CN113179033B - Synchronous rectification controller and adapter - Google Patents
Synchronous rectification controller and adapter Download PDFInfo
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- CN113179033B CN113179033B CN202110476405.2A CN202110476405A CN113179033B CN 113179033 B CN113179033 B CN 113179033B CN 202110476405 A CN202110476405 A CN 202110476405A CN 113179033 B CN113179033 B CN 113179033B
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 4
- 230000005669 field effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The embodiment of the application relates to the technical field of control and discloses a synchronous rectification controller and an adapter. The synchronous rectification controller of this application is closed by a plurality of chips and is sealed the formation, and synchronous rectification controller includes: the device comprises a voltage limiting module, a current limiting module and a first control module; the voltage limiting module and the current limiting module are arranged on different chips; the voltage limiting module and the first control module are arranged on different chips; the first end of the voltage limiting module is connected with an external power supply circuit, and the second end of the voltage limiting module is connected with the first end of the current limiting module; the second end of the current limiting module is connected with the first end of the external power supply, and the second end of the external power supply is grounded; the first end of the first control module is connected with the second end of the voltage limiting module, and the second end of the first control module is connected with the control end of the external switch tube; the first end of the external switch tube is connected with an external power supply circuit, and the second end of the external switch tube is grounded. The method and the device can reduce the manufacturing cost of the synchronous rectification controller on the basis of ensuring the performance of the original synchronous rectification controller.
Description
Technical Field
The embodiment of the application relates to the technical field of control, in particular to a synchronous rectification controller and an adapter.
Background
In recent years, with the development of various mobile intelligent device technologies such as mobile phones, notebook computers and tablet computers, the requirements of people on the efficiency, power, volume and the like of an adapter are higher and higher, and in practical application, the synchronous rectification technology is applied to the adapter, so that the efficiency of the adapter is improved, the high power density is realized, and the miniaturization is really achieved.
At present, synchronous rectification technology is applied to an adapter and is embodied in a synchronous rectification controller, and the synchronous rectification controller comprises a voltage limiting module, a current limiting module and a control module; the voltage limiting module, the current limiting module and the control module are all arranged in one chip.
However, the voltage limiting module, the current limiting module and the control module are distributed in different layers of the same chip, so that the layers of the structure of the chip are more, the manufacturing process cost of the chip is higher, and the manufacturing cost of the whole chip is increased; and that part of the area of the layers of the chip is not used reasonably resulting in waste of chip layer area.
Disclosure of Invention
An objective of the embodiments of the present application is to provide a synchronous rectification controller and an adapter, so that the manufacturing cost of the synchronous rectification controller is reduced.
To solve the above technical problem, an embodiment of the present application provides a synchronous rectification controller, which is formed by sealing a plurality of chips, and includes: the device comprises a voltage limiting module, a current limiting module and a first control module; the voltage limiting module and the current limiting module are arranged on different chips; the voltage limiting module and the first control module are arranged on different chips; the first end of the voltage limiting module is connected with an external power supply circuit, and the second end of the voltage limiting module is connected with the first end of the current limiting module; the second end of the current limiting module is connected with the first end of an external power supply, and the second end of the external power supply is grounded; the first end of the first control module is connected with the second end of the voltage limiting module, and the second end of the first control module is connected with the control end of the external switch tube; the first end of the external switching tube is connected with the external power supply circuit, and the second end of the external switching tube is grounded; the first control module is used for controlling the external switch tube to be turned off when the voltage at the second end of the voltage limiting module is positive, and controlling the external switch tube to be turned on when the voltage at the second end of the voltage limiting module is negative.
Embodiments of the present application also provide an adapter comprising: the synchronous rectification controller.
According to the embodiment of the application, the voltage limiting module and the current limiting module are arranged on different chips, and the voltage limiting module and the first control module are arranged on different chips, so that the voltage limiting module is arranged in one independent chip in a separated mode, the chip with a plurality of modules is separated into a plurality of chips, the number of layers of each separated chip can be reduced due to the fact that the voltage limiting module is arranged in different layers of the same chip with other modules, and the process difficulty of the chip is greatly increased along with the increase of the number of the layers, that is, the process cost of the layers of the chips with all the modules is greatly higher than that of the separated chips, and therefore, the process cost of the separated chips adopted by the application is greatly reduced relative to that of the chips with all the modules, and even if the sum of the process cost of the separated chips is far lower than that of the chips with all the modules in the related technology; the problem of waste of the area of the chip layer caused by arranging the voltage limiting module and other modules on the same chip can be solved, so that the material cost of the chip is reduced; therefore, the embodiment can reduce the manufacturing cost of the synchronous rectification controller on the basis of ensuring the performance of the original synchronous rectification controller.
In addition, the synchronous rectification controller further comprises a second control module and an electronic switch, wherein the electronic switch is arranged between the second end of the current limiting module and the external power supply, the first end of the second control module is connected with the external power supply, and the second end of the second control module is connected with the control end of the electronic switch;
the second control module is used for controlling the electronic switch to be turned off when the output voltage of the external power supply is smaller than a first preset voltage value, and controlling the electronic switch to be turned on when the output voltage of the external power supply is larger than a second preset voltage value; the first preset voltage value is smaller than the second preset voltage value.
In addition, the second control module, the electronic switch and the current limiting module are arranged on the same chip.
In addition, the current limiting module and the first control module are arranged on the same chip.
In addition, the voltage limiting module is a transistor.
In addition, the transistor is a junction field effect transistor.
In addition, the first control module and the second control module are integrated together.
In addition, the current limiting module is a current source.
In addition, the pressure limiting module is manufactured through an ultra-high pressure process, and the current limiting module and the first control module are manufactured through a high pressure process.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
FIG. 1 is a schematic circuit diagram of a synchronous rectification controller according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of a related art chip;
figure 3 is a schematic cross-sectional view of a discrete chip according to an embodiment of the present application,
FIG. 4 is a schematic circuit diagram of a synchronous rectification controller according to another embodiment of the present application;
fig. 5 is a schematic circuit diagram of a synchronous rectification controller according to another embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, as will be appreciated by those of ordinary skill in the art, in the various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments may be mutually combined and referred to without contradiction.
An embodiment of the present application relates to a synchronous rectification controller, which is formed by sealing a plurality of chips; the schematic circuit of the synchronous rectification controller of this embodiment is shown in fig. 1, and the synchronous rectification controller includes: a voltage limiting module 101, a current limiting module 102, a first control module 103; specifically, the voltage limiting module 101 and the current limiting module 102 are disposed on different chips; the voltage limiting module 101 and the first control module 103 are disposed on different chips.
Specifically, a first end of the voltage limiting module 101 is connected with an external power supply circuit synchronous rectification controller IN, and a second end of the voltage limiting module 101 is connected with a first end of the current limiting module 102; the second end of the current limiting module 102 is connected with the first end of an external power supply, and the second end of the external power supply is grounded; the first end of the first control module is connected with the second end of the voltage limiting module 101, and the second end of the first control module 103 is connected with the control end of the external switch tube; the first end of the external switching tube is connected with an external power supply circuit synchronous rectification controller IN, and the second end of the external switching tube is grounded; the first control module is configured to control the switching tube to be turned off when the voltage at the second end of the voltage limiting module 101 is positive, and control the external switching tube to be turned on when the voltage at the second end of the voltage limiting module 101 is negative.
As shown in fig. 2, the chip 1 is divided into an upper layer 11 and a lower layer 12, and each of the upper layer 11 and the lower layer 12 may include a plurality of layers. It can be seen that, in the related art, the voltage limiting module 101 is disposed on the upper layer 11, the current limiting module 102 and the first control module 103 are disposed on the lower layer 12, and the voltage limiting module 101 and other modules are disposed on different layers of the chip 1, so that the layers of the chip integrating all the modules are more, the process cost is higher, and the voltage limiting module 101 is not overlapped with other modules on the chip, so that the area of each layer of the chip is larger, and the area of part of the layer of the chip is not reasonably used, so that the area of the chip layer is wasted.
As shown in fig. 3, a schematic cross-sectional structure of a discrete chip in this embodiment is shown, the embodiment includes two discrete chips 21 and 22, the current limiting module 102 and the first control module 103 may be in the same chip or in different chips, and the embodiment is not limited specifically. It should be noted that, in fig. 3, the discrete chips 21 and 22 are connected by pins, so as to ensure the connection relationship of the modules in the chips as shown in fig. 1.
In this embodiment, the voltage limiting module 101 and the current limiting module 102 are disposed on different chips, so that the voltage limiting module 101 and the first control module 103 are disposed separately in one independent chip, and thus the chip with multiple integrated modules is separated into multiple chips, since the voltage limiting module 101 and other modules are disposed in different layers of the same chip, the number of layers of each separate chip can be reduced, and the process difficulty of the chip increases greatly with the increase of the number of layers, that is, the process cost of the layers of the chip with all the modules is much higher than that of the separate chip, so that the process cost of the separate chip adopted in this application is greatly reduced relative to that of the chip with all the modules, even if the sum of the process costs of the multiple separate chips is far lower than that of the chip with all the modules in the related technology; the problem of waste of the chip layer area caused by arranging the voltage limiting module 101 and other modules on the same chip can be solved, so that the material cost of the chip is reduced; therefore, the embodiment can reduce the manufacturing cost of the synchronous rectification controller on the basis of ensuring the performance of the original synchronous rectification controller.
IN this embodiment, when the voltage input by the external power supply circuit synchronous rectification controller IN is positive, the voltage limiting module 101 limits the magnitude of the input voltage, even if the voltage input by the external power supply circuit synchronous rectification controller IN is ultrahigh, the voltage output by the second end of the voltage limiting module 101 is low, so as to protect the subsequent connected element from being damaged by ultrahigh, but the voltage output by the second end of the voltage limiting module 101 is still positive; for example, the voltage at the input end VD is 200V, and the source output voltage of the voltage limiting module 101 may be 10V, which is specifically determined according to the selected specification parameters of the voltage limiting module 101. When the voltage output from the second end of the voltage limiting module 101 is negative, the voltage limiting module 101 also reduces the negative pressure and transmits the negative pressure to the first control module 103.
Specifically, the first control module 103 is configured to control the switching tube to be turned off when the voltage output from the second end of the voltage limiting module 101 is positive, and control the external switching tube to be turned on when the voltage output from the second end of the voltage limiting module 101 is negative, so as to control the external switching tube.
It should be noted that, the voltage limiting module 101 does not limit the magnitude of the current flowing in, so the current flowing into the current limiting module 102 is larger, and according to the characteristics of the current limiting module 102, the current limiting module 102 can limit the flowing current within a certain range, so as to limit the charging speed of the external power supply VCC; it should be noted that, too soon charging of the external power supply VCC may result in a larger output voltage of the external power supply VCC, and the external power supply VCC may supply power to other components including the first control module 103, etc., and if the output voltage of the external power supply VCC is larger, the power supply voltage of the components including the first control module 103, etc. may exceed the rated voltage range, resulting in that these components are damaged by larger voltage.
In this embodiment, the external power VCC is a power supply for supplying power to other modules in the adapter, so that stability of the output voltage of the external power VCC may affect the service efficiency of the adapter. Therefore, the embodiment can ensure sufficient electric quantity of the external power supply VCC and ensure voltage stability by supplying power to the external power supply VCC.
However, if the power of the external power supply VCC is full, the external power supply VCC is still continuously supplied with power, which may cause the output voltage of the external power supply VCC to be larger and damage other components, so in an embodiment of the present application, the synchronous rectification controller further includes a second control module and an electronic switch, as shown in fig. 4, which is a schematic circuit diagram of the embodiment, the electronic switch 105 is disposed between the second end of the current limiting module 102 and the external power supply, the first end of the second control module 104 is connected to the external power supply, and the second end of the second control module 104 is connected to the control end of the electronic switch 105; the second control module 104 is configured to control the electronic switch 105 to be turned off when the output voltage of the external power supply is smaller than a first preset voltage value, and control the electronic switch 105 to be turned on when the output voltage of the external power supply is larger than a second preset voltage value; the first preset voltage value is smaller than the second preset voltage value.
That is, in this embodiment, the output voltage of the external power supply VCC needs to be detected, for example, the first preset voltage value is 8.5V, the second preset voltage value is 9V, and when the second control module 104 detects that the voltage of the external power supply VCC is less than 8.5V, the electronic switch 105 is controlled to be turned on, the external power supply VCC is in a charging state, and the voltage of the external power supply VCC continuously rises; when the second control module 104 detects that the voltage of the external power supply VCC is greater than 9V, the electronic switch 105 is controlled to be turned off, the external power supply VCC stops supplying power to charge, the output voltage of the external power supply VCC gradually decreases, and when the second control module 104 detects that the voltage of the external power supply VCC is smaller than 8.5V again, the electronic switch 105 is controlled to be turned on again, and the external power supply VCC is in a charging state. In this embodiment, the voltage of the external power VCC can be stabilized within a fixed range by using the power supply method, so that the output voltage of the external power VCC is stabilized.
In one embodiment, the first control module 103 and the second control module 104 are integrated together.
In one embodiment, the second control module 104, the electronic switch 105 and the current limiting module 102 are provided on the same chip. Because the chip layers of the second control module 104, the electronic switch 105 and the current limiting module 102 are the same, and the second control module 104, the electronic switch 105 and the current limiting module 102 are tightly connected with each other in a working manner, and the connection relationship is complex, the second control module 104 and the electronic switch 105 are arranged in the same chip, so that the process cost for manufacturing the chip is saved on one hand, and the complexity of connection between different chips is reduced on the other hand.
In one embodiment, the current limiting module 102 is provided on the same chip as the first control module 103. That is, the synchronous rectification controller of the present embodiment is formed by sealing two chips, the voltage limiting module 101 is disposed in one chip, the current limiting module 102 and the first control module 103 are disposed in another chip, and since the chip layers of the current limiting module 102 and the first control module 103 are substantially the same, the current limiting module 102 and the first control module 103 are disposed on the same chip, compared with the case that the current limiting module 102 and the first control module 103 are disposed separately, the steps for fabricating the chips are reduced, which is more beneficial to saving the process cost.
In one embodiment, the transistor M1 is a junction field effect transistor.
In one embodiment, the current limiting module 102 is a current source. By setting the current source, the current input to the external power VCC can be limited, and in other embodiments, the current limiting module 102 can be a current limiting resistor.
In one embodiment, the voltage limiting module 101 is on a first chip, and the current limiting module 102 and the first control module 103 are on a second chip; the voltage limiting module 101 is manufactured by an ultra high pressure (Ultra High Voltage, UHV) process, for example, a 200V ultra high pressure process, and the current limiting module 102 and the first control module 103 are manufactured by a high pressure process, for example, a 24V process.
An embodiment of the present application relates to an adapter including the synchronous rectification controller in the above embodiment.
According to the embodiment, the synchronous rectification controller is used, so that the manufacturing cost of the adapter is reduced on the basis of ensuring the performance of the original adapter.
The above division of the components of the various embodiments is for clarity of description, and it is within the scope of protection of the present patent to combine the components into one component or split some components when they are implemented, so long as they include the same logic relationship.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments in which the present application is implemented and that various changes in form and details may be made therein without departing from the spirit and scope of the present application.
Claims (10)
1. A synchronous rectification controller, wherein the synchronous rectification controller is formed by a plurality of chips in a sealing way, the synchronous rectification controller comprising: the device comprises a voltage limiting module, a current limiting module and a first control module; the voltage limiting module and the current limiting module are arranged on different chips; the voltage limiting module and the first control module are arranged on different chips;
the first end of the voltage limiting module is connected with an external power supply circuit, and the second end of the voltage limiting module is connected with the first end of the current limiting module; the second end of the current limiting module is connected with the first end of an external power supply, and the second end of the external power supply is grounded;
the first end of the first control module is connected with the second end of the voltage limiting module, and the second end of the first control module is connected with the control end of the external switch tube; the first end of the external switching tube is connected with the external power supply circuit, and the second end of the external switching tube is grounded;
the first control module is used for controlling the external switch tube to be turned off when the voltage at the second end of the voltage limiting module is positive, and controlling the external switch tube to be turned on when the voltage at the second end of the voltage limiting module is negative.
2. The synchronous rectification controller of claim 1, further comprising a second control module, an electronic switch, the electronic switch being disposed between a second end of the current limiting module and the external power source, a first end of the second control module being connected to the external power source, a second end of the second control module being connected to a control end of the electronic switch;
the second control module is used for controlling the electronic switch to be turned on when the output voltage of the external power supply is smaller than a first preset voltage value, and controlling the electronic switch to be turned off when the output voltage of the external power supply is larger than a second preset voltage value; the first preset voltage value is smaller than the second preset voltage value.
3. The synchronous rectification controller of claim 2, wherein said second control module, said electronic switch and said current limiting module are disposed on a same chip.
4. The synchronous rectification controller of claim 1, wherein said current limiting module is disposed on the same chip as said first control module.
5. The synchronous rectification controller of claim 1, wherein said voltage limiting module is a transistor.
6. The synchronous rectification controller of claim 5, wherein said transistors are junction field effect transistors.
7. The synchronous rectification controller of claim 3, wherein said first control module and said second control module are integrated together.
8. The synchronous rectification controller of claim 1, wherein said current limiting module is a current source.
9. The synchronous rectification controller of claim 4, wherein said voltage limiting module is fabricated by an ultra-high pressure process and said current limiting module and said first control module are fabricated by a high pressure process.
10. An adapter, comprising: the synchronous rectification controller of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476405.2A CN113179033B (en) | 2021-04-29 | 2021-04-29 | Synchronous rectification controller and adapter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476405.2A CN113179033B (en) | 2021-04-29 | 2021-04-29 | Synchronous rectification controller and adapter |
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| Publication Number | Publication Date |
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| CN113179033A CN113179033A (en) | 2021-07-27 |
| CN113179033B true CN113179033B (en) | 2024-03-29 |
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| EP2887521A1 (en) * | 2013-12-23 | 2015-06-24 | Nxp B.V. | Switched mode power supplies and controllers, and a method of controlling a switched mode power supply |
| CN107425732A (en) * | 2017-09-12 | 2017-12-01 | 广州金升阳科技有限公司 | A kind of synchronous rectifier opens control method and circuit |
| CN108429322A (en) * | 2018-05-15 | 2018-08-21 | 深圳市创芯技术有限公司 | A kind of conversion method of high efficiency smart charger and the charger translation-protocol |
| CN110429833A (en) * | 2019-08-13 | 2019-11-08 | 纽福克斯光电科技（上海）有限公司 | A kind of circuit of synchronous rectification of charger |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6597210B2 (en) * | 2001-10-03 | 2003-07-22 | Bruce W. Carsten | Apparatus and method for control and driving BJT used as controlled rectifier |
| US9178411B2 (en) * | 2013-01-22 | 2015-11-03 | Power Integrations, Inc. | Charging circuit for a power converter controller |
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2021
- 2021-04-29 CN CN202110476405.2A patent/CN113179033B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2887521A1 (en) * | 2013-12-23 | 2015-06-24 | Nxp B.V. | Switched mode power supplies and controllers, and a method of controlling a switched mode power supply |
| CN107425732A (en) * | 2017-09-12 | 2017-12-01 | 广州金升阳科技有限公司 | A kind of synchronous rectifier opens control method and circuit |
| CN108429322A (en) * | 2018-05-15 | 2018-08-21 | 深圳市创芯技术有限公司 | A kind of conversion method of high efficiency smart charger and the charger translation-protocol |
| CN110429833A (en) * | 2019-08-13 | 2019-11-08 | 纽福克斯光电科技（上海）有限公司 | A kind of circuit of synchronous rectification of charger |
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