CN115407819A - Voltage regulating circuit, operation method thereof and chip - Google Patents
Voltage regulating circuit, operation method thereof and chip Download PDFInfo
- Publication number
- CN115407819A CN115407819A CN202211191906.7A CN202211191906A CN115407819A CN 115407819 A CN115407819 A CN 115407819A CN 202211191906 A CN202211191906 A CN 202211191906A CN 115407819 A CN115407819 A CN 115407819A
- Authority
- CN
- China
- Prior art keywords
- circuit
- state
- voltage
- branch
- regulated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The present disclosure provides a voltage regulating circuit, an operating method thereof, and a chip, and relates to the field of electronic technology, the voltage regulating circuit includes: an output configured to be connected with a circuit to be regulated; an input configured to be connected to a supply voltage terminal providing a supply voltage to the circuit to be regulated; and a first regulating circuit comprising: a first branch comprising a first resistor, and a second branch in parallel with the first branch configured to switch from an off state to an on state, wherein a resistance of the first regulation circuit when the second branch is in the on state is less than a resistance of the second branch when the second branch is in the off state.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a voltage regulator circuit, an operating method thereof, and a chip.
Background
During the design process of an integrated circuit, it is desirable that the integrated circuit operates normally at a preset supply voltage. However, during the fabrication of integrated circuits, parameters of various components (e.g., resistance, turn-on voltage, channel length, etc.) may fluctuate. This can cause a deviation between the supply voltage required for proper operation of the integrated circuit and the effective supply voltage actually provided to the integrated circuit, resulting in the integrated circuit failing to operate properly.
In the related art, in order to solve this problem, a voltage regulating circuit is connected in series between a supply voltage terminal that supplies a supply voltage and an integrated circuit (hereinafter referred to as a circuit to be regulated). By controlling the resistance of the voltage regulating circuit, no deviation exists between the effective supply voltage provided to the circuit to be regulated and the supply voltage required by the circuit to be regulated, so that the circuit to be regulated works normally.
The resistance of the control voltage regulating circuit is minimal if there is no deviation between the supply voltage required by the circuit to be regulated and the effective supply voltage supplied to the circuit to be regulated.
If the effective supply voltage required by the circuit to be regulated is less than the effective supply voltage provided to the circuit to be regulated, the resistance of the voltage regulating circuit is controlled to increase, thereby reducing the effective supply voltage provided to the circuit to be regulated.
Disclosure of Invention
The inventors have noted that, in practice, in some cases, after the voltage regulating circuit of the related art is utilized, the circuit to be regulated still cannot operate normally.
The inventors have discovered through analysis, for example, that in some cases, the supply voltage required by some circuits to be regulated after manufacture may be greater than the effective supply voltage provided to the circuits to be regulated, rather than less than the effective supply voltage provided to the circuits to be regulated; for another example, in other cases, the resistance of the voltage regulating circuit may undesirably increase during manufacturing due to malfunction.
However, since the resistance of the voltage regulating circuit of the related art can only be controlled to increase and cannot be controlled to decrease, the circuit to be regulated cannot operate normally.
In view of this, the embodiments of the present disclosure propose solutions that enable an increase in the effective supply voltage provided to the circuit to be regulated.
According to an aspect of the embodiments of the present disclosure, there is provided a voltage regulating circuit including: an output configured to be connected with a circuit to be regulated; an input configured to be connected to a supply voltage terminal providing a supply voltage to the circuit to be regulated; and a first regulating circuit comprising: a first branch comprising a first resistor, and a second branch in parallel with the first branch configured to switch from an off-state to an on-state, wherein a resistance of the first regulation circuit in the second branch in the on-state is less than a resistance of the second branch in the off-state.
In some embodiments, the voltage regulation circuit further comprises: a control voltage terminal; the second branch circuit comprises a first element connected with the control voltage terminal, and the first element is configured to be switched from an off state to an on state under the control of the voltage of the control voltage terminal, so that the second branch circuit is switched from the off state to the on state.
In some embodiments, the first branch further comprises a first fuse in series with the first resistor.
In some embodiments, the second branch is configured to switch from an off-state to an on-state only.
In some embodiments, the first element is configured to be broken down to switch from an off-state to an on-state under control of a voltage of the control voltage terminal.
In some embodiments, the second branch further comprises a second resistor in series with the first element; the voltage regulation circuit further includes: a second regulating circuit, connected in parallel with the first regulating circuit, comprising one or a plurality of third branches connected in parallel, each third branch comprising a second fuse and a third resistor connected in series.
In some embodiments, the first element is a capacitor or a diode.
In some embodiments, the first element is a switching transistor.
In some embodiments, the voltage regulation circuit further comprises: a third regulating circuit, connected in series with the first regulating circuit, comprising a plurality of fourth branches connected in parallel, each fourth branch comprising a third fuse and a fourth resistor connected in series.
In some embodiments, the third regulating-circuit is connected between the first regulating-circuit and the circuit to be regulated.
According to another aspect of the embodiments of the present disclosure, there is provided a chip including: the voltage regulation circuit of any of the above embodiments; the circuit to be regulated is connected with the output end; and the power supply voltage end is connected with the input end.
In some embodiments, the second branch is in a conducting state.
In some embodiments, the first branch further comprises a first fuse in series with the first resistor.
In some embodiments, the first fuse is in a conductive state.
In some embodiments, the first fuse is in an open state.
According to another aspect of the embodiments of the present disclosure, there is provided a method of operating a voltage regulating circuit according to any one of the above embodiments, including: and controlling the second branch circuit to be switched from the off state to the on state.
In some embodiments, the voltage regulation circuit further comprises a control voltage terminal, the second branch comprising a first element connected to the control voltage terminal; controlling the second branch to switch from the off-state to the on-state comprises: and controlling the voltage of the control voltage end to control the first element to be switched from an off state to an on state.
In some embodiments, the second branch is configured to switch from an off state to an on state only; controlling the voltage of the control voltage terminal to control the first element to switch from the off-state to the on-state comprises: and controlling the voltage of the power supply voltage end to be a first voltage, and controlling the voltage of the control voltage end to be a second voltage so as to break down the first element.
In some embodiments, the second voltage is less than or equal to the supply voltage.
In some embodiments, the first voltage is greater than the supply voltage and the second voltage is greater than or equal to 0V.
In some embodiments, the second voltage is equal to 0V.
In some embodiments, the second branch further comprises a second resistor in series with the first element, the voltage regulation circuit further comprises a second regulation circuit in parallel with the first regulation circuit, the second regulation circuit comprising one or more third branches in parallel, each third branch comprising a second fuse and a third resistor in series; wherein the first voltage is equal to 0V and the second voltage is less than 0V.
In some embodiments, the first branch further comprises a first fuse in series with the first resistor; the method further comprises the following steps: and before controlling the second branch circuit to be switched from the off state to the on state, controlling the first fuse to be switched from the on state to the off state.
In the embodiment of the disclosure, the first adjusting circuit connected between the circuit to be adjusted and the power supply voltage end comprises a first branch circuit and a second branch circuit which are connected in parallel, and the second branch circuit can be switched from an off state to an on state, so that the resistance of the first adjusting circuit is reduced. In this way, even if the supply voltage required by the circuit to be regulated is greater than the effective supply voltage provided to the circuit to be regulated, the resistance of the first regulating circuit can be reduced by controlling the second branch circuit to be switched from the off state to the on state, so that the effective supply voltage provided to the circuit to be regulated is increased to the supply voltage required by the circuit to be regulated, and the circuit to be regulated works normally. Thus, the reliability of the circuit to be regulated is improved.
The technical solution of the present disclosure is further described in detail by the accompanying drawings and examples.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic block diagram of a voltage regulation circuit according to some embodiments of the present disclosure;
FIG. 2 is a schematic diagram of a voltage regulation circuit according to further embodiments of the present disclosure;
FIG. 3 is a schematic block diagram of a voltage regulation circuit according to further embodiments of the present disclosure;
FIGS. 4A and 4B are schematic diagrams of voltage regulation circuits according to further embodiments of the present disclosure;
FIGS. 5A and 5B are schematic structural diagrams of voltage regulation circuits according to still further embodiments of the present disclosure;
fig. 6A and 6B are schematic structural diagrams of voltage regulation circuits according to still further embodiments of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be intervening components between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without having an intervening component, or may be directly connected to the other components without having an intervening component.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
Fig. 1 is a schematic diagram of a voltage regulation circuit according to some embodiments of the present disclosure.
As shown in fig. 1, the voltage regulating circuit 100 includes an input terminal 110 and an output terminal 120. The output 120 is configured to be connected to a circuit to be regulated 200. The input terminal 110 is configured to be connected to a supply voltage terminal Vcc that provides a supply voltage to the circuit to be regulated 200. For example, the circuit to be regulated 200 is an integrated circuit in a chip, and the supply voltage terminal Vcc is a Vcc terminal of the chip.
The voltage regulating circuit 100 further includes a first regulating circuit 130. First conditioning circuit 130 includes a first leg 1310 and a second leg 1320 in parallel. The first branch 1310 includes a first resistor 1311. The second leg 1320 is configured to switch from an off state to an on state, i.e., the second leg 1320 is capable of switching from an off state to an on state.
Here, the resistance of the first adjusting circuit 130 in the on state of the second branch 1320 is smaller than the resistance of the second branch 1320 in the off state.
Assume that the second leg 1320 is first in the open state. During this time, the resistance of the first adjusting circuit 130 is equal to the resistance of the first branch 1310, for example, equal to the resistance of the first resistor 1311. Thereafter, the second branch 1320 is switched from the off state to the on state, and the resistance of the first adjusting circuit 130 decreases.
For example, if the supply voltage required by the circuit to be regulated 200 is equal to the effective supply voltage provided to the circuit to be regulated 200, i.e. there is no deviation between the required supply voltage and the effective supply voltage, the second branch 1320 is controlled to be in the open state.
For another example, if the supply voltage required by the circuit to be regulated 200 is greater than the effective supply voltage provided to the circuit to be regulated 200, the second branch 1320 is controlled to switch from the off state to the on state to reduce the resistance of the first regulating circuit 130, so that the effective supply voltage provided to the circuit to be regulated 200 is increased to the supply voltage required by the circuit to be regulated 200, and the circuit to be regulated 200 can operate normally.
In the above embodiment, the first adjusting circuit 130 connected between the circuit to be adjusted 200 and the power supply voltage terminal Vcc includes the first branch 1310 and the second branch 1320 connected in parallel, and the second branch 1320 can be switched from the off state to the on state, so that the resistance of the first adjusting circuit 130 is reduced. In this manner, even if the supply voltage required by the circuit to be regulated 200 is greater than the effective supply voltage provided to the circuit to be regulated 200, the resistance of the first regulating circuit 130 can be reduced by controlling the second branch 1320 to switch from the off state to the on state, so that the effective supply voltage provided to the circuit to be regulated 200 is increased to the supply voltage required by the circuit to be regulated 200, and the circuit to be regulated 200 operates normally. In this way, the reliability of the circuit to be regulated 200 is improved.
It should be understood that the voltage regulation circuit 100 is only schematically illustrated in fig. 1 as including one first regulation circuit 130. In practice, the voltage regulating circuit 100 may include a plurality of first regulating circuits 130 connected in series to more flexibly regulate the effective supply voltage provided to the circuit to be regulated 200.
The first branch 1310 is described below in connection with some embodiments.
In some embodiments, first branch 1310 is in a conducting state. In other embodiments, first branch 1310 may be switched from an on state to an off state.
As some implementations, the first branch 1310 also includes a first fuse 1312 in series with a first resistor 1311. With the first fuse 1312 in a conductive state (i.e., the fuse is not blown), the first branch 1310 is in a conductive state. The first branch 1310 may be switched from the on state to the off state by controlling the first fuse 1312 to be switched from the on state to the off state (i.e., the fuse is blown).
FIG. 2 is a schematic diagram of a voltage regulation circuit according to further embodiments of the present disclosure.
Referring to fig. 2, the voltage regulating circuit 100 further includes a control voltage terminal 140. The second branch 1320 includes a first element 1321 coupled to the control voltage terminal 140. The first element 1321 is configured to switch from the off-state to the on-state under control of the voltage of the control voltage terminal 140 such that the second branch 1320 switches from the off-state to the on-state.
Thus, the first element 1321 can be conveniently controlled to switch from the off state to the on state by adjusting the voltage of the control voltage terminal 140, so as to control the second branch 1320 to switch from the off state to the on state.
The first element 1321 is described below in connection with some embodiments.
In some embodiments, the first element 1321 is configured to switch from an off state to an on state and from an on state to an off state. That is, the first element 1321 can be switched from the off state to the on state and also can be switched from the on state back to the off state.
In this manner, the resistance of the first adjusting circuit 130 can be adjusted more flexibly, and the effective supply voltage provided to the circuit to be adjusted 200 can be adjusted more flexibly. For example, even if the resistance of the first adjusting circuit 130 increases (decreases) due to an erroneous operation in the manufacturing process, the resistance of the first adjusting circuit 130 can be decreased (increased) by controlling the state of the first element 1321, thereby returning to the state before the erroneous operation.
For example, the first element 1321 is a switching transistor. The switch Transistor may be a Metal Oxide Semiconductor Field Effect Transistor (MOSFET), and a gate of the MOSFET is connected to the control voltage terminal 140. The MOSFET may be an N-type MOSFET or a P-type MOSFET.
This is explained below with reference to fig. 3. FIG. 3 is a schematic diagram of a voltage regulation circuit, according to further embodiments of the present disclosure.
As shown in fig. 3, the first element 1321 is a MOSFET. In this case, the first branch 1310 may include only the first resistor 1311.
For example, if the supply voltage required by the circuit to be regulated 200 is not greater than the effective supply voltage provided to the circuit to be regulated 200, the voltage of the control voltage terminal 140 is adjusted to control the MOSFETs in the off state. At this time, the resistance of the first adjusting circuit 130 is equal to the resistance of the first branch 1310, for example, equal to the resistance of the first resistor 1311.
For another example, if the supply voltage required by the circuit to be regulated 200 is greater than the effective supply voltage provided to the circuit to be regulated 200, the voltage of the control voltage terminal 140 is adjusted to control the MOSFET to switch to the on state. At this time, the resistance of the first adjusting circuit 130 is equal to the total resistance of the first branch 1310 and the second branch 1320 in parallel, which is smaller than the resistance of the first branch 1310. Thus, the resistance of the first adjusting circuit 130 can be reduced, and the effective supply voltage provided to the circuit to be adjusted 200 can be increased, so that the circuit to be adjusted 200 can work normally.
In other embodiments, the first element 1321 is configured to only switch from the off-state to the on-state. That is, the first element 1321 can only be switched from the off state to the on state, and cannot be switched back from the off state to the on state.
Thus, the first element 1321 can be switched from the off-state to the on-state and maintained in the on-state by applying a voltage once at the control voltage terminal 140, and then no additional voltage is applied at the control voltage terminal 140 all the time.
As some implementations, the first element 1321 is configured to be broken down to switch from the off-state to the on-state under control of the voltage of the control voltage terminal 140.
For example, the first element 1321 is a capacitor, one end of which is connected to the control voltage terminal 140 and the other end of which is connected to the input terminal 110. Normally, i.e. in case the voltage at the input terminal 110 is the voltage at the supply voltage terminal Vcc, and no voltage is applied at the control voltage terminal 140, the capacitor is in an off-state in the dc circuit. The capacitor may be broken down by adjusting the voltage at the control voltage terminal 140, thereby switching the capacitor from an off state to an on state and maintaining the capacitor in the on state.
Also for example, the first element 1321 is a diode, and the anode of the diode is connected to the control voltage terminal 140 and the cathode of the diode is connected to the input terminal 110. Normally, the diode is turned off in the reverse direction, and thus is in an off state. The diode may be broken down by adjusting the voltage at the control voltage terminal 140, thereby switching the diode from the off-state to the on-state and maintaining the diode in the on-state.
This is explained below with reference to fig. 4A and 4B. Fig. 4A and 4B are schematic structural diagrams of voltage regulation circuits according to further embodiments of the present disclosure.
In fig. 4A, the first element 1321 is a diode. In fig. 4B, the first element 1321 is a capacitor. In these cases, the first branch 1310 may include a first resistor 1311 and a first fuse 1312 in series.
For example, if the supply voltage required by the circuit to be regulated 200 is not greater than the effective supply voltage provided to the circuit to be regulated 200, the first fuse 1312 is in a conductive state, i.e., the first branch 1310 is in a conductive state. During this time, the voltage difference across the diode or capacitor is equal to the voltage drop across the first leg 1310, which is insufficient to break down the diode or capacitor, and the second leg 1320 is in an open state. At this time, the resistance of the first adjusting circuit 130 is equal to the resistance of the first branch 1310.
For another example, if the supply voltage required by the circuit to be regulated 200 is greater than the effective supply voltage provided to the circuit to be regulated 200, the first fuse 1312 may first be controlled to switch from the on state to the off state, i.e., the first fuse 1312 is blown. Then, the voltage of the power supply voltage terminal Vcc is controlled to be a first voltage, and the voltage of the control voltage terminal 140 is controlled to be a second voltage, so as to break down the diode or the capacitor, such that the second branch 1320 is switched from the off state to the on state. As such, the resistance of the first conditioning circuit 130 decreases from the resistance of the first leg 1310 to the resistance of the second leg 1320.
In the above embodiments, the voltage regulating circuit 100 includes the first regulating circuit 130 with a reduced resistance, so that when the supply voltage required by the circuit to be regulated 200 is greater than the effective supply voltage provided to the circuit to be regulated 200, the effective supply voltage provided to the circuit to be regulated 200 can be increased to the supply voltage required by the circuit to be regulated 200, so that the circuit to be regulated 200 can operate normally.
In some embodiments, voltage regulation circuit 100 includes other regulation circuits in addition to first regulation circuit 130. The following description will be made with reference to fig. 5A to 5B and fig. 6A to 6B.
Fig. 5A and 5B are schematic structural diagrams of voltage regulation circuits according to further embodiments of the present disclosure.
As shown in fig. 5A and 5B, the voltage regulating circuit 100 further includes a third regulating circuit 160 connected in series with the first regulating circuit 130.
The third conditioning circuit 160 includes a plurality of fourth branches 1610 connected in parallel. Each fourth branch 1610 includes a fourth resistor 1611 and a third fuse 1612 connected in series. The third conditioning circuit 160 is schematically shown in fig. 5A and 5B to include 3 fourth branches 1610.
For example, if the supply voltage required by the circuit to be regulated 200 is not less than the effective supply voltage provided to the circuit to be regulated 200, the third fuse 1612 of each fourth branch 1610 is in a conductive state.
For another example, if the supply voltage required by the circuit to be regulated 200 is less than the effective supply voltage provided to the circuit to be regulated 200, the third fuse 1612 in the partial fourth branch 1610 may be controlled to switch to an open state. In this way, the resistance of the third adjusting circuit 160 may be increased, so that the effective supply voltage provided to the circuit to be adjusted 200 is reduced to the supply voltage required by the circuit to be adjusted 200, and the circuit to be adjusted 200 can operate normally.
In the above embodiment, the voltage regulation circuit 100 includes the first regulation circuit 130 whose resistance can be decreased and the third regulation circuit 160 whose resistance can be increased. On the one hand, in the case that the supply voltage required by the circuit to be regulated 200 is greater than the effective supply voltage provided to the circuit to be regulated 200, controlling the resistance of the first regulating circuit 130 to decrease increases the effective supply voltage provided to the circuit to be regulated 200. On the other hand, in the case where the supply voltage required by the circuit to be regulated 200 is less than the effective supply voltage provided to the circuit to be regulated 200, controlling the resistance of the third regulating circuit 160 to increase may reduce the effective supply voltage provided to the circuit to be regulated 200. In this way, whether the supply voltage required by the circuit to be regulated 200 is greater than or less than the effective supply voltage, the effective supply voltage provided to the circuit to be regulated 200 can be adjusted to the supply voltage required by the circuit to be regulated 200 by controlling the voltage regulating circuit 100, thereby further improving the reliability of the circuit to be regulated 200.
It should be understood that the voltage regulating circuit 100 is only schematically illustrated in fig. 5A and 5B as including one first regulating circuit 130 and one third regulating circuit 160 in series. In practice, the voltage regulating circuit 100 may also include a plurality of first regulating circuits 130 and a plurality of third regulating circuits 160 connected in series.
It should also be understood that the third regulating circuit 160 is only schematically shown in fig. 5A and 5B connected between the first regulating circuit 130 and the output terminal 120 (i.e., the circuit to be regulated 200). In practice, the third regulating circuit 160 may also be connected between the input terminal 110 (i.e., the supply voltage terminal Vcc) and the first regulating circuit 130.
In some embodiments, the third conditioning circuit 160 is connected between the first conditioning circuit 130 and the circuit to be conditioned 200. In this manner, it may be more convenient to control the second branch 1320 to switch from the off state to the on state (e.g., break down first element 1321) by controlling the voltage of the supply voltage terminal Vcc and the voltage of the control voltage terminal 140.
In addition, although the voltage regulating circuit 100 shown in fig. 5A and 5B is added with the third regulating circuit 160 on the basis of the voltage regulating circuit 100 shown in fig. 4A and 4B, in some embodiments, the third regulating circuit 160 may also be added on the basis of the voltage regulating circuit 100 shown in fig. 1, 2 or 3.
Fig. 6A and 6B are schematic structural diagrams of voltage regulation circuits according to still further embodiments of the present disclosure.
As shown in fig. 6A and 6B, the second branch 1320 also includes a second resistor 1322 in series with the first element 1321. In this case, the voltage regulating circuit 100 further includes a second regulating circuit 150 connected in parallel with the first regulating circuit 130.
The second conditioning circuit 150 includes one or more third branches 1510 in parallel. Each third branch 1510 includes a third resistor 1511 and a second fuse 1512 in series. The second regulating circuit 150 is schematically shown in fig. 6A and 6B to comprise 2 third branches 1510 in parallel.
Normally, the second fuse 1512 of each third branch 1510 in the second regulating circuit 150 is in a conducting state; the first fuse 1312 in the first branch 1310 of the first conditioning circuit 130 is in a conducting state and the first element 1321 in the second branch 1320 is in an open state. At this time, the total resistance of the first adjusting circuit 130 and the second adjusting circuit 150 is equal to the total resistance of the first branch 1310 in parallel with the second adjusting circuit 150.
For example, if the supply voltage required by the circuit to be regulated 200 is less than the effective supply voltage provided to the circuit to be regulated 200, the third fuse 1612 in the partial fourth branch 1610 may be controlled to switch from a conducting state to an open state, or the first fuse 1312 in the first branch 1310 may be controlled to switch from a conducting state to an open state. In this manner, the total resistance of the first and second regulating circuits 130, 150 may be increased to reduce the effective supply voltage provided to the circuit to be regulated 200.
For another example, if the supply voltage required by the circuit to be regulated 200 is greater than the effective supply voltage provided to the circuit to be regulated 200, the first element 1321 in the second branch 1320 may be controlled to switch from the off state to the on state such that the second resistor 1322 is connected in parallel with the first branch 1310 and the second regulating circuit 150. In this manner, the total resistance of the first and second regulating circuits 130, 150 may be reduced to increase the effective supply voltage provided to the circuit to be regulated 200.
The second resistor 1322 may also function to limit current when the first element 1321 is switched to the on state, protecting the circuit.
In the above embodiment, no matter whether the power supply voltage required by the circuit to be regulated 200 is greater than or less than the effective power supply voltage, the effective power supply voltage provided to the circuit to be regulated 200 can be adjusted to the power supply voltage required by the circuit to be regulated 200 by controlling the voltage regulating circuit 100, so as to further improve the reliability of the circuit to be regulated 200.
Further, in this manner, in addition to reducing the effective supply voltage provided to the circuit to be regulated 200 by controlling the third fuse 1612 in the fourth branch 1610 to switch from the on state to the off state, the effective supply voltage provided to the circuit to be regulated 200 may also be reduced by controlling the first fuse 1312 in the first branch 1310 of the first voltage regulating circuit 130 to switch from the on state to the off state. That is, in this configuration, the first regulating circuit 130 may be used to increase the effective supply voltage provided to the circuit-to-be-regulated 200, or may be used to decrease the effective supply voltage provided to the circuit-to-be-regulated 200. In this manner, the effective supply voltage provided to the circuit to be regulated 200 may be flexibly adjusted with fewer components.
It should be noted that the first element 1321 in the second branch 1320 of the first adjusting circuit 130 shown in fig. 6A and 6B is not limited to a diode or a capacitor, but may be any electronic element that can be broken down to switch from an off state to an on state.
In the above embodiments, the adjusting circuit with increased resistance (e.g., the second adjusting circuit 150 or the third adjusting circuit 160) and the adjusting circuit with decreased resistance (i.e., the first adjusting circuit 130) cooperate with each other to more accurately adjust the effective supply voltage provided to the circuit to be adjusted 200, so as to ensure that the circuit to be adjusted 200 works normally.
For example, a regulation circuit that may increase in resistance may cause an undesirable increase in resistance due to a fuse being accidentally blown. In this case, controlling the resistance of the first adjusting circuit 130 to decrease can counteract the unexpected increase in resistance to ensure that the circuit 200 to be adjusted operates normally.
In addition, since the voltage regulating circuit 100 of the above embodiments can increase the effective supply voltage provided to the circuit to be regulated 200 and can also decrease the effective supply voltage provided to the circuit to be regulated 200, it is possible to increase the design range of the preset supply voltage of the circuit to be regulated 200 in the circuit design process, and improve the flexibility of the circuit design.
The following describes the operation method of the voltage regulating circuit 100 according to various embodiments of the present disclosure.
The method of operating the voltage regulating circuit 100 of various embodiments of the present disclosure includes controlling the second branch 1320 to switch from the off state to the on state.
In some embodiments, referring to fig. 2, voltage regulation circuit 100 further includes a control voltage terminal 140, and second branch 1320 includes a first element 1321 coupled to control voltage terminal 140.
In these embodiments, the voltage of the control voltage terminal 140 is controlled to control the first element 1321 to switch from the off-state to the on-state, thereby controlling the second branch 1320 to switch from the off-state to the on-state. That is, the first element 1321 is switched from the off state to the on state means that the second branch 1320 is switched from the off state to the on state.
In some embodiments, the second leg 1320 is configured to only switch from an off state to an on state. That is, the first element 1321 can only be switched from the off state to the on state.
In this case, the voltage of the power supply voltage terminal Vcc is controlled to be a first voltage, and the voltage of the control voltage terminal 140 is controlled to be a second voltage to break down the first element 1321, so that the voltage of the control voltage terminal 140 is controlled to control the first element 1321 to be switched from the off state to the on state.
In some embodiments, the second voltage of the control voltage terminal 140 is less than or equal to the supply voltage provided by the supply voltage terminal Vcc. It is understood that the supply voltage provided by the supply voltage terminal Vcc can cause the circuit 200 to be regulated to be in a normal operating state.
As some implementations, the first voltage of the supply voltage terminal Vcc is greater than the supply voltage, and the second voltage of the control voltage terminal 140 is greater than or equal to 0V. For example, the second voltage of the supply voltage terminal Vcc is equal to 1/2, 1/3, or 1/4 of the supply voltage and the difference between the first voltage and the second voltage is greater than the breakdown voltage of the first element 1321.
In this way, the voltage supplied to the circuit to be regulated 200 can be prevented from being larger than the supply voltage supplied by the supply voltage terminal Vcc during breakdown of the first element 1321, so that the circuit to be regulated 200 can be protected.
In some embodiments, the second voltage of the control voltage terminal 140 is equal to 0V. In this manner, the circuit to be regulated 200 can be protected more effectively.
In some embodiments, referring to fig. 6A and 6B, second branch 1320 further includes a second resistor 1322 in series with first element 1321, and voltage regulation circuit 100 further includes a second regulation circuit 150 in parallel with first regulation circuit 130. The second regulating circuit 150 comprises one or a plurality of third branches 1510 in parallel, each third branch 1510 comprising a third resistor 1511 and a second fuse 1512 in series.
In these embodiments, the first voltage of the supply voltage terminal Vcc may be controlled to be equal to 0V, and the second voltage of the control voltage terminal 140 may be controlled to be less than 0V to break down the first element 1321. In this way, the voltage supplied to the circuit to be regulated 200 can be prevented from being too large during the breakdown of the first element 1321, so that the circuit to be regulated 200 can be protected.
In some embodiments, referring to fig. 4A and 4B, the first branch 1310 further includes a first fuse 1312 in series with a first resistor 1311. In this case, the method of operating the voltage regulating circuit 100 further includes controlling the first fuse 1312 to switch from the on state to the off state before controlling the second branch 1320 to switch from the off state to the on state.
In this way, the circuit to be regulated 200 can be protected in the process of controlling the second branch 1320 to switch from the off state to the on state.
The embodiment of the present disclosure further provides a chip, which includes the voltage control circuit 100 of any one of the above embodiments, the circuit to be regulated 200 connected to the output terminal 120, and the supply voltage terminal Vcc connected to the input terminal 110.
In some embodiments, the second branch 1320 in the voltage control circuit 100 is in an open state. In other embodiments, the second branch 1320 in the voltage control circuit 100 is in a conducting state. For example, in a chip, the second branch 1320 is in a conducting state without control of an additional voltage.
In some embodiments, the first branch 1310 also includes a first fuse 1312 in series with a first resistor 1311.
In some embodiments, the first fuse 1312 is in a conducting state. In other embodiments, the first fuse 1312 is in an open state.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
In the present specification, the embodiments are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same or similar parts in each embodiment are referred to each other. For the chip and the operation method embodiment, since the chip and the operation method embodiment substantially correspond to the product embodiment, the description is relatively simple, and reference may be made to part of the description of the product embodiment for relevant points.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (23)
1. A voltage regulation circuit, comprising:
an output configured to be connected with a circuit to be regulated;
an input configured to be connected to a supply voltage terminal providing a supply voltage to the circuit to be regulated; and
a first conditioning circuit comprising:
a first branch including a first resistor, an
A second branch, in parallel with the first branch, configured to switch from an off-state to an on-state,
wherein a resistance of the first regulating circuit in a state where the second branch is in an on state is smaller than a resistance of the first regulating circuit in a state where the second branch is in an off state.
2. The circuit of claim 1, further comprising:
a control voltage terminal;
wherein the second branch comprises a first element connected to the control voltage terminal, the first element being configured to switch from an off-state to an on-state under control of a voltage of the control voltage terminal, such that the second branch switches from the off-state to the on-state.
3. The circuit of claim 2, wherein the first branch further comprises a first fuse in series with the first resistor.
4. The circuit of claim 3, wherein the second branch is configured to switch only from an off state to an on state.
5. The circuit of claim 4, wherein the first element is configured to be broken down to switch from an off state to an on state under control of a voltage of the control voltage terminal.
6. The circuit of claim 5, wherein the second branch further comprises a second resistor in series with the first element;
the voltage regulation circuit further includes:
and the second regulating circuit is connected with the first regulating circuit in parallel and comprises one or a plurality of third branches connected in parallel, and each third branch comprises a second fuse and a third resistor which are connected in series.
7. The circuit of claim 5, wherein the first element is a capacitor or a diode.
8. The circuit of claim 2, wherein the first element is a switching transistor.
9. The circuit of any of claims 1-8, further comprising:
a third regulating circuit, connected in series with the first regulating circuit, comprising a plurality of fourth branches connected in parallel, each fourth branch comprising a third fuse and a fourth resistor connected in series.
10. The circuit of claim 9, wherein the third regulation circuit is connected between the first regulation circuit and the circuit to be regulated.
11. A chip, comprising:
the voltage regulation circuit of any one of claims 1-10;
the circuit to be regulated is connected with the output end; and
and the power supply voltage end is connected with the input end.
12. The chip of claim 11, in which the second branch is in a conducting state.
13. The chip of claim 12, wherein the first branch further comprises a first fuse in series with the first resistor.
14. The chip of claim 13, wherein the first fuse is in a conductive state.
15. The chip of claim 13, wherein the first fuse is in an open state.
16. A method of operating a voltage regulation circuit according to any one of claims 1 to 10, comprising:
and controlling the second branch circuit to be switched from the off state to the on state.
17. The method of claim 16, wherein the voltage regulation circuit further comprises a control voltage terminal, the second branch comprising a first element connected to the control voltage terminal;
controlling the second branch to switch from the off-state to the on-state comprises:
and controlling the voltage of the control voltage end to control the first element to be switched from an off state to an on state.
18. The method of claim 17, wherein the second leg is configured to switch from an off state to an on state only;
controlling the voltage of the control voltage terminal to control the first element to switch from the off-state to the on-state comprises:
and controlling the voltage of the power supply voltage end to be a first voltage, and controlling the voltage of the control voltage end to be a second voltage so as to break down the first element.
19. The method of claim 18, wherein the second voltage is less than or equal to the supply voltage.
20. The method of claim 19, wherein the first voltage is greater than the supply voltage and the second voltage is greater than or equal to 0V.
21. The method of claim 20, wherein the second voltage is equal to 0V.
22. The method of claim 18, wherein the second branch further comprises a second resistor in series with the first element, the voltage regulation circuit further comprises a second regulation circuit in parallel with the first regulation circuit, the second regulation circuit comprising one or more third branches in parallel, each third branch comprising a second fuse and a third resistor in series;
wherein the first voltage is equal to 0V and the second voltage is less than 0V.
23. The method of any of claims 16-22, wherein the first branch further comprises a first fuse in series with the first resistor;
the method further comprises the following steps:
and before the second branch circuit is controlled to be switched from the off state to the on state, the first fuse is controlled to be switched from the on state to the off state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211191906.7A CN115407819A (en) | 2022-09-28 | 2022-09-28 | Voltage regulating circuit, operation method thereof and chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211191906.7A CN115407819A (en) | 2022-09-28 | 2022-09-28 | Voltage regulating circuit, operation method thereof and chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115407819A true CN115407819A (en) | 2022-11-29 |
Family
ID=84167548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211191906.7A Pending CN115407819A (en) | 2022-09-28 | 2022-09-28 | Voltage regulating circuit, operation method thereof and chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115407819A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020003447A1 (en) * | 2000-07-04 | 2002-01-10 | Fujitsu Limited | Trimming circuit of semiconductor integrated device |
| TW200837523A (en) * | 2007-03-06 | 2008-09-16 | Neotec Semiconductor Ltd | Circuit for adjusting reference voltage using fuse trimming |
| CN101322088A (en) * | 2006-03-03 | 2008-12-10 | 株式会社理光 | Voltage divider, constant voltage circuit using same, and trimming method in the voltage divider circuit |
| CN101498948A (en) * | 2008-02-01 | 2009-08-05 | 瑞昱半导体股份有限公司 | Regulating circuit and its correlated regulating method |
| US20100295522A1 (en) * | 2009-05-21 | 2010-11-25 | Chang-Ju Lee | Semiconductor device having voltage regulator |
| JP2013251535A (en) * | 2012-05-02 | 2013-12-12 | Semiconductor Energy Lab Co Ltd | Trimming resistor, reference voltage generating circuit and reference current generating circuit |
| CN206058021U (en) * | 2016-09-29 | 2017-03-29 | 西安微电子技术研究所 | A kind of Flouride-resistani acid phesphatase second order compensation high accuracy, Low Drift Temperature band gap reference voltage source circuit |
| CN106557105A (en) * | 2015-09-25 | 2017-04-05 | 鸿富锦精密工业（深圳）有限公司 | Voltage regulator circuit |
| CN106708155A (en) * | 2016-11-22 | 2017-05-24 | 成都芯源系统有限公司 | Integrated circuit and circuit characteristic adjusting method thereof |
| US20190155323A1 (en) * | 2017-11-17 | 2019-05-23 | Samsung Electronics Co., Ltd. | Reference voltage generating circuit method of generating reference voltage and integrated circuit including the same |
| US20210280515A1 (en) * | 2019-05-23 | 2021-09-09 | Fuji Electric Co., Ltd. | Trimming circuit and trimming method |
| CN114637354A (en) * | 2022-03-28 | 2022-06-17 | 杭州红芯微电子信息科技有限公司 | Trimming circuit for operational amplifier circuit |
-
2022
- 2022-09-28 CN CN202211191906.7A patent/CN115407819A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020003447A1 (en) * | 2000-07-04 | 2002-01-10 | Fujitsu Limited | Trimming circuit of semiconductor integrated device |
| CN101322088A (en) * | 2006-03-03 | 2008-12-10 | 株式会社理光 | Voltage divider, constant voltage circuit using same, and trimming method in the voltage divider circuit |
| TW200837523A (en) * | 2007-03-06 | 2008-09-16 | Neotec Semiconductor Ltd | Circuit for adjusting reference voltage using fuse trimming |
| CN101498948A (en) * | 2008-02-01 | 2009-08-05 | 瑞昱半导体股份有限公司 | Regulating circuit and its correlated regulating method |
| US20100295522A1 (en) * | 2009-05-21 | 2010-11-25 | Chang-Ju Lee | Semiconductor device having voltage regulator |
| JP2013251535A (en) * | 2012-05-02 | 2013-12-12 | Semiconductor Energy Lab Co Ltd | Trimming resistor, reference voltage generating circuit and reference current generating circuit |
| CN106557105A (en) * | 2015-09-25 | 2017-04-05 | 鸿富锦精密工业（深圳）有限公司 | Voltage regulator circuit |
| CN206058021U (en) * | 2016-09-29 | 2017-03-29 | 西安微电子技术研究所 | A kind of Flouride-resistani acid phesphatase second order compensation high accuracy, Low Drift Temperature band gap reference voltage source circuit |
| CN106708155A (en) * | 2016-11-22 | 2017-05-24 | 成都芯源系统有限公司 | Integrated circuit and circuit characteristic adjusting method thereof |
| US20190155323A1 (en) * | 2017-11-17 | 2019-05-23 | Samsung Electronics Co., Ltd. | Reference voltage generating circuit method of generating reference voltage and integrated circuit including the same |
| US20210280515A1 (en) * | 2019-05-23 | 2021-09-09 | Fuji Electric Co., Ltd. | Trimming circuit and trimming method |
| CN114637354A (en) * | 2022-03-28 | 2022-06-17 | 杭州红芯微电子信息科技有限公司 | Trimming circuit for operational amplifier circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5274824B2 (en) | Power supply control circuit | |
| CN106020316B (en) | DC linear voltage regulator including switchable circuit for leakage current suppression | |
| US20040217653A1 (en) | Supply selection circuit with programmable hysteresis | |
| US5808327A (en) | AC controller | |
| US11314273B2 (en) | Power supply switching circuit | |
| WO2013138750A1 (en) | SYSTEM AND APPARATUS FOR DRIVER CIRCUIT FOR PROTECTION OF GATES OF GaN FETS | |
| US7683696B1 (en) | Open-drain output buffer for single-voltage-supply CMOS | |
| JP2009147994A (en) | Power supply control circuit | |
| JP6237952B2 (en) | Internal power supply circuit and semiconductor device | |
| US8373398B2 (en) | Area-efficient voltage regulators | |
| US20130215653A1 (en) | Driver circuit and inverter circuit | |
| US7196502B2 (en) | Switching regulator having soft start circuit | |
| US11258444B2 (en) | Devices and methods for high-efficiency power switching with cascode GaN | |
| CN115407819A (en) | Voltage regulating circuit, operation method thereof and chip | |
| EP3579414B1 (en) | A transistor gate driver | |
| US7301745B2 (en) | Temperature dependent switching circuit | |
| CN111835195B (en) | Self-adaptive power supply voltage regulating circuit | |
| WO2021206033A1 (en) | Switching circuit and method for controlling switching circuit | |
| CN115525095A (en) | Voltage regulator power supply circuit and power supply method | |
| US11539205B2 (en) | Inrush current limiter and system including the same | |
| CN117240278B (en) | Power switch control circuit and electronic equipment | |
| US7187157B1 (en) | Power supply remote voltage sensing | |
| US11862423B2 (en) | Relay control circuit and power supply circuit | |
| US20220406542A1 (en) | Relay control circuit and power supply circuit | |
| WO2021199738A1 (en) | Determination device and switch system equipped therewith |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |