rectifying device

Abstract

The application relates to a rectifying device, which comprises a first switch circuit, a second switch circuit, a first input switch tube, a first regulating switch tube, a second input switch tube and a second regulating switch tube, the first switch circuit comprises a first switch tube and a second switch tube, the second switch circuit comprises a first output switch tube and a second output switch tube, the control end of the first input switch tube is used for inputting a first input voltage, the control end of the first regulating switch tube is used for inputting a first regulating voltage, the control end of the second regulating switch tube is used for inputting a second regulating voltage, and the control end of the second input switch tube is used for inputting a second input voltage; by configuring the voltage values of the first regulating voltage and the second regulating voltage, the threshold value of rectification can be adjusted, the output of the rectifying device is simultaneously affected by the input voltage and the threshold value, the output of the rectifying device can be flexibly adjusted, the application range of the rectifying device is wider, and the rectifying device is reliable in use.

Description

TECHNICAL FIELD

[0001] The present application relates to the rectification technical field, in particular to a rectifier device. BACKGROUND

[0002] The rectifier circuit is a circuit that can convert alternating current signals into direct current signals, and is widely used in electronic design industry and SOC (System on Chip), for example, in the fields of speed regulation of direct current motor, excitation regulation of generator, electrolysis, electroplating, etc.

[0003] The traditional rectifier circuit can effectively output when the differential input is greater than 0 or the absolute value of the differential input is greater than 0. However, the threshold of the rectifier circuit is fixed, and the rectifier circuit cannot meet the working requirements when different rectification thresholds are needed, and is unreliable. SUMMARY

[0004] Therefore, it is necessary to provide a rectifier device to solve the problem of unreliable use of the traditional rectifier circuit.

[0005] A rectifier device includes a first switch circuit, a second switch circuit, a first input switch tube, a first adjustment switch tube, a second input switch tube and a second adjustment switch tube.

[0006] The first switch circuit includes a first switch tube and a second switch tube, and the second switch circuit includes a first output switch tube and a second output switch tube. The control end of the first switch tube and the control end of the second switch tube are connected to the second end of the first switch tube. The control end of the first output switch tube, the control end of the second output switch tube and the second end of the second switch tube are connected to the second end of the first output switch tube. The first end of the first switch tube, the first end of the second switch tube and the first end of the first output switch tube are connected to the first end of the second output switch tube. The second end of the second output switch tube is connected to the output end of the device.

[0007] The control end of the first input switch tube is used to input a first input voltage, the control end of the first adjustment switch tube is used to input a first adjustment voltage, the control end of the second adjustment switch tube is used to input a second adjustment voltage, and the control end of the second input switch tube is used to input a second input voltage.

[0008] The first end of the first input switch tube and the first end of the second regulating switch tube are connected to the second end of the first switch tube, the first end of the first regulating switch tube and the first end of the second input switch tube are connected to the second end of the second switch tube, and the second end of the first input switch tube, the second end of the first regulating switch tube, the second end of the second input switch tube and the second end of the second regulating switch tube are connected to a current source.

[0009] In one of the embodiments, the number of the second output switch tubes is more than two, each of the second output switch tubes is connected in parallel, the first end after parallel connection is connected to the first end of the first output switch tube, and the second end after parallel connection is connected to the device output end.

[0010] In one of the embodiments, the third input switch tube, the third regulating switch tube, the fourth input switch tube and the fourth regulating switch tube are further included, the first switch circuit further includes a third switch tube and a fourth switch tube, and the second switch circuit further includes a third output switch tube and a fourth output switch tube.

[0011] The control end of the third switch tube and the control end of the fourth switch tube are connected to the second end of the third switch tube, the control end of the third output switch tube, the control end of the fourth output switch tube and the second end of the fourth switch tube are connected to the second end of the third output switch tube, the first end of the third switch tube, the first end of the fourth switch tube, the first end of the third output switch tube and the first end of the fourth output switch tube are connected to the first end of the second output switch tube, and the second end of the fourth output switch tube is connected to the device output end.

[0012] The control end of the third input switch tube is used for inputting a second input voltage, the control end of the third regulating switch tube is used for inputting a first regulating voltage, the control end of the fourth regulating switch tube is used for inputting a second regulating voltage, and the control end of the fourth input switch tube is used for inputting a first input voltage.

[0013] The first end of the third input switch tube and the first end of the fourth regulating switch tube are connected to the second end of the third switch tube, the first end of the third regulating switch tube and the first end of the fourth input switch tube are connected to the second end of the fourth switch tube, and the second end of the third input switch tube, the second end of the third regulating switch tube, the second end of the fourth input switch tube and the second end of the fourth regulating switch tube are connected to the current source.

[0014] In one of the embodiments, the number of the fourth output switch tubes is more than two, each of the fourth output switch tubes is connected in parallel, the first end after parallel connection is connected to the first end of the third output switch tube, and the second end after parallel connection is connected to the device output end.

[0015] In one of the embodiments, a filter circuit is further included, and the filter circuit is connected to the output terminal of the device.

[0016] In one of the embodiments, the filter circuit includes a resistor and a capacitor, a first terminal of the resistor is connected to a first terminal of the capacitor, and the output terminal of the device, and a second terminal of the resistor and a second terminal of the capacitor are both grounded.

[0017] In one of the embodiments, the first input switch tube and the first regulating switch tube have the same size, and the second input switch tube and the second regulating switch tube have the same size.

[0018] In one of the embodiments, the first switch tube and the second switch tube have the same size, and the first output switch tube and the second output switch tube have the same size.

[0019] In one of the embodiments, the first input switch tube, the first regulating switch tube, the second input switch tube, the second regulating switch tube, the first switch tube, the second switch tube, the first output switch tube and the second output switch tube are all MOS tubes.

[0020] In one of the embodiments, the first input switch tube, the first regulating switch tube, the second input switch tube and the second regulating switch tube are all PMOS tubes, and the first switch tube, the second switch tube, the first output switch tube and the second output switch tube are all NMOS tubes.

[0021] The rectifier device comprises a first switch circuit, a second switch circuit, a first input switch tube, a first regulating switch tube, a second input switch tube and a second regulating switch tube, the first switch circuit comprises a first switch tube and a second switch tube, and the second switch circuit comprises a first output switch tube and a second output switch tube; the control end of the first switch tube and the control end of the second switch tube are connected to the second end of the first switch tube, the control end of the first output switch tube, the control end of the second output switch tube and the second end of the second switch tube are connected to the second end of the first output switch tube, the first end of the first switch tube, the first end of the second switch tube and the first end of the first output switch tube are connected to the first end of the second output switch tube, and the second end of the second output switch tube is connected to the device output end; the control end of the first input switch tube is used for inputting a first input voltage, the control end of the first regulating switch tube is used for inputting a first regulating voltage, the control end of the second regulating switch tube is used for inputting a second regulating voltage, and the control end of the second input switch tube is used for inputting a second input voltage; the first end of the first input switch tube and the first end of the second regulating switch tube are connected to the second end of the first switch tube, the first end of the first regulating switch tube and the first end of the second input switch tube are connected to the second end of the second switch tube, and the second end of the first input switch tube, the second end of the first regulating switch tube, the second end of the second input switch tube and the second end of the second regulating switch tube are connected to a current source. Based on the structure of the device, when the difference between the first input voltage and the second input voltage is different from the difference between the first regulating voltage and the second regulating voltage, the device output end rises or falls in different size periods, the purpose of rectification is achieved, the threshold value of rectification can be adjusted by configuring the voltage values of the first regulating voltage and the second regulating voltage, the output of the rectifier device is simultaneously affected by the input voltage and the threshold value, the output of the rectifier device is flexibly adjusted, the application range of the rectifier device is wider, and the rectifier device is reliable in use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural diagram of the rectifier device in an embodiment;

[0023] Figure 2 It is a structural diagram of the rectifier device in another embodiment;

[0024] Figure 3 It is a current waveform diagram of the rectifier device in an embodiment;

[0025] Figure 4 It is a current waveform diagram of the rectifier device in another embodiment. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0027] In one embodiment, a rectifier device is provided, which can convert alternating current energy into direct current energy and then transmit to the load through the device output end for the load to work. Please see Figure 1 The rectifier device includes a first switch circuit 110, a second switch circuit 120, a first input switch tube M3, a first regulating switch tube M6, a second input switch tube M4 and a second regulating switch tube M5. The first switch circuit 110 includes a first switch tube Mm and a second switch tube Mp, and the second switch circuit 120 includes a first output switch tube M1 and a second output switch tube M2.

[0028] The connection relationship of the first input switch tube M3, the first regulating switch tube M6, the second input switch tube M4, the second regulating switch tube M5, the first switch tube Mm, the second switch tube Mp, the first output switch tube M1 and the second output switch tube M2 includes that the control end of the first switch tube Mm and the control end of the second switch tube Mp are both connected to the second end of the first switch tube Mm, the control end of the first output switch tube M1, the control end of the second output switch tube M2 and the second end of the second switch tube Mp are all connected to the second end of the first output switch tube M1, the first end of the first switch tube Mm, the first end of the second switch tube Mp and the first end of the first output switch tube M1 are all connected to the first end of the second output switch tube M2, and the second end of the second output switch tube M2 is connected to the device output end. The control end of the first input switch tube M3 is used to input the first input voltage VINM, the control end of the first regulating switch tube M6 is used to input the first regulating voltage VREFM, the control end of the second regulating switch tube M5 is used to input the second regulating voltage VREFP, and the control end of the second input switch tube M4 is used to input the second input voltage VINP. The first end of the first input switch tube M3 and the first end of the second regulating switch tube M5 are both connected to the second end of the first switch tube Mm, the first end of the first regulating switch tube M6 and the first end of the second input switch tube M4 are both connected to the second end of the second switch tube Mp, and the second end of the first input switch tube M3, the second end of the first regulating switch tube M6, the second end of the second input switch tube M4 and the second end of the second regulating switch tube M5 are all connected to the current source.

[0029] Specifically, the voltage of the second end of each of the above-mentioned switch tubes increases with the increase of the voltage of the control end of each switch tube, and each switch tube works in a saturated state. The control end of the first input switch tube M3 is used to input the first input voltage VINM, the control end of the first regulating switch tube M6 is used to input the first regulating voltage VREFM, the control end of the second regulating switch tube M5 is used to input the second regulating voltage VREFP, and the control end of the second input switch tube M4 is used to input the second input voltage VINP. Based on the connection relationship of the first input switch tube M3, the first regulating switch tube M6, the second input switch tube M4, the second regulating switch tube M5, the first switch tube Mm, the second switch tube Mp, the first output switch tube M1 and the second output switch tube M2, the working process of the rectifier device includes:

[0030] When the difference between the second input voltage VINP and the first input voltage VINM is equal to the difference between the second regulating voltage VREFP and the first regulating voltage VREFM, i.e. the difference between the second input voltage VINP and the second regulating voltage VREFP is equal to the difference between the first input voltage VINM and the first regulating voltage VREFM, the voltage difference between the control end of the first input switch tube M3 and the control end of the first regulating switch tube M6 is equal to the voltage difference between the control end of the second input switch tube M4 and the control end of the second regulating switch tube M5, the current difference between the current I3 between the first end and the second end of the first input switch tube M3 and the current I6 between the first end and the second end of the first regulating switch tube M6 is equal to the current difference between the current I4 between the first end and the second end of the second input switch tube M4 and the current I5 between the first end and the second end of the second regulating switch tube M5, so that the current Im between the first end and the second end of the first switch tube Mm is equal to the current Ip between the first end and the second end of the second switch tube Mp, and also equal to the sum of the current I3 between the first end and the second end of the first input switch tube M3 and the current I6 between the first end and the second end of the first regulating switch tube M6, and also equal to the sum of the current I4 between the first end and the second end of the second input switch tube M4 and the current I5 between the first end and the second end of the second regulating switch tube M5. At this time, the current value I1 between the first end and the second end of the first output switch tube M1 is 0, the current value I2 between the first end and the second end of the second output switch tube M2 is also 0, and the output current of the rectifier device is 0.

[0031] When the difference between the second input voltage VINP and the first input voltage VINM is less than the difference between the second regulating voltage VREFP and the first regulating voltage VREFM, i.e. the difference between the second input voltage VINP and the second regulating voltage VREFP is less than the difference between the first input voltage VINM and the first regulating voltage VREFM, the voltage difference between the control end of the second input switch tube M4 and the control end of the second regulating switch tube M5 is less than the voltage difference between the control end of the first input switch tube M3 and the control end of the first regulating switch tube M6, the current difference between the current I4 between the first end and the second end of the second input switch tube M4 and the current I5 between the first end and the second end of the second regulating switch tube M5 is less than the current difference between the current I3 between the first end and the second end of the first input switch tube M3 and the current I6 between the first end and the second end of the first regulating switch tube M6, thus, the current Im between the first end and the second end of the first switch tube Mm is equal to the current Ip between the first end and the second end of the second switch tube Mp, and is equal to the sum of the current I3 between the first end and the second end of the first input switch tube M3 and the current I6 between the first end and the second end of the first regulating switch tube M6, but is greater than the sum of the current I4 between the first end and the second end of the second input switch tube M4 and the current I5 between the first end and the second end of the second regulating switch tube M5. At this time, the current I1 between the first end and the second end of the first output switch tube M1 charges the second end of the first output switch tube M1 until the voltage at the second end of the first output switch tube M1 becomes high, the voltage at the second end of the second switch tube Mp becomes high, the second switch tube Mp enters the linear region, forcing the current sum of the current I4 between the first end and the second end of the second input switch tube M4 and the current I6 between the first end and the second end of the first regulating switch tube M6 to be equal to the current Ip between the first end and the second end of the second switch tube Mp, finally, the current I1 between the first end and the second end of the first output switch tube M1 is 0, the current value I2 between the first end and the second end of the second output switch tube M2 is also 0, and the output current of the rectifier device is 0.

[0032] When the difference between the second input voltage VINP and the first input voltage VINM is greater than the difference between the second regulating voltage VREFP and the first regulating voltage VREFM, i.e. the difference between the second input voltage VINP and the second regulating voltage VREFP is greater than the difference between the first input voltage VINM and the first regulating voltage VREFM, the voltage difference between the control end of the second input switch tube M4 and the control end of the second regulating switch tube M5 is greater than the voltage difference between the control end of the first input switch tube M3 and the control end of the first regulating switch tube M6, the current difference between the current I4 between the first end and the second end of the second input switch tube M4 and the current I5 between the first end and the second end of the second regulating switch tube M5 is greater than the current difference between the current I3 between the first end and the second end of the first input switch tube M3 and the current I6 between the first end and the second end of the first regulating switch tube M6, thus the current Im between the first end and the second end of the first switch tube Mm is equal to the current Ip between the first end and the second end of the second switch tube Mp, and is equal to the sum of the current I3 between the first end and the second end of the first input switch tube M3 and the current I6 between the first end and the second end of the first regulating switch tube M6, but is less than the sum of the current I4 between the first end and the second end of the second input switch tube M4 and the current I5 between the first end and the second end of the second regulating switch tube M5. At this time, the current I1 between the first end and the second end of the first output switch tube M1 is greater than 0, and the current I1 between the first end and the second end of the first output switch tube M1 increases with the increase of the current I1 between the first end and the second end of the first output switch tube M1. The greater the difference between the difference between the second input voltage VINP and the first input voltage VINM and the difference between the second regulating voltage VREFP and the first regulating voltage VREFM, the greater the current difference between the current I4 between the first end and the second end of the second input switch tube M4 and the current I5 between the first end and the second end of the second regulating switch tube M5 and the current difference between the current I3 between the first end and the second end of the first input switch tube M3 and the current I6 between the first end and the second end of the first regulating switch tube M6, the greater the current value I2 between the first end and the second end of the second output switch tube M2. Therefore, by configuring the voltage values of the first regulating voltage VREFM and the second regulating voltage VREFP, the threshold value of the rectification can be adjusted. In the period when the difference between the second input voltage VINP and the first input voltage VINM is greater than the difference between the second regulating voltage VREFP and the first regulating voltage VREFM, the voltage output by the device output end slowly rises, and in the period when the difference between the second input voltage VINP and the first input voltage VINM is less than the difference between the second regulating voltage VREFP and the first regulating voltage VREFM, the voltage output by the device output end slowly decreases, realizing the rectification effect.In addition, the current source connected to the second end of the first input switch tube M3, the second end of the first regulating switch tube M6, the second end of the second input switch tube M4 and the second end of the second regulating switch tube M5 is a stable current source, and can be connected to the same current source to provide stable electric energy and guarantee the performance of the rectifier device.

[0033] In one embodiment, the number of the second output switch tubes M2 is two or more, each of the second output switch tubes M2 is connected in parallel, the first end after parallel connection is connected to the first end of the first output switch tube M1, and the second end after parallel connection is connected to the device output end.

[0034] Specifically, each of the second output switch tubes M2 is connected in parallel, the first end after parallel connection is connected to the first end of the first output switch tube M1, and the second end after parallel connection is connected to the device output end, and the current output by the device output end is the sum of the currents between the first end and the second end of each of the second output switch tubes M2, which increases with the increase of the current I1 between the first end and the second end of the first output switch tube M1. When the number of the second output switch tubes M2 is two or more, the number of the second output switch tubes M2 can be set according to the demand, and the flexibility of the rectifier device is increased.

[0035] In one embodiment, please refer to Figure 2 , the rectifier device further comprises a third input switch tube M10, a third regulating switch tube M11, a fourth input switch tube M9 and a fourth regulating switch tube M12, the first switch circuit 110 further comprises a third switch tube Mt and a third switch tube Ms, and the second switch circuit 120 further comprises a third output switch tube M7 and a fourth output switch tube M8. The control end of the third switch tube Mt and the control end of the third switch tube Ms are both connected to the second end of the third switch tube Mt, the control end of the third output switch tube M7, the control end of the fourth output switch tube M8 and the second end of the third switch tube Ms are all connected to the second end of the third output switch tube M7, the first end of the third switch tube Mt, the first end of the third switch tube Ms, the first end of the third output switch tube M7 and the first end of the fourth output switch tube M8 are all connected to the first end of the second output switch tube M2, and the second end of the fourth output switch tube M8 is connected to the device output end.

[0036] The control end of the third input switch tube M10 is used for connecting the second input voltage VINP, the control end of the third regulating switch tube M11 is used for connecting the first regulating voltage VREFM, the control end of the fourth regulating switch tube M12 is used for connecting the second regulating voltage VREFP, and the control end of the fourth input switch tube M9 is used for connecting the first input voltage VINM. The first end of the third input switch tube M10 and the first end of the fourth regulating switch tube M12 are both connected to the second end of the third switch tube Mt, the first end of the third regulating switch tube M11 and the first end of the fourth input switch tube M9 are both connected to the second end of the third switch tube Ms, and the second end of the third input switch tube M10, the second end of the third regulating switch tube M11, the second end of the fourth input switch tube M9 and the second end of the fourth regulating switch tube M12 are all connected to the current source.

[0037] Specifically, the rectifier device includes a first rectifier circuit, the first rectifier circuit includes a first input switch tube M3, a first regulating switch tube M6, a second input switch tube M4, a second regulating switch tube M5, a first switch tube Mm, a second switch tube Mp, a first output switch tube M1 and a second output switch tube M2, and based on the first rectifier circuit, the rectifier device can realize half-wave rectification. In the embodiment, the rectifier device further includes a third input switch tube M10, a third regulating switch tube M11, a fourth input switch tube M9 and a fourth regulating switch tube M12, the first switch circuit 110 further includes a third switch tube Mt and a third switch tube Ms, and the second switch circuit 120 further includes a third output switch tube M7 and a fourth output switch tube M8, wherein the third input switch tube M10, the third regulating switch tube M11, the fourth input switch tube M9, the fourth regulating switch tube M12, the third switch tube Mt, the third switch tube Ms, the third output switch tube M7 and the fourth output switch tube M8 can also form a half-wave rectifier circuit, i.e. a second rectifier circuit, and the second end of the fourth output switch tube M8 is connected to the device output end. At this time, the rectifier device includes two half-wave rectifier circuits, i.e. the first rectifier circuit and the second rectifier circuit, and the first rectifier circuit and the second rectifier circuit both output current through the device output end, so that the rectifier device can realize full-wave rectification.

[0038] Specifically, the third regulating switch tube M11 corresponds to the first regulating switch tube M6, and both are used to access the first regulating voltage VREFM; the fourth regulating switch tube M12 corresponds to the second regulating switch tube M5, and both are used to access the second regulating voltage VREFP; the third input switch tube M10 corresponds to the first input switch tube M3, except that the control end of the third input switch tube M10 is used to access the second input voltage VINP, and the control end of the first input switch tube M3 is used to access the first input voltage VINM; the fourth input switch tube M9 corresponds to the second input switch tube M4, except that the control end of the fourth input switch tube M9 is used to access the first input voltage VINM, and the control end of the second input switch tube M4 is used to access the second input voltage VINP.

[0039] The first rectifier circuit comprises a first input switch tube M3, a first regulating switch tube M6, a second input switch tube M4, a second regulating switch tube M5, a first switch tube Mm, a second switch tube Mp, a first output switch tube M1 and a second output switch tube M2, and the second rectifier circuit comprises a third input switch tube M10, a third regulating switch tube M11, a fourth input switch tube M9, a fourth regulating switch tube M12, a third switch tube Mt, a third switch tube Ms, a third output switch tube M7 and a fourth output switch tube M8.

[0040] When the difference between the second input voltage VINP and the first input voltage VINM is greater than the difference between the second regulating voltage VREFP and the first regulating voltage VREFM, the output current of the first rectifier circuit increases with the increase of the difference between the second input voltage VINP and the first input voltage VINM, and otherwise the output current of the first rectifier circuit is 0. When the difference between the second input voltage VINP and the first input voltage VINM is greater than the difference between the second regulating voltage VREFP and the first regulating voltage VREFM, the output current of the second rectifier circuit increases with the increase of the difference between the first input voltage VINM and the second input voltage VINP, and otherwise the output current of the second rectifier circuit is 0. The output current of the first rectifier circuit and the output current of the second rectifier circuit are added and output through the device output end. The first rectifier circuit detects the signal that the second input voltage VINP is greater than the first input voltage VINM, and the second rectifier circuit can detect the signal that the first input voltage VINM is greater than the second input voltage VINP due to the switch tube pair connected by the first input voltage VINM and the second input voltage VINP, so that the rectifier device realizes the function of full-wave rectification.

[0041] In one embodiment, the number of fourth output switch tubes M8 is two or more, each fourth output switch tube M8 is connected in parallel, the first end of the parallel connection is connected to the first end of the third output switch tube M7, and the second end of the parallel connection is connected to the device output end.

[0042] Specifically, the fourth output switch tubes M8 are connected in parallel, the first end of the parallel connection is connected to the first end of the third output switch tube M7, and the second end of the parallel connection is connected to the device output end. The current output by the device output end is the sum of the current between the first end and the second end of each fourth output switch tube M8 and the current between the first end and the second end of the second output switch tube M2. The sum of the currents increases as the current between the first end and the second end of the third output switch tube M7 increases. When the number of fourth output switch tubes M8 is two or more, the number of fourth output switch tubes M8 can be set according to requirements, thereby increasing the flexibility of the rectifier device.

[0043] In one embodiment, referring to Figures 1-2 The rectifier device further includes a filter circuit 200 connected to the device output end. The rectifier device can be connected to a load through the filter circuit 200. The voltage output by the device output end passes through the filter circuit 200. The filter circuit 200 can filter out the alternating component in the pulsed direct current voltage output by the device output end, thereby improving the power quality output by the rectifier device.

[0044] The structure of the filter circuit 200 is not unique. In one embodiment, the filter circuit 200 includes a resistor R and a capacitor C. The first end of the resistor R is connected to the first end of the capacitor C and to the device output end. The second end of the resistor R and the second end of the capacitor C are both grounded. The resistor R and the capacitor C are combined, the filtering effect is good, the use cost is low, and the filtering can also function as voltage reduction and current limiting. It can be understood that in other embodiments, the filter circuit 200 can also include other structures, such as an inductor and a capacitor C, as long as it is considered to be realized by those skilled in the art.

[0045] In one embodiment, the first input switch tube M3 and the first regulating switch tube M6 are the same size, and the second input switch tube M4 and the second regulating switch tube M5 are the same size. The first input switch tube M3 and the first regulating switch tube M6 form a differential pair, and the second input switch tube M4 and the second regulating switch tube M5 also form a differential pair. When the first input switch tube M3 and the first regulating switch tube M6 are the same size, and the second input switch tube M4 and the second regulating switch tube M5 are the same size, two switch tubes with the same structure are included in a differential pair, which can make the structure of the differential pair symmetrical, thereby improving the stability of the circuit. Further, the first input switch tube M3 and the first regulating switch tube M6 are the same model, and the second input switch tube M4 and the second regulating switch tube M5 are also the same model, further improving the symmetry of the circuit.

[0046] In one embodiment, the first switch tube Mm and the second switch tube Mp have the same size, and the first output switch tube M1 and the second output switch tube M2 have the same size. Similar to the foregoing, the first switch tube Mm and the second switch tube Mp form a differential pair, and the first output switch tube M1 and the second output switch tube M2 also form a differential pair. When the first switch tube Mm and the second switch tube Mp have the same size, and the first output switch tube M1 and the second output switch tube M2 have the same size, the two switch tubes having the same structure are included in one differential pair, which can make the structure of the differential pair symmetrical, and is beneficial to improve the stability of the circuit. Further, when the number of the second output switch tubes M2 is more than two, each second output switch tube has the same size as the first output switch tube M1. In addition, the first switch tube Mm and the second switch tube Mp have the same model, and the first output switch tube M1 and the second output switch tube M2 also have the same model, which further improves the symmetry of the circuit.

[0047] When the rectifier device further includes a third input switch tube M10, a third regulating switch tube M11, a fourth input switch tube M9 and a fourth regulating switch tube M12, the first switch circuit 110 further includes a third switch tube Mt and a third switch tube Ms, and the second switch circuit 120 further includes a third output switch tube M7 and a fourth output switch tube M8, the third input switch tube M10 and the third regulating switch tube M11 have the same size, the fourth input switch tube M9 and the fourth regulating switch tube M12 have the same size, the third switch tube Mt and the third switch tube Ms have the same size, and the third output switch tube M7 and the fourth output switch tube M8 have the same size, so that the rectifier device has better working performance when performing full-wave rectification.

[0048] In one embodiment, the first input switch tube M3, the first regulating switch tube M6, the second input switch tube M4, the second regulating switch tube M5, the first switch tube Mm, the second switch tube Mp, the first output switch tube M1 and the second output switch tube M2 are all MOS tubes. The MOS tube control mode is convenient, and has the advantages of good thermal stability, strong anti-interference ability, low power consumption, small size, light weight, long service life and the like, and can greatly improve the service life and working performance of the rectifier device when applied in the rectifier device. In addition, when the rectifier device further includes a third input switch tube M10, a third regulating switch tube M11, a fourth input switch tube M9 and a fourth regulating switch tube M12, the first switch circuit 110 further includes a third switch tube Mt and a third switch tube Ms, and the second switch circuit 120 further includes a third output switch tube M7 and a fourth output switch tube M8, the third input switch tube M10, the third regulating switch tube M11, the fourth input switch tube M9, the fourth regulating switch tube M12, the third switch tube Mt, the third switch tube Ms, the third output switch tube M7 and the fourth output switch tube M8 are also all MOS tubes. It can be understood that in other embodiments, the switch tubes included in the rectifier device can also be triodes and the like, which can be set according to actual conditions, and are not limited herein.

[0049] In one embodiment, the first input switch tube M3, the first regulating switch tube M6, the second input switch tube M4 and the second regulating switch tube M5 are all PMOS tubes, and the first switch tube Mm, the second switch tube Mp, the first output switch tube M1 and the second output switch tube M2 are all NMOS tubes.

[0050] Specifically, when the first input switch tube M3, the first regulating switch tube M6, the second input switch tube M4 and the second regulating switch tube M5 are all PMOS tubes, the control end of the first input switch tube M3, the first regulating switch tube M6, the second input switch tube M4 and the second regulating switch tube M5 is the gate of the PMOS tube, the first end of the first input switch tube M3, the first regulating switch tube M6, the second input switch tube M4 and the second regulating switch tube M5 is the drain of the PMOS tube, and the second end of the first input switch tube M3, the first regulating switch tube M6, the second input switch tube M4 and the second regulating switch tube M5 is the source of the PMOS tube. When the first switch tube Mm, the second switch tube Mp, the first output switch tube M1 and the second output switch tube M2 are all NMOS tubes, the control end of the first switch tube Mm, the second switch tube Mp, the first output switch tube M1 and the second output switch tube M2 is the gate of the NMOS tube, the first end of the first switch tube Mm, the second switch tube Mp, the first output switch tube M1 and the second output switch tube M2 is the source of the NMOS tube, and the second end of the first switch tube Mm, the second switch tube Mp, the first output switch tube M1 and the second output switch tube M2 is the drain of the NMOS tube.

[0051] When the rectifier device further comprises a third input switch tube M10, a third regulating switch tube M11, a fourth input switch tube M9 and a fourth regulating switch tube M12, the first switch circuit 110 further comprises a third switch tube Mt and a third switch tube Ms, and the second switch circuit 120 further comprises a third output switch tube M7 and a fourth output switch tube M8, the third input switch tube M10, the third regulating switch tube M11, the fourth input switch tube M9 and the fourth regulating switch tube M12 are PMOS tubes, and the third switch tube Mt, the third switch tube Ms, the third output switch tube M7 and the fourth output switch tube M8 are NMOS tubes.

[0052] Specifically, when the third input switch tube M10, the third regulating switch tube M11, the fourth input switch tube M9 and the fourth regulating switch tube M12 are PMOS tubes, the control end of the third input switch tube M10, the third regulating switch tube M11, the fourth input switch tube M9 and the fourth regulating switch tube M12 is the gate of the PMOS tube, the first end of the third input switch tube M10, the third regulating switch tube M11, the fourth input switch tube M9 and the fourth regulating switch tube M12 is the drain of the PMOS tube, and the second end of the third input switch tube M10, the third regulating switch tube M11, the fourth input switch tube M9 and the fourth regulating switch tube M12 is the source of the PMOS tube. When the third switch tube Mt, the third switch tube Ms, the third output switch tube M7 and the fourth output switch tube M8 are NMOS tubes, the control end of the third switch tube Mt, the third switch tube Ms, the third output switch tube M7 and the fourth output switch tube M8 is the gate of the NMOS tube, the first end of the third switch tube Mt, the third switch tube Ms, the third output switch tube M7 and the fourth output switch tube M8 is the source of the NMOS tube, and the second end of the third switch tube Mt, the third switch tube Ms, the third output switch tube M7 and the fourth output switch tube M8 is the drain of the NMOS tube.

[0053] The rectifier device includes a first switch circuit 110, a second switch circuit 120, a first input switch tube M3, a first regulating switch tube M6, a second input switch tube M4, and a second regulating switch tube M5, the first switch circuit 110 includes a first switch tube Mm and a second switch tube Mp, and the second switch circuit 120 includes a first output switch tube M1 and a second output switch tube M2; the control end of the first switch tube Mm and the control end of the second switch tube Mp are connected to the second end of the first switch tube Mm, the control end of the first output switch tube M1, the control end of the second output switch tube M2, and the second end of the second switch tube Mp are connected to the second end of the first output switch tube M1, the first end of the first switch tube Mm, the first end of the second switch tube Mp, and the first end of the first output switch tube M1 are connected to the first end of the second output switch tube M2, and the second end of the second output switch tube M2 is connected to the device output end; the control end of the first input switch tube M3 is used for inputting a first input voltage VINM, the control end of the first regulating switch tube M6 is used for inputting a first regulating voltage VREFM, the control end of the second regulating switch tube M5 is used for inputting a second regulating voltage VREFP, and the control end of the second input switch tube M4 is used for inputting a second input voltage VINP; the first end of the first input switch tube M3 and the first end of the second regulating switch tube M5 are connected to the second end of the first switch tube Mm, the first end of the first regulating switch tube M6 and the first end of the second input switch tube M4 are connected to the second end of the second switch tube Mp, and the second end of the first input switch tube M3, the second end of the first regulating switch tube M6, the second end of the second input switch tube M4, and the second end of the second regulating switch tube M5 are connected to a current source. Based on the structure of the above device, when the difference between the first input voltage VINM and the second input voltage VINP is different from the size of the difference between the first regulating voltage VREFM and the second regulating voltage VREFP, the device output end rises or falls on different size periods, achieving the purpose of rectification. By configuring the voltage values of the first regulating voltage VREFM and the second regulating voltage VREFP, the threshold value of the rectification can be adjusted, the output of the rectifier device is affected by the input voltage and the threshold value at the same time, thereby flexibly adjusting the output of the rectifier device, making the application range of the rectifier device wider and the use more reliable.

[0054] In order to better understand the above-mentioned embodiments, the following will be explained in detail in combination with a specific embodiment. In one embodiment, please refer to Figure 1 , the rectifier device includes a first switch circuit 110, a second switch circuit 120, a first input switch tube M3, a first regulating switch tube M6, a second input switch tube M4, a second regulating switch tube M5, and a filter circuit 200, the first switch circuit 110 includes a first switch tube Mm and a second switch tube Mp, the second switch circuit 120 includes a first output switch tube M1 and a second output switch tube M2, and the filter circuit 200 includes a resistor R and a capacitor C.

[0055] The rectifier device includes two sets of differential input pairs, i.e. M3 / M6 and M4 / M5, corresponding to two equal tail currents Ibias, Ibias being a stable current source. The differential input signal includes a first input voltage VINM and a second input voltage VINP, and the reference voltage includes a first regulating voltage VREFM and a second regulating voltage VREFP. When VINP-VINM=VREFP-VREFM, i.e. VINP-VREFP=VINM-VREFM, the gate-source voltage difference of the differential pair M4 / M5 is equal to that of the differential pair M3 / M6, and the difference between the drain-source currents of the two sets of differential pairs is also equal, i.e. I4-I5=I3-I6, thus Ip=Im=I3+I5=I4+I6, I1=I4+I6-Ip=Im-Ip=0, and I2=K*I1=0. When VINP-VINM<VREFP-VREFM, i.e. VINP-VREFP<VINM-VREFM, the gate-source voltage difference of the differential pair M4 / M5 is smaller than that of the differential pair M3 / M6, and the difference between the drain-source currents of M4 / M5 is smaller than that of M3 / M6, i.e. I4-I5<I3-I6, thus Ip=Im=I3+I5>I4+I6, the Ip current charges the X point until the voltage of the X point becomes high, the Mp tube enters the linear region, forcing I4+I6=Ip, at which time I1=I4+I6-Ip=0, and I2=K*I1=0. When VINP-VINM>VREFP-VREFM, i.e. VINP-VREFP>VINM-VREFM, the gate-source voltage difference of the differential pair M4 / M5 is larger than that of the differential pair M3 / M6, and the difference between the drain-source currents of M4 / M5 is larger than that of M3 / M6, i.e. I4-I5>I3-I6, thus Ip=Im=I3+I5<I4+I6, at which time I1=I4+I6-Ip=I4+I6-I3-I5>0, and I2=K*I1=K*(I4+I6-I3-I5), the larger VINP-VINM is than VREFP-VREFM, the larger the difference between the drain-source currents of M4 / M5 is than that of M3 / M6, and the larger I4+I6-I3-I5 and I2 are. Therefore, by configuring the voltage values of VREFP and VREFM, the threshold of the rectification can be adjusted. Please refer to Figure 3 Due to the effect of the filter circuit, the voltage VOUT output at the output end of the device slowly rises in the period of VINP-VINM>VREFP-VREFM, and slowly falls in the period of VINP-VINM<VREFP-VREFM.

[0056] Please refer to Figure 2, the rectifier device can further include a third input switch tube, a third regulating switch tube, a fourth input switch tube, a fourth regulating switch tube, a third switch tube, a fourth switch tube, a third output switch tube and a fourth output switch tube, so as to realize full-wave rectification. The rectifier device includes two half-wave rectification circuits, the left rectification circuit is a first rectification circuit, and the right rectification circuit is a second rectification circuit. The first rectification circuit and the second rectification circuit share a filter circuit. The left rectification circuit is the same as in Figure 1 , and the difference between the right rectification circuit and in Figure 1 is that the connection mode of VINP and VINM is reversed. When VINP-VINM>VREFP-VREFM, the output current I2 of the left half-wave rectification circuit increases with the increase of (VINP-VINM), and otherwise I2=0; when VINM-VINP>VREFP-VREFM, the output current I8 of the right half-wave rectification circuit increases with the increase of (VINM-VINP), and otherwise I8=0; I2 and I8 are added together, and then the sum is converted into a voltage and filtered to be output. Please refer to Figure 4 , the left rectification circuit detects the signal that VINP is greater than VINM, and the right rectification circuit can detect the signal that VINM is greater than VINP because VINP and VINM are reversed, so as to realize the function of full-wave rectification.

[0057] It can be understood that in the embodiment, the NMOS tube can be replaced by a PMOS tube, and the PMOS tube can also be replaced by an NMOS tube, and the same function can also be realized. Alternatively, the MOS tube can also be replaced by a corresponding triode in whole or in part.

[0058] The rectifier device adds a threshold-adjustable function module to a traditional rectification circuit, so that the output of the rectifier device is simultaneously affected by the input signal and the threshold, thereby flexibly adjusting the output of the rectifier device, and making the application range of the rectifier device wider and the use more reliable.

[0059] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0060] The above-described embodiments only express several implementation manners of the present disclosure, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present disclosure, a number of modifications and improvements can be made, which are all within the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure should be subject to the appended claims.

Claims

1. A rectifier, characterized in that, It includes a first switching circuit, a second switching circuit, a first input switching transistor, a first regulating switching transistor, a second input switching transistor, and a second regulating switching transistor; The first switching circuit includes a first switching transistor and a second switching transistor, and the second switching circuit includes a first output switching transistor and a second output switching transistor; the control terminals of the first switching transistor and the second switching transistor are both connected to the second terminal of the first switching transistor, the control terminals of the first output switching transistor, the second output switching transistor, and the second terminal of the second switching transistor are all connected to the second terminal of the first output switching transistor, the first terminal of the first switching transistor, the first terminal of the second switching transistor, and the first terminal of the first output switching transistor are all connected to the first terminal of the second output switching transistor, and the second terminal of the second output switching transistor is connected to the device output terminal; The control terminal of the first input switch is used to connect to the first input voltage, the control terminal of the first regulating switch is used to connect to the first regulating voltage, the control terminal of the second regulating switch is used to connect to the second regulating voltage, and the control terminal of the second input switch is used to connect to the second input voltage. The first end of the first input switch and the first end of the second regulating switch are both connected to the second end of the first switch. The first end of the first regulating switch and the first end of the second input switch are both connected to the second end of the second switch. The second ends of the first input switch, the first regulating switch, the second input switch, and the second regulating switch are all connected to a current source.

2. The rectifier according to claim 1, characterized in that, The number of second output switching transistors is two or more, and each second output switching transistor is connected in parallel. The first end of the parallel connection is connected to the first end of the first output switching transistor, and the second end of the parallel connection is connected to the output terminal of the device.

3. The rectifier according to claim 1, characterized in that, It also includes a third input switch, a third regulating switch, a fourth input switch, and a fourth regulating switch. The first switching circuit also includes a third switch and a fourth switch, and the second switching circuit also includes a third output switch and a fourth output switch. The control terminals of the third and fourth switches are both connected to the second terminal of the third switch. The control terminals of the third, fourth, and fourth output switches are all connected to the second terminal of the third output switch. The first terminals of the third, fourth, third, and fourth output switches are all connected to the first terminal of the second output switch. The second terminal of the fourth output switch is connected to the output terminal of the device. The control terminal of the third input switch is used to connect to the second input voltage, the control terminal of the third regulating switch is used to connect to the first regulating voltage, the control terminal of the fourth regulating switch is used to connect to the second regulating voltage, and the control terminal of the fourth input switch is used to connect to the first input voltage. The first end of the third input switch and the first end of the fourth regulating switch are both connected to the second end of the third switch. The first end of the third regulating switch and the first end of the fourth input switch are both connected to the second end of the fourth switch. The second ends of the third input switch, the third regulating switch, the fourth input switch, and the fourth regulating switch are all connected to the current source.

4. The rectifier according to claim 3, characterized in that, The number of fourth output switches is two or more, and each of the fourth output switches is connected in parallel. The first end of the parallel connection is connected to the first end of the third output switch, and the second end of the parallel connection is connected to the output end of the device.

5. The rectifier according to claim 1, characterized in that, It also includes a filter circuit, which is connected to the output of the device.

6. The rectifier according to claim 5, characterized in that, The filter circuit includes a resistor and a capacitor. The first end of the resistor is connected to the first end of the capacitor and to the output terminal of the device. The second ends of the resistor and the second ends of the capacitor are both grounded.

7. The rectifier according to claim 1, characterized in that, The first input switch transistor and the first regulating switch transistor have the same size, and the second input switch transistor and the second regulating switch transistor have the same size.

8. The rectifier according to claim 1, characterized in that, The first and second switching transistors are the same size, and the first and second output switching transistors are the same size.

9. The rectifier according to claim 1, characterized in that, The first input switch, the first regulating switch, the second input switch, the second regulating switch, the first switch, the second switch, the first output switch, and the second output switch are all MOSFETs.

10. The rectifier according to claim 1, characterized in that, The first input switch, the first regulating switch, the second input switch, and the second regulating switch are all PMOS transistors, while the first switch, the second switch, the first output switch, and the second output switch are all NMOS transistors.

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