further includes a first voltage-dividing resistor, a second diode, and a second voltage-dividing resistor, one end of the first voltage-dividing resistor is connected to the power supply, the other end of the first voltage-dividing resistor is connected to the anode of the second diode, the cathode of the second diode is connected to the input end of the second voltage-dividing resistor, and the output end of the second voltage-dividing resistor is connected to the first power supply pin on the output side.
Optionally, the first driving signal output unit circuit further includes a third diode, and the third diode is connected in parallel to two ends of the first filter capacitor in an inverse direction, and is configured to discharge and discharge the first filter capacitor.
Optionally, a dead time setting unit circuit is connected to a third input pin of the driving isolation chip, the dead time setting unit circuit includes a capacitor and a second resistor, one end of the capacitor is connected to the third input pin, and the other end of the capacitor is grounded through the second resistor.
Optionally, a second power supply pin at the driving side of the driving isolation chip is connected to a third power supply unit circuit, the third power supply unit circuit has the same voltage as the second power supply unit circuit, the third power supply unit circuit includes a fifth voltage stabilizing capacitor, one end of the fifth voltage stabilizing capacitor is connected to the second power supply pin, and the other end of the fifth voltage stabilizing capacitor is grounded;
and a second driving signal output unit circuit is connected to a second output pin at the driving side of the driving isolation chip, and the second driving signal output unit circuit is the same as the first driving signal output unit circuit.
Optionally, the power supply circuit comprises: the direct current power supply comprises a direct current input terminal, a non-return diode, an isolation transformer, a first transient diode, a second transient diode, a sixth voltage stabilizing capacitor and a seventh voltage stabilizing capacitor, wherein the output end of the direct current input terminal is connected with the anode of the non-return diode, the cathode of the non-return diode is connected to the input side of the isolation transformer, and the isolation transformer is used for converting input direct current into two paths of isolation voltage;
the first path of isolation voltage output end is connected with a first transient state diode, the first path of isolation voltage output end is also connected with a sixth voltage stabilizing capacitor, and the first path of isolation voltage is filtered by the sixth voltage stabilizing capacitor to remove transient voltage of the output circuit and then is output to the driving side of the driving isolation control circuit;
the second path of isolation voltage output end is connected with a second transient diode, the second path of isolation voltage output end is also connected with a seventh voltage stabilizing capacitor, and the second path of isolation voltage is output to the main control circuit after the transient voltage of the output circuit is filtered by the seventh voltage stabilizing capacitor and the second transient diode.
Optionally, the driver isolation chip is a UCC20520 driver isolation chip.
In a second aspect, an embodiment of the present invention provides a converter, including any one of the first aspect, the drive control system and the power switch, the output end of the drive isolation control circuit of the drive control system and the power switch are connected.
Optionally, the power switch is a metal-oxide semiconductor field effect transistor.
The embodiment of the utility model provides a drive control system and converter, including drive isolation control circuit, because drive isolation control circuit adopts the drive to keep apart the chip, can keep apart drive isolation control circuit input side and drive side (output side) electrical isolation. In addition, the drive isolation control circuit based on the drive isolation chip can realize the drive control of the power switch through the pins of the drive isolation control circuit by simply connecting peripheral circuits such as input and output, and the circuit structure is simpler.
Further, the circuit structure of the driving control system provided by the embodiment is simpler, possible fault points are fewer, and the working reliability of the driving control system is improved to a certain extent.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic block diagram of a circuit structure of a driving control system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a driving isolation control circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a power supply circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an integrated circuit of a main control circuit according to an embodiment of the present invention;
fig. 5 is a schematic block diagram of a circuit structure of a converter according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be apparent that numerous technical details are set forth in the following detailed description to provide a more thorough description of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without some of these details. In addition, some methods, means, components and applications thereof known to those skilled in the art are not described in detail in order to highlight the gist of the technical idea of the present invention, but the implementation of the present invention is not affected. The embodiments described herein are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In order to help the public to understand the utility model, the relevant prior art schemes are objectively and briefly introduced as follows:
at present, a drive control system mainly realizes the electrical isolation of drive input and output sides through a push-pull circuit. When designing each circuit composition of the drive control system, the circuit driving capability needs to be determined, the parasitic parameters in the drive loop are considered, the drive current is obtained through calculation, and meanwhile, the power loss, the temperature tolerance condition and the like of the device need to be considered, and finally the drive isolation control circuit of the drive control system is obtained. The drive isolation control circuit based on the push-pull circuit is complex in design process, more electronic devices are used for realizing drive isolation control, corresponding circuit topology is also complex, possible fault points are more, and accordingly the working reliability of a drive control system is reduced.
Example one
In order to solve the above-mentioned problem that exists among the current drive control scheme, it is shown with reference to fig. 1 to 4 to refer to, the embodiment of the utility model provides a drive control system is applicable to distribution equipment and electric control occasion, including supply circuit, master control circuit and drive isolation control circuit, supply circuit respectively with master control circuit and drive isolation control circuit connect for master control circuit and drive isolation control circuit power supply, master control circuit with drive isolation control circuit connects, drive isolation control circuit is used for the switch drive control signal that sends master control circuit to enlarge the back output of keeping apart.
When the drive control system is used in a converter, in the operation process of the converter, the power supply circuit supplies power to the main control circuit and the drive isolation control circuit, the main control circuit is used for sending a drive control signal to the drive isolation control circuit according to the current working state of the converter, such as an inversion state, a rectification state and the like, and the drive isolation control circuit receives the drive control signal, amplifies and isolates the drive control signal and outputs the amplified drive control signal to the power switch so as to drive the power switch to be switched on.
Referring to fig. 2, the driving isolation control circuit includes a driving isolation chip U3 for amplifying and isolating the switch driving control signal; a pulse width modulation signal input unit circuit is connected to a first input pin PWM of the drive isolation chip U3; in the figure, PWMA is a drive control signal.
An enable signal input unit circuit is connected to the second input pin DIS of the driver isolation chip U3, and EN in the figure represents an enable signal.
The input side power supply pin 3 of the drive isolation chip U3 is connected with a first power supply unit circuit with a first power supply voltage; a second power supply unit circuit with a second power supply voltage is connected to a first power supply pin 15 on the driving side (output side) of the driving isolation chip; the first output pin 15 at the driving side of the driving isolation chip is connected with a first driving signal output unit circuit, and is used for outputting the amplified and isolated switch driving control signal to the power switch.
The embodiment of the utility model provides a drive control system, drive isolation control circuit wherein adopts the drive to keep apart the chip, realizes drive control signal's enlargies the isolation, realizes the electrical isolation of input side and output side promptly. The drive isolation control circuit based on the drive isolation chip can realize the drive control of the power switch through the pins of the drive isolation control circuit by simply connecting peripheral circuits such as input, output and the like, and the circuit structure is simpler. Possible failure points are further reduced, so that the operational reliability of the drive control system can be improved to a certain extent.
With continued reference to fig. 2, in some embodiments of the present invention, a first voltage stabilizing capacitor C9 is disposed on the pwm signal input unit circuit, and one end of the first voltage stabilizing capacitor C9 is grounded to DGND;
a second voltage-stabilizing capacitor C10 is arranged on the enable signal EN input unit circuit, and one end of the second voltage-stabilizing capacitor C10 is grounded DGND;
in this embodiment, the switch driving control signal PWMA outputted by the main control circuit is regulated by the first voltage regulating capacitor C9 to ensure that the stable switch driving control signal is outputted to the driving isolation chip U3. The enable signal EN is a switching value trigger signal, which is a switch for ensuring the normal operation of the pwm signal input unit circuit, and the second voltage stabilizing capacitor C10 stabilizes the voltage of the enable signal.
With continued reference to fig. 2, the first power supply unit circuit includes a third voltage stabilizing capacitor C11 for stabilizing the input side power supply voltage; one end of the third voltage-stabilizing capacitor C11 is connected to the input-side power supply pin 3, and the other end of the third voltage-stabilizing capacitor is grounded to GND.
The second power supply unit circuit comprises a fourth voltage-stabilizing capacitor C15, one end of the fourth voltage-stabilizing capacitor C15 is connected to the first power supply pin 16, and the other end is grounded, specifically to the access pin 14, wherein VSSA represents a low potential, which is equivalent to GND; the first supply voltage is different from the second supply voltage. Specifically, the first power supply voltage is +3.3V, and the second power supply voltage is + 18V.
In other embodiments, the first driving signal output unit circuit includes a first filter capacitor C14, an input terminal of the first filter capacitor C14 is connected to the first output pin 15, and an output terminal of the first filter capacitor C14 is divided into two paths, one path outputting the high-side driving signal GHA for connection with the power switch.
The other branch of the output end of the first filter capacitor C14 passes through a first diode D6, a bypass capacitor C18 and a first resistor R12 connected with the bypass capacitor C18 in parallel, and then is grounded to output a low-end driving signal SHA; the bypass capacitor is used for filtering out high-frequency components in the output signal.
Specifically, the second power supply unit circuit further includes a first voltage-dividing resistor R10, a second diode D5, and a second voltage-dividing resistor R9, wherein one end of the first voltage-dividing resistor R10 is connected to the +18V power supply, the other end of the first voltage-dividing resistor R10 is connected to the anode of the second diode D5, the cathode of the second diode D5 is connected to the input end of the second voltage-dividing resistor R9, and the output end of the second voltage-dividing resistor R9 is connected to the output-side first power supply pin 16.
In some embodiments, the first driving signal output unit circuit further includes a third diode D3, the third diode D3 is connected in inverse parallel across the first filter capacitor C14 for discharging and discharging the first filter capacitor.
With reference to fig. 2, a dead time setting unit circuit is connected to the third input pin of the driving isolation chip for setting a dead time of the driving isolation control, the dead time setting unit circuit includes a capacitor C12 and a second resistor R8, one end of the capacitor C12 is connected to the third input pin 6, and the other end is connected to GND through the second resistor R8; the capacitor C12 and the second resistor R8 determine the dead time of the drive isolation control, and the dead time of the drive isolation control can be changed by changing the magnitude of the capacitor or the second resistor.
In this embodiment, different dead time and driving current can be set according to different types of power switches, for example, MOSFETs (metal-oxide semiconductor field effect transistors), so as to adapt to converters with different power levels.
With reference to fig. 2, the second power supply pin 11 on the driving side of the driving isolation chip is connected to a third power supply unit circuit, the voltage of the third power supply unit circuit is the same as that of the second power supply unit circuit, and both the third power supply unit circuit and the second power supply unit circuit are +18V, the third power supply unit circuit includes a fifth voltage stabilizing capacitor C16, one end of the fifth voltage stabilizing capacitor C16 is connected to the second power supply pin 11, and the other end is grounded, that is, the pin 9.
A second output pin 10 at the driving side of the driving isolation chip is connected with a second driving signal output unit circuit, a second driving signal is divided into two paths through a capacitor C13, and one path of the second driving signal is output as a driving signal SLA; the other path outputs a driving signal GLA after passing through a current-limiting diode D4, a resistor R11 and a resistor C17; the second driving signal output unit circuit is the same as the first driving signal output unit circuit, and may be referred to each other specifically, and thus is not described again.
Specifically, the drive isolation chip is a UCC20520 drive isolation chip. The drive isolation chip of UCC20520 achieves the advantages of a drive isolation control circuit: 1. the circuit is simple, and has single input and double-channel output; 2. the driving capability is strong, and the switching time delay is low; 3. the common-mode transient immunity is strong, and the surge immunity is strong; 4. programmable setting of dead time; 5. the input and output sides are isolated. By adopting the drive isolation chip with the type, fewer peripheral resistance-capacitance components can be connected to pins of the drive isolation chip, so that the input side and the output side can be electrically isolated, and the circuit topology is simpler.
Referring to fig. 3, the power supply circuit includes: the direct current power supply comprises a direct current input terminal DC, a non-return diode D1, an isolation transformer U1, a first transient diode TVS1, a second transient diode TVS2, a sixth voltage stabilizing capacitor C1 and a seventh voltage stabilizing capacitor C2, wherein the DC output end of the direct current input terminal DC is connected with the anode of the non-return diode D1, the cathode of the non-return diode D1 is connected with the input side of the isolation transformer U1, and the isolation transformer U1 is used for converting the input direct current into two paths of isolation voltage;
the first path of isolation voltage output end is connected with a first transient diode TVS1, the first path of isolation voltage output end is also connected with a sixth voltage-stabilizing capacitor C1, and the first path of isolation voltage is subjected to voltage stabilization by the sixth voltage-stabilizing capacitor C1 and the transient voltage of the output circuit is filtered by a first transient diode TVS1 and then is output to the driving side of the driving isolation control circuit;
the second isolation voltage output end is connected with a second transient diode TVS2, the second isolation voltage output end is also connected with a seventh voltage stabilizing capacitor C2, the second isolation voltage is stabilized by the seventh voltage stabilizing capacitor C2, and transient voltage of the output circuit is filtered by the second transient diode TVS2 and then is output to the main control circuit, so that the main control circuit is protected from starting.
The main control circuit comprises a Digital Signal Controller (DSC) and peripheral devices, and a piccolo series DSC of Ti can be used as a signal generation chip of the main control circuit. Referring to fig. 4, wherein R1, R2, R3, R4, R5, R6 and R7 are resistors, C3, C4, C5, C6, C7 and C8 are capacitors, U2 is DSC, and X1 is a crystal oscillator. C4, C5, R5 and X1 form a DSC crystal oscillator circuit, C3, C6, C7, C8, R4 and R6 form a base circuit of the DSC, and R7 is 0V reference resistance of the A/D module. And R1, R2 and R3 are pull-down resistors, when the system works, the DSC regulates a loop through an internal EPWM module of the DSC after the DSC carries out analog-to-digital conversion on the current voltage and current in real time through the internal A/D module, and outputs signals to the drive isolation control circuit.
It can be understood that the main control circuit is mainly used for sending the switch driving control signal to the driving isolation control circuit according to the working state of the current converter, and according to the above description of the composition and action of the main control circuit, in combination with the integrated circuit schematic diagram of the main control circuit in fig. 4, a person skilled in the art can clearly understand and implement the scheme of the main control circuit, and details are not repeated.
In addition, it can be understood that, based on the inventive concept of the present invention, specific parameters of each electronic device related to can be selected by a person skilled in the art according to specific situations, and for the prior art, in order to highlight the improvement point of the present invention, the detailed description is omitted here.
Example two
Referring to fig. 5, another embodiment of the present invention provides a converter, including the driving control system according to any one of the embodiments, and a power switch, wherein an output end of the driving isolation control circuit of the driving control system is connected to the power switch.
The power switch is usually a metal-oxide semiconductor Field Effect Transistor (MOS-FET).
The converter provided by this embodiment includes the drive control system according to any one of the embodiments, and the drive isolation control circuit therein can achieve electrical isolation between the input side and the output side, and the circuit structure for achieving drive isolation control is relatively simple. When the converter is applied to the converter, the whole circuit structure of the converter can be simplified, and possible fault points of the converter are reduced due to the simplification of the circuit structure, so that the operation efficiency, the stability and the safety of the converter can be improved to a certain extent.
It should be noted that the terms "upper", "lower", and the like, herein indicate orientations and positional relationships, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. Relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. As will be appreciated by one of ordinary skill in the art, the situation may be specified.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A drive control system, comprising: the power supply circuit is respectively connected with the main control circuit and the drive isolation control circuit, and the main control circuit is connected with the drive isolation control circuit;
the drive isolation control circuit is used for amplifying and isolating a switch drive control signal sent by the main control circuit and then outputting the amplified and isolated switch drive control signal, and comprises a drive isolation chip, wherein a first input pin of the drive isolation chip is connected with a pulse width modulation signal input unit circuit;
the second input pin of the drive isolation chip is connected with an enable signal input unit circuit;
the power supply pin at the input side of the drive isolation chip is connected with a first power supply unit circuit with a first power supply voltage;
a second power supply unit circuit with a second power supply voltage is connected to the first power supply pin at the driving side of the driving isolation chip;
and a first drive signal output unit circuit is connected to a first output pin at the drive side of the drive isolation chip.
2. The drive control system according to claim 1, wherein a first voltage stabilization capacitor is provided on the pwm signal input unit circuit, and one end of the first voltage stabilization capacitor is grounded;
and a second voltage stabilizing capacitor is arranged on the enabling signal input unit circuit, and one end of the second voltage stabilizing capacitor is grounded.
3. The drive control system according to claim 1, wherein the first power supply unit circuit includes a third voltage-stabilizing capacitor, one end of the third voltage-stabilizing capacitor is connected to the input-side power supply pin, and the other end of the third voltage-stabilizing capacitor is grounded;
the second power supply unit circuit comprises a fourth voltage-stabilizing capacitor, one end of the fourth voltage-stabilizing capacitor is connected with the first power supply pin, and the other end of the fourth voltage-stabilizing capacitor is grounded; the first supply voltage is different from the second supply voltage.
4. The driving control system according to claim 1, wherein the first driving signal output unit circuit comprises a first filter capacitor, an input end of the first filter capacitor is connected to the first output pin, an output end of the first filter capacitor is divided into two paths, and one path outputs a high-end driving signal for connecting with the power switch;
and the other branch of the output end of the first filter capacitor is grounded through a first diode, a bypass capacitor and a first resistor connected with the bypass capacitor in parallel, and a low-end driving signal is output.
5. The drive control system according to any one of claims 1 to 4, wherein the second power supply unit circuit further includes a first voltage dividing resistor, a second diode, and a second voltage dividing resistor, one end of the first voltage dividing resistor is connected to the power supply, the other end of the first voltage dividing resistor is connected to the anode of the second diode, the cathode of the second diode is connected to the input end of the second voltage dividing resistor, and the output end of the second voltage dividing resistor is connected to the first power supply pin on the output side.
6. The driving control system as claimed in claim 1, wherein the first driving signal output unit circuit further comprises a third diode connected in inverse parallel to two ends of the first filter capacitor for discharging and discharging the first filter capacitor.
7. The driving control system according to claim 1, wherein a dead time setting unit circuit is connected to the third input pin of the driving isolation chip, and the dead time setting unit circuit includes a capacitor and a second resistor, one end of the capacitor is connected to the third input pin, and the other end of the capacitor is grounded through the second resistor.
8. The driving control system according to any one of claims 1 to 4, wherein the second power supply pin on the driving side of the driving isolation chip is connected to a third power supply unit circuit, the third power supply unit circuit has the same voltage as the second power supply unit circuit, the third power supply unit circuit comprises a fifth voltage stabilizing capacitor, one end of the fifth voltage stabilizing capacitor is connected to the second power supply pin, and the other end of the fifth voltage stabilizing capacitor is grounded;
and a second driving signal output unit circuit is connected to a second output pin at the driving side of the driving isolation chip, and the second driving signal output unit circuit is the same as the first driving signal output unit circuit.
9. The drive control system according to any one of claims 1 to 4, characterized in that the power supply circuit includes: the direct current power supply comprises a direct current input terminal, a non-return diode, an isolation transformer, a first transient diode, a second transient diode, a sixth voltage stabilizing capacitor and a seventh voltage stabilizing capacitor, wherein the output end of the direct current input terminal is connected with the anode of the non-return diode, the cathode of the non-return diode is connected to the input side of the isolation transformer, and the isolation transformer is used for converting input direct current into two paths of isolation voltage;
the first path of isolation voltage output end is connected with a first transient state diode, the first path of isolation voltage output end is also connected with a sixth voltage stabilizing capacitor, and the first path of isolation voltage is filtered by the sixth voltage stabilizing capacitor to remove transient voltage of the output circuit and then is output to the driving side of the driving isolation control circuit;
the second path of isolation voltage output end is connected with a second transient diode, the second path of isolation voltage output end is also connected with a seventh voltage stabilizing capacitor, and the second path of isolation voltage is output to the main control circuit after the transient voltage of the output circuit is filtered by the seventh voltage stabilizing capacitor and the second transient diode.
10. The drive control system of any of claims 1 to 4, wherein the drive isolation chip is a UCC20520 drive isolation chip.
11. A converter comprising a drive control system according to any one of claims 1 to 10 and a power switch, wherein an output of a drive isolation control circuit of the drive control system is connected to the power switch.
12. The converter according to claim 11, wherein the power switch is a metal-oxide semiconductor field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359836.1U CN211531002U (en) | 2019-12-24 | 2019-12-24 | Drive control system and converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359836.1U CN211531002U (en) | 2019-12-24 | 2019-12-24 | Drive control system and converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211531002U true CN211531002U (en) | 2020-09-18 |
Family
ID=72466681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922359836.1U Active CN211531002U (en) | 2019-12-24 | 2019-12-24 | Drive control system and converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211531002U (en) |
-
2019
- 2019-12-24 CN CN201922359836.1U patent/CN211531002U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210249951A1 (en) | Power supply device and control method for power supply device | |
| CN102460932B (en) | Power conversion apparatus | |
| JP5060147B2 (en) | DC-DC converter | |
| CN101326718B (en) | High voltage power switches using low voltage transistors | |
| WO2015174024A1 (en) | Power conversion device and power conditioner using same | |
| EP2858195B1 (en) | Converter circuit | |
| CN105406712A (en) | Bidirectional Current-sense Circuit | |
| WO2015174016A1 (en) | Power conversion device and power conditioner using same | |
| WO2011114828A1 (en) | Driver circuit for power supply, integrated driver circuit for power supply, and power supply | |
| CN107196546B (en) | Active discharge system of motor controller | |
| US10020731B2 (en) | Power switch circuit | |
| CN110401335B (en) | Drive circuit, power module, and power conversion system | |
| CN107222113A (en) | A kind of wide pressure or voltage-stabilized power supply circuit with self feed back self-protection function | |
| US20200119658A1 (en) | Bridge circuit for inverter or rectifier | |
| CN101267155A (en) | System and method for providing power system with stable control | |
| CN103190067B (en) | Drive circuit and inverter circuit | |
| US6700806B2 (en) | Unidirectional three phase pulse controlled rectifier system with failed phase voltage operation | |
| CN211531002U (en) | Drive control system and converter | |
| JP2010193596A (en) | Switching circuit and power conversion circuit | |
| US11606021B2 (en) | Power converter apparatus provided with low-pass filter circuit for reducing switching frequency components | |
| WO2007046471A1 (en) | Rush current reducing circuit and electric device | |
| CN115021591A (en) | LCC topological circuit for converting three phases into DC-DC | |
| EP4118745A1 (en) | Apparatuses and methods involving amplification circuit with push-pull wave-shaping operation | |
| Padilha et al. | Low-cost gate drive circuit for three-level neutral-point-clamped voltage-source inverter | |
| JP5278229B2 (en) | Protection device and protection method for semiconductor integrated circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |