CN210183223U - Energy recovery circuit, energy recovery module, energy recovery system, switching power supply and intelligent control switching power supply - Google Patents
Energy recovery circuit, energy recovery module, energy recovery system, switching power supply and intelligent control switching power supply Download PDFInfo
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Abstract
The utility model relates to an integrated circuit technical field relates to energy recuperation circuit, energy recuperation module, energy recovery system, switching power supply and intelligent control switching power supply. The energy recovery circuit is provided with an inductive energy storage unit and comprises: the power supply comprises a first switching tube, a second switching tube, a switching circuit, a drive control circuit, a first capacitor and a power supply conversion circuit; the charging of the energy recovery circuit to the inductance energy storage unit comprises two parts, the first part is that charging current flows to the ground through a first switch tube and a second switch tube, the second part is that the charging current flows to the ground through the first switch tube, a switching circuit and a first capacitor, the energy recovery of the charging current of the inductance energy storage unit is realized through the energy storage of the first capacitor, the charging current of the inductance energy storage unit is recycled to supply power to a system, the cost can be saved, and the system efficiency is improved.
Description
Technical Field
The utility model relates to an integrated circuit technical field, in particular to energy recuperation circuit, energy recuperation module, energy recovery system, switching power supply and intelligent control switching power supply.
Background
The switching power supply converts an input signal into an output signal through the on and off of the switching tube. Generally, a switching power supply uses a control chip to control the on and off of a switching tube, and the control chip needs a dc voltage for power supply.
Fig. 1 shows a conventional switching power supply circuit, in which an input voltage source (generally including a rectifier, a filter circuit, etc.) outputs an uncontrolled dc bus voltage Vbus, when a switching tube MP is turned on, a charging current of the inductor LP by the Vbus voltage flows through LP and the switching tube MP to GND, and when M1 is turned off, energy on the inductor LP is freewheeling via a diode D and is transferred to a load, so as to provide a required voltage or current to the load.
In the above conventional switching power supply circuit, the charging current of the inductor directly flows to the GND without being utilized, which causes energy waste and efficiency reduction.
SUMMERY OF THE UTILITY MODEL
The utility model provides an energy recuperation circuit, energy recuperation module, energy recovery system, switching power supply and intelligent control switching power supply carry out energy recuperation through the charging current to inductance energy storage unit, give the system power supply, can effectively utilize the resource, practice thrift the cost, promote switching power supply's system conversion efficiency.
According to the utility model discloses an energy recuperation circuit of embodiment has an inductance energy storage unit, include: the first switch tube is provided with a first end, a second end and a control end, wherein the first end is electrically coupled to the first end of the inductive energy storage unit; a second switch tube having a first end, a second end and a control end, wherein the first end is electrically coupled to the second end of the first switch tube, and the second end is electrically coupled to ground; the switching circuit is provided with a first end, a second end and a control end, wherein the first end is electrically coupled to the second end of the first switching tube and the first end of the second switching tube; the driving control circuit is electrically coupled to the first switch tube, the second switch tube and the control end of the switching circuit and controls the on and off of the first switch tube, the second switch tube and the switching circuit; a first capacitor having a first end electrically coupled to the second end of the switching circuit and a second end electrically coupled to ground; the power supply conversion circuit is electrically coupled to the drive control circuit and provides a power supply voltage for the drive control circuit; the energy recovery circuit charges the inductance energy storage unit and comprises two parts, the first part is that charging current flows to the ground through a first switching tube and a second switching tube, the second part is that the charging current flows to the ground through the first switching tube, a switching circuit and a first capacitor, and energy recovery of the charging current of the inductance energy storage unit is achieved through energy storage of the first capacitor.
According to the utility model discloses an energy recuperation circuit of embodiment, the inside high-pressure side and the outside high pressure feed end electric coupling of isolating the unit through a high pressure of power conversion circuit, the low-pressure side and a voltage regulator electric coupling of high pressure isolating the unit, the voltage of voltage regulator output exports drive control circuit's supply voltage as power conversion circuit, and the level of the voltage of this voltage is higher than the level of the voltage on the first condenser.
According to the utility model discloses an energy recuperation circuit of embodiment, voltage regulator is a linear voltage regulator, including the adjusting pipe, error amplifier and feedback circuit. According to the utility model discloses an energy recuperation circuit of embodiment, power conversion circuit is inside to include a boost circuit, and the voltage on the first condenser does boost circuit's input voltage, boost circuit's output voltage exports drive control circuit's supply voltage as power conversion circuit, and boost circuit output voltage's level is higher than its input voltage's level.
According to the utility model discloses an energy recuperation circuit of embodiment, the switching circuit is a switch, and its first end electricity is coupled to the second end of first switch tube and the first end of second switch tube, and second end electricity is coupled to the first end of first condenser, and the control end is electrically coupled to drive control circuit.
According to an embodiment of the present invention, the switching circuit is a diode, the anode of the first terminal is electrically coupled to the second terminal of the first switch tube and the first terminal of the second switch tube, and the cathode of the second terminal is electrically coupled to the first terminal of the first capacitor.
According to an embodiment of the present invention, the driving circuit has a first input terminal, a second input terminal, a third input terminal, a first output terminal, a second output terminal, and a third output terminal, wherein the first input terminal is electrically coupled to the output terminal of the power conversion circuit, the second input terminal is electrically coupled to the first terminal of the first capacitor, the third input terminal is electrically coupled to a voltage pulse control signal, and the generated first output terminal signal, second output terminal signal and third output terminal signal respectively control the on/off of the first switch tube, the second switch tube and the switching circuit, wherein the high level of the voltage pulses of the signal at the first output terminal is higher than the level of the voltage on the first capacitor, or at least a part of the time, the high level is higher than the level of the voltage on the first capacitor, and the high level of the voltage pulse of the signal at the third output end is higher than the level of the voltage on the first capacitor.
According to the utility model discloses an energy recuperation circuit of embodiment, drive circuit has first input, the second input, the third input, first output and second output, wherein first input electricity is coupled to power conversion circuit's output, the second input electricity is coupled to the first end of first condenser, a voltage pulse control signal is had to the third input electricity, the first output signal and the second output signal of production, control switching on and shutting off of first switch tube and second switch tube respectively, wherein the voltage pulse high level of first output signal is higher than the level of voltage on the first condenser, or the high level that has at least a part of time is higher than the level of voltage on the first condenser.
According to the utility model discloses an energy is withdrawed module of embodiment, including energy recuperation circuit.
An energy recovery system according to an embodiment of the present invention includes the energy recovery module; the power supply further comprises an auxiliary power supply module, and the auxiliary power supply module converts the energy recovered from the first capacitor to output an auxiliary power supply voltage.
According to the utility model discloses a switching power supply of embodiment, including input circuit, output circuit and load, still including energy recuperation module.
According to the utility model discloses an intelligent control switching power supply of embodiment, including input circuit, output circuit and load, the energy recovery system; the intelligent control module is electrically coupled with the energy recovery system, receives the voltage of the auxiliary power supply for power supply, outputs an intelligent control signal to control the energy recovery system in a feedback mode, and achieves intelligent control of the switching power supply.
According to the utility model relates to an intelligent control module can be bluetooth module, WIFI module, wireless control module such as radar module or infrared module.
The charging current of the inductance energy storage unit is recycled to supply power to the system, so that the cost can be saved, and the system efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a conventional switching power supply circuit;
fig. 2 is a schematic diagram of an energy recovery circuit according to an embodiment of the present invention;
fig. 3A is a schematic diagram of a power conversion circuit according to an embodiment of the present invention;
fig. 3B is a schematic diagram of a power conversion circuit according to another embodiment of the present invention;
fig. 3C is a schematic diagram of a power conversion circuit according to another embodiment of the present invention;
fig. 3D is a schematic diagram of a switching circuit according to an embodiment of the present invention;
fig. 3E is a schematic diagram of a switching circuit according to another embodiment of the present invention;
fig. 4A is a schematic diagram of a waveform according to an embodiment of the present invention;
FIG. 4B is a schematic diagram of a waveform according to another embodiment of the present invention;
fig. 4C is a schematic waveform diagram of another embodiment of the present invention;
fig. 4D is a schematic waveform diagram of another embodiment of the present invention;
FIG. 4E is a schematic waveform diagram of another embodiment of the present invention;
fig. 5 is a switching power supply according to an embodiment of the present invention;
fig. 6 is a diagram of an intelligent switching power supply according to an embodiment of the present invention.
Detailed Description
Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described herein are only for illustration and are not intended to limit the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known circuits, materials, or methods have not been described in detail in order to avoid obscuring the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment," "in an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present. Like reference numerals refer to like elements. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 2 is an energy recovery circuit 200 according to an embodiment of the present invention, which has an inductive energy storage unit L1, including: a first switch SW1 having a first terminal, a second terminal and a control terminal, wherein the first terminal is electrically coupled to the first terminal VD1 of the inductive energy storage unit L1; a second switch tube SW2 having a first end electrically coupled to the second end VD2 of the first switch tube SW1, a second end electrically coupled to ground, and a control end; a switching circuit 210 having a first terminal, a second terminal and a control terminal, wherein the first terminal is electrically coupled to the second terminal of the first switch tube SW1 and the first terminal VD2 of the second switch tube SW 2; the driving control circuit 220 is electrically coupled to the first switch tube SW1, the second switch tube SW2 and the control terminals G1, G2 and G3 of the switching circuit 210, and controls the on and off of the first switch tube SW1, the second switch tube SW2 and the switching circuit 210; a first capacitor C2 having a first terminal VCC electrically coupled to the second terminal of the switching circuit 210 and a second terminal electrically coupled to ground (for descriptive convenience, the voltage VCC across the capacitor C2 is equivalent to the first terminal name of the capacitor C2); and a power conversion circuit 230 electrically coupled to the driving control circuit 220 for providing a supply voltage VDDH for the driving control circuit 220; the energy recovery circuit 200 charges the inductive energy storage unit L1 with two parts, the first part is that the charging current IL flows to ground through the first switch tube SW1 and the second switch tube SW2, the second part is that the charging current IL flows to ground through the first switch tube SW1, the switching circuit 210 and the first capacitor C2, and the energy recovery of the charging current IL to the inductive energy storage unit L1 is realized through the energy storage of the first capacitor C2.
In an embodiment of the present invention, as shown in fig. 3A, the power conversion circuit 230 of the energy recovery circuit 200 is electrically coupled to the external high voltage power supply terminal HV through a high voltage terminal of a high voltage isolation unit, in an embodiment, the high voltage terminal of the high voltage isolation unit is a drain terminal of a JFET or a depletion LDMOS; in one embodiment, the external high voltage supply terminal HV refers to a bus voltage after the rectifier bridge; the low-voltage end of the high-voltage isolation unit is electrically coupled with a voltage regulator, and in one embodiment, the low-voltage end of the high-voltage isolation unit refers to a source end of a JFET or a depletion type LDMOS; the voltage VCCH output by the voltage regulator is the supply voltage VCCH output by the power conversion circuit 230 to the drive control circuit 220, and the level of the voltage VCCH is higher than the level of the voltage VCC on the first capacitor C2. Therefore, the control signal G1 output by the driving control circuit 220S can quickly turn on the first switch SW1, so that the energy recovery circuit 200 can operate normally.
In an embodiment of the present invention, as shown in fig. 3A, the voltage regulator is a linear voltage regulator, including the adjustment tube MP1, the error amplifier OP1 and the feedback circuit K, the error comparison is performed by sampling the output voltage VCCH to obtain the sampling signal VCCH K and a reference voltage VREF, and the control end of the error voltage control adjustment tube MP1 is generated, so that the sampling voltage VCCH K becomes VREF.
In an embodiment of the present invention, the power conversion circuit 230 of the energy recovery circuit 200 includes a boost circuit inside, the voltage VCC on the first capacitor C2 is the input voltage of the boost circuit, the output voltage VCCH of the boost circuit is the power supply voltage of the power conversion circuit 230 to the driving control circuit 220, and the level of the output voltage VCCH of the boost circuit is higher than the level of the input voltage VCC.
In an embodiment of the present invention, as shown in fig. 3B, the boost voltage is a capacitor boost circuit, which includes switches SP1 and SP2, capacitors CP1 and CO1, and diodes DP1 and DP 2.
In an embodiment of the present invention, as shown in fig. 3C, the boost voltage is an inductive boost circuit, which includes a switch MB1, an inductor LB1, a capacitor CB1 and a diode DB 1.
In an embodiment of the present invention, as shown in fig. 3D, the switching circuit 210 of the energy recovery circuit 200 is a switch SW3, a first end of the switch SW3 is electrically coupled to the second end of the first switch SW1 and the first end VD2 of the second switch SW2, a second end of the switch SW3 is electrically coupled to the first end VCC of the first capacitor C2, a control end of the switch SW3 is electrically coupled to the output end G3 of the driving control circuit 220, when a voltage pulse of G3 is at a high level VCCH, and a level of the VCCH is higher than a voltage VCC on the first capacitor C2, the switch SW3 is turned on, and the switching circuit 210 can conduct current; when the voltage pulse of G3 is at a low level, the switch SW3 is turned off and the switching circuit 210 cannot conduct current.
In an embodiment of the present invention, as shown in fig. 3E, the switching circuit 210 of the energy recovery circuit 200 is a diode, the anode of the first end is electrically coupled to the second end of the first switch tube SW1 and the first end VD2 of the second switch tube SW2, the cathode of the second end is electrically coupled to the first end of the first capacitor C2, when the voltage of VD2 is higher than the VCC voltage, the switching circuit 210 can conduct current, and when the voltage of VD2 is lower than the VCC voltage, the switching circuit 210 cannot conduct current.
In an embodiment of the present invention, as shown in fig. 2, a driving control circuit 220 has a first input VCCH, a second input VCC, a third input PWM, a first output G1, a second output G2, and a third output G3, wherein the first input is electrically coupled to the output VCCH of the power conversion circuit 230, the second input is electrically coupled to the first end VCC of the first capacitor C2, the third input is electrically coupled with a voltage pulse PWM control signal, a first output signal G1, a second output signal G2, and a third output signal G3 generated by the driving control circuit 220 respectively control the on and off of the first switch SW1, the second switch SW2, and the switching circuit 210, and in combination with the waveform diagrams of fig. 4C, fig. 4D, and fig. 4E, wherein the voltage pulse high level VCCH of the first output signal G1 is higher than the level of the voltage VCC on the first capacitor C2 (fig. 4E VCC), or at least a part of the time, the high level VCCH is higher than the level of the voltage VCC on the first capacitor C2 (fig. 4C and 4D), and the voltage pulse high level VCCH of the third output terminal signal G3 is higher than the level of the voltage VCC on the first capacitor C2;
when the switching circuit 210 is a switch, as long as the voltage pulse high level VCCH of G3 is higher than VCC by a threshold voltage, the switching circuit 210 can conduct current, and the voltage of VD2 will be approximately equal to the voltage of VCC; as long as the voltage pulse high level VCCH of G1 is higher than VCC by a threshold voltage, the first switch SW1 can conduct current, and for simplicity of description, the threshold voltages of all switches and the forward conduction voltage drop of the diode are approximately equal to zero.
The waveform diagram of fig. 4E is taken as an example for detailed expansion, and fig. 4C and fig. 4D are similar in principle.
In the first phase T1 of a control cycle, G1 is kept at low level, the first switch SW1 is kept off, and the inductive energy storage unit L1 is not charged, in this phase, the VD1 voltage is kept at high level, and the state of the dotted line in fig. 4E represents an indeterminate state, which may be high level or low level;
during a second phase T2 of a control period, G2 is kept at a high level, the second switch SW2 is kept at a conducting state, G1 is kept at a high level, and a high level VCCH of G1 is higher than a level of VCC, the first switch SW1 is kept at a conducting state, the control signal G3 of the switching circuit 210 is kept at a low level, the switching circuit 210 is kept at a turning-off state, the charging current IL of the inductive energy storage unit L1 flows to the ground directly through the first switch SW1 and the second switch SW2, or flows to the ground through the current detection resistor Rcs, and during this phase, the VD1 voltage and the VD2 voltage are approximately equal to 0 voltage, or the voltage on the current detection resistor Rcs;
in a third phase T3 of a control cycle, G2 is kept at a low level, the second switch SW2 is kept off, the control signal G3 of the switching circuit 210 is kept at a high level, and the G3 high-level voltage VCCH is higher than the voltage VCC across the capacitor C2, so that the switching circuit 210 is kept on, G1 is kept at a high level, and the G1 high-level VCCH is higher than the voltage VCC across the capacitor C2, so that the first switch SW1 is kept on, the inductive energy storage unit L1 charging current IL flows to ground through the first switch SW1, the switching circuit 210 and the first capacitor C2, energy recovery of the inductive energy storage unit L1 charging current IL is achieved by energy storage of the first capacitor C2, and in this phase, the VD1 voltage and the VD2 voltage are approximately equal to the voltage VCC across the capacitor C2;
in the fourth phase T4 of one control cycle, G2 is kept at high level, the second switch SW2 is kept on, G1 is kept at high level, and the high level VCCH of G1 is higher than the level of VCC, the first switch SW1 is kept on, the control signal G3 of the switching circuit 210 is kept at low level, the switching circuit 210 is kept off, and the charging current IL of the inductive energy storage unit L1 flows to ground directly through the first switch SW1 and the second switch SW2 or flows to ground through the current detection resistor Rcs. At this stage, the VD1 voltage and the VD2 voltage are approximately equal to 0 voltage, or the voltage across the current sense resistor Rcs.
In an embodiment of the present invention, a driving control circuit 220, as shown in fig. 2, has a first input VCCH, a second input VCC, a third input voltage pulse signal PWM, a first output G1 and a second output G2, a first input terminal of the driving circuit is electrically coupled to the output terminal VCCH of the power conversion circuit 230, a second input terminal of the driving circuit is electrically coupled to the first terminal VCC of the first capacitor C2, a third input terminal of the driving circuit is electrically coupled to a voltage pulse PWM control signal, and a first output terminal signal G1 and a second output terminal signal G2 generated by the driving control circuit 220 respectively control the first switch tube SW1 and the second switch tube SW2 to be turned on and off, as can be seen in conjunction with the waveform diagrams of fig. 4A and 4B, wherein the voltage pulse high level VCCH of the first output terminal signal G1 is higher than the level of the voltage VCC on the first capacitor C2 (figure 4B), or at least a portion of the time, the high level VCCH is higher than the level of the voltage VCC across the first capacitor C2 (fig. 4A).
When the switching circuit 210 is a diode, the first switch SW1 can be turned on as long as the high level VCCH of the voltage pulse of G1 is higher than VCC plus a forward voltage drop of a diode.
The waveform diagram of fig. 4B is taken as an example for detailed expansion, and the principle of fig. 4A is similar.
In the first phase T1 of a control cycle, G1 is kept at low level, the first switch SW1 is kept off, and the inductive energy storage unit L1 is not charged, in this phase, the VD1 voltage is kept at high level, and the state of the dotted line in fig. 4B represents an indeterminate state, which may be high level or low level;
in a third phase T3 of a control cycle, G2 is kept at a low level, the second switch tube SW2 is kept off, the VD2 voltage is increased, when the VD2 voltage is increased to a voltage VCC higher than the voltage VCC of the first capacitor C2, the diode inside the switching circuit 210 is automatically turned on, at this time, the VD2 voltage is approximately equal to the VCC voltage, since G1 is kept at a high level, and the high level VCCH of G1 is higher than the voltage VCC on the capacitor C2, the first switch tube SW1 is kept on, the charging current IL of the inductive energy storage unit L1 flows to ground through the first switch tube SW1, the switching circuit 210 and the first capacitor C2, energy recovery of the charging current IL of the inductive energy storage unit L1 is realized through energy storage of the first capacitor C2, and in this phase, the VD1 voltage and the VD2 voltage are approximately equal to the voltage VCC on the capacitor C2;
in the fourth phase T4 of one control cycle, G2 is kept at high level, the second switch SW2 is kept on, VD2 is pulled down to low level, the switching circuit 210 is kept off, G1 is kept at high level, and the high level VCCH of G1 is higher than the level of VCC, the first switch SW1 is kept on, and the charging current IL of the inductive energy storage unit L1 flows to ground directly through the first switch SW1 and the second switch SW2, or flows to ground through the current detection resistor Rcs. During this phase, the VD1 voltage and the VD2 voltage are approximately equal to 0 voltage, or the voltage across the current sensing resistor Rcs, and no energy recovery is performed on the charging current IL of the inductive energy storage unit L1.
It should be noted that the operating state described in the above embodiments refers to the operating state of the energy recovery circuit 200 under a steady state condition, and under the condition that the power is just started or the system has not reached the steady state, the operating state of the energy recovery circuit 200 may be different, for example, in a control cycle, there may be fewer or additional other states, but these intermediate unstable states do not affect the final steady state operating state.
According to the utility model discloses an energy recuperation module of embodiment, include energy recuperation circuit.
Fig. 5 shows a switching power supply 600 according to an embodiment of the present invention, which includes an input circuit, an output circuit, and a load, and further includes the energy recovery module 611.
Fig. 6 illustrates an intelligent switching power supply 700 and an energy recovery system 710 according to an embodiment of the invention.
The energy recovery system 710 includes the energy recovery module 711; an auxiliary power module 712 is also included, wherein the auxiliary power module 712 is electrically coupled to the first capacitor C2 for converting the energy recovered by the first capacitor C2 to output an auxiliary power voltage VCCL.
The intelligent control switch power supply 700 comprises an input circuit, an output circuit, a load and an energy recovery system 710; the intelligent control module 721 is electrically coupled to the energy recovery system 710, and the intelligent control module 721 receives the power supplied by the auxiliary power voltage VCCL, and outputs an intelligent control signal DCTL to control the energy recovery system 710 in a feedback manner, so as to realize intelligent control of the switching power supply.
According to the utility model relates to an intelligent control module 721 of embodiment can be bluetooth module, the WIFI module, radar module, wireless control module such as infrared module.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims. For those skilled in the art, without departing from the principle of the present invention, several improvements and decorations can be made, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (13)
1. An energy recovery circuit having an inductive energy storage unit, comprising:
the first switch tube is provided with a first end, a second end and a control end, wherein the first end is electrically coupled to the first end of the inductive energy storage unit;
a second switch tube having a first end, a second end and a control end, wherein the first end is electrically coupled to the second end of the first switch tube, and the second end is electrically coupled to ground;
the switching circuit is provided with a first end, a second end and a control end, wherein the first end is electrically coupled to the second end of the first switching tube and the first end of the second switching tube;
the driving control circuit is electrically coupled to the first switch tube, the second switch tube and the control end of the switching circuit and controls the on and off of the first switch tube, the second switch tube and the switching circuit;
a first capacitor having a first end electrically coupled to the second end of the switching circuit and a second end electrically coupled to ground; and
the power supply conversion circuit is electrically coupled to the drive control circuit and provides a power supply voltage for the drive control circuit; wherein
The energy recovery circuit is used for charging the inductance energy storage unit and comprises two parts, the first part is that charging current flows to the ground through a first switching tube and a second switching tube, the second part is that the charging current flows to the ground through the first switching tube, a switching circuit and a first capacitor, and the energy recovery of the charging current of the inductance energy storage unit is realized through the energy storage of the first capacitor.
2. The energy recovery circuit of claim 1, wherein the power conversion circuit is electrically coupled to the external high voltage power supply terminal via a high voltage terminal of a high voltage isolation unit, and the low voltage terminal of the high voltage isolation unit is electrically coupled to a voltage regulator, wherein the voltage regulator outputs a voltage as the power supply voltage for the power conversion circuit to the driving control circuit, and the voltage has a level higher than the voltage on the first capacitor.
3. The energy recovery circuit of claim 2 wherein the voltage regulator is a linear voltage regulator including a regulator tube, an error amplifier and a feedback circuit.
4. The energy recovery circuit according to claim 1, wherein the power conversion circuit internally includes a voltage boost circuit, the voltage on the first capacitor is an input voltage of the voltage boost circuit, an output voltage of the voltage boost circuit is a supply voltage output by the power conversion circuit to the drive control circuit, and a level of the output voltage of the voltage boost circuit is higher than a level of the input voltage thereof.
5. The energy recovery circuit of claim 1 wherein the switching circuit is a switch having a first end electrically coupled to the second end of the first switching tube and the first end of the second switching tube, a second end electrically coupled to the first end of the first capacitor, and a control end electrically coupled to the driving control circuit.
6. The energy recovery circuit of claim 1 wherein the switching circuit is a diode having a first terminal electrically coupled anodically to the second terminal of the first switching tube and to the first terminal of the second switching tube, and a second terminal electrically coupled cathodically to the first terminal of the first capacitor.
7. The energy recovery circuit of claim 1 wherein the drive control circuit has a first input, a second input, a third input, a first output, a second output, and a third output, wherein the first input terminal is electrically coupled to the output terminal of the power conversion circuit, the second input terminal is electrically coupled to the first terminal of the first capacitor, the third input terminal is electrically coupled to a voltage pulse control signal, and the generated first output terminal signal, second output terminal signal and third output terminal signal respectively control the on/off of the first switch tube, the second switch tube and the switching circuit, wherein the high level of the voltage pulses of the signal at the first output terminal is higher than the level of the voltage on the first capacitor, or at least a part of the time, the high level is higher than the level of the voltage on the first capacitor, and the high level of the voltage pulse of the signal at the third output end is higher than the level of the voltage on the first capacitor.
8. The energy recovery circuit of claim 1, wherein the driving control circuit has a first input terminal, a second input terminal, a third input terminal, a first output terminal and a second output terminal, wherein the first input terminal is electrically coupled to the output terminal of the power conversion circuit, the second input terminal is electrically coupled to the first terminal of the first capacitor, and the third input terminal is electrically coupled to a voltage pulse control signal to generate a first output terminal signal and a second output terminal signal for controlling the first switch and the second switch to be turned on and off, respectively, wherein the high level of the voltage pulse of the first output terminal signal is higher than the level of the voltage on the first capacitor, or the high level of the voltage pulse of at least a portion of the time is higher than the level of the voltage on the first capacitor.
9. An energy recovery module comprising an energy recovery circuit according to any one of claims 1 to 8.
10. An energy recovery system comprising the energy recovery module of claim 9; the power supply further comprises an auxiliary power supply module, and the auxiliary power supply module converts the energy recovered from the first capacitor to output an auxiliary power supply voltage.
11. A switching power supply comprising an input circuit, an output circuit and a load, further comprising an energy recovery module according to claim 9.
12. A smart controlled switching power supply comprising an input circuit, an output circuit and a load, comprising the energy recovery system of claim 10; the intelligent control module receives the voltage of the auxiliary power supply for power supply, outputs an intelligent control signal for feedback control of the energy recovery system, and realizes intelligent control of the switching power supply.
13. The intelligent control switching power supply of claim 12, wherein the intelligent control module is a bluetooth module, a WIFI module, a radar module, or an infrared module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257457.5U CN210183223U (en) | 2019-08-05 | 2019-08-05 | Energy recovery circuit, energy recovery module, energy recovery system, switching power supply and intelligent control switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257457.5U CN210183223U (en) | 2019-08-05 | 2019-08-05 | Energy recovery circuit, energy recovery module, energy recovery system, switching power supply and intelligent control switching power supply |
Publications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI731772B (en) * | 2020-08-13 | 2021-06-21 | 宏碁股份有限公司 | Boost converter with low noise |
| CN113541444A (en) * | 2020-04-15 | 2021-10-22 | 芯好半导体(成都)有限公司 | Current recovery circuit, switch converter and integrated circuit |
| CN113541450A (en) * | 2020-04-15 | 2021-10-22 | 芯好半导体(成都)有限公司 | Drive circuit, switch converter and integrated circuit |
| CN116232011A (en) * | 2023-03-07 | 2023-06-06 | 禹创半导体(深圳)有限公司 | Voltage conversion device with energy recovery mechanism and power supply chip |
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2019
- 2019-08-05 CN CN201921257457.5U patent/CN210183223U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541444A (en) * | 2020-04-15 | 2021-10-22 | 芯好半导体(成都)有限公司 | Current recovery circuit, switch converter and integrated circuit |
| CN113541450A (en) * | 2020-04-15 | 2021-10-22 | 芯好半导体(成都)有限公司 | Drive circuit, switch converter and integrated circuit |
| CN113541444B (en) * | 2020-04-15 | 2023-03-24 | 成都中启易联科技有限公司 | Current recovery circuit, switch converter and integrated circuit |
| TWI731772B (en) * | 2020-08-13 | 2021-06-21 | 宏碁股份有限公司 | Boost converter with low noise |
| CN116232011A (en) * | 2023-03-07 | 2023-06-06 | 禹创半导体(深圳)有限公司 | Voltage conversion device with energy recovery mechanism and power supply chip |
| CN116232011B (en) * | 2023-03-07 | 2024-01-26 | 禹创半导体(深圳)有限公司 | Voltage conversion device with energy recovery mechanism and power supply chip |
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