Adaptive voltage regulation and control circuit

Abstract

The invention discloses an adaptive voltage regulation and control circuit. The adaptive voltage regulation and control circuit comprises a plurality of driving circuits and a voltage control circuit. The first one of the plurality of driving circuits outputs a feedback signal to the next one according to the data of the connected load. Each of the plurality of driving circuits except the first and last one outputs a next feedback signal to the next feedback signal according to the data of the connected load and the feedback signal received from the previous one. The last one of the plurality of driving circuits outputs a power supply indication signal according to the data of the connected load and the feedback signal received from the last one. The voltage control circuit outputs a common modulation power signal to a plurality of loads according to the power supply indication signal.

Description

TECHNICAL FIELD

[0001] The present invention relates to a voltage regulating circuit, in particular, to an adaptive voltage regulating circuit. BACKGROUND

[0002] In people's daily life, light emitting components such as Light-Emitting Diodes (LEDs) are widely used in various commodities, such as traffic signs, tail lights, head lights, street lights, computer indicator lights, flashlights, backlights of display devices, etc.

[0003] Based on the requirements of some applications, in the light emitting circuit, multiple groups of light strings are often arranged, each group of light strings is connected by multiple light emitting components such as LEDs in series. These multiple groups of light strings are respectively detected and driven by multiple driving circuits, and are simultaneously powered by a single power supply circuit.

[0004] However, when the power of any one or more of the multiple groups of light strings is insufficient, the power supply circuit will simultaneously supply the same power to the multiple groups of light strings, but the power exceeds the required power of some light strings or is less than the required power of some light strings, which will cause the light string not to emit light with the expected brightness, and the light emitting components with smaller voltage resistance that obtain excessive power will overheat and burn out. SUMMARY

[0005] In view of the deficiencies of the prior art, the present invention provides an adaptive voltage regulating circuit. The adaptive voltage regulating circuit of the present invention comprises multiple driving circuits and a voltage control circuit. The multiple driving circuits are arranged in series. The multiple driving circuits are respectively connected to multiple loads. The first one of the multiple driving circuits outputs a feedback signal to the next driving circuit according to the data of the connected load. Each of the multiple driving circuits except the first one and the last one outputs the next feedback signal to the next driving circuit according to the data of the connected load and the feedback signal received from the previous driving circuit. The last one of the multiple driving circuits outputs a power supply indication signal according to the data of the connected load and the feedback signal received from the previous driving circuit. The voltage control circuit is connected to each of the driving circuits and the multiple loads. The voltage control circuit is configured to set a common modulation power signal according to the power supply indication signal and output the common modulation power signal to each of the loads.

[0006] In addition, the present application provides an adaptive voltage regulating circuit. The adaptive voltage regulating circuit comprises a plurality of driving circuits and a master control circuit. The plurality of driving circuits are sequentially arranged in series. Each of the plurality of driving circuits is connected to a plurality of loads. The first driving circuit of the plurality of driving circuits outputs a feedback signal to the next driving circuit according to data of the connected loads. Each of the driving circuits, except the first and the last, outputs a next feedback signal to the next driving circuit according to the data of the connected loads and the feedback signal received from the previous driving circuit. The last driving circuit outputs a power supply indication signal according to the data of the connected loads and the feedback signal received from the previous driving circuit. The master control circuit is connected to each of the driving circuits and the plurality of loads. The master control circuit outputs a master signal to the first driving circuit of the plurality of driving circuits. Each of the driving circuits, except the last, transmits the master signal received from the previous driving circuit to the next driving circuit. The master control circuit outputs a common modulated power signal to each of the loads according to the power supply indication signal.

[0007] As mentioned above, the present application provides an adaptive voltage regulating circuit. Each of the driving circuits, except the last, of the adaptive voltage regulating circuit outputs a feedback signal to the next according to data (including capacity) of the connected loads (e.g. a string of lights). In particular, the last driving circuit outputs a power supply indication signal according to data of the connected loads and data of the plurality of loads driven by the other driving circuits received from the previous driving circuit. Thus, the adaptive voltage regulating circuit of the present application can supply the most appropriate amount of power to the plurality of loads at the same time.

[0008] For further understanding of the features and technical contents of the present application, the following detailed description of the present application and the attached drawings are referred. However, the drawings are provided for reference and illustration only, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 A block diagram of an adaptive voltage regulating circuit of a first embodiment of the present application.

[0010] Figure 2 A block diagram of an adaptive voltage regulating circuit of a second embodiment of the present application.

[0011] Figure 3 A block diagram of an adaptive voltage regulating circuit of a third embodiment of the present application.

[0012] Figure 4A block diagram of an adaptive voltage regulating circuit according to a fourth embodiment of the present invention.

[0013] Figure 5 A diagram of operation values of a last one of a plurality of drive circuits included in an adaptive voltage regulating circuit according to a fifth embodiment of the present invention. DETAILED DESCRIPTION

[0014] The advantages and effects of the present invention can be understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different embodiments, and various modifications and changes can be made to the details based on different views and applications without departing from the spirit and scope of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not drawn to scale. The following embodiments will further illustrate the related technical content of the present invention, but the disclosed content is not intended to limit the scope of protection of the present invention. In addition, the term "or" used herein can include any one or more combinations of the associated listed items as appropriate.

[0015] Referring to Figure 1 , a block diagram of an adaptive voltage regulating circuit according to a first embodiment of the present invention.

[0016] As shown in Figure 1 , in the first embodiment, the adaptive voltage regulating circuit of the present invention includes a plurality of drive circuits DRV1 to DRVn and a voltage control circuit CTR.

[0017] The plurality of drive circuits DRV1 to DRVn are arranged in series. The number and arrangement order of the plurality of drive circuits DRV1 to DRVn can depend on actual requirements, and the present invention is not limited thereto.

[0018] Each of the plurality of drive circuits DRV1 to DRVn can have a signal output terminal. Each of the plurality of drive circuits DRV1 to DRVn except the first one can have a signal input terminal connected to the signal output terminal of the one arranged therebefore. For example, the signal input terminal of the second drive circuit DRV2 of the plurality of drive circuits DRV1 to DRVn is connected to the signal output terminal of the one / first drive circuit DRV1, the third drive circuit DRV3 of the plurality of drive circuits DRV1 to DRVn is connected to the one / second drive circuit DRV2, and so on.

[0019] Each of the plurality of drive circuits DRV1 to DRVn can further have a drive output terminal. The plurality of drive output terminals of the plurality of drive circuits DRV1 to DRVn are respectively connected to the plurality of drive terminals or the plurality of control terminals of the plurality of loads LD1 to LDn.

[0020] It is worth noting that only the last arranged drive circuit DRVn of the plurality of drive circuits DRV1 to DRVn is connected to a signal input terminal of the voltage control circuit CTR. A power output terminal of the voltage control circuit CTR is connected to the plurality of loads LD1 to LDn (the plurality of first terminals, the plurality of power input terminals, or a common connection point, respectively).

[0021] The first arranged drive circuit DRV1 of the plurality of drive circuits DRV1 to DRVn outputs a feedback signal FB1 to the next arranged drive circuit DRV2 according to the data DL1 of the connected load LD1.

[0022] Each of the drive circuits DRV2 to DRn-1 of the plurality of drive circuits DRV1 to DRVn, except for the first arranged drive circuit DRV1 and the last arranged drive circuit DRVn, respectively outputs the next feedback signal FB2 to FBn-1 to the next drive circuit DRV3 to DRn according to the data DL2 to DLn-1 of the connected load LD2 to LDn-1 and the feedback signal FB1 to FBn-2 received from the previous drive circuit.

[0023] That is, the drive circuit DRV2 outputs a feedback signal FB2 to the next drive circuit DRV3 according to the data DL2 of the connected load LD2 and a feedback signal FB1 received from the previous drive circuit DRV1. The drive circuit DRV3 outputs a feedback signal FB3 to the next drive circuit DRV4 according to the data DL3 of the connected load LD3 and a feedback signal FB2 received from the previous drive circuit DRV2.

[0024] The plurality of drive circuits DRV1 to DRVn can respectively set or obtain a plurality of reference data, and can compare the data DL1 to DLn of the connected loads LD1 to LDn with the plurality of reference data to respectively generate a plurality of comparison results. For example, each of the data DL1 to DLn of the loads LD1 to LDn can include a voltage, and each of the reference data can include a voltage threshold value. It is only an example, and the present application is not limited thereto.

[0025] The first of the plurality of drive circuits DRV1 to DRVn can output a feedback signal FB1 to the next drive circuit DRV2 according to a generated comparison result.

[0026] Each of the driving circuits DRV2 to DRVn-1, except the first and the last one, i.e. the driving circuits DRV2 to DRVn-1, can respectively output a next feedback signal FB2 to FBn-1 to the next one of the driving circuits DRV3 to DRVn, according to the comparison result and the feedback signal FB1 to FBn-2 received from the previous one of the driving circuits DRV1 to DRVn-2. For example, the driving circuit DRV21 can output a next feedback signal FB2 to the next driving circuit DRV3, according to the comparison result generated by itself and the feedback signal FB1 received from the driving circuit DRV1.

[0027] It is noted that only the driving circuit DRVn, which is arranged at the last one of the driving circuits DRV1 to DRVn, has a signal input terminal connected to a signal input terminal of the voltage control circuit CTR, instead of each of the driving circuits DRV1 to DRVn being connected to the voltage control circuit CTR. Further, a power output terminal of the voltage control circuit CTR of the adaptive voltage regulation circuit is connected to the loads LD1 to LDn.

[0028] It is noted that only the driving circuit DRVn, which is arranged at the last one of the driving circuits DRV1 to DRVn, outputs a power supply instruction signal FBCM according to the data DLn of the connected load LDn and the feedback signal FBn-1 received from the previous driving circuit DRVn-1.

[0029] The feedback signal FBn-1 received by the driving circuit DRVn, which is arranged at the last one of the driving circuits DRV1 to DRVn, from the previous driving circuit DRVn-1, can include the data DL1 to DLn-1 of the loads LD1 to LDn-1, respectively (or the comparison results of the data DL1 to DLn-1 with the reference data, respectively).

[0030] That is, the driving circuit DRVn, which is arranged at the last one of the driving circuits DRV1 to DRVn, evaluates a common modulation power (e.g. a common modulation voltage) required by the loads LD1 to LDn according to the data DL1 to DLn of the loads LD1 to LDn, respectively, to output a power supply instruction signal FBCM.

[0031] For example, the last drive circuit DRVn among the plurality of drive circuits DRV1-DRVn can count a number of the plurality of data DLI-DLn (including voltages) of the plurality of loads LD1-LDn that are greater than a reference data (including a voltage threshold) as a count value based on the data DLn of the load LDn connected thereto and the feedback signal FBn-1 received from the drive circuit DRVn-1 arranged therebefore, and output a power supply instruction signal FBCM.

[0032] The last drive circuit DRVn among the plurality of drive circuits DRV1-DRVn can not count / maintain the current count value when the data DLI-DLn (including voltages) of any of the plurality of loads LD1-LDn is greater than a reference data (including a voltage threshold).

[0033] Conversely, the last drive circuit DRVn among the plurality of drive circuits DRV1-DRVn can count up a count value by one when the data DLI-DLn (including voltages) of any of the plurality of loads LD1-LDn is greater than a reference data (including a voltage threshold), to increase the count value by a value such as "1". The number of times of counting up the count value depends on the number of the plurality of data DLI-DLn (including voltages) of the plurality of loads LD1-LDn that are greater than a reference data (including a voltage threshold).

[0034] The last drive circuit DRVn among the plurality of drive circuits DRV1-DRVn can output a power supply instruction signal FBCM based on the count value after the last counting.

[0035] The voltage control circuit CTR can set a common modulation power signal VCH based on the power supply instruction signal FBCM received from the last drive circuit DRVn among the plurality of drive circuits DRV1-DRVn, and output the common modulation power signal VCH to each of the plurality of loads LD1-LDn. The common modulation power signal VCH described herein includes a voltage signal, as a common modulation voltage signal.

[0036] For example, the voltage control circuit CTR can store a plurality of reference count values and a plurality of reference common modulation powers corresponding thereto on a lookup table, and find a reference common modulation power (e.g., a reference voltage) corresponding to a reference count value identical to a count value indicated by a power supply instruction signal FBCM from the lookup table. The voltage control circuit CTR can output a common modulation power signal VCH to each of the plurality of loads LD1-LDn based on the reference common modulation power (e.g., the reference voltage) found.

[0037] After the plurality of loads LD1 to LDn all receive a common modulated power signal VCH from the voltage control circuit CTR, the voltage of each of the plurality of loads LD1 to LDn can be precisely regulated to a target voltage value, reducing the error between the plurality of voltages of the plurality of loads LD1 to LDn respectively, and preventing the plurality of loads LD1 to LDn from overheating and burning out.

[0038] Referring to Figure 2 , which is a block diagram of an adaptive voltage regulation circuit according to a second embodiment of the present application.

[0039] As Figure 2 shown, in the second embodiment, the adaptive voltage regulation circuit according to the present application comprises a plurality of drive circuits DRV1 to DRVn and a voltage control circuit CTR.

[0040] The second embodiment of the present application is the same as the first embodiment, and thus will not be described herein. The differences between the second embodiment of the present application and the first embodiment are described in detail as follows.

[0041] As Figure 2 shown, in the second embodiment, each of the plurality of loads LD1 to LDn can comprise two light emitting components, such as light emitting diodes, for example, the load LD1 comprises light emitting components LA11, LA12, the load LD2 comprises light emitting components LA21, LA22, the load LD3 comprises light emitting components LA31, LA32, and the load LDn comprises light emitting components LAn1, LAn2. In practice, the number of light emitting components comprised in each of the plurality of loads LD1 to LDn can be adjusted according to actual needs, and the light emitting components in each of the plurality of loads LD1 to LDn or any of them can be replaced by other electronic components, without being limited by the present application. Figure 1 As

[0042] The drive circuit DRVn arranged at the last of the plurality of drive circuits DRV1 to DRVn can determine the plurality of modulated powers required by the plurality of loads LD1 to LDn respectively according to the plurality of data DL1 to DLn of the plurality of loads LD1 to LDn respectively. For example, the drive circuit DRVn can select one of the plurality of modulated powers as a minimum common modulated power (such as a common modulated voltage) to output a power supply instruction signal FBCM to each of the plurality of loads LD1 to LDn.

[0043] After outputting a power supply instruction signal FBCM to each of the plurality of loads LD1 to LDn, all of the plurality of loads LD1 to LDn can reach a desired state, but some of the plurality of loads LD1 to LDn can not reach the same desired state due to factors such as different constituent materials, different numbers and configurations of included light-emitting components, and the like. In this case, the other loads need to be further modulated as follows.

[0044] After outputting a power supply instruction signal FBCM to the plurality of loads LD1 to LDn, one or more of the plurality of drive circuits DRV1 to DRVn supply an individually modulated power signal CR1 to CRn to the loads LD1 to LDn connected thereto in accordance with one or more data DL1 to DLn of the respective connected loads LD1 to LDn at the moment. For example, only the drive circuit DRV1 of the plurality of drive circuits DRV1 to DRVn supplies an individually modulated power signal to the load LD1 in accordance with the changed data DL1 of the connected load LD1 after obtaining a power supply instruction signal FBCM, so that the operation (e.g., light-emitting brightness) of the load LD1 reaches a desired state. The individually modulated power signal described herein can include a current signal as an individually modulated current signal.

[0045] Referring to Figure 3 , which is a block diagram of an adaptive voltage regulation circuit of a third embodiment of the present application.

[0046] As shown in Figure 3 , the adaptive voltage regulation circuit of the third embodiment of the present application includes a plurality of drive circuits DRV1 to DRVn and a voltage control circuit CTR, and further includes a master control circuit MAT.

[0047] The third embodiment of the present application is the same as the first and second embodiments, and details thereof are not described herein. The differences between the third embodiment of the present application and the first and second embodiments are described in detail as follows.

[0048] The master control circuit MAT has a master control output terminal. The master control output terminal of the master control circuit MAT is connected to a signal input terminal of the drive circuit DRV1 arranged first among the plurality of drive circuits DRV1 to DRVn. A signal input terminal of each of the drive circuits DRV2 to DRn other than the drive circuit DRV1 arranged first among the plurality of drive circuits DRV1 to DRVn is respectively connected to a signal output terminal of the drive circuit DRV1 to DRVn-1 arranged one position above.

[0049] Each of the plurality of drive circuits DRV1 to DRVn-1 receives a master signal MS from the one received from the previous one and transmits the master signal MS to the next one.

[0050] That is, a master signal outputted from the master circuit MAT is transmitted to the plurality of drive circuits DRV1 to DRVn in turn according to the arrangement order of the plurality of drive circuits DRV1 to DRVn, and each of the drive circuits DRV1 to DRVn operates according to the master signal.

[0051] If necessary, the master circuit MAT can have a synchronization output end, and a synchronization output end of the master circuit MAT can send a synchronization signal Sync to a synchronization receiving end of each of the drive circuits DRV1 to DRVn to synchronize the operating time of the plurality of drive circuits DRV1 to DRVn.

[0052] It should be understood that the number and configuration of the output ends and input ends of the master circuit MAT, the drive circuits DRV1 to DRVn, and the voltage control circuit CTR described herein are only illustrative, and in practice, they can be adjusted according to actual needs, and the present application is not limited thereto.

[0053] Please refer to Figure 4 , which is a block diagram of an adaptive voltage regulation circuit of a fourth embodiment of the present application.

[0054] As shown in Figure 4 , the adaptive voltage regulation circuit of the fourth embodiment of the present application includes a plurality of drive circuits DRV1 to DRVn and a master circuit MAT, but does not include the voltage control circuit CTR as shown in Figure 3 .

[0055] The same parts of the fourth embodiment of the present application as the first to third embodiments are not described herein. The differences between the fourth embodiment of the present application and the first to third embodiments are described in detail as follows.

[0056] As shown in Figure 3 , the operations performed by the voltage control circuit CTR are replaced by the master circuit MAT in the fourth embodiment.

[0057] In the fourth embodiment, a signal output end of the drive circuit DRVn arranged at the last one of the plurality of drive circuits DRV1 to DRVn is connected to a signal input end of the master circuit MAT.

[0058] A signal input terminal of the master control circuit MAT receives a power supply instruction signal FBCM from a signal output terminal of the last one of the plurality of drive circuits DRV1 to DRVn.

[0059] The master control circuit MAT can output a common modulation power signal VCH to each of the plurality of loads LD1 to LDn in accordance with a power supply instruction signal FBCM received from the last one of the plurality of drive circuits DRV1 to DRVn.

[0060] Referring to Figure 5 , which is a diagram of the operation value of the last one of the plurality of drive circuits included in the adaptive voltage regulation circuit of the fifth embodiment of the present application.

[0061] As Figures 1 to 4 , the last one of the plurality of drive circuits DRV1 to DRVn can count the number of loads LD1 to LDn whose voltage is greater than a voltage threshold value in each of the plurality of modulation times in accordance with the data DLn of the connected load LDn and a feedback signal FBn-1 received from the previous one, to output a power supply instruction signal FBCM.

[0062] The last one of the plurality of drive circuits DRV1 to DRVn can count the plurality of such numbers in the plurality of modulation times divided from a modulation time interval, to output a power supply instruction signal FBCM.

[0063] For example, the drive circuit DRVn counts the number of loads LD1 to LDn whose voltage is greater than a voltage threshold value in each of the 10 modulation times T1 to T10 divided from a modulation time interval Tcy as shown in Figure 5

[0064] As Figure 5 shown, the voltage of each of the 10 loads LD1 to LD10 is not greater than a voltage threshold value in the first to third modulation times T1 to T3 divided from a modulation time interval Tcy. Therefore, the count value in each of the first to third modulation times T1 to T3 is 0.

[0065] Next, the voltage of each of the 10 loads LD1 to LD10 is greater than a voltage threshold value in the fourth modulation time T4 divided from a modulation time interval Tcy. Therefore, the count value in the fourth modulation time T4 is 10.

[0066] ​Next, in the fifth modulation time T5 of the ten modulation times T1 to T10 divided in the modulation time interval Tcy, the voltage of eight of the ten loads LD1 to LD10 is greater than a voltage threshold value. Therefore, a count value in the fifth modulation time T5 is eight.

[0067] Next, in the sixth modulation time T6 of the ten modulation times T1 to T10 divided in the modulation time interval Tcy, the voltage of five of the ten loads LD1 to LD10 is greater than a voltage threshold value. Therefore, a count value in the sixth modulation time T6 is five.

[0068] Next, in the seventh modulation time T7 of the ten modulation times T1 to T10 divided in the modulation time interval Tcy, the voltage of two of the ten loads LD1 to LD10 is greater than a voltage threshold value. Therefore, a count value in the seventh modulation time T7 is two.

[0069] Next, in the eighth modulation time T8 of the ten modulation times T1 to T10 divided in the modulation time interval Tcy, the voltage of each of the ten loads LD1 to LD10 is not greater than a voltage threshold value. Therefore, a count value in the tenth modulation time T8 is zero.

[0070] If necessary, the driving circuit DRVn can set different weight values for the count values counted in the modulation times respectively.

[0071] For example, the driving circuit DRVn can set a greater weight value for a number counted in a modulation time having a smaller time difference from a current time point, representing a greater importance or reference value at this time; and set a smaller weight value for a number counted in a modulation time having a greater time difference from a current time point, representing a smaller importance or reference value at this time. The above is only an example, and the present application is not limited thereto.

[0072] The driving circuit DRVn can multiply the modulation time in which a current time point enters or falls and the count values counted in the modulation times before the modulation time by weight values respectively to obtain operation values respectively, and then add the operation values to obtain a weight count total value.

[0073] For example, as shown in FIG. 4, the driving circuit DRVn can set a weight value of 1 for a count value counted in a modulation time having a time difference of 1 from a current time point, and set a weight value of 0.5 for a count value counted in a modulation time having a time difference of 2 from a current time point. Figure 5As shown, when the current time point enters the fourth modulation time T4, the driving circuit DRVn sets the weight value WT4 of the fourth modulation time T4, the weight value WT3 of the third modulation time T3, and the weight value WT2 of the second modulation time T2 as 0.7, 0.2, and 0.1, respectively. Accordingly, the weight value WT4 of the fourth modulation time T4 in which the current time point falls is greater than the weight value WT3 of the third modulation time T3 which has a greater time difference from the current time point. The weight value WT2 of the second modulation time T2 which has a greater time difference from the current time point is greater than the weight value WT3 of the third modulation time T3.

[0074] When the current time point enters the fourth modulation time T4, the driving circuit DRVn samples a count value "0" of the fourth modulation time T4, a count value "10" of the third modulation time T3 before the fourth modulation time T4, and a count value "0" of the second modulation time T2 before the third modulation time T3.

[0075] In the fourth modulation time T4, the driving circuit DRVn multiplies the count value "0" of the second modulation time T2 by the weight value WT2 "0.1" of the second modulation time T2 to obtain an operation value "0", multiplies the count value "0" of the third modulation time T3 by the weight value WT3 "0.2" of the third modulation time T3 to obtain an operation value "0", and multiplies the count value "10" of the fourth modulation time T4 by the weight value WT4 "0.7" of the fourth modulation time T4 to obtain an operation value "7". Then, the driving circuit DRVn adds the three operation values to obtain a weight count total value CNS2 "7". The driving circuit DRVn outputs a common modulation power signal VCH to each of the loads LD1 to LDn according to the weight count total value CNS2 "7".

[0076] When the current time point enters the fifth modulation time T5, the driving circuit DRVn samples a count value "8" of the fifth modulation time T5, a count value "10" of the fourth modulation time T4 before the fifth modulation time T5, and a count value "0" of the third modulation time T3 before the fourth modulation time T4.

[0077] In the fifth modulation time T5, the driving circuit DRVn multiplies a count value "0" of the third modulation time T3 by a weight value WT3 "0.1" of the third modulation time T3 to obtain an operation value "0", multiplies a count value "10" of the fourth modulation time T4 by a weight value WT4 "0.2" of the fourth modulation time T4 to obtain an operation value "2", multiplies a count value "8" of the fifth modulation time T5 by a weight value WT5 "0.7" of the fifth modulation time T5 to obtain an operation value "5.6", and then adds the three operation values to obtain a weight count total value CNS3 "7.6". The driving circuit DRVn outputs a common modulation power signal VCH to each of the loads LD1 to LDn in accordance with the weight count total value CNS3 "7.6".

[0078] When the current time point enters the sixth modulation time T6, the driving circuit DRVn samples a count value "5" of the sixth modulation time T6, a count value "8" of the fifth modulation time T5 preceding the sixth modulation time T6, and a count value "10" of the fourth modulation time T4 further preceding the sixth modulation time T6.

[0079] In the sixth modulation time T6, the driving circuit DRVn multiplies a count value "10" of the fourth modulation time T4 by a weight value WT4 "0.1" of the fourth modulation time T4 to obtain an operation value "1", multiplies a count value "8" of the fifth modulation time T5 by a weight value WT4 "0.2" of the fourth modulation time T4 to obtain an operation value "1.6", multiplies a count value "5" of the sixth modulation time T6 by a weight value WT5 "0.7" of the fifth modulation time T5 to obtain an operation value "3.5", and then adds the three operation values to obtain a weight count total value CNS4 "6.1". The driving circuit DRVn outputs a common modulation power signal VCH to each of the loads LD1 to LDn in accordance with the weight count total value CNS4 "6.1".

[0080] When the current time point enters the seventh modulation time T7, the driving circuit DRVn samples a count value "2" of the seventh modulation time T7, a count value "5" of the sixth modulation time T6 preceding the seventh modulation time T7, and a count value "8" of the fifth modulation time T5 further preceding the seventh modulation time T7.

[0081] In the seventh modulation time T7, the drive circuit DRVn multiplies the count value "8" of the fifth modulation time T5 by the weight value WT5 "0.1" of the fifth modulation time T5 to obtain an operation value "0.8", multiplies the count value "5" of the sixth modulation time T6 by the weight value WT6 "0.2" of the sixth modulation time T6 to obtain an operation value "1", multiplies the count value "2" of the seventh modulation time T7 by the weight value WT7 "0.7" of the seventh modulation time T7 to obtain an operation value "1.4", and then adds the three operation values to obtain a weight count total value CNS5 "3.2". The drive circuit DRVn outputs the common modulation power signal VCH to each of the loads LD1 to LDn according to the weight count total value CNS5 "3.2".

[0082] As mentioned above, the operation values (i.e. the product values of the count values and the weight values) in three modulation times are sampled and added to obtain a weight count total value each time, but the present application is not limited thereto. In practice, the operation values in more or less modulation times can be sampled and more or less operation values can be added to obtain a weight count total value according to actual requirements.

[0083] As mentioned above, the operation values (i.e. the product values of the count values and the weight values) in three modulation times are sampled and added to obtain a weight count total value each time, but the present application is not limited thereto. In practice, the operation values in more or less modulation times can be sampled and more or less operation values can be added to obtain a weight count total value according to actual requirements. Figures 1 to 4 The drive circuit DRVn arranged at the last of the drive circuits DRV1 to DRVn can calculate the weight count total values CNS1 to CNS6 in the modulation times T1 to T6 as shown in FIG. 6, and output the power supply instruction signal FBCM according to each of the weight count total values CNS1 to CNS6. Figure 5 It should be understood that three count values are sampled by the drive circuit DRVn each time in the fifth embodiment, but this is only an example and the present application is not limited thereto. In practice, the number of count values obtained can be increased or decreased according to actual requirements, i.e. more or less count values counted in more or less modulation times can be obtained as the basis for setting the power (e.g. voltage) of the common modulation power signal VCH to provide more appropriate common power to the loads LD1 to LDn to simultaneously modulate the power of the loads LD1 to LDn to be the same as or less than a critical value.

[0084]

[0085] ​In summary, the present application provides an adaptive voltage regulating circuit. Each of the plurality of driving circuits in the adaptive voltage regulating circuit, except the last one, outputs a feedback signal to the next one according to the data (including capacity) of the connected load (e.g. a string of lights). In particular, the last one of the plurality of driving circuits adaptively instructs the voltage control circuit to supply the plurality of loads with the amount of power according to the data of the load it drives and the data of the plurality of loads driven by the other plurality of driving circuits received from the previous one. In this way, the adaptive voltage regulating circuit of the present application is able to supply the most appropriate amount of power to the plurality of loads at the same time.

[0086] The above disclosed is only the preferred embodiment of the present application, and is not intended to limit the claims of the present application. Any equivalent technical changes made according to the content of the present application specification and drawings are included in the claims of the present application.

Claims

1. An adaptive voltage regulation circuit, comprising: The adaptive voltage regulation circuit comprises: a plurality of driving circuits, the plurality of driving circuits are arranged in series, the plurality of driving circuits are respectively connected to a plurality of loads, a first driving circuit of the plurality of driving circuits outputs a feedback signal to a next driving circuit according to data of the connected load, each driving circuit of the plurality of driving circuits, except the first and the last, outputs a next feedback signal to a next driving circuit according to the data of the connected load and the feedback signal received from a previous driving circuit, and a last driving circuit of the plurality of driving circuits outputs a power supply indication signal according to the data of the connected load and the feedback signal received from a previous driving circuit; a voltage control circuit connected to each of the driving circuits and the plurality of loads, configured to set a common modulation power signal according to the power supply indication signal, and output the common modulation power signal to each of the loads. The common modulation power signal comprises a voltage signal.

2. The adaptive voltage regulation circuit of claim 1, wherein, A signal input end of each of the plurality of driving circuits, except the first, is connected to a signal output end of a previous driving circuit, a driving output end of each of the driving circuits is connected to the load, and the signal output end of the last driving circuit of the plurality of driving circuits is connected to a signal input end of the voltage control circuit.

3. The adaptive voltage regulation circuit of claim 1, wherein, A power output end of the voltage control circuit is connected to each of the loads. Each of the driving circuits compares the data of the connected load with a reference data to generate a comparison result.

4. The adaptive voltage regulation circuit of claim 1, wherein, The first driving circuit of the plurality of driving circuits outputs the feedback signal to the next driving circuit according to the comparison result. Each of the driving circuits, except the first and the last, of the plurality of driving circuits outputs the next feedback signal to the next driving circuit according to the comparison result and the feedback signal received from the previous driving circuit. The data of the load comprises a voltage of the load, the reference data comprises a voltage threshold, and each of the driving circuits determines whether the voltage of the connected load is greater than the voltage threshold to set the feedback signal.

5. The adaptive voltage regulation circuit of claim 4, wherein, The last driving circuit of the plurality of driving circuits counts a number of the plurality of loads having the voltage greater than the voltage threshold according to the data of the connected load and the feedback signal received from the previous driving circuit to output the power supply indication signal.

6. The adaptive voltage regulation circuit of claim 5, wherein, The last driving circuit of the plurality of driving circuits counts a plurality of numbers of the number in a plurality of modulation times respectively, and outputs the power supply indication signal according to the plurality of numbers.

7. The adaptive voltage regulation circuit of claim 6, wherein, The last driving circuit of the plurality of driving circuits multiplies the plurality of numbers by a plurality of weight values respectively to output the power supply indication signal.

8. The adaptive voltage regulation circuit of claim 7, wherein, The adaptive voltage regulation circuit further comprises:

9. The adaptive voltage regulation circuit of claim 1, wherein, ​ A master control circuit is connected to the first one of the plurality of driving circuits and configured to output a master signal to the first one of the plurality of driving circuits, each of the plurality of driving circuits other than the last one transmits the master signal received from the previous one of the plurality of driving circuits to the next one of the plurality of driving circuits, and each of the plurality of driving circuits operates according to the master signal.

10. The adaptive voltage regulation circuit of claim 9, wherein, The master control circuit transmits a synchronization signal to each of the plurality of driving circuits.

11. The adaptive voltage regulation circuit of claim 1, wherein, One or more of the plurality of driving circuits supplies an individual modulated power signal to the connected load according to the data of the connected load.

12. The adaptive voltage regulation circuit of claim 11, wherein, The individual modulated power signal comprises a current signal.

13. An adaptive voltage regulation circuit, comprising: The adaptive voltage regulation circuit comprises: A plurality of driving circuits are arranged in series, each of the plurality of driving circuits is connected to a load, the first one of the plurality of driving circuits outputs a feedback signal to the next one of the plurality of driving circuits according to data of the connected load, each of the plurality of driving circuits other than the first one and the last one outputs a next feedback signal to the next one of the plurality of driving circuits according to the data of the connected load and the feedback signal received from the previous one of the plurality of driving circuits, and the last one of the plurality of driving circuits outputs a power supply indication signal according to the data of the connected load and the feedback signal received from the previous one of the plurality of driving circuits. A master control circuit is connected to each of the plurality of driving circuits and the plurality of loads and configured to output a master signal to the first one of the plurality of driving circuits, each of the plurality of driving circuits other than the last one transmits the master signal received from the previous one of the plurality of driving circuits to the next one of the plurality of driving circuits, and the master control circuit outputs a common modulated power signal to each of the plurality of loads according to the power supply indication signal. The common modulated power signal comprises a voltage signal.

14. The adaptive voltage regulation circuit of claim 13, wherein, Each of the plurality of driving circuits compares the data of the connected load with a reference data to generate a comparison result.

15. The adaptive voltage regulation circuit of claim 13, wherein, The first one of the plurality of driving circuits outputs the feedback signal to the next one of the plurality of driving circuits according to the comparison result. Each of the plurality of driving circuits other than the first one and the last one outputs the next feedback signal to the next one of the plurality of driving circuits according to the comparison result and the feedback signal received from the previous one of the plurality of driving circuits. The data of the load comprises a voltage of the load, the reference data comprises a voltage threshold, and each of the plurality of driving circuits determines whether the voltage of the connected load is greater than the voltage threshold to set the feedback signal.

16. The adaptive voltage regulation circuit of claim 15, wherein, The last one of the plurality of driving circuits counts a number of the plurality of loads having the voltage greater than the voltage threshold according to the data of the connected load and the feedback signal received from the previous one to output the power supply indication signal.

17. The adaptive voltage regulation circuit of claim 16, wherein, The last one of the plurality of driving circuits counts a plurality of numbers in a plurality of modulation times respectively to output the power supply indication signal according to the plurality of numbers.

18. The adaptive voltage regulation circuit of claim 17, wherein, ​ 19. The adaptive voltage regulation circuit of claim 18, wherein, The last one of the plurality of driving circuits multiplies the plurality of quantities by a plurality of weight values respectively to output the power supply indication signal.

20. The adaptive voltage regulation circuit of claim 13, wherein, One or more of the plurality of driving circuits supply an individual modulated power signal to the connected load according to the data of the connected load currently.

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