WO2018032766A1 - 一种电压产生装置及半导体芯片 - Google Patents
一种电压产生装置及半导体芯片 Download PDFInfo
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- WO2018032766A1 WO2018032766A1 PCT/CN2017/078420 CN2017078420W WO2018032766A1 WO 2018032766 A1 WO2018032766 A1 WO 2018032766A1 CN 2017078420 W CN2017078420 W CN 2017078420W WO 2018032766 A1 WO2018032766 A1 WO 2018032766A1
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- 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
- G05F1/565—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
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- 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
-
- 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
- G05F1/625—Regulating voltage or current wherein it is irrelevant whether the variable actually regulated is ac or dc
- G05F1/656—Regulating voltage or current wherein it is irrelevant whether the variable actually regulated is ac or dc using variable impedances in series and in parallel with the load as final control devices
-
- 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
- G05F1/618—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series and in parallel with the load as final control devices
-
- 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
- G05F1/575—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 characterised by the feedback circuit
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- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
- H03M1/0675—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy
- H03M1/0678—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy using additional components or elements, e.g. dummy components
Definitions
- the present invention relates to the field of circuit technologies, and in particular, to a voltage generating device and a semiconductor chip.
- the power supply in a broad sense, includes the power supply and power supply circuits.
- the common power supply circuits have various regulated power supplies, uninterruptible power supplies, etc. These power supply circuits are required to process the voltage supplied by the power supply into the voltage required by the electrical appliance (ie, the load). And the processed voltage is stable. Therefore, the power supply circuit in the power supply is a very important part. If the electrical appliance (ie, the load) is to work normally, it needs to have a good power supply circuit.
- the voltage supply requirements for the load are widened from a single operating voltage and below the threshold voltage to more voltage domains. That is to say, the general chip power supply technology will involve the normal working voltage of the load or the power supply below the threshold voltage.
- the performance of the chip under different supply voltages can be switched under different states to meet the requirements of different application scenarios and different working modes.
- the supply voltage of the load needs to be changed in real time.
- FIG. 1 is a schematic diagram of a basic principle of a linear on-chip power supply according to an embodiment of the present invention.
- the linear on-chip power supply maintains a stable output voltage Vout by adjusting an R1do resistor, and corresponds to FIG. 1 .
- R1do resistor
- FIG. 1 it can be seen that a certain proportional relationship between R1do and Rload is required to obtain the desired output voltage Vout, so the implementation cannot satisfy the practicability and flexibility of the power supply.
- Embodiments of the present invention provide a voltage generating device and a semiconductor chip capable of providing a good output voltage range in the case where a large difference in load occurs.
- an embodiment of the present invention provides a voltage generating apparatus, which may include: a controller, a first voltage dividing controller, a second voltage dividing controller, and a voltage detector; the first voltage dividing controller and a load is connected in series between the input power source and the ground; the second voltage dividing controller is connected in parallel with the load between a connection point between the first voltage dividing controller and the load and the ground end; Electrically connecting the voltage detector to the load, detecting a load voltage of the load, and feeding back a detected value of the load voltage to the controller; the controller and the voltage detector, the The first voltage dividing controller and the second voltage dividing controller are electrically connected to receive the detected value fed back by the voltage detector, and generate a control signal based on the detected value, the control a signal for controlling the first voltage dividing controller and the second voltage dividing controller to adjust the load voltage to a target value; wherein, when the detected value is greater than the target value, the control signal is used for Perform at least one of the following controls: Resistance of the first voltage dividing controller and
- the first voltage dividing controller or the second voltage dividing controller includes a plurality of set of resistors with switches, and the plurality of resistors with switches Connected in parallel, wherein each set of resistors with switches includes at least one resistor with a switch in parallel, wherein the resistance of the first switch is controlled by a control bit in the control signal to control the switch
- the set of resistors is turned on or off, and a plurality of parallel control bits in the control signal are respectively used to control conduction or turn-off of the plurality of resistor sets with switches.
- a second possible implementation manner when the control bit controls the switch to be turned on, the set of resistances of the switch is turned on and controls the The resistance of the first voltage dividing controller or the second voltage dividing controller is lowered; when the control bit controls the switch to be turned off, the set of resistors with the switch is turned off and the first voltage dividing controller is controlled Or the resistance of the second voltage dividing controller is increased.
- the resistor with a switch is a power gating unit PGCell .
- the switch of the PGCell in the first voltage dividing controller and the switch of the PGCell in the second voltage dividing controller a different type of transistor; a control bit in the control signal received by a switch of a PGCell in the first voltage dividing controller and a control received by a switch of a PGCell in the second voltage dividing controller
- the signal phases of the control bits in the signal are the same.
- a control bit in the control signal received by a switch of a PGCell in the first voltage division controller and the The control bits in the control signal received by the switches of the PGCell in the second voltage division controller are the same control bit.
- the different types of transistors are respectively P-type metal oxide Semiconductor PMOS transistor and N-type metal oxide semiconductor PMOS transistor.
- the switch of the PGCell in the first voltage dividing controller and the switch of the PGCell in the second voltage dividing controller a transistor of the same type; a control bit in the control signal received by a switch of the PGCell in the first voltage dividing controller and the control received by a switch of a PGCell in the second voltage dividing controller
- the signal bits of the control bits in the signal are opposite in phase.
- the same type of transistor is a PMOS transistor or a PMOS transistor.
- the at least one resistor set with the switch includes N N-switched resistors in parallel, each with a switch
- the resistor includes a series resistor and a switch, and N is a positive integer greater than or equal to 2; wherein, among the N switched resistors, a control end of the switch in the first switched resistor is used to receive and at least a control bit corresponding to the set of resistors with switches; among the N resistors with switches, the control terminal of the switch with the next switch is coupled to the series of the resistors of the previous switch And a connection point of the resistor and the
- the at least one resistor set with switches includes N pairs of resistor pairs with switches in parallel, each band
- the resistor pair of the switch includes a pair of resistors with switches in parallel, each resistor having a switch includes a series resistor and a switch, and N is a positive integer greater than or equal to 2; wherein, among the N pairs of resistors with switches, the first a control end of the switch in the first switchable resistor of the pair of switched resistors for receiving a control bit corresponding to the at least one set of resistors with the switch; Centering, the control end of the middle
- a resistance of the first resistor with a switch is greater than that of the second switch The resistance of the resistor in the resistor.
- the plurality of parallel control bits in the control signal At least one control bit for controlling at least one set of resistances of the first voltage-dividing controller corresponding to the at least one control bit to change from off to on; The detected value is less than the target value, and at least one of the plurality of parallel control bits in the control signal is used to control at least one of the first voltage dividing controllers corresponding to the at least
- the voltage detector includes a voltage information feedback unit, a voltage sampling feedback unit, and a voltage encoding feedback unit;
- the voltage information feedback unit is configured to read an analog load voltage on the load and convert it into a digital signal;
- the voltage sampling feedback unit is configured to sample the digital signal based on a clock
- the detected value is a binary serial value.
- an embodiment of the present invention provides a semiconductor chip, which may include a voltage generating device and a load, wherein
- the voltage generating device includes the voltage generating device of any one of the first aspect
- the load operates under the effect of the load voltage, which is any one of a logic circuit, a functional circuit, a memory, or a processor.
- Embodiments of the present invention provide a voltage generating device and adjust a load voltage by appropriately controlling a first voltage dividing controller and a second voltage dividing controller in the voltage generating device to achieve a target value, which may be at a load or A good output voltage range can be provided with a large difference in load current, enhancing and extending the usability.
- FIG. 1 is a schematic diagram of a basic principle of a linear on-chip power supply in the prior art according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of a chip structure of a voltage generating device according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram of a power supply unit according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a voltage detector according to an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of an embodiment of a voltage generating apparatus according to an embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of multiple parallel PGCell sets according to an embodiment of the present invention.
- references to "an embodiment” herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the invention.
- the appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.
- power gating, power gating technology switch implementation mostly use multi-threshold complementary metal oxide semiconductor (MTCMOS, Multi-Threshold CMOS) to reduce the static power consumption of the switch.
- MTCMOS multi-threshold complementary metal oxide semiconductor
- the power gate When the load is working, the power gate is turned off and the load operating voltage is its required voltage. When the load is not working, the power gate is turned on, so that the power supply of the load is lower than the normal voltage.
- the power gating can also modulate the load supply voltage to its desired voltage value (eg, the lowest voltage value that maintains the memory data not lost).
- a power gating cell is a power-gated execution unit of a low-power means, and can realize power-on control of a power supply, and is a digital design standard unit.
- substrate, substrate Die is a fully functional chip cut from the wafer, the size is usually a few millimeters, there are pads or wires for connecting metal wires, metal wires It is then connected to an external pin or to a pad on the board.
- Coupling in an electronic circuit generally refers to sending a signal from the previous stage to the next stage.
- coupling refers to the phenomenon that there is a close fit and interaction between the input and output of two or more circuit elements or electrical networks, and the energy is transferred from one side to the other through interaction.
- a coupling circuit is a circuit that participates in a coupling process. For example, if the DC level of the two-stage circuit is different, capacitive coupling is required; if the input-output impedance is not matched, a circuit with impedance matching is needed.
- the method of connecting each functional circuit is a coupling circuit.
- the coupling circuit usually has one or several functions such as filtering, energy storage, isolation, and impedance transformation.
- Multiple means two or more. "and / or”, describes the association relationship of the associated object, indicating that there can be three kinds of relationships, for example, A and / or B, can mean: A exists separately, A and B exist simultaneously, and B exists separately Kind of situation.
- the character "/" generally indicates that the contextual object is an "or" relationship.
- FIG. 2 is a schematic diagram of a chip structure of an on-chip integrated voltage generating device according to an embodiment of the present invention.
- a plurality of voltage generating devices 10 and a plurality of loads 20 are integrated on a substrate Die. And then make a unified package.
- the input power source VDD (such as a battery) supplies or drives the chip 00, and the voltage generating device 10 on the chip 00 generates a stable voltage under the power supply or drive provided by VDD for the load connected to the chip 00.
- the load 20 (such as logic circuit, function module, memory or processor, etc.) provides power, wherein when the load 20 is a function module, it can be a module for performing various types of signal processing, such as communication protocol processing, voice call processing, and image processing. Or unit.
- the chip 00 shown in FIG. 2 can be used as a part or all of the various types of electronic devices, which is not specifically limited in the embodiment of the present invention, and will be corresponding to the voltage generating device 10 in the chip 00 of FIG. 2 .
- the specific structure and function of the power supply unit 01 composed of the power supply load 20 will be described in detail.
- FIG. 3 is a schematic structural diagram of a power supply unit according to an embodiment of the present invention.
- the power supply unit 01 includes a voltage generating device 10 and a load 20 corresponding thereto.
- the voltage generating device 10 may include: a controller 100, A voltage dividing controller 110, a second voltage dividing controller 120, and a voltage detector 130.
- the first voltage dividing controller 110 is connected in series with the load 20 between the input power source VDD and the ground; the second voltage dividing controller 120 is connected in parallel with the load 20 between the first voltage dividing controller 110 and the load 20 Between VVDD and ground, it can be seen that the voltage at the connection point VVDD reflects the load voltage; the voltage detector 130 is electrically connected to the load 20 for detecting the load voltage of the load 20 in real time and feeding back the load to the controller 100.
- the detected value of the voltage is electrically connected to the voltage detector 130, the first voltage dividing controller 110, and the second voltage dividing controller 120 for receiving the detected value fed back by the voltage detector 130, and based on the The detected value generates a control signal for controlling the first voltage dividing controller 110 and the second voltage dividing controller 120 to adjust the load voltage to reach a target value.
- control rule therein can mainly follow the following principle: when the detected value is greater than the target value, the control signal is used to perform at least one control of: controlling an increase in resistance of the first voltage dividing controller, or Controlling a decrease in resistance of the second voltage dividing controller; when the detected value is less than the target value, the control signal is configured to perform at least one of: controlling a decrease in resistance of the first voltage dividing controller, Or controlling the resistance of the second voltage dividing controller to rise.
- FIG. 4 is a schematic structural diagram of a voltage detector according to an embodiment of the present invention.
- the voltage detector 130 is mainly responsible for real-time detection of the load voltage of the load 20 located on the chip, so as to be effectively controlled.
- the device 100 feeds back the detected value of the load voltage.
- the voltage detector 130 may include a voltage information feedback unit 1301, a voltage sampling feedback unit 1302, and a voltage encoding feedback unit 1303, wherein the voltage information
- the feedback unit 1301 is configured to read the original analog load voltage of the load and convert it into a digital signal under the condition that the enable input terminal is connected to the enable signal;
- the voltage sampling feedback unit 1302 is configured to receive the clock clk signal, and is based on The clock period of the clock clk samples the digital signal converted by the voltage information feedback unit 1301 to obtain a voltage sampling signal.
- the voltage encoding feedback unit 1303 is configured to encode the voltage sampling signal fed back by the voltage sampling feedback unit 1302 to obtain the load voltage.
- the voltage detector 130 feeds back the detected value to the control 100, so that the controller 100 receives the detected value fed back by the voltage detector 130, and generates a control signal based on the detected value for controlling the first voltage dividing controller 110 and the second voltage dividing controller 120 to adjust the The load voltage is reported to the target value.
- the detected value may be a binary serial value.
- the voltage information feedback unit 1301 That is, the analog voltage is changed into a digital signal, and the voltage sampling feedback unit 1302 performs voltage sampling, and the clock period of the sampling is greater than the clock period of the digital signal output by the voltage information feedback unit 1301, thereby obtaining a sampling that is slower than the original digital signal.
- the subsequent digital signal; the voltage encoding feedback unit 1303 is a format changing unit for converting the sampled digital signal reflecting the analog voltage into a digital signal (ie, a detected value) that the controller 100 can recognize, that is, equivalent An encoder or format converter. It can be understood that, in the embodiment of the present invention, when there are multiple loads 20, a corresponding voltage detector 130 is set for each different load 20, so as to cover various application scenarios, such as a maintenance slice. A voltage stabilization scenario for a functional module that consumes power throughout.
- FIG. 5 is a schematic structural diagram of an embodiment of a voltage generating device according to an embodiment of the present invention.
- the first voltage dividing controller of the voltage generating device 10 of the present invention will be described below with reference to FIG. 3 and FIG.
- the specific implementation of 110 and second voltage divider controller 120 is described in detail. Since the first voltage dividing controller 110 and the second voltage dividing controller 120 in the voltage generating device 10 in the embodiment corresponding to FIG. 3 serve as a voltage regulating unit in the voltage generating device 10, each may include a resistor with a switch. Therefore, in a possible implementation manner, the first voltage dividing controller 110 or the second voltage dividing controller 120 may include a plurality of resistor sets with switches (shown in FIG.
- each of the set of resistors with switches includes at least one resistor with a switch in parallel, wherein the resistance of the first switch (eg, R1 in 1 of 1101) is controlled by the signal (in FIG.
- control bits in the controller 100 are controlled to control the conduction or shutdown of the set of resistors (shown in Figure 5 including 1, 2, 3, and 4 in 1101), and the control signals are Parallel control bits (when there are multiple 1101, multiple INs of 1101 are multiple parallel control bits) are used to control the turn-on or turn-off of multiple sets of resistors with switches. It can be understood that the implementation principle in the second voltage division controller 120 is the same as that of the first voltage division controller 110, and details are not described herein again.
- the resistance set of the switch with the switch in the first voltage dividing controller 110 in FIG. 5 or the resistance set of the switch with the switch in the second voltage dividing controller 120 is lowered, that is, when the control is performed.
- the resistance in the first voltage dividing controller is turned off (the resistance can be regarded as infinity in the off state) to be turned on (the resistance value in the on state is multiple sets in parallel). The value of R1 and R2), so the resistance is lowered.
- the set of resistances with the switch is turned off and the resistance of the first voltage dividing controller or the second voltage dividing controller is controlled to rise, that is, when the control switch of the control bit IN is turned off, the first The resistance in the voltage division controller is turned on (the resistance value in the on state is the value of the plurality of parallel connected R1 and R2) (the resistance can be regarded as infinite when the state is off), and thus the resistance is increased.
- the OUT output in the circuit corresponding to FIG. 5 reflects the current conduction state of the voltage dividing controller (the resistance set with the switch), and the control signal of the OUT output can be directly fed back to the controller in the embodiment corresponding to FIG.
- FIG. 6 is a schematic structural diagram of a plurality of parallel PGCell sets according to an embodiment of the present invention, that is, a plurality of parallel PGCell sets in FIG. 6 are equivalent to a first voltage dividing controller 110 or a second voltage dividing controller. 120, wherein each PGCell set (the portion shown in the dashed box in FIG.
- each PGCell set corresponds to a different control bit en, such as en[0]en[1]...en[n], and the en signal in the control bit is respectively controlled by its corresponding controller 100 (in combination with FIG. 3) Show) to control.
- Three or more PGCell sets are shown in FIG. 6, the three PGCell sets are in a parallel relationship, and each PGCell set includes at least one PGCell, and when each PGCell set includes a plurality of PGCells, the plurality of PGCells Connected in parallel.
- the difference in the number of turned-on PGCell sets causes the voltage obtained by the load 20 to be different, so that when the voltage on the load 20 is unstable, the first voltage divider 110 and/or the second voltage divider can be controlled.
- the number of turned-on PGCell sets in 120 maintains the stability of the voltage across load 20.
- the controller 100 serves as the backbone of the voltage generating device 10, and receives various types of the voltage detector 130 on the one hand.
- the feedback information (including the detected value of the load voltage of the load), on the other hand, controls the first voltage dividing controller 110 and/or the second voltage dividing controller 120 according to the feedback information, thereby ensuring that the power supply voltage of the load 20 is stable and reliable. .
- the controller 100 determines that the detected value is greater than the target value, at least one of the plurality of parallel control bits in the control signal generated by the controller 100 is used to control at least one of the first voltage dividing controller At least one PGCell set corresponding to the control bit transitions from off to on; when the controller 100 determines that the detected value is less than the target value, at least one of the plurality of parallel control bits in the control signal generated by the controller 100 And controlling at least one PGCell set corresponding to the at least one control bit in the first voltage division controller to change from on to off.
- the controller 100 determines that the voltage on the load 20 is too small (less than the preset voltage threshold), the load 20 may not work properly, and thus the voltage on the load 20 needs to be raised to the target value.
- the first voltage dividing controller 110 and the load 20 are in series relationship, and the resistance of the load 20 is constant, the voltage on the load 20 can be increased by increasing the current on the load 20, that is, the first partial voltage is reduced.
- the resistance value of the controller 110 can reduce the total series resistance value of the first voltage dividing controller 110 and the load 20, thereby increasing the current on the load 20 (and the voltage dividing controller 110), thereby increasing the voltage on the load 20.
- the first voltage dividing controller 110 is a plurality of parallel PGCell sets, the first voltage dividing controller 110 is reduced by increasing the number of conduction of the parallel PGCell sets in the first voltage dividing controller.
- the resistance value reaches the purpose of stabilizing the voltage value on the load 20; and/or, when the detected value is greater than the target value, at least one of the plurality of parallel control bits in the control signal is used to control the second partial pressure
- At least one PGCell set corresponding to the at least one control bit in the controller 120 transitions from on to off; when the detected value is less than the target value, at least one of the plurality of parallel control bits in the control signal is used to control Two-part pressure control
- the at least one PGCell set corresponding to the at least one control bit is switched from off to on.
- the control principle is described with reference to the adjustment principle of the first voltage dividing controller 110 in the above embodiment, and details are not described herein again. It can be understood that, in the embodiment of the present invention, the number of PGCells in the PGCell set is not limited, and may be one or more, and is determined according to a specific application scenario, and the number of the PGCells is one. At the time, the PGCell collection is equivalent to PGCell.
- the voltage generating device provided by the present invention can solve the problem of output voltage range in the case where the load current estimation is inaccurate or the difference between different scenes is large, and can also effectively suppress the large PGCell set integrated in the chip. Instantaneous impact, reducing application risk and improving on-chip power quality, and then, will be provided by the present invention How the voltage generating device effectively suppresses large transient impacts will be described in detail.
- FIG. 5 mainly shows the first voltage dividing controller 110 (only one PGCell set 1101 is drawn, the structure is similar when multiple PGCell sets are similar, and the structures are connected in parallel with each other), and the second point is
- the voltage controller 120 (only one PGCell set 1201 is drawn, the multiple PGCell sets are similar in structure, and the parallel structure is also connected) and the load equivalent impedance Rload (ie load 20), VDD is the input power supply, and VVDD is the load voltage. .
- each resistor with a switch includes a series resistor and a switch, N is a positive integer greater than or equal to 2; wherein, among the N pairs of resistors with a switch, the first pair of resistors with a switch (as shown The control terminal of the switch (1 in 1101 of 1101 in FIG. 5) of the first switch with a resistor (1 in R1 of 1101 in FIG. 5) in 1) of 1 in 1 is used for reception. a control bit corresponding to the set of PGCells (1101 in FIG.
- the first pair of switches in the pair of resistors (such as 2 in 1101 in FIG. 5)
- the control terminal of the middle switch of the resistor (R1 in 2 of 1101 in Fig. 5) (such as EN1 of R1 in 2 in 1101) is coupled to the first band of the resistor pair of the previous switch a connection point of a series switch and a resistor in the resistance of the switch (such as ST1 of R1 in 1 in 1101 of FIG. 5) and receiving a signal output from the connection point; at the N switch
- the resistance pair, the control terminal of the switch in the second switchable resistor pair (the EN2 of R2 in 4 of 1101 in FIG.
- the resistance pair, the control pair of the middle switch with the resistance of the second switch (the EN2 of R2 in 3 of 1101 in Fig. 5) is coupled to the resistor pair of the next switch.
- the connection point of the series-connected switch and the resistor in the resistor of the two-band switch (such as ST2 of R2 in 4 in 1101 of FIG. 5) and receives the signal output from the connection point.
- each resistor pair with a switch can also be replaced by a resistor with a switch, for example, At least one of the set of resistors (PGCell set) with the switch in the first voltage dividing controller 110 or the second voltage dividing controller 120 in the voltage generating device 10 includes N N-switched resistors in parallel, each band
- the resistance of the switch includes a resistor and a switch in series, N is a positive integer greater than or equal to 2, wherein among the N resistors with a switch, a control terminal of the switch in the resistance of the first switch is used for receiving At least one control set corresponding to the set of resistors; among the N resistors with a switch, the control end of the switch in the next switch is coupled to the connection point of the switch and the resistor connected in series with the resistor of the previous switch and receives The signal output from the connection point. In this way
- a plurality of PGCells in the PGCell set (1101 or 1201) may be sequentially in order (as shown in FIG. 5, R1 of 1 from 1101, R1 of 2, R1 of 3, R1 of 4, R2 of 4, and R2 of 3, 4 R2 ⁇ 2 R2 ⁇ 1 R2) is started. Since the power-on process is sequential, the current will not be too high, which can effectively prevent the VVDD voltage from being excessively shocked.
- the double-tube implementation is adopted. Assume that R1 is larger than R2 to suppress the system surge current. For Rload, R1 and R2 are both small, so by connecting multiple PGCell sets in parallel, or by paralleling multiple PGCells in the PGCell set, VVDD is very close to VDD.
- the path resistance of each PGCell (such as MTCMOS) in the first voltage-dividing controller 110 is generally tens of ohms, while the resistance is generally greater than one million ohms in the non-enabled state.
- the switches in the set of resistances (PGCell sets) in the first voltage dividing controller or in the second voltage dividing controller are Different types of transistors can be commonly used as Power Switches, transistors in conventional CMOS processes, or the most frequently used multi-threshold voltage CMOS in power gating.
- the switch may include: a P-channel metal oxide semiconductor (PMOS) transistor, an N-channel metal oxide semiconductor (NMOS) transistor, or a multi-threshold voltage MTCMOS transistor.
- the switch of the PGCell in the first voltage dividing controller and the switch of the PGCell in the second voltage dividing controller are different types of transistors, for example, P-type metal oxide semiconductor PMOS tubes respectively.
- the control bit in the control signal received by the switch of the PGCell in the first voltage dividing controller and the control signal received by the switch of the PGCell in the second voltage dividing controller The signal bits of the control bits are the same.
- the control bit in the control signal received by the switch of the PGCell in the first voltage dividing controller and the control bit in the control signal received by the switch of the PGCell in the second voltage dividing controller are the same control bit.
- the switches of the PGCell in the first voltage dividing controller and the switches of the PGCell in the second voltage dividing controller are not simultaneously turned on.
- the switch of the PGCell in the first voltage dividing controller and the switch of the PGCell in the second voltage dividing controller are the same type of transistors, for example, all of the PMOS tubes or all of the NMOS tubes
- the control bit in the control signal received by the switch of the PGCell in the first voltage dividing controller is opposite to the signal phase of the control bit in the control signal received by the switch of the PGCell in the second voltage dividing controller.
- the principle of the PMOS tube is similar to that of the PMOS tube, except that the polarity of the gate control is opposite.
- the switches of the PGCell in the first voltage dividing controller and the switches of the PGCell in the second voltage dividing controller are not simultaneously turned on.
- the number of PGCell sets in the first voltage dividing controller 110 and the second voltage dividing controller 120 and the number of PGCells included in the set are determined according to design requirements, and may be the same or different; PGCell is used for The adjusted voltage resolution and the adjustment range are different according to different schemes, and may be determined according to the design requirements, which are not specifically limited in the embodiment of the present invention.
- the chip configuration process of the embodiment of the present invention may be as follows:
- the controller 100 configures a register in the controller 100 required for operation according to the obtained system test related result (the result is a preset configuration built in the chip), and the voltage detector in FIG. 3 and FIG. 4 can be saved in the register.
- the chip-related software configures the chip-related startup register, and the system or function module in the chip starts to run;
- the controller 100 reads the voltage information of the load 20 according to the state of the voltage detector 130 in real time according to the optional software configuration, and adjusts the first voltage dividing controller 110 and the second voltage dividing controller 120 in real time according to the control strategy.
- PGCell collection switch state; strategy is as follows:
- the PGCell in the second voltage dividing controller 120 may be configured according to the control strategy. Turning off part or even all, the PGCell set in the first voltage dividing controller 110 is turned on or even all, thereby ensuring the voltage of the load 20 is safe;
- the second voltage dividing controller 120 may be configured according to the control strategy.
- the PGCell set open part or even all, and the PGCell set in the first voltage dividing controller 110) is turned off part or even all, thereby ensuring that the back electromotive force generated by the load 20 due to the operating state does not harm other parts (the larger back electromotive force is transmitted to other parts).
- the module can cause timing problems due to voltage and data path voltage differences, and will also cause aging acceleration of the module.
- connection relationship involved in this embodiment refers to an electrical connection, which may be directly connected by a wire or by other electrical means.
- the present invention also provides a semiconductor chip comprising the voltage generating device 10 and the load 20 provided in all of the above embodiments of the present invention; the load 20 operates under the action of the load voltage, the load being a logic circuit Any of a functional circuit, a memory, or a processor. It is to be understood that the functions of the modules in the voltage generating device 10 may be referred to the specific implementations in the device embodiments in FIG. 1 to FIG. 6 , and details are not described herein again.
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Abstract
Description
Claims (17)
- 一种电压产生装置,其特征在于,包括:控制器、第一分压控制器、第二分压控制器、和电压检测器;所述第一分压控制器与负载串联在输入电源与接地端之间;所述第二分压控制器与所述负载并联在所述第一分压控制器和所述负载之间的连接点与所述接地端之间;所述电压检测器与所述负载之间电连接,用于检测所述负载的负载电压并向所述控制器反馈所述负载电压的检测值;所述控制器与所述电压检测器、所述第一分压控制器以及所述第二分压控制器之间均电连接,用于接收所述电压检测器反馈的所述检测值,并基于所述检测值生成控制信号,所述控制信号用于控制所述第一分压控制器和所述第二分压控制器来调节所述负载电压到目标值;其中,当所述检测值大于所述目标值,所述控制信号用于执行如下至少一项控制:控制所述第一分压控制器的电阻升高、或控制所述第二分压控制器的电阻降低;当所述检测值小于所述目标值,所述控制信号用于执行如下至少一项控制:控制所述第一分压控制器的电阻降低、或控制所述第二分压控制器的电阻升高。
- 如权利要求1所述的装置,其特征在于,所述第一分压控制器或所述第二分压控制器包括多个带开关的电阻集合,所述多个带开关的电阻集合之间并联连接,其中,每个带开关的电阻集合中包含并联的至少一个带开关的电阻,其中第一带开关的电阻被所述控制信号中的控制位所控制从而控制所述带开关的电阻集合的导通或关闭,所述控制信号中的多个并行的控制位分别用于控制所述多个带开关的电阻集合的导通或关闭。
- 如权利要求2所述的装置,其特征在于,当所述控制位控制所述开关导通,则所述带开关的电阻集合被导通并控制所述第一分压控制器或所述第二分压控制器的电阻降低;当所述控制位控制所述开关关闭,则所述带开关的电阻集合被关闭并控制所述第一分压控制器或所述第二分压控制器的电阻升高。
- 如权利要求2或3所述的装置,其特征在于,所述带开关的电阻为电源门控单元PGCell。
- 如权利要求4所述的装置,其特征在于,所述第一分压控制器中的PGCell的开关和所述第二分压控制器中的PGCell的开关为不同类型的晶体管;所述第一分压控制器中的PGCell的开关所接收的所述控制信号中的控制位和所述第二分压控制器中的PGCell的开关所接收的所述控制信号中的控制位的信号相位相同。
- 如权利要求5所述的装置,所述第一分压控制器中的PGCell的开关所接收的所述 控制信号中的控制位和所述第二分压控制器中的PGCell的开关所接收的所述控制信号中的控制位是同一个控制位。
- 如权利要求5或6所述的装置,其特征在于,所述不同类型的晶体管分别为P型金属氧化物半导体PMOS管和N型金属氧化物半导体NMOS管。
- 如权利要求4所述的装置,其特征在于,所述第一分压控制器中的PGCell的开关和所述第二分压控制器中的PGCell的开关为相同类型的晶体管;所述第一分压控制器中的PGCell的开关所接收的所述控制信号中的控制位与所述第二分压控制器中的PGCell的开关所接收的所述控制信号中的控制位的信号相位相反。
- 如权利要求8所述的装置,其特征在于,所述相同类型的晶体管为PMOS管或NMOS管。
- 如权利要求2至9中任一项所述的装置,其特征在于,至少一个带开关的电阻集合中包含并联的N个带开关的电阻,每个带开关的电阻包括串联的电阻和开关,N为大于等于2的正整数;其中,在所述N个带开关的电阻中,第一带开关的电阻中的开关的控制端用于接收与所述至少一个带开关的电阻集合对应的控制位;在N个带开关的电阻中,下一带开关的电阻中开关的控制端耦合于上一带开关的电阻中串联的开关和电阻的连接点并接收所述连接点输出的信号。
- 如权利要求2至9中任一项所述的装置,其特征在于,至少一个带开关的电阻集合中包含并联的N个带开关的电阻对,每个带开关的电阻对包括并联的一对带开关的电阻,每个带开关的电阻包括串联的电阻和开关,N为大于等于2的正整数;其中,在N个带开关的电阻对中,第一带开关的电阻对中的第一带开关的电阻中的开关的控制端用于接收与所述至少一个带开关的电阻集合对应的控制位;在N个带开关的电阻对中,下一带开关的电阻对中第一带开关的电阻的中开关的控制端耦合于上一带开关的电阻对中第一带开关的电阻中的串联的开关和电阻的连接点并接收所述连接点输出的信号;在N个带开关的电阻对中,最后一个带开关的电阻对中的第二带开关的电阻中的开关的控制端耦合于所述最后一个带开关的电阻对中的第一带开关的电阻中串联的开关和电阻的连接点并接收所述连接点输出的信号;在N个带开关的电阻对中,上一带开关的电阻对中第二带开关的电阻的中开关的控制端耦合于下一带开关的电阻对中第二带开关的电阻中的串联的开关和电阻的连接点并接收所述连接点输出的信号。
- 如权利要求11所述的装置,其特征在于,在任一带开关的电阻对中,第一带开关 的电阻中的电阻的阻值大于第二带开关的电阻中的电阻的阻值。
- 如权利要求2至12中任一项所述的装置,其特征在于,当所述检测值大于所述目标值,则所述控制信号中的多个并行的控制位中的至少一个控制位用于控制所述第一分压控制器中与所述至少一个控制位相应的至少一个带开关的电阻集合从关闭转变为导通;当所述检测值小于所述目标值,则所述控制信号中的多个并行的控制位中的至少一个控制位用于控制所述第一分压控制器中与所述至少一个控制位相应的至少一个带开关的电阻集合从导通转变为关闭。
- 如权利要求2至13中任一项所述的装置,其特征在于,当所述检测值大于所述目标值,则所述控制信号中的多个并行的控制位中的至少一个控制位用于控制所述第二分压控制器中与所述至少一个控制位相应的至少一个带开关的电阻集合从导通转变为关闭;当所述检测值小于所述目标值,则所述控制信号中的多个并行的控制位中的至少一个控制位用于控制所述第二分压控制器中与所述至少一个控制位相应的至少一个带开关的电阻集合从关闭转变为导通。
- 如权利要求1至14中任一项所述的装置,其特征在于,所述电压检测器包括电压信息反馈单元、电压采样反馈单元和电压编码反馈单元;其中,所述电压信息反馈单元用于读取所述负载上的模拟负载电压并转换为数字信号;所述电压采样反馈单元用于基于时钟周期对所述数字信号进行采样得到电压采样信号;所述电压编码反馈单元用于将所述电压采样信号进行编码得到所述负载电压的所述检测值。
- 如权利要求15所述的装置,其特征在于,所述检测值为二进制串行数值。
- 一种半导体芯片,其特征在于,包括如权利要求1至16任一项所述的装置、以及所述负载;所述负载在所述负载电压的作用下工作,所述负载是逻辑电路、功能电路、存储器、或处理器中的任一项。
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CN106292827B (zh) | 2018-09-21 |
CN106292827A (zh) | 2017-01-04 |
US10345835B2 (en) | 2019-07-09 |
CN109032233A (zh) | 2018-12-18 |
US20190121380A1 (en) | 2019-04-25 |
KR20190002680A (ko) | 2019-01-08 |
EP3447603A4 (en) | 2019-06-26 |
EP3447603A1 (en) | 2019-02-27 |
EP3447603B1 (en) | 2023-05-10 |
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