TWI274988B - Adjustable current for voltage regulator with multiple channels - Google Patents

Abstract

A adjustable current for voltage regulator with multiple channels is provided. The adjustable current for voltage regulator with multiple channels includes N set of current control channel, N set of comparison unit and N set of regulation unit. The adjustable current for voltage regulator with multiple channels calculates the current difference between the main current control channel and the other current control channels by comparison unit; then the regulation unit will balance or specify the current of all current control channel in the current for voltage regulator with multiple channels by adjusting the current of all current control channel. Consequently, the frame of adjustable current for voltage regulator can be simplified.

Description

1274988 15343twf.doc/g IX. Description of the Invention: [Technical Field] The present invention relates to a current regulating voltage regulator, and more particularly to a multi-channel current regulation stabilization capable of simultaneously adjusting a plurality of current channels Pressure device. [Prior Art] With the advancement of technology, computers have become an indispensable tool for people, but because the power consumption of the central processing units 'CPUs' is constantly increasing, The DC converter also needs to provide more than 60 amps of current for the computer to use. In general, the multi-channel DC converter provides more motor power than the single-channel DC converter. Efficient. Referring to FIG. 1, a circuit diagram of a balanced current converter using a multi-pass architecture is shown in the prior art. As shown in the figure, this balance 黾ML is converted to include a main converter channel, three parallel converters, and an error amplifier 130. The main converter channel includes a pulse width modulator (PWM). 101, a power converter 1〇5, a filter 109 composed of an inductor, a capacitor 131, a channel current sensing circuit 113 composed of a resistor, and a differential amplifier 117. ^^Two parallel converter channels include subtraction circuits 121~126, 丄VVJT^2 104 5 compensation circuits 127~129, power converters 106~108, =3⁄4 sense of filter, waver 110~112, by The channel current f measured by the resistors f is measured by circuits 114 to U6, and differentially amplified by H 118 to 120. The error is amplified to 130 and the comparison voltage Vref is compared with the average output of the converter 5 1274988 15343twf.doc/g, and the error signal VE/A is output at the wheel end. The reference voltage vREF is increased or decreased as required by the converter. The output of the error amplifier 130 is the input of the main converter channel and the parallel converter channel. The 11-channel channel also includes the input signal v_, which is a fixed ratio change to the output current of the channel to be converted. The main converter channel can be adjusted according to the error signal Ve/a, the duty cycle, and the parallel conversion Hitit can be (4) based on, 曰;; Tiger E/A and input signal VISEN1 to adjust PWM102~104 by the above method, can be The output current of each-group parallel converter through the converter channel is adjusted to the same size. Miao she = to convert $ channel and each group of parallel transfer channels can be based on :: electricity: adjust the output voltage of each channel. When the total return, the wrong v v vE / A will force the converter to earth too k with the output ir and the voltage value. Therefore, the converter, 嗄 = channel == track output value, _ can be flat = flow converter internal control circuit, here four groups of channels: = brother - subtraction circuit 248 ~ 254 two, t ^ ^ 264, ^ PMW^Ai^ is connected to the output of the converter (not shown in the figure) through the feedback path coupling 1274988 15343twf.doc/g in the first wheel-in terminal (10) of the amplification thief 242, which represents the load. The voltage, while the second input 24 of the error amplifier 242 receives the signal VRFE. When the load voltage ν〇υτ of the converter is lower than the reference voltage v, the output terminal 242b of the fault amplification state 242 increases the error signal γΕ/Α, when the load voltage v0UT of the converter is higher than the reference voltage Vrej^ The output 242b of the error amplifier 242 will reduce the error signal Ve/a.

The four sets of channel currents of the converter are individually transmitted through series resistors (not shown) through different current feedback paths 228a to 228d, respectively, and 黾疋VisenSEI~VlSENSE4 are respectively sent to the control circuit. . The summing circuit 244 sums the four sets of voltages VISENSE1 VV ISENSE4 described above, and then transmits the result to the dividing circuit 246 for division to obtain the average value Vaverage of the summed signals, which are respectively transmitted from the output end to the output circuit The first subtraction circuits 248 to 254 are included. After that, the feedback voltage VisENSE of the mother channel is respectively calculated with the average value, and then the obtained difference result is transmitted to the compensation circuits G1 G G4 in the channel, and the compensation circuits G1 G G4 will again set each group. After the calculated voltage required for the channel is calculated, it is sent to the second subtraction circuits 258 to 264, and compared with the error signal VE/A, and the obtained result is transmitted to the PWM amplifiers 268 to 274, and then through the PWM amplifier. The processing of 268~274 can adjust the current of each group of channels to achieve the purpose of balancing current. According to the above steps, as an embodiment, when the converter is in operation, if the voltage VISENSE1 of the current feedback path 228a in the channel is higher than the voltage average Vaverage calculated by the dividing circuit 246, the voltage 7 1274988 15343twf .doc/g

After the first subtraction of VlSENSEl and Vaverage, a calculation comparison within the positive current value Δΐι 48 is generated to the second subtraction circuit 258. The electric value ΔΙ! will also transmit the error signal 电 电 ! 】 】 258 258 258 258 258 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 242 'To reduce the pulse width of the output p side will also be _ 卩 = this;; the amplifier (10) flow source will be reduced, so that the average value of the communication signal is V_age. The heart (4) will be closer to the sum of the electric ΪΛ 'When the turn: win, if the current in the channel is in the feedback path, the UV 1 is calculated by the material t (丨) the step of the f flow value δι generated by the average subtraction circuit' That is, the current value in the channel can be increased so that the voltage value of the pass-through signal is closer to the level of the summed signal. The above-mentioned right implementation of the current can effectively adjust and balance the current value in each group of channels, to the function of driving a specific load, but the internal structure of the current type converter can be very complicated by the above description. Moreover, each group of current channels in the converter also needs a considerable number of active and passive elements to work together to effectively achieve the goal of balancing current, but the noisy circuit design method is not in line with economic costs. The circuit design method that the circuit developers want. 1. SUMMARY OF THE INVENTION The object of the present invention is to provide a multi-channel current adjustment voltage regulation 1274988 15343 twf.d 〇〇 / g ί control channel electrical adjustment per _ control channel current value two special mother-group The purpose of the current control channel current. K-balance or pressure crying ^ The purpose is to provide a multi-channel current adjustment of the production of the current adjustment of the current regulator: = through the current method to achieve drunk or special depending on the load current of the load": 'More current, to maintain the multi-channel electric furnace two current control to maintain the wheel voltage of the reference voltage reducer provided. = The main current control channel in the multi-channel current comparison circuit proposed by the present invention 'When it is different, the difference or the resistance value is different, compare the voltage=the current difference of the current control channel to adjust the current of each group and compare the current or the current of each specific group of current control channels. The value 'is adjusted to the level of the load current according to the load, and can also be forced to 'current' to maintain multi-channel current regulation = mother-group current control to maintain the same as the load current. The above-described and other objects of the present invention can be understood from the above-described and other embodiments of the present invention, and the features and advantages will be more apparent. The multi-channel electric gentleman feature proposed by the present invention is a comparator for comparing current or electricity, and the maximum mode thereof depends on the current sensor 127. /g resistance value to find the main current control channel in the circuit and compare the knots, please refer to ^ 3, 阙 current. Channel current adjustment = 7 kinds of multi-pass proposed: ====, one::, - wheel =, out ': two =: input, right to current control channel 3〇1 301a, second round of human end The secret electric dance,", the first input and the second output is 301c. If: 2: the first round of the brother is the end of the first round of the wheel is 3〇3a, and the second channel 303 is explained, the output is the trace and the second is coupled to the voltage source (10) 2, the first flow control channel 305 and 3^S=3G3e. The other two in the illustration are the same. In the embodiment, the multi-channel mine 353, 355 and the former fan of the m-speaker, the output of the 357 and 359 are the taxis: =, each of which - Group current control channel ^ ^ t ^ ^ ^ ^ ΝΓΐ 8 ΕΝ 2 " 10 Ι 27 «8 twf.doc / g and ISEN4, and each -_ stream channel will vary according to the size of the adjustment current generated by itself The adjustment voltages VSEN1, VSEN2, VSEN3, and VSEN4 are output from the first output terminals 301b, 303b, 305b' and 3〇7b. In addition, the fast-flow control channel will also rotate each set of adjustment currents ISEN1, ISEN2, ISEN3, and isen4 via current sensors 317~323.

After being replaced by the adjustment voltage, the first output terminals 3〇lb, 3〇3b, 3〇5b, and 307b, and the second output terminals 3〇ic, 3〇3c, 305c, and 307c are respectively output, The output terminals 3〇lc~3〇7c four outputs are connected in _ to add up to four sets of adjustment currents, and provide a stable load current of the load 393 coupled to the multi-channel current conversion regulator. In the present embodiment, a set of filter regulator capacitors 391 is connected in parallel with the load 393. Wherein, in the above four sets of current control channels, the current control channel 301 is set as the main current control channel, and the second input terminals 353a, 355a, 357a, and 359a of each group of comparison units are simultaneously received by the main current control channel. The output adjustment voltage VSEN1. And the third of the comparison unit

The input terminals respectively receive the adjustment voltages output by the different current control channels. In this embodiment, the third input terminal 353b receives VSEN1, the third input terminal 355b receives VSEN2, and the third input terminal 357b receives VSEN3. 35% of the three inputs receive VSEN4. Each comparison unit performs arithmetic processing according to the two sets of adjustment signals received by the second round input end and the third input, to obtain the difference between the two sets of signals, and then the third output end 353 c, 355 respectively. c, 357 c, and 359 c output an error signal. In this embodiment, the comparison unit 1274988 15343twf.doc/g can use the subtraction operation to obtain two sets of signals 371. The adjustment current device further includes four sets of adjustment unit four input terminals: the fifth two ^ Enter the 鳊, and the fourth output. If the adjustment unit m ', the fourth input is 371b, the fifth input is 371a, and the fourth output is 371e. In the figure, the other three sets of adjustment units MW,

And 377, the access is the same as the previous design. The fourth input of each of the #1 grouping units is coupled to the second output of the different early stage to receive different error signals. For example, the second round end 35 of the two unit 353 is coupled to the adjustment unit π four input 371b.

Can be the difference of a set of subtractors. In addition, the fifth input of each group of adjustment units receives the same ?=a reference voltage'. The drive reference voltage is the = port of the aforementioned current control channel. Input ^ part of the voltage of the drive reference voltage received, after that. According to the error received by the fourth input terminal, the adjustment of the driving tea test signal received by the fifth input terminal is adjusted. Finally, the final test voltage of the adjustment = is output from the fourth output terminal and transmitted. To the first input of the current control, 逞, so that the current control channel can adjust the voltage outputted by the second output according to the final white=dynamic reference voltage. Alternatively, the adjustment unit in this embodiment may be a buffer. In the coupling relationship mentioned by Shishi, each group of adjustment units receives the t-limit! ^ Tiger, the reference signal, and the reference signal output from the output end thereof are corresponding to the same set of current control. aisle. For example, comparing the third wheel end 35 of the single 12 1274988 15343 twf.doc/g 兀355 is coupled to the second output end of the current control channel 3〇3, when the adjustment unit 373 receives the comparison Lose the wrong money number and the reference of the fifth loser to receive it. After the 5th week of the operation, the ginseng tiger that is output by the fourth output 373c will be recoupled to the original comparison. The third input of unit 355 shifts the first input 303a of the current controlled channel 3〇3. In addition, in the present embodiment, the current control channels 3〇1 to 3〇7 are more accommodating and correcting, and the Japanese is composed of a current control circuit and a channel current sensing circuit. The current control channel 3G shown in the figure is composed of a current clamp circuit 309 and a channel current sense circuit 317 group = track / 3 is controlled by the current control circuit 311 and channel currents j, ,,,, and The current control channel 305 is composed of a current control circuit 313 and a current sensing circuit 321 , and the current control channel 3 ( ) 7 is composed of an electric k control steer 3 丨 5 and a channel current sensing circuit 323 . In this embodiment, the current control circuits 309, 311, 313, and 3 are composed of a power type gold oxide half field effect transistor, and the first source/source end faces of the power type gold field effect transistor are different. Voltage source J14, the gate terminal is the first input terminal of the current control channel, and the boundary source and the junction surface are connected to the current sensing circuit and the output adjustment current is in the real control. The channel current sensing circuit is composed of the resistor. The device is made up, the source is connected to the second end of the power-type gold-oxygen half-field transistor, and the second is the resistor. Since the driving reference voltage is received from the gate terminal of the power MOS field effect transistor, 13 13 274 twf.doc / g, the power type MOS half field effect voltage will be connected with the gate terminal: :: The output of the adjustment amplifier, the operation of the regulator, including the negative input terminal receiving load work: the round-ended receiving - reference voltage vR 'output is negative power-up f " Among the amplifiers, the test voltage received by the positive input terminal. Its working power (four) is high, (four) 妓, to carry the required. Conversely, if the load household needs = VR setting value can be relatively increased. The setting can be relatively low. When the recording is low, the reference voltage of the working channel of the electric S VR is working, when the reference voltage of the input end of the load is 2; the steady load voltage of the received voltage is greater than the driving reference voltage of the positive output 35, γ The device will automatically reduce the current when the output current is large, and reduce the current from g Τ. Conversely, if the reference load received by the input of the load is less than the positive output of the drive, the test will be automatically adjusted (4) to automatically adjust the high output channel current adjustment and then adjust the current. In this way, the load voltage will be limited to the dynamic view of Table 2 to maintain stability below the specific range of electricity (4) 敕i, near VR. The operation of this circuit has changed the signal of each single (four) of r Erling, indicating that the circuit of the circuit is the implementation of the circuit, the current sense reference voltage of the slave channel is the phase (five) and the drive of the operational amplifier 395 is turned on. The current control circuit 3〇9~315 14 I274»doc/g power type gold gas half field effect transistors are not matched, so when the current control circuits 309~315 receive the same reference signal, they will output four different sets of adjustments. Currents ISEN1 to ISEN4, assuming that the magnitude relationship between the four sets of trimming currents is ISEN2 is less than ISE]Sn, ISEN3 is greater than ISEN1, and ISEN4 is greater than ISEN1' so VSEN2 is less than VSEN1, VSEN3 is greater than VSEN1, and VSEN4 is greater than VSEN1. According to the above result, after the comparison operation by the comparison unit, the error signal output by the comparison unit 355 will be a positive value, and the error signal output by the comparison unit 357, 359 will be a negative value, and because the comparison unit Μ] The signals received by the two inputs are the same, so the error of the output is . The adjustment unit adjusts the fourth input: the drive reference signal received by the input terminal according to the received signal. For example, π 敕 ^ ^ early 371 connected (four) error position is zero, so no, the younger five loses the reference signal received by the terminal 371a. The error signal received by the adjustment unit #3773?1?7 is a negative value, so the fifth input 1 375^=the received reference signal is turned on, and then the fourth output terminal Μ the reference signal. The adjustment unit 373 receives the φ, so that the f received by the fifth input terminal 373a is raised, and then the (four) read terminal 373_ outputs the reference signal system ir» by the above adjustment process / one ~ ^ · 卩 can The three sets of current control pass through the phase π, the cycle is integrated with the main current control channel 301; = the same as the 'Drunk balance purely fixed line' with the four-channel current control channel as an example, 1274^Mu 〇c/g artists can also use this multi-channel current control channel. ^5 week whole regulator application to the above, according to the present invention, the voltage regulator is first compared with the multi-channel current adjustment ^ channel current adjustment of the steady channel current and other current control channel two:: The main current control = the result of the later wire is difficult to reuse. In addition, the current continues to increase the current load in the control channel of the crying machine. The adjustment circuit ^51 can be based on the stability of the load. Multi-channel electric two complex # circuit secret to design a circuit to balance the channel current. Ζ ί ί ί ί ( 四 已 ί ί ί 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已The scope of the lecture is to define the scale of the patent application. ...also [Simplified Schematic] FIG. 1 is a circuit diagram of a constant current converter using a multi-channel architecture in the prior art. 2 is a circuit diagram of another balanced current converter using a multi-channel architecture in the prior art. 3 is a road diagram of a current regulator in accordance with the present invention. [Main component symbol description] 16

1274§3§t§,d0c/g

101 to 104: PWM 105 to 108: power converters 109 to 112 · filter (inductor) 113 to 116: channel current sensing circuits 117 to 120: differential amplifiers 121 to 126: subtraction circuits 127 to 129: compensation Circuits 130, 242: error amplifier 131: capacitors 228a to 228d: current feedback path 232f: first input 242a: second input 242b: output 244: summing circuit 246: division circuit 248~254: first subtraction Circuits 258 to 264: second subtraction circuits 268 to 274: PMW amplifiers 301 to 307: current control channels 301a to 301c, 303a to 303c, 305a to 305c, 307a to 307c, ·input/input 戚Π*, one I , 309 to 315 : current control circuits 317 to 323 : channel current sensing circuits 353 to 359 : comparison unit 17 I274mdoc / g 353a to 353c, 355a to 355c, 357a to 357c, 359a to 359c: output / input terminal 371 to 377 : adjustment units 371a to 371c, 373a to 373c, 375a to 375c, 377a to 377c: output/input

ISEN1~ISEN4: Adjust current VSEN1~VSEN4: Adjust voltage G1~G4: Compensation circuit Vccl~Vcc4: Voltage source VE/A: Error amplifier output ViSENl: Input voltage ViSENSEl~VlSENSE4: Feedback voltage V0UT: Load voltage vR: Reference voltage Vref: reference electric dust 18

Claims (1)

1274§3§^f.d0c/g X. Patent application scope ·· 1. A multi-channel current catering load current 'The multi-channel current is negative N group current control channel, $ _ - input, - Two losses: end mother: system channel has - the first:: two "Γ independent drive reference voltage size and adjust from. Xuantu output and output _ adjust the independent voltage source, the second round out to the younger - lose The person (4) is connected to a ΐ Γ Γ ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 该 该 ! 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该'Main:=, and a third output terminal', the third input terminal outputs the adjustment voltage by the current control channel of the second field, and the fourth adjustment voltage is used for each of the money; After performing the operation processing, (4) the voltage signal received by the ^= field and an output ^ output an error signal; the N group adjustment unit, each terminal, the sixth input terminal, and the "the =: early element" Has a fifth input received from the corresponding single... two, the round end 'the fifth input terminal , uπ — Hai some iron difference signal, the sixth input 媳 pile differential reference voltage 'The adjustment unit is based on the received: After, the _ four output terminal outputs the independent driving reference voltage to the corresponding 19 12749 The touch (4) received by the first integral unit of the current control channels of the paper twf.d〇c/g is monthly/'where each of the adjustments and the independent drive reference electric & Corresponding to one of the same current control channels. Two = load current is formed by adding these adjustments 5, 丄N horse is greater than a positive integer of 荨2. The multi-channel current adjustment voltage regulation β described in the first paragraph of the patent scope is: wherein the current control channel comprises: a mountain turbulence i air circuit, the current control circuit has a seventh input wheel 3, and a a sixth output end, the seventh input end is coupled to the second and second wide, the eighth input end is the first input of the current control channel and the output end is the first output end of the current control channel, 7 "Hai 8th round of the input according to the size of the drive reference voltage received from the "Hai / / output output of the adjustment voltage; and the mountain - pass circuit, with - the ninth input and - The seventh output terminal is coupled to the sixth output end, and outputs the adjustment current from the output end of the seventh wheel according to the size of the received tail. 3. The multi-channel current-regulating regulator according to item 2, wherein the current control circuit is a transistor. Rr / H patent off the third paragraph of the multi-channel current adjustment stability t two: electricity / 曰 system - power type gold oxygen half-field effect transistor, the power type to oxygen half j: 暴特雁雷曰电日日The first source/end of the body is the seventh end of the second end, and the second source end is the sixth output end. — Screen crying ϋ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多 多. Thick crying (4) The multi-pass 34-flow adjustment described in item 1 is stable. = = The current is controlled by the current control channel. The change in the value of the sea = parameter is a positive correlation. Wide. ttPlease apply the multi-channel current trimming material described in item 1 of the patent range,) 'to output the common drive inverter, multi-channel current adjustment stability = one of the negative-level operation of the operational amplifier to convert the load voltage . 4. After the load is loaded, 9. For example, if the stable load n is wide-current-adjusted, the stable processor relatively lowers the secret tea test voltage, 'the operation is difficult, ^8 sales (four) road When the current adjustment calculation processor relatively raises the reference voltage, the operation value of the operation is as follows. Stabilize the waste device, shoot the reference ^ 8 Yun Xu multi-channel surface adjustment of the stable n-axis connection - 贞 ^ small system according to the material channel current adjustment to apply for special (four) (four) i regulator, which compare single ~ yuan # - = The multi-channel current adjustment method described above. A subtractor, the arithmetic processing is a brick ★ Declaring the current regulator described in the first paragraph of the patent, wherein the reading 21 I2749§§3twf.d〇c/g adjusting unit is a buffer. 14·Two kinds of multi-channel current adjustment voltage regulators, including: - Operational amplifiers, used to rotate the common drive operation to amplify r positive wheel human input and output voltage, bribe calculation device ^ negative input terminal for receiving a stable load voltage; N sets of current control channels 'per-these current control A current control circuit has a first-input terminal, a second-wheeled and a f-wheel-out terminal, and the first input terminal ♦ is connected to a single voltage source, and the second input terminal is coupled to the independent one. a driving reference voltage, the first output system is configured to output an adjustment voltage according to the small driving reference voltage received by the second input terminal; and the earth pass anti-private machine detecting circuit has a third wheel-in terminal And a second output terminal, the third input terminal reduces the magnitude of the adjustment voltage received by the current control circuit from the second output: Wherein, the current control channels have a current control channel; a system is set as a master N, and the comparison unit includes a fourth terminal input terminal, a fifth input terminal, and a third output terminal, each of which Comparing the fourth round of the unit to receive the adjusted voltage that is rotated by the main current control channel, and each of the earlier fifth input thorns receives the adjusted voltage, each of the After the comparison unit performs an operation process according to the received voltage signal, an error signal is rotated by the third output end; N sets of adjustment units, each of the adjustment units have a sixth round entry 22 1274 requiring 3 twf.doc/ g end, a first input end, and a fourth round (four), each of the six input terminals of the unit receives the common drive 2 early, the seventh input end receives from the private ratio of the library - eight "adjacent signal adjustment After receiving the common driving reference power and the voltage value, the second input end of the current control circuit from the first electric dust f: the error signal received by the whole unit , out of =, the corresponding to the same The current control is through its r in!: the eighth round input end and the - fifth round output end, the eighth current control channel receives the five output turns and is coupled to the power ground; the hair pole, the child The 疋 load current is received by the negative input of the 敫 敫 “ ; 而成 ; 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该A positive integer equal to 2. For example, the application of the patent scope of the 14th 械 夕 、, s,,, regulator, foot (four) + * (four) 权 夕 通 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱 钱The multi-channel current adjustment mentioned in the 15th item of the release pressure crying patent range 〇〇 〇〇 电 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该The h end is the first output. ~—ϋ二输入端'Second source/no end is the multi-channel current adjustment mentioned in item 14 of the first transmission regulation range, and the adjustment voltage of the current-controlled current channel is 23 I2749§ § 3twfd 〇 ^ size 4 test voltage size change system - positive correlation changes. The regulator, == range of $14, the multi-channel current adjustment of the tube, the middle § the stable load voltage is greater than the reference Ray 厌 0 士, w 4 processor relatively lower the common drive reference tube. . . Wherein the stable load voltage is less than the reference opening, and the electric drive reference voltage is increased to increase the power of the common drive reference voltage as described in claim 14 of the patent application scope, wherein the reference voltage is based on the load; = apply for her transport; / the comparison unit is a subtractor 'the arithmetic processing system is a subtractive dance crying her® channel 14 current adjustment sturdy earth σ, with the channel current sensing circuit A resistor.斤? 3·, the channel current adjustment according to item 14 of the patent application scope is stable, wherein the adjustment unit is a buffer. , *=·—a multi-channel current-regulating regulator for outputting a stable load current. The multi-channel current regulator includes a set of current control channels, each of which receives an independent drive. The reference voltage is adjusted according to the size of the independent driving reference voltage, and each of the current control channels is further coupled to an independent voltage source, and the output is converted into an adjusted voltage according to the magnitude of the adjusted current, wherein One of the current control channels is set as a main current control channel; 24 twf.doc/g j2749S^ channel circumference = the comparison units receive the main current control channel, and respectively receive the current control The signal is fined and adjusted according to the received power group 4: after the processing, the output error signal is separately; and the comparison unit iHZ: the axis difficult unit (4) receives the corresponding waste, the adjustment order, and Wei - Commonly, the reference power of the common drive wire, the error signal drum touches the received pressure, and then the voltage value of the ^^ is formed to form a vertical drive reference electrical channel, In: Lai to a corresponding reference current of the plurality of control and independence of the output of the error signal to produce a channel of which -; Le > corresponding to the same test voltage lines of the plurality of current control 25