阅读说明：本技术 电荷泵***电路 (Charge pump tracker circuit ) 是由 纳迪姆·赫拉特 迈克尔·R·卡伊 于 2019-05-06 设计创作，主要内容包括：公开了电荷泵跟踪器电路,所述电荷泵跟踪器电路具有第一开关网络,所述第一开关网络被配置成在第一充电阶段期间使第一电容器耦合于电压输入端子与接地端子之间,并且在第一放电阶段期间使所述第一电容器耦合于所述电压输入端子与泵输出端子之间。第二开关网络被配置成在第二充电阶段期间使第二电容器耦合于所述电压输入端子与所述接地端子之间,并且在第二放电阶段期间使所述第二电容器耦合于所述电压输入端子与所述泵输出端子之间。开关控制器被配置成控制所述第一开关网络和所述第二开关网络,使得所述第一放电阶段和所述第二放电阶段在并行模式下是一致的,并且使得所述第一放电阶段和所述第二放电阶段在交错模式下交替。(Disclose charge pump tracker circuit, the charge pump tracker circuit has first switch network, the first switch network is configured to be coupled in first capacitor device between voltage input-terminal and ground terminal during the first charging stage, and is coupled in the first capacitor device between the voltage input-terminal and pump output terminal during the first discharge regime.Second switch network is configured to be coupled in the second capacitor between the voltage input-terminal and the ground terminal during the second charging stage, and is coupled in second capacitor between the voltage input-terminal and pump output terminal during the second discharge regime.Switch controller is configured to control the first switch network and the second switch network, so that first discharge regime and second discharge regime are consistent in a parallel mode, and first discharge regime and second discharge regime are replaced under interleaving mode.)

1. a kind of charge pump tracker circuit, the charge pump tracker circuit include:

First capacitor device；

First switch network, the first switch network are configured to make the first capacitor device during the first charging stage It is coupled between voltage input-terminal and ground terminal, and is coupled in the first capacitor device during the first discharge regime Between the voltage input-terminal and pump output terminal；

Second capacitor；

Second switch network, the second switch network are configured to make second capacitor during the second charging stage It is coupled between the voltage input-terminal and the ground terminal, and makes second capacitor during the second discharge regime Device is coupled between the voltage input-terminal and pump output terminal；And

Switch controller, the switch controller are configured to control the first switch network and the second switch net Network so that first discharge regime and second discharge regime are consistent in a parallel mode, and makes described One discharge regime and second discharge regime replace under interleaving mode.

2. charge pump tracker circuit as described in claim 1, wherein the first capacitor device is coupled in the first winged cross-node Between the second winged cross-node, and the first switch network includes:

First switch, the first switch is coupled between the described first winged cross-node and voltage source terminal, described in closure When first switch, the first charging current passes through the voltage source terminal and flow in the first capacitor device；

Second switch, the second switch are coupled between the described first winged cross-node and first lead-out terminal, in closure institute When stating second switch, the first lead-out terminal receives the first discharge current from the first capacitor device；

Third switch, the third switch are coupled between the described second winged cross-node and the voltage source terminal, are being closed When the third switchs, the voltage at the voltage source terminal is supplied to described second to fly across section by the voltage source terminal Point；And

4th switch, the 4th switch are coupled between the described second winged cross-node and the first ground nodes terminal, are closing When closing the described 4th switch, the first ground nodes terminal makes the described second winged cross-node ground connection.

3. charge pump tracker circuit as claimed in claim 2, wherein second capacitor is coupled in third and flies cross-node Between the 4th winged cross-node, and the second switch network includes:

5th switch, the 5th switch are coupled in the third and fly be closed between cross-node and the voltage source terminal When the described 5th switch, the second charging current passes through the voltage source terminal and flow in second capacitor；

6th switch, the 6th switch are coupled in the third and fly closing between cross-node and the first lead-out terminal When closing the described 6th switch, the first lead-out terminal receives the second discharge current from second capacitor；

7th switch, the 7th switch are coupled between the 4th winged cross-node and the voltage source terminal, are being closed When the described 7th switch, it is supplied to the described 4th to fly the voltage at the voltage source terminal by the voltage source terminal Cross-node；And

8th switch, the 8th switch are coupled between the 4th winged cross-node and the second ground nodes terminal, are closing When closing the described 8th switch, the second ground nodes terminal makes the described 4th winged cross-node ground connection.

4. charge pump tracker circuit as claimed in claim 3, wherein the switch controller is configured to described parallel The second switch and the 6th switch are consistently disconnected and be closed under mode, and are simultaneously switched off under the interleaving mode The second switch is simultaneously closed the 6th switch, and vice versa.

5. charge pump tracker circuit as described in claim 1, wherein first discharge regime and the second electric discharge rank Section provides 100% working cycles for the interleaving mode.

6. charge pump tracker circuit as described in claim 1, the charge pump tracker circuit further include be coupled in it is described Power inductor between pump output terminal and radio frequency amplifier supply terminal, wherein the power inductor is configured to pair The electric power flowed between pump output terminal and the radio frequency amplifier supply terminal is filtered.

7. charge pump tracker circuit as claimed in claim 6, the charge pump tracker circuit further includes parallel amplifier, The parallel amplifier includes

First amplifier input terminal, first amplifier input terminal be coupled to the radio frequency amplifier supply terminal with Receive feedback signal；

Second amplifier input terminal, second amplifier input terminal are configured to receive target voltage waveform；And

Amplifier output terminal, the amplifier output terminal are communicably coupled to pump output terminal, wherein it is described simultaneously Row amplifier is configured in response to the difference between the target voltage waveform and the feedback signal and provides enlarged Output waveform.

8. charge pump tracker circuit as claimed in claim 7, wherein the target voltage waveform is envelope-tracking signal.

9. charge pump tracker circuit as claimed in claim 7, wherein the target voltage waveform is mean power tracking letter Number.

10. charge pump tracker circuit as claimed in claim 7, the charge pump tracker circuit further includes compensating electric capacity Device, the compensation capacitor are coupled between the amplifier output terminal and the radio frequency amplifier supply terminal, wherein institute It states compensation capacitor and is configured to provide offset voltage to increase the dynamic range of the enlarged output waveform, to reduce Maximum voltage needed for supplying the parallel amplifier.

11. a kind of charge pump tracker system, the charge pump tracker system include:

First pair of boosting charge pump, first pair of boosting charge pump are configured to through the first radio frequency amplifier supply terminal The first discharge current from first capacitor device and the second discharge current from the second capacitor are selectively provided；

First switch controller, the first switch controller are configured to control first pair of boosting charge pump, so that First discharge current and second discharge current flow through first radio frequency amplifier simultaneously under the first parallel schema Supply terminal, and first discharge current and second discharge current is made to alternately pass through institute under the first interleaving mode State the first radio frequency amplifier supply terminal；

Second pair of boosting charge pump, second pair of boosting charge pump are configured to through the second radio frequency amplifier supply terminal Third discharge current from third capacitor and the 4th discharge current from the 4th capacitor are selectively provided；And

Second switch controller, the second switch controller are configured to control second pair of boosting charge pump, so that The third discharge current and the 4th discharge current flow through second radio frequency amplifier simultaneously under the second parallel schema Supply terminal, and the third discharge current and the 4th discharge current is made to alternately pass through institute under the second interleaving mode State the second radio frequency amplifier supply terminal.

12. charge pump tracker system as claimed in claim 11, the charge pump tracker system further includes multiple radio frequencies Amplifier, the multiple radio frequency amplifier are configured to put from the first radio frequency amplifier supply terminal and second radio frequency Big device supply terminal receives electric power.

13. charge pump tracker system as claimed in claim 12, the charge pump tracker system further includes auxiliary switch, The auxiliary switch is configured to the supply of at least some of the multiple radio frequency amplifier radio frequency amplifier selectively Input terminal is coupled to the first radio frequency amplifier supply terminal and the second radio frequency amplifier supply terminal.

14. charge pump tracker system as claimed in claim 13, wherein the first switch controller and described second is opened Controller is closed to be configured to through first parallel schema and/or second parallel schema to the multiple radio frequency amplifier In some radio frequency amplifiers provide electric power simultaneously, and pass through first interleaving mode and/or second interleaving mode Come other radio frequency amplifiers supplied in the multiple radio frequency amplifier.

15. charge pump tracker system as claimed in claim 11, the charge pump tracker system further include:

First parallel amplifier, first parallel amplifier include

First amplifier input terminal, first amplifier input terminal are coupled to the first radio frequency amplifier feed end Son is to receive the first feedback signal；

Second amplifier input terminal, second amplifier input terminal are configured to receive target voltage waveform；And

First amplifier output terminal, first amplifier output terminal are communicably coupled to the first pump output terminal, Described in the first parallel amplifier be configured in response to the difference between the target voltage waveform and first feedback signal It is worth and the first enlarged output waveform is provided；And

Second parallel amplifier, second parallel amplifier include

Second amplifier input terminal, second amplifier input terminal are coupled to the second radio frequency amplifier feed end Son is to receive the second feedback signal；

Third amplifier input terminal, the third amplifier input terminal are configured to receive target voltage waveform；And

4th amplifier output terminal, the 4th amplifier output terminal are communicably coupled to the second pump output terminal, Described in the second parallel amplifier be configured in response to the difference between the target voltage waveform and second feedback signal It is worth and the second enlarged output waveform is provided.

16. charge pump tracker system as claimed in claim 15, wherein the target voltage waveform is envelope-tracking letter Number.

17. charge pump tracker system as claimed in claim 15, wherein the target voltage waveform is mean power tracking Signal.

18. charge pump tracker system as claimed in claim 11, wherein first discharge current and second electric discharge Electric current is provided by the first discharge regime and the second discharge regime, and first discharge regime and second discharge regime are directed to First interleaving mode provides 100% working cycles together.

19. charge pump tracker system as claimed in claim 11, the charge pump tracker circuit further includes being coupled in The first power inductor between one pump output terminal and the first radio frequency amplifier supply terminal, wherein first function Rate inductor is configured to flowing between first pump output terminal and the first radio frequency amplifier supply terminal Electric power is filtered.

20. charge pump tracker system as claimed in claim 15, the charge pump tracker circuit further includes being coupled in institute State the second power inductor between the second pump output terminal and the second radio frequency amplifier supply terminal, wherein described the Two power inductors are configured to flow between the second pump output terminal and the second radio frequency amplifier supply terminal Dynamic electric power is filtered.

Technical field

Embodiment disclosed herein is related to the electric power management system for supplying power to radio frequency amplifier.

Background technique

5th generation new radio (5G-NR) wireless communication system has been widely regarded as being more than the current third generation (3G) communication standard (for example, wideband code division multiple access (WCDMA)) and forth generation (4G) communication standard are (for example, long term evolution (LTE)) next wireless communication standard.Compared with the wireless communication system based on 3G and 4G communication standard, it is contemplated that 5G-NR without Line communication system provides significant higher data rate, the coverage area of raising, the signalling efficiency of enhancing and the waiting of reduction Time.

In this regard, 5G-NR emit wireless device when power grade 2 require in 100MHz or more than it is relatively large It needs to power under mean power tracing mode to radio frequency amplifier when modulation bandwidth operates.Alternatively, 5G-NR is needed to emit nothing Line apparatus is powered under envelope-tracking mode to radio frequency amplifier for lower modulation bandwidth.Therefore, it is necessary to charge pump tracking Device circuit, the charge pump tracker circuit can be reconfigured to convey the required relatively higher voltage and electricity of mean power tracking It flows and the more efficient conveying to electric power is provided under envelope-tracking mode.

Summary of the invention

Disclosing charge pump tracker circuit, the charge pump tracker circuit has a first switch network, and described first Switching network be configured to make during the first charging stage first capacitor device be coupled in voltage input-terminal and ground terminal it Between, and so that the first capacitor device is coupled in the voltage input-terminal and pump output terminal during the first discharge regime Between.Second switch network be configured to make during the second charging stage the second capacitor be coupled in the voltage input-terminal with Between the ground terminal, and second capacitor is set to be coupled in the voltage input-terminal during the second discharge regime Between pump output terminal.Switch controller is configured to control the first switch network and the second switch net Network so that first discharge regime and second discharge regime are consistent in a parallel mode, and makes described One discharge regime and second discharge regime are replaced under interleaving mode.

Those skilled in the art later will in the described in detail below of reading preferred embodiment associated with attached drawing It solves the scope of the present disclosure and recognizes its additional aspect.

Detailed description of the invention

It is incorporated in this specification and is formed several aspects of the Detailed description of the invention disclosure of the part of this specification, and with Description is used to illustrate the principle of the disclosure together.

Fig. 1 is being reconfigured to provide for the interleaving mode of mean power tracking operation and for wrapping according to the disclosure The schematic diagram of the charge pump tracker circuit of the parallel schema of network tracking operation.

Fig. 2 is the off-state of the switch of the charge pump tracker circuit operated according to parallel schema and interleaving mode and closes The exemplary timing chart of conjunction state.

Fig. 3 is the supply voltage V of single boosting charge pump of the relevant technologies operated under 75% working cycles_CCRelative to The curve graph of direct current (DC) load current.

Fig. 4 is the supply voltage V of the embodiment of Fig. 1 under 100% working cycles according to interleaving mode operation_CCPhase For the curve graph of DC load current.

Fig. 5 is with double boosting charge pumps and to be configured to according to the interleaving mode and use for mean power tracking operation The dual charge pump tracker system of the controllers of double boosting charge pumps is operated in the parallel schema of envelope-tracking operation Schematic diagram.

Specific embodiment

The embodiment expression being set forth below enables those skilled in the art to practice the necessary of the embodiment Information, and illustrate the optimal mode for practicing the embodiment.After being described below in view of attached drawing reading, art technology Personnel will be appreciated that the concept of the disclosure, and the application in these concepts not specifically mentioned herein will be recognized.It should be understood that this A little concepts and application belong to the range of disclosure and the accompanying claims book.

It will be understood that these elements are not answered although term first, second etc. can be used to describe various elements herein It is limited by these terms.These terms are only used to distinguish an element with another element.For example, this public affairs is not being departed from In the case where the range opened, first element can be known as to second element, and similarly, second element can be known as first Element.As used herein, term "and/or" includes any and institute of one or more of associated cited project There is combination.

It will be understood that when such as elements such as floor, area or substrate be referred to as in another element " on " or extend to another member When part "upper", it can be directly on another element or extend directly on another element, or can also deposit In medium element.In comparison, it when element is referred to as " being directly in " or " directly extend " to another element, is not present Jie's element.Similarly, it will be appreciated that when for example the elements such as floor, area or substrate are referred to as in another element " top " or another When element " top " extends, it can be directly in above another element or directly extend above another element, Or there may also be medium elements.In comparison, when element is referred to as above " being directly in " another element or " direct " is another When extending above one element, medium element is not present.It will also be understood that when element is referred to as " connection " or " coupled " to another element When, it can be directly connected or be coupled to another element, or may exist medium element.In comparison, when element quilt Referred to as " when being directly connected " or " directly coupled " to another element, medium element is not present.

As illustrated in the diagram, can be used herein such as " lower section " or " top " or " top " or " lower part " or "horizontal" or Relative terms such as " vertical " come describe an element, the area Ceng Huo and another element, the area Ceng Huo relationship.It will be understood that these terms Being differently directed for the device other than the orientation described in figure is intended to term discussed above.

Terms used herein are the purposes for only describing specific embodiment, and are not intended to limit the disclosure.Such as It is used herein, unless the context clearly dictates otherwise, it includes multiple for otherwise wishing singular " one " and " described " also Number form formula.Will be further understood that, term " includes " and/or " comprising " specified when in this article stated feature, integer, The presence of step, operations, elements, and/or components, but be not excluded for other one or more features, integer, step, operation, element, The presence or addition of component and/or its group.

Unless otherwise defined, otherwise all terms (including technology and scientific and technical terminology) used herein have and the disclosure The identical meaning of the normally understood meaning of technical staff in affiliated field.It will be further understood that, terms used herein are answered It is interpreted as having and its consistent meaning of meaning in the context and related fields of this specification, and will not be with ideal Change or excessively formal meaning explains, unless clearly so defining herein.

Fig. 1 be according to the disclosure be reconfigured with provide for mean power tracking (APT) operation interleaving mode and The schematic diagram of the exemplary implementation scheme of the charge pump tracker circuit 10 of parallel schema for envelope-tracking (ET) operation.Electricity It includes double boosting charge pumps 12 with first switch network 14 that lotus, which pumps tracker circuit 10, and the first switch network includes coupling Together in the first capacitor device C1 between the first winged cross-node 16 and the second winged cross-node 18.First switch S1 is coupled in voltage source Between son 20 and the first winged cross-node 16.Second switch S2 is coupled between pump output terminal 22 and the first winged cross-node 16.The Three switch S3 are coupled between the second winged cross-node 18 and voltage source terminal 20, and the 4th switch S4 is coupled in fixed voltage end Between son 24 and the second winged cross-node 18.Battery V_BATIt is usually coupled to voltage source terminal 20, and fixed voltage terminal 24 is usual Coupling grounding.

Double boosting charge pumps 12 further include second switch network 26, the second switch network include be coupled in third fly across First capacitor device C2 between node 28 and the 4th winged cross-node 30.5th switch S5 is coupled in voltage source terminal 20 and third flies Between cross-node 28.6th switch S6 is coupled in pump output terminal 22 and third flies between cross-node 28.7th switch S7 coupling Between the 4th winged cross-node 30 and voltage source terminal 20, and the 8th switch S8 is coupled in fixed voltage terminal 24 and the 4th and flies Between cross-node 30.

Charge pump tracker circuit 10 further includes switch controller 32, and the switch controller is configured to respectively control Disconnection and closure of the first switch of one switching network 14 and second switch network 26 to the 8th switch S1-S8.Specifically, it opens Closing controller 32 has control bus 34, and the control bus is communicably coupled to the control of first switch to the 8th switch S1-S8 Terminal processed.In some embodiments, first switch is field effect transistor to the 8th switch S1-S8, and wherein control terminal is It is coupled to the field effect transistor gate terminal of the control bus 34 of switch controller 32.In other embodiments, it first opens Closing to the 8th switch S1-S8 is micro electro-mechanical system switch, wherein the control terminal is coupled to the micro electronmechanical of control bus 34 System gate terminal.

In order to charge to first capacitor device C1, switch controller 32 is closed by order first switch S1 and the 4th switch S4 And third switch S3 and the 4th switch S4 are disconnected so that the first charge current flows originate the into first capacitor device C1 One charging stage.Switch controller 32 is with post command first switch S1 and the 4th switch S4 disconnection and second switch S2 and third Switch S3 is closed to originate the first discharge regime, to allow the first discharge current to flow from first capacitor device C1 and flow through pump output Terminal 22.

In order to charge to the second capacitor C2, switch controller 32 passes through the 5th switch S5 of order and the 6th switch S6 closure And the 7th switch S7 and the 8th switch S8 disconnect so that the second charge current flows originate the into the second capacitor C2 Two charging stages.Switch controller 32 is disconnected with post command the 5th switch S5 and the 8th switch S8 and the 6th switch S6 and the 7th Switch S7 is closed to originate the second discharge regime, to allow the second discharge current to flow from the second capacitor C2 and flow through pump output Terminal 22.

Switch controller 32 is further configured to by controlling be made of first switch to the 4th switch S1-S4 first Switching network 14 and by the 5th switch to the 8th switch S5-S8 second switch network 26 constituted so that it is described first discharge rank Section and second discharge regime are consistent, and provide parallel operational mode.Therefore, the parallel schema is in pump output terminal The summation of first discharge current and second discharge current is provided at 22, this generates the higher efficiency for being used for ET.

Switch controller 32 is still further configured to by controlling be made of first switch to the 4th switch S1-S4 the One switching network 14 and by the 5th switch to the 8th switch S5-S8 second switch network 26 constituted so that it is described first discharge Stage and second discharge regime are replaced, and provide interleaving mode, so that first discharge current and described second Discharge current is not added at pump output terminal 22, but sequentially flows through pump output terminal 22.Therefore, the interleaving mode mentions For higher continuous power and be conducive to APT.

Charge pump tracker circuit 10 further includes being coupled in pump output terminal 22 (to be labeled as with RF amplifier supply terminal 36 V_CC) between power inductor L1.Power inductor L1 provides the filtering to the electric power generated by double boosting charge pumps 12.Specifically For, power inductor is configured to carry out the electric power flowed between the sub 22 and RF amplifier supply terminal 36 of pump output terminal Filtering.

9th switch S9 is coupled between voltage source terminal 20 and pump output terminal 22, and the tenth switch S10 is coupled in Between pump output terminal 22 and fixed voltage terminal 24.In an exemplary embodiment, 24 coupling grounding of fixed voltage terminal.The The control terminal of nine switch S9 and the tenth switch S10 is coupled to the control bus 34 of switch controller 32, in some embodiments In, the switch controller is configured to be closed the 9th switch S9 and the tenth switch S10 by alternate sequence temporary selective, To be maintained across the electric current flowing of power inductor L1 in second switch S2 and the 6th switch S6 disconnection.

Feedback input terminal 38 is coupled to RF amplifier supply terminal 36 with by feedback signal V_CC__FBIt is transported to switch control Device 32, in some embodiments, the switch controller be further configured to based on scheduled feedback signal set point and Automatically switch between parallel schema and interleaving mode.

Charge pump tracker circuit 10 further includes parallel amplifier 40, and the parallel amplifier, which has, is coupled to RF amplifier Supply terminal 36 is to receive feedback signal V_CC__FBThe first amplifier input terminal 42.Parallel amplifier 40 further includes for connecing Receive target voltage waveform V_TARGETTarget voltage input terminal 44 and amplifier output terminal 46, it is defeated by the amplifier Terminal is provided as feedback signal V out_CC__FBWith target voltage waveform V_TARGETBetween scaled difference it is enlarged Voltage waveform V_AMP.Amplifier output terminal 46 is coupled to RF amplifier supply terminal 36 by third capacitor C3, and described Three capacitors provide offset voltage to increase enlarged voltage waveform V_AMPDynamic range, to reduce the parallel amplification of supply Maximum voltage needed for device 40, and efficiency is further increased in turn.

11st switch S11 is coupled between amplifier output terminal 46 and fixed voltage terminal 24, the fixed voltage Terminal coupling grounding in this exemplary implementation scheme.The control terminal of 11st switch S11 is coupled to control bus 34.Switch Controller 32 is configured to be closed the 11st switch S11 when deactivating parallel amplifier 40, and is enabling parallel amplifier 40 When disconnect the 11st switch S11.Parallel amplifier 40 is usually enabled during higher electricity needs operation (for example, APT), and And the parallel amplifier is deactivated during lower electricity needs operation (for example, ET).

Fig. 2 is off-state and closure of the first switch under parallel schema and interleaving mode to the 8th switch S1-S8 The exemplary timing chart of state.Although exemplary timing chart depicts 50% working cycles in a parallel mode and in staggeredly mould 100% working cycles under formula, but other embodiments with different working cycles can be operated.Period of time T 0 arrives T8 First switch needed for describing parallel schema is to the off-state and closed state of the 8th switch S1-S8, and period of time T 8 arrives Off-state and closed state of the first switch needed for T16 describes interleaving mode to the 8th switch S1-S8.Referring in Fig. 1 The schematic diagram of the exemplary implementation scheme of charge pump tracker circuit 10 and the timing diagram of Fig. 2, it should be noted that switch controller 32 Second switch S2 and the 6th switch S6 are consistently closed when operating in a parallel mode.In comparison, it should be noted that in staggeredly mould Under formula, switch controller 32 disconnects second switch S2 when being closed the 6th switch S6, and is closed when disconnecting the 6th switch S6 Second switch S2.In a parallel mode, the 9th switch S9 and first switch S1, the 4th switch S4, the 5th switch S5 and the 8th are opened The disconnection and closure for closing S8 match.In addition, in a parallel mode, by voltage source V_BATThe tenth switch S10 is disconnected when boosting. In some embodiments, by voltage source V_BATWhen decompression, the tenth switch of closure.In addition, in a parallel mode, being grasped for APT Make and be closed the 11st switch S11, and disconnects the 11st switch during ET operation.

Under interleaving mode, the 9th switch S9 is remained open during 100% duty-cycle operation, such as the example of Fig. 2 Described in property timing diagram.However, other embodiment party operated under the working cycles other than the working cycles in addition to 100% In case, the 9th switch S9 is disconnected when being closed second switch S2 or the 6th switch S6.By voltage source V_BATThe tenth is disconnected when boosting Switch S10.In some embodiments, by voltage source V_BATWhen decompression, the tenth switch of closure.Under interleaving mode, in APT The 11st switch S11 is closed during operation.However, being operated usually under interleaving mode without using ET.Therefore, under interleaving mode The 11st switch S11 is not turned off.

When (when first switch S1 to the 8th switch S8) is simultaneously switched off, double boosting charge pumps 12 of Fig. 1 are regarded all switches For in high impedance status, also known as HiZ state.In some embodiments, by voltage source V_BATWhen decompression, alternately break Open and close close the 9th switch S9 and the tenth switch S10 with switchable pump output terminal 22 in voltage source V_BATCoupling between ground connection. In addition, pump output node is being equal to V during boost operations when according to parallel mode operation_BATVoltage and twice V_BATBetween alternately.In addition, being pumped at output node terminal 22 during boost operations and when being operated according to interleaving mode Voltage is being equal to V with during second stage in the first stage_BATVoltage and twice of V_BATBetween alternately.It note that and work as When boosting under interleaving mode under 100% working cycles, pump output node terminal 22 does not switch to V_BAT.But 100% Working cycles under first stage under interleaving mode and the second stage be constantly in twice of V_BATVoltage and from It is not at V_BATVoltage.

Fig. 3 is the supply voltage V of single boosting charge pump of the relevant technologies operated under 75% working cycles_CCRelative to The curve graph of direct current (DC) load current.Dotted line indicates typical load slope, and pecked line indicates that the load of worst case is oblique Rate.Specifically, the relevant technologies of the similar circuit structure of the circuit structure of embodiment of graph plots and Fig. 1 of Fig. 3 Type performance, wherein assuming the size doubles of capacitor C1, first switch network 14 operates under 75% working cycles, and There is no second switch networks 26.The curve illustrates can be under the voltage source of 3.4V in the maximum DC load current of 0.7A The lower maximum value for generating 5.5V.Therefore, single boosting charge pump of the relevant technologies when under 75% working cycles operate when The electric power of 3.8W is conveyed under the load of 700m Ω, and the electric power of 4.9W is conveyed under the load of 530m Ω.

In contrast, Fig. 4 is the supply voltage V according to the embodiment of Fig. 1 of interleaving mode operation_CCIt is loaded relative to DC The curve graph of electric current.In Fig. 3, dotted line indicates typical load slope, and pecked line indicates the load slope of worst case.Institute It states curve and illustrates the maximum value that can generate 5.5V under the maximum DC load current of 1.6A under the voltage source of 3.4V.Cause This, double boosting charge pumps 12 of Fig. 1 convey the electricity of 8.8W when operating under 100% working cycles under the load of 800m Ω Power, and under the load of 600m Ω convey 12W electric power.

Fig. 5 is the schematic diagram of the exemplary implementation scheme of charge pump tracker system 48, the charge pump tracker system With the first charge pump tracker circuit 10A for including first couple of boosting charge pump 12A and including second couple of boosting charge pump 12B The second charge pump tracker circuit 10B.First switch controller 32A controls first pair of boosting on the first control bus 34A Charge pump 12A, and second switch controller 32B controls second couple of boosting charge pump 12B on the second control bus 34B.The One switch controller 32A and second switch controller 32B is respectively configured to operate under interleaving mode and be directed to for APT ET operation operates first couple of boosting charge pump 12A and second couple of boosting charge pump 12B in a parallel mode.In addition, at least one In a little embodiments, first switch controller 32A and second switch controller 32B are configured to be led on communication link 50 Letter is with shared data and operational mode status.First couple of boosting charge pump 12A and second couple of boosting charge pump 12B are in structure etc. It is same as the double boosting charge pumps 12 for including in charge pump tracker circuit 10 (Fig. 1).

In addition, the first charge pump tracker circuit 10A further includes receiving feedback signal V_{CCA_FB}The first parallel amplifier 40A.The first parallel amplifier 40A receives target voltage waveform V_TARGET.Third capacitor C3A is to feedback signal V_{CCA_FB}With Target voltage waveform V_TARGETBetween enlarged difference provide offset voltage.

First the 11st switch S11A is coupled between the output and ground connection of the first parallel amplifier 40A.First The control terminal of 11 switch S11A is coupled to the first control bus 34A.First switch controller 32A is configured to deactivating the It is closed first the 11st switch S11A when one parallel amplifier 40A, and breaks when enabling the first parallel amplifier 40A Open first the 11st switch S11A.It is parallel that first is usually enabled during higher electricity needs operation (for example, APT) Amplifier 40A, and first parallel amplifier is deactivated during lower electricity needs operation (for example, ET).

First charge pump tracker circuit 10A further includes being coupled in the sub- 22A of the first pump output terminal and the confession of the first RF amplifier Answer terminal 36A (labeled as V_CCA) between the first power inductor L1A.First power inductor L1A offer rises to by first pair The filtering for the voltage for pressing charge pump 12A to generate.First the 9th switch S9A is coupled in voltage source V_BATWith the first pump output terminal Between 22A, and first the tenth switch S10A is coupled between the sub- 22A of the first pump output terminal and ground connection.First the 9th is opened The control terminal for closing S9A and first the tenth switch S10A is coupled to the first control bus 34A of first switch controller 32A, In some embodiments, the first switch controller is configured to be closed first by alternate sequence temporary selective 9th switch S9A and first the tenth switch S10A, to flow to the first pump from first couple of boosting charge pump 12A in no electric current The electric current flowing of the first power inductor L1A is maintained across when output terminal 22A.

In addition, the second charge pump tracker circuit 10B further includes receiving feedback signal V_{CCB_FB}The second parallel amplifier 40B.The second parallel amplifier 40B receives target voltage waveform V_TARGET.Third capacitor C3B is to feedback signal V_{CCB_FB}With Target voltage waveform V_TARGETBetween enlarged difference provide offset voltage.

Second the 11st switch S11B is coupled between the output and ground connection of the second parallel amplifier 40B.Described second The control terminal of a 11st switch S11B is coupled to the second control bus 34B.Second switch controller 32B is configured to stopping It is closed second the 11st switch S11B when with the second parallel amplifier 40B, and is enabling the second parallel amplifier 40B When disconnect second the 11st switch S11B.Second is usually enabled during higher electricity needs operation (for example, APT) Parallel amplifier 40B, and second parallel amplifier is deactivated during lower electricity needs operation (for example, ET).

Second charge pump tracker circuit 10B further includes being coupled in the sub- 22B of the second pump output terminal and the confession of the 2nd RF amplifier Answer terminal 36B (labeled as V_CCB) between the second power inductor L1B.Second power inductor L1B offer rises to by second pair The filtering for the voltage for pressing charge pump 12B to generate.Second the 9th switch S9B is coupled in voltage source V_BATWith the second pump output terminal Between 22B, and second the tenth switch S10B is coupled between the sub- 22B of the second pump output terminal and ground connection.Second the 9th is opened The control terminal for closing S9B and second the tenth switch S10B is coupled to the second control bus 34B of second switch controller 32B, In some embodiments, the second switch controller is configured to be closed second by alternate sequence temporary selective 9th switch S9B and second the tenth switch S10B, to flow to the second pump from second couple of boosting charge pump 12B in no electric current The electric current flowing of the second power inductor L1B is maintained across when output terminal 22B.

As depicted in Figure 5, the exemplary implementation scheme of charge pump tracker system 48 includes multiple RF power amplifiers PA1, PA2, PA3 and PA4, the multiple RF power amplifier are respectively provided with the first RF input terminal RFI1, the first RF output end RFO1, the 2nd RF input terminal RFI2, the 2nd RF output end RFO2, the 3rd RF input terminal RFI3, the 3rd RF output end RFO3, the 4th RF input terminal RFI4 and the 4th RF output end RFO4.Can by multiple auxiliary switch AS1, AS2, AS3 and AS4 come individually or Transport the electric power from the first charge pump tracker circuit 10A and the second charge pump tracker circuit 10B in combination to supply State multiple power amplifier PA1, PA2, PA3 and PA4.For example, every in multiple auxiliary switch AS1, AS2, AS3 and AS4 One is configured to the supply of at least some of multiple RF amplifier PA1, PA2, PA3 and PA4 RF amplifier selectively Input terminal 52 is coupled to the first RF amplifier supply terminal 36A and the 2nd RF amplifier supply terminal 36B.The multiple auxiliary The auxiliary control terminal 54 of switch AS1, AS2, AS3 and AS4 may be coupled to the control output end of baseband controller (not shown).

Those skilled in the art will appreciate that improvement and modification to the preferred embodiment of the disclosure.All such improvement It is considered as in concept disclosed herein and the scope of the appended claims with modification.