TWM275607U - Voltage-regulator and power supply having current sharing circuit - Google Patents

Description

M275607 generates the amplifier ::: and the constant voltage generating unit 4. The current output is called the positive end of the power supply repeater 1 #, Τδ— between the second and the tender v0 and the ground. The voltage divider of the reference voltage ν2 ^ is connected to the error terminal. Error amplifier 2. The output terminal two =: difference amplifier 2. Negative bracket] connected to the output series transistor 10 blue

According to r body 1—, ‘impedance according to the gate voltage, the transistor 10 is connected in series to supply different current levels to the output end of the voltage regulator 115. Regardless of the load conditions and the turn-on; the change of the voltage ’modulation of the gate voltage can make the regulator output a stable DC voltage. The voltage regulator is 5 with an enable terminal EN, which is used to enable or disable the regulator% to achieve the purpose of power management. For example, when the voltage at which the terminal is enabled is lower than a critical voltage, the regulator 5 will be stopped. For example, the transistor u of the switch is reduced to the enable terminal. Under normal operation, the voltage at the enable terminal EN is pulled up by the resistance% and becomes enabled (high potential). When the voltage at the enable terminal EN is lower than the critical voltage, the transistor 11 will be turned off. When the transistor n is turned off, the series-connected transistor 10 and the error amplifier 20 are turned off via the resistor 35, the transistors 12, 13 and the anti-gates 25, 26. During the shutdown period of the regulator, only a small amount of quiescent current is consumed to save power. Therefore, the enabling terminal becomes the necessary interface to make the regulator meet the requirements of power supply and management. M275607 Streaming signal and generating reference signal according to reference voltage. Bus signal and current detection signal

According to the example of the better example of this creation, the circuit includes a current detection unit, a slave feedback control electric string, and a solar body. 77 is a thief Aif. The current detection element is coupled to the serial connection body, and the input of the detection transistor is equal to the detection signal. Divided voltage_connection ^ Generates electricity 4 The master knows that the output voltage is the feedback voltage. Amplify crying & Ding knife instead produces TO ^ Lightly connect to the voltage divider to receive the feedback voltage, send the negative terminal to receive the test call, and its output terminal outputs the control number to control the power to connect the crystal 0 According to the creation of this It is better to implement Jingshu voltage stabilization, pull up electricity, pull up surplus, money generating unit, wheel output unit 70 and adjustment unit. The pull-up voltage unit generates a pull-up voltage according to a reference voltage. The pull-up resistor is coupled between the pull-up voltage unit and the enable terminal. The current generating unit generates a first current signal and a second current signal according to the current detection signal. The input unit is coupled to the enable terminal and is used to generate a third current signal according to the pull-up voltage and the bus signal. The output unit is coupled to the enable terminal, and is configured to generate a bus signal according to the second current signal and the pull-up voltage. The adjusting unit is coupled to the input unit and the current generating unit, and is configured to generate and adjust the reference signal according to the reference voltage, the first current signal and the third current signal. This creation proposes a voltage regulator with shunt control, which has at least one input terminal, one output terminal, and a uniform energy terminal. Among them, the enabling terminal is used to control whether the enabling is stable 9 M275607 pressure regulator and providing a shunt control interface. The voltage regulator includes a series connected transistor, a feedback control circuit and a shunt control unit. The series-connected transistor has a first terminal, a second terminal, and a second terminal. The first terminal is connected to the input terminal to receive the input voltage. The second terminal is lightly connected to the output terminal to provide the output voltage and output. Current to the wheel output. Feedback = The circuit is lightly connected to the output terminal, and the control signal is adjusted and output according to the reference signal. Connect the third terminal of the transistor to control the output of the voltage regulator. The shunt control unit is light to the enabling end and the feedback control circuit to generate a reference signal and adjust the control signal. This creation proposes a power supply with shunt control, at least one end, one output end, and one shunt end. Power supply cry /, 1 栌 沙雷 was defeated VIII, h includes a turn-out device, feedback

Money out of ^ units. The output device provides the transmission block and the output current to the output terminal and the output terminal. It is used to detect, 'call out the current detection signal, and to control the power supply according to the reference input = output signal to the output_. ^^ The premature pain is connected to the shunt terminal and the feedback control circuit, and is used to generate a reference signal according to the daily knife control signal and the current detection signal. Due to the use of multiple stable and parallel output currents, the output of this publication is reduced, so the output voltage of each voltage regulator is reduced. The output state and output state output the bus signal through the enable terminal. Therefore, each voltage regulator can automatically adjust its output current according to the bus signal of its enable terminal to achieve the purpose of shunting. In order to make the above and other objects, features, and advantages of this creation more comprehensible, the following describes the preferred embodiments in detail with the accompanying drawings as follows. [Implementation] This creation will use the following examples to illustrate the use of the enabler of a power supply (such as a voltage regulator) to achieve the opening and closing voltage regulator and shunt control functions at the same time, familiar with this artist. To other types of power supplies. Fig.-Illustrates a preferred embodiment of a voltage regulator with a shunt control function according to the present invention. Please refer to the second figure, which includes the input terminal IN, such as the terminal OUT and the enable terminal. Among them, the enabling terminal εν is used to control whether to enable the voltage stabilizer and provide an interface for shunt control. The wheel-out split (implemented here, for example, in series with a crystal transistor) receives the wheel-in voltage & of the input terminal IN, and according to the control signal V. Adjust the output voltage V of the regulator. And round out current χ. . Constant voltage generating unit • 40 generates the reference voltage VR1. The feedback control circuit is connected to the output terminal and the transistor 10 in series to detect the wheel current 10 and output the current detection signal Im according to the reference signal VR, and adjust and output the control signal VG to the series transistor 1 according to the reference signal VR. 〇 to control the output of the regulator. The feedback control circuit includes a voltage divider and an amplifier g20. The voltage divider surface is connected to the output terminal OUT, which is used to generate the corresponding feedback power according to the output voltage v. [This knife voltage $ has a resistance and 32 connected in series between the wheel output ουτ and ground. The positive end of the amplifier 20 is connected to the voltage divider to receive the voltage. M275607 I (Receive reference signal). The amplifier 2G outputs a control signal Vg, which is connected to the crystal 1G pin and the regulator regulator. The current detection unit is coupled to 1G′㈣ to generate a corresponding current detection according to the output current ^. Here, for example, the current detection unit is implemented with a transistor 15 and a current mirror is formed by using the transistor 15 and a transistor 1Q in series. The non-pole of μ generates a current detection signal Im corresponding to the wheel current.

The unit 50 is lightly connected to the enabling terminal EN, the constant voltage generating unit 40 and the feedback control circuit, and generates a bus signal Vb according to the current detection signal IM and the reference voltage VR1 and outputs it to the enabling terminal Cong. This bus signal% indicates that the output material is expensive. The branch voltage of MG is based on the reference voltage VR1, the bus signal% and the current detection signal & to the end EN to generate the reference signal Vr. The regulator is used to output the control signal vG according to the reference signal VR to adjust the output of the regulator. The third figure is a preferred embodiment of the split element solution 50 according to this description. The current control unit it 50 includes a pull-up voltage unit, a pull-up resistor Ri, a current generation unit 100, an input unit 15 and an output unit. Fine and adjustment unit ·. The pull-up voltage unit has a light reference and a production increase in%. It includes an operational amplifier 55, a resistor 56 and a resistor 57. The reference voltage VR1_ goes to the positive terminal of the operational amplifier 55. The pull-up resistor & _ is between the pull-up voltage single-line enable terminal EN. The current generation unit generates a first current signal h and a second current signal 12 according to the current detection signal ^. The human unit 15G is secreted to the enabling end en, • M275607 is used to generate a third current signal Ιχ according to the pull-up voltage vM and the bus signal vB. The output unit 250 is coupled to the enable terminal EN for generating a bus signal νΒ according to the second current signal 2 and the pull-up voltage VM. The adjusting unit 200 is coupled to the constant voltage generating unit 40, the current generating unit 100, and the input unit 15 to generate and adjust the reference signal VR according to the test voltage VR1, the first current signal L, and the third current signal; ^ . The fourth figure illustrates a preferred implementation of the current generating unit 100 according to this creation. Through the current mirror formed by the transistor 10, 102, 103, 104, and 105, the current generating unit 100 can generate a first current signal corresponding to the current detection signal "^ and a second current signal 12. Fifth figure It is a preferred embodiment of the input unit 15 in accordance with this creative description. Referring to the fifth figure, the input unit 150 includes an input resistor r2 and a buffer amplifier 160. The buffer amplifier 160 has a first output terminal o / p and a second output terminal. The positive terminal of the buffer amplifier 160 has an offset voltage 155. The positive terminal is coupled to the enable terminal EN to receive the bus signal VB. The negative terminal of the buffer amplifier 160 is connected to an output terminal of its brother. 0 / P, the first output terminal 0 / p is further connected to the pull-up voltage 输入! ^ Via the input resistor R2. The second output terminal of the buffer amplifier 160 is in accordance with the pull-up voltage VM, the bus signal VB, the offset voltage 155 and The input resistor R2 generates a third current signal χ. The current source 161 and the transistors 162, 163, 164, and 165 form a differential input stage of the buffer amplifier 160. The transistor 167 is connected to the transistor 165 and the buffer 13 M275607 — the amplifier I60 First output o / p. Transistors 168 and 169 form a current mirror. Transistor 168 is connected to transistor 167 to receive current from the first output terminal O / P of buffer amplifier 160. Transistor 169 outputs a third current. Signal Ix, so the third current signal Ix is proportional to the current of the first output terminal 0 / P of the buffer amplifier 丨 60. The third current signal ^ can be expressed as equation (1). -..... ......... ⑴ Among them, 1 ^ is the current mirror ratio of transistors 168 and 169, and V0ffset * is the voltage value of the offset voltage 155. The sixth figure is the adjustment unit 200 according to this creative description. According to the sixth figure, the adjustment unit 200 includes an adjustment current mirror composed of transistors 201 and 202, an adjustment resistor Rs, and a unity gain buffer 207. The first current message Fly II and the second current signal Ix are connected to transistor 201. Transistor 202 outputs the adjusted current signal with the third current signal Ix according to # 1 current signal I. The adjustment resistor R3 is connected to transistor 200. To receive the adjustment current signal and generate the reference signal vR. Input termination of unity gain buffer 207 Receive the reference voltage ~, and its output terminal is connected to the adjustment resistor R3. The reference signal Vr can be expressed as equation (2). Vr sVw + l ^ xOx-IOlxRs ............ (2) where , The ratio of the current mirrors of the k2 疋 transistor 2O1 and 2O2., = 7 is a preferred embodiment of the output unit 25G according to this creative description. Please, the output unit 25 of the seventh figure includes the output resistance &, Resistor ⑽, transistor ⑧ 14 M275607 Body = 嶋 _ 目 触 奴 二 _, single-magnification: = output current mirror composed of bodies 251 and 252. The unity gain amplifier ^ = the bus signal Vb. The unit Zengyi asks for the negative = 妾 to its output terminal ′ and its positive terminal is secreted to the pull-up voltage νΜ via the wheel-out resistor R4. Transistor 252 is coupled to the unit gain amplifier 257 via a resistor, a resistor 254 and a resistor 254. Emperor ship w. — Zhi Baori Sun body 251 receives the current generating unit 100 and outputs 1 t current signal 12. A voltage drop is generated on the output resistor R4 according to the second current signal 12. Therefore, the imitation force 铪 _ π-the electric k signal 12, the output resistance R4 and the pull-up voltage Vm generate a bus signal Vb. The bus signal vB can be expressed as equation (3). VB = VM-k3Xl2XR4 ^ Ganshi ..... (3) Eight, h is the current mirror ratio of the transistor 251 and 252. "", And the square private type ⑶, we can find that the bus signal VB is adjusted according to the wheel of the stabilizer, and the six τ mountain and field motor k. Because the output terminal of the unity-gain amplifier 257 is open-pole (or open-pole) type, the unity-gain amplifier 257 can only pull the two-unit output signal Vb, so the enable terminal EN can be connected in parallel. Under no-load conditions, the maximum voltage of the bus-break signal VB is adjusted by the pull-up voltage vM. Transistor? The q & & j resistor 254 limits the minimum voltage of the bus signal VB. This can limit the minimum voltage of the bus signal VB to higher than the threshold voltage of the on / off transistor ⑧ 15 M275607 to modulate the threshold voltage of the body 11 by mistake, thus preventing the regulator from being turned off. The eighth figure is a preferred embodiment in which multiple voltage regulators are connected in parallel according to this creative description. Please refer to the first figure. The voltage stabilizing device includes a plurality of parallel voltage regulators, each of which has an input terminal IN, a wheel, and an enable = EN. The input terminals in of each voltage regulator receive the voltage regulator b together

Another summer input voltage V

The output terminal OUT of each voltage regulator supplies the output voltage of the voltage stabilizing device to share the output current 10. The enable terminals EN of the respective voltage regulators are coupled to each other and the voltage is reduced. The enable terminals control whether each of the voltage regulators is enabled. Among them, it has the most stable voltage IIB with the signal vB. The arbitrated s current is defined as the main voltage regulator, and other voltage regulators are auxiliary commanders. 1 The voltage regulator will be overwhelmed when it catches up with Vb. .Γ ° _ Regulator The formula (1) generates a third current signal Ιχ. The offset is ° ... π package i voffset determines the value. When the voltage drop of the bus signal vB is greater than 4 from the beginning M, the _ signal ^ is generated and is mainly stable: == output current. A lower bus signal% will produce more than lx. Finally, the auxiliary voltage regulator will increase its turn-out voltage— ^ ~ current purpose. Output voltage V. Is from the reference signal to == as in equation (4). j is expressed as Λ7 R31 + R32 V〇 =-^ xVR ............. where 'R31 and r32 are resistance 31 and & respectively resistance. 16 ⑧ M275607 _Indicates that the tea test number VR is adjusted by the third current signal Ιχ and the -current signal h. Among them, the first thunder, liu, li, and ditun / claw tiger 11 are relative voltage regulators. The loss ... Γ 1. When the third current signal Iχ is greater than the first to current signals η, the reference = plus. The increase of the tea test signal Vr will lead to the current I. Increase. ::, t After the output current is 10, the increase of the reference signal vR will be received = the bus signal Vb will be transmitted to each other through the enable terminal EN. Turn out current for the purpose of current. Although the creation of J-knife has been disclosed as above with a preferred embodiment, it is not intended to limit it. This creation is not limited to anyone who knows this skill. Without departing from the spirit of the creation and Fan Tiantian can make some changes and retouching. The scope of protection of the creation shall be as defined by the scope of the attached patent application. Tian Bian .M275607 [Schematic description] The first figure is a typical circuit illustrating a conventional voltage regulator. The second figure illustrates a preferred embodiment of a dust stabilizer with a shunt control function according to the present invention. The third figure illustrates a preferred embodiment of the shunt control unit according to this creation. The fourth figure illustrates a preferred embodiment of the current generating unit according to the present invention. The fifth figure is a preferred embodiment of the input unit according to this creative description. # The sixth figure is a preferred embodiment of the adjustment unit according to this creative description. The seventh figure is based on knowledge, and this creation illustrates a preferred embodiment of the output unit. The eighth figure is a preferred embodiment of a voltage stabilizing device in which a plurality of voltage regulators are connected in parallel according to the present invention. [Description of main component symbols] 5: Regulator 10: Series transistor • n, 12, 13, 15, 101 to 105, 162 to 169, 2 (U, 202, 251 to 253: transistor 20: error amplifier 25, 26: reverse brake 31, 32, 35, 36, 56, 57: resistance 40: constant voltage generating unit 50: shunt control unit 55: operational amplifier 18 M275607 " Ri: pull-up resistor 100 · current generating unit 150 : Input unit 155: Offset voltage 160: Buffer amplifier 161 · Current source 200: Adjustment unit • 207: Unit gain buffer 250: Output unit 254: Resistor 257 · Unit gain amplifier EN: Enable terminal Ii •• First Current signal generator 2 ・ Secondary current signal Im ・ Current detection signal IN ・ Input terminal 10: Output current Ix ・ Second current signal OUT: Output terminal R2: Input resistance R3: Adjustment resistance 19 M275607 'r4: Output resistance vB : Bus signal vIN: unregulated DC input voltage VM: pull-up voltage V〇: regulated DC output voltage

Vd: Voltage drop of series connected transistor

Vr: reference signal Lu VreF, Vri: reference voltage ⑧

20

Claims (1)

M275607 10. Scope of patent application: Wheel-in terminal, one input and one output enable the regulator and 1 · A voltage regulator with shunt control, which has at least an output terminal and an enable terminal, where the enable terminal is used for The control provides a shunt control interface. The regulator includes a series of connected transistors, which have a first terminal, a second terminal, and a third terminal. The younger & is coupled to the input terminal. ^. The output of the main money is to receive the power supply from the mountain—the output voltage and the output current to the output terminal; 疋 The private pressure generating unit is used to generate a reference voltage; a feedback control circuit, the secret to The output terminal and the series-connected transistor are used for detecting the output current and outputting a current-detection signal, and adjusting and outputting-controlling to a third terminal of the series-connected transistor according to a reference signal. Control the output of the voltage regulator; and a knife flow control unit coupled to the enable terminal and the feedback control circuit for generating a bus signal in accordance with the current_signal and the reference, and according to the knowledge cup Test room, the g-stream signal and the current The job number is generated reference signal. > 2. The voltage regulator according to item 1 of the scope of patent application, wherein the feedback control circuit comprises: a current detection unit coupled to the series transistor for detecting the current from the wheel and detecting To generate the current detection signal; M275607 / ^ to the miscellaneous, the input voltage of the input line is divided to generate a feedback voltage; and: the amplifier's positive terminal is input to the sub-shoe is called reference E, miscellaneous The hybrid dragon is made of the serially connected transistor. f voltage regulator, wherein the shunt control 3. The stabilizing unit as described in the first item of the application includes:-a pull-up voltage unit for generating a pull-up voltage in accordance with the reference conversion; two pull-up resistors' _ Between the remaining voltage unit and the enabling terminal; a current generating unit for generating a first current signal and a second current signal according to the current detection signal; the input list 70 'is secreted to the enabling terminal for Generating a third current signal based on the pull-up voltage and the bus signal; an output order it 'is lightly connected to the enable terminal for generating the bus signal based on the second current signal and the pull-up voltage; and The positive unit is coupled to the input unit and the current generating unit, and is configured to generate and adjust the reference signal according to the reference voltage, the first current signal and the third electric ship signal. 4. The voltage regulator according to item 3 of the scope of patent application, wherein the input unit includes: an input resistor whose first end is connected to the pull-up voltage; and 22 M275607-buffer amplifier 'whose positive end has an offset The voltage is reduced to the enable terminal to receive the secret current drain signal. The negative terminal of the buffer amplifier is coupled to 笫-出 of the first round output terminal and the input resistance, v A 4η 刖 柒 柒 以及 and The output of the second round of the buffer amplifier generates the third current signal in accordance with the pull-up voltage, the sink ^ ... a U non-reduced, shifted voltage, and the input resistance including: 5. The voltage regulator described above, wherein the first terminal of the output unit-output resistor is connected to the silk-up circuit; a unity gain amplifier whose positive output is connected to the first output terminal of the output resistor is connected to the enable terminal and the The negative terminal of the unity-gain amplifier uses the bus signal, where the unit is only to be used .... The early terminal of A $ is the end of the open collector; To the unity gain amplifier according to the second Signal flow creates a pressure drop in the output resistor; "wherein the bus signal is generated in accordance with the second current signal, the wheel pulled out of the manifold electrical voltage. 〃 6. The voltage regulator according to item 3 of the scope of patent application, wherein the adjustment unit includes: a current signal adjustment current mirror for generating an adjustment current signal according to the first current signal and the No. tiger; ⑧ 23 M275607 〇 weekly positive resistance, used to receive the adjustment current signal, and generate the reference Lu fL 5 tiger, and the unit gain buffer, its input terminal receives the reference electric ink, and its output terminal is coupled to the adjustment resistor. 7. The voltage regulator as described in item i of the stated patent, further comprising a switch unit—coupled to. Hai Zhiyue end is used to open and close the voltage regulator. When the voltage at the enable end is lower than the -starting voltage, it will be disabled. 8 ·-A voltage stabilizer with shunt control, at least _ input person terminal,-input terminal /, to month b terminal, where the enabling terminal is used to control whether the voltage regulator is enabled and provide a shunt control interface, The voltage regulator includes: #: a series-connected transistor, which has a first terminal, a second terminal, and a third terminal. The first terminal is connected to the read-in terminal, and the second terminal is connected to the round-end terminal. It is used to receive the input voltage of the input terminal to provide -output voltage and -output current to the input and return to the control circuit, secret to the input, adjust and output a control signal to the string according to-reference signal The third terminal of the transistor is connected to control the output of the voltage regulator; and the knife / now-made work order TG is transferred to the enabling terminal and the feedback control circuit to generate the reference signal Lang. Control signal. 9. The viewer described in item 8 of the scope of patent application, further comprising: 24 M275607 a current detection unit coupled to the series transistor for detecting the output current and generating the current detection signal accordingly; And a switch 70 is coupled to the enabling terminal for turning on and off the voltage regulator, wherein when the voltage of the enabling terminal is lower than the threshold voltage, the voltage regulator is disabled. 0 ίο The voltage stabilizer according to item 8 of the scope of the patent application, wherein the shunt control unit is connected to the enable terminal to generate a bus signal according to the size of the output f stream; the shunt control unit is more The reference signal is generated according to the reference voltage, the bus signal and the current output current. 11. As described in item 8 of the application, the feedback control circuit includes:-a voltage divider, to the output, which divides the output voltage to generate a Feedback voltage; and /, is positively connected to the voltage divider to receive the feedback voltage, its negative terminal receives the reference signal, and its output terminal is input to Lingcheng to control the voltage regulator described in the string, where the Shunt control12. If the patented scope of the patent control unit includes: a pull-up voltage unit, the reference voltage is generated in the domain-the pull-up voltage pull-up resistor is connected between the pull-up voltage unit and the enable terminal; 25 M275607-a current generating unit for generating a first current signal and a second current signal according to the current detection signal; an input unit coupled to the enabling terminal for using the boosted voltage and the busbar The signal generates a third current signal; the output unit is connected to this terminal for generating a bus signal according to the second current signal and the pull-up voltage; and an adjustment unit is coupled to the input unit and This current generating unit, In «according to the reference voltage, the first current signal to generate the third current signal and adjusting the reference signal. 13. The voltage regulator according to claim 12, wherein the input unit includes: an input resistor whose first terminal is connected to the pull-up voltage; and-a buffer amplifier 'whose positive terminal has an offset And reduced to the enable terminal to receive the bus signal, the negative terminal of the buffer amplifier is lightly connected to its first output terminal and the second terminal of the input resistance, and the second output terminal of the buffer amplifier The power-up signal, the offset voltage and the input resistance generate the third current signal. 14. The voltage regulator according to claim 12; wherein the output unit includes:-an output resistor 'whose first terminal is connected to the pull-up voltage; 26 M275607 The single amplifier is magnified as' its positive end is lightly connected to the output power and its round end is connected to the enabling end and the unity gain amplifier ^ 'generating the bus signal' and its bit gain Amplify ^ = production type; and ~ is an open-collector-output current mirror, which goes to the positive end of the unity gain amplifier to generate a voltage drop on the output resistor according to the second current signal; The bus signal is generated according to the second current signal, the output resistance, and the pull-up voltage. 15. The voltage regulator according to item 12 of the scope of patent application, wherein the adjustment unit comprises: a trimming current mirror for generating an adjustment current signal according to the first current signal and the third current command hole number; The adjustment resistor is used for receiving the adjustment current signal and generating the reference signal; and a unity gain buffer whose input terminal receives the reference voltage and whose wheel output terminal is coupled to the adjustment resistor. 16. A power supply with shunt control, which has at least one input end, one output end, and one shunt end, including: an output device for providing an output voltage and an output current to the output end; M275607- The feedback control circuit is coupled to the output terminal and the output device, and is used for detecting the output current and adjusting the output current according to the read-out current, and adjusting and outputting the control signal to the output device according to the reference signal to control the _ The output of the power supply; and-the shunt control unit, which is reduced to the shunt terminal and the feedback control circuit, for generating a bus signal in accordance with the current detection signal and the reference voltage *, and according to the reference voltage and the bus The exhaust signal and the current detection signal generate the inflammation test signal. 17. The electric reactor according to item 16 of Shen Qing's patent scope, wherein the feedback control circuit includes:-a current detection unit to the output device, and detects the output current and generates the current detection accordingly. Signal; [-side connected to the output terminal is to divide the output voltage to generate a feedback voltage; and the amplifier's positive wheel is connected to the voltage divider to receive the feedback voltage, which = After receiving the reference signal, the editor _ dies to control the wheel. 18. If the patent application scope, the current control unit includes: 6 _ power supply editor, where the sub-pull :: anti-early fan 'is used in accordance with the reference voltage Generate-pull-up voltage; 1 and, _ between the pull-up voltage unit and the shunt terminal; 28?) M275607 An input unit, coupled to the shunt terminal, for use in accordance with the pull-up voltage and the bus signal Generating a bias signal; an output unit coupled to the shunt terminal to generate the bus signal based on the current detection signal and the pull-up voltage; and an adjustment unit to detect the reference voltage and the current detection Signal and the bias signal And adjusting the reference signal is generated. 29 ⑧