KR100302608B1 - Trapezoid multi-phase clocked power generation apparatus - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trapezoidal multiphase power generation device, and more particularly, to use an inductor to generate a trapezoidal pulsating power source having an arbitrary phase number. In order to achieve the above object, the present invention provides a single inductor 530 and a pair of the inductors 530, which are selectively connected to both ends of the inductor 530, respectively. Rail drivers 520-1 to 520-n for outputting a plurality of control signals , , , , , ) And a pair of the rail drivers (520-1 to 520-n) selectively to both ends of the one inductor (530) , Rail driver control unit 510 to be connected to

Description

TRAPZOID MULTI-PHASE CLOCKED POWER GENERATION APPARATUS}

TECHNICAL FIELD The present invention relates to clock generation, and more particularly, to a trapezoidal multiphase pulsating power generator for adiabatic circuits.

Low power circuits with reduced power consumption have adiabatic circuits.

The power supply of the adiabatic circuit uses a clock in the form of AC voltage, not DC voltage. ) To supply energy, and after the operation, the clock is slowly lowered to the minimum power voltage (GND) to restore energy to the clock, thereby greatly reducing power consumption.

Slow switching here is called adiabatic switching, which reduces energy consumption, or heat generation, due to sudden voltage changes.

That is, the power supply used in the adiabatic circuit is a pulsating power supply having a trapezoidal shape with a constant slope, and generally has two or more multiphases.

1 is a waveform diagram illustrating an pulsation type power supply of n phase.

The phase of the pulsating power source can be classified into four types: energy supply state, maximum power supply voltage maintenance state, energy recovery state, and minimum power supply voltage maintenance state.

The energy supply state is a section in which the pulsating power source transitions from the minimum power supply voltage to the maximum power supply voltage.

The maximum power supply voltage maintaining state is a section in which the pulsating power supply maintains the maximum power supply voltage.

The energy recovery state is a section in which the pulsating power source transitions from the maximum power supply voltage to the minimum power supply voltage.

The minimum power supply voltage maintenance state is a section in which the pulsating power supply maintains the minimum power supply voltage.

Thus, there are various types of pulsating power sources having four states.

For example, the waveforms of the pulsation type power supplies of 4 phases, 6 phases, and 8 phases are as shown in Figs.

Fig. 2 is a waveform diagram illustrating a four-phase pulsation type power supply, with four phase states, one section.

Fig. 3 is a waveform diagram illustrating a six-phase pulsating power supply, in which six phase states include one section of energy supply state, one section of maximum power supply voltage retention state, one section of energy recovery state, and three sections of minimum supply voltage. It is divided into maintenance state.

Fig. 4 is a waveform diagram illustrating an eight-phase pulsation type power supply, in which eight phase states include one section of energy supply state, three sections of maximum supply voltage holding state, one section of energy recovery state, and three sections of minimum supply voltage. It is divided into maintenance state.

In addition, multiple combinations of the four phases can be used to generate pulsating power sources of varying phase numbers and shapes.

Conventional multi-phase pulsating power generation methods can be classified into two categories.

One is to use stepped charging with a charger.

This creates a trapezoidal waveform by redistributing the charges of the charger step by step. Since it is a stepped charging, the trapezoidal waveform is approximated by making the charge redistribution period very short.

The other method is to use LC resonance using an inductor.

This is to determine the resonant frequency based on the values of the inductor capacitance (L) and the capacitance capacitance (C) and to use the sinusoidal wave generated by the resonance frequency. The four phase states of the trapezoidal waveform are determined by modeling the sinusoidal wave approximately. .

However, the conventional pulsating power generation method using stepped charging has a problem that the waveform of the pulsating power is not smooth because the waveform of the pulsating power.

In addition, the conventional pulsation type power generation method using LC resonance is easy to implement with one inductor when implemented in two phases, but has a disadvantage in that a plurality of inductors are required when having more than the number of phases.

In other words, the conventional pulsation type power generation method using LC resonance requires additional efforts to synchronize the inductors when multiple inductors are used to generate pulsation type power sources having a plurality of phases. Given the difficulty, it can be said to be a less effective method.

Accordingly, an object of the present invention is to provide a trapezoidal multi-phase pulsating power generating device which is designed to generate a trapezoidal pulsating power having an arbitrary number of phases by using one inductor to improve the conventional problem. have.

1 is a waveform diagram illustrating an n-phase pulsating power supply.

2 is a waveform diagram illustrating a four-phase pulsating power supply;

3 is a waveform diagram illustrating a six-phase pulsating power supply;

4 is a waveform diagram illustrating an eight-phase pulsating power supply;

5 is a block diagram of an apparatus showing an embodiment of the present invention.

6 is an operation timing diagram for controlling the rail driver in FIG.

FIG. 7 is a circuit diagram of the rail driver of FIG. 5. FIG.

FIG. 8 is a timing diagram illustrating a connection point of an inductor when generating a 4-phase pulsation type power supply of FIG. 5.

FIG. 9 is a timing diagram illustrating a connection point of an inductor when generating a six-phase pulsation type power supply of FIG. 5.

FIG. 10 is a timing diagram illustrating a connection point of an inductor when generating an 8-phase pulsation type power supply of FIG. 5; FIG.

Explanation of symbols on the main parts of the drawings

510: n-phase clock generation control unit 520-1 to 520-n: rail driver

530: inductor 710,720: transmission gate

730,740: MOS transistor 750: capacitor

In order to achieve the above object, the present invention provides a single inductor, a plurality of capacitors selectively connected to both ends of the inductor to generate a multi-phase clock, and a reference clock as an input for generating a multi-phase clock. A rail driver control unit for generating a plurality of control signals, a switching unit for selecting one pair of the plurality of capacitors and connecting them to both ends of the inductor according to the control signal of the rail driver control unit, and for charging and discharging the plurality of capacitors It is characterized by comprising a charge and discharge unit.

The switching unit may include a first transmission gate connecting one terminal of the inductor to the capacitor by a left switching signal that is active only in an energy supply section, and the other terminal of the inductor by a light switching signal that is activated high only in an energy recovery section. And a plurality of capacitors including a circuit comprising a second transfer gate connecting the capacitors to the capacitors.

The charging and discharging unit discharges the charge charges of the capacitor by the PMOS transistor which charges the capacitor by the control signal which is activated low only at the maximum power supply voltage holding section, and by the control signal which is activated high only by the minimum power supply voltage holding section. And a plurality of capacitors including a circuit composed of NMOS transistors.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 5 is a block diagram of a device showing an embodiment of the present invention, as shown in FIG. 5, by resonating one pair of inductors 530 and selectively connected to both ends of the inductor 530. Rail drivers 520-1 to 520-n for outputting a plurality of control signals , , , , , ) And a pair of the rail drivers (520-1 to 520-n) selectively to both ends of the one inductor (530) , Rail driver control unit 510 to be connected to

The rail driver control unit 510 divides the reference clock signal into six regular rail driver control signals ( , , , , , Implemented with a counter and boolean logic to generate n signals consisting of

The plurality of rail drivers 520-1 to 520-n resonate with the inductor 530 as shown in the circuit diagram of FIG. And a left switching signal active high only in the energy supply section. One terminal of the inductor 530 by ) Is connected to the condenser 750 and the transfer gate 710 and the light switching signal that is active high only in the energy recovery period ( The other terminal of the inductor 530 by ) Is connected to the condenser 750, and the second control gate 720 and a control signal that is activated low only at the maximum power supply voltage holding period ( PMOS transistor 730 that charges the capacitor 750 by the charge, and a control signal that is active high only at the minimum power supply voltage holding period ( Each of the NMOS transistors 740 discharges the charge of the capacitor 750.

One terminal of the condenser 750 is grounded.

I is 0 to (n-1) in the above.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

n pulsating power sources ( To ), The rail driver controller 510 generates six control signals, respectively, as a reference clock. , , , , , N signals are transmitted to the rail drivers 520-1 to 520-n, respectively.

At this time, a pair of rail drivers 520-1 to 520-n are selected and connected to both ends of the inductor 530 are sequentially repeated.

Accordingly, the capacitor and the inductor 530 included in the selected rail driver among the rail drivers 520-1 through 520-n resonate to trap a trapezoidal pulsating power source ( To Will be generated.

Where the pulsating power source ( To ) Phase consists of energy supply section, maximum supply voltage maintenance section, energy recovery section, and minimum supply voltage maintenance section.

Each control signal (outputted from the rail driver 510 to the respective rail drivers 520-1 to 520-n) , , , , , ) Is shown in FIG.

Therefore, the operation of the rail drivers 520-1 to 520-n configured as shown in FIG. 7 will be described with reference to the i-th rail driver 520-i as an example.

First, the i th clock ( If the phase of) is the energy supply section, the control signal ( ) ( ) Is high and the control signal ( ) ( ) Is low, only the transfer gate 710 is on and the transfer gate 720 and MOS transistors 730 and 740 are off.

At this time, since the transmission gate 710 is turned on, the clock rail that is one terminal of the non-grounded capacitor 750 ( ) Is one terminal of the inductor 530 ( )

Therefore, the i-th clock (the resonance of the inductor 530 and the condenser 750). ) Gradually increase the level.

After this, the i th clock ( Control phase () ) ( ) ( ) ( ) Are all low, so the PMOS transistor 730 is turned on and the transfer gates 710 and 720 and the NMOS transistor 740 are turned off.

At this time, the PMOS transistor 730 through the power supply voltage ( ) This clock rail ( ) To charge the capacitor 750.

Therefore, the i th clock ( ) Is the maximum supply voltage ( ) Level.

After this, the i th clock ( If the phase of) becomes the energy recovery section, the control signal ( ) ( ) Becomes high and the control signal ( ) ( ) Becomes low, so the transfer gate 720 is on and the transfer gate 710 and MOS transistors 730 and 740 are off.

At this time, the transmission gate 720 is turned on so that the other terminal of the inductor 530 ( ) Is the clock rail ( )

Therefore, the i-th clock (the resonance of the inductor 530 and the capacitor 750) ) Gradually decreases.

After this, the i th clock ( Control phase () ) Becomes high and the control signal ( ) ( ) ( ) Is low, so the NMOS transistor 740 is turned on and the PMOS transistor 730 and the transfer gates 710 and 720 are turned off.

At this time, the NMOS transistor 740 is turned on so that the clock rail ( Is connected to ground (GND).

Therefore, the charge charges of the capacitor 530 are discharged, so that the i th clock ( ) Is the ground level.

By repeating the above operation, the i th clock ( ) Is generated as a trapezoidal waveform.

That is, the rail drivers 520-1 to 520-n perform the same operation as described above, so that the trapezoidal pulsating power supply ( To Will be generated.

On the other hand, according to the number of pulsating power supplies desired in the present invention, as many as the number of pulsating power supplies among the plurality of rail drivers 520-1 to 520-n are connected.

For example, if four pulsating power sources are generated, four rail drivers are connected. If six pulsating power sources are generated, six rail drivers are connected.

At this time, both terminals of the inductor 530 in order to generate a pulsating power supply having a waveform as shown in FIGS. ) ( ) Any number of clock rails ( ) Are connected to each other as shown in FIGS. 8 to 10, which will be described below.

First, in the case of making a waveform of the section 'T = 0' in Figure 2 as shown in Figure 7 one terminal of the inductor (530) ( ) Is the clock rail ( ) And the other terminal of the inductor 530 ( ) Is the clock rail ( ) And the remaining clock rails ( ), ( ) Are ground (GND) and power voltage ( ).

That is, the clock rails ( ) Is the energy supply section and the clock rail ( ) Is the lowest supply voltage holding period and clock rail ( ) Is the energy recovery interval and the clock rail ( ) Is the maximum supply voltage maintenance interval.

Accordingly, the rail driver controller 510 may generate signals for controlling the above operation to drive four rail drivers.

After that, a waveform of a section of 'T = 1, 2, 3' is generated in the same manner as described above, and four signals may be repeatedly generated.

Then, the clock rail ( To ) Are selected in pairs one by one so that both terminals of the inductor 530 ( ) ( ) To generate a pulsating power supply such as the waveform of FIG.

10 shows the clock rails in the same order. To ) Are selected in pairs one by one so that both terminals of the inductor 530 ( ) ( ), A pulsation type power source such as the waveform of FIG. 4 can be generated.

As described in detail above, the present invention can easily generate various phase numbers and trapezoidal pulsating power supplies by using one inductor, thereby improving performance and reducing manufacturing cost.

Claims (5)

A rail driver controller for outputting a plurality of signals each consisting of one inductor, a control signal for sequentially supplying energy, maintaining maximum power supply voltage, restoring energy, and maintaining minimum power supply voltage by dividing a reference clock; In the energy recovery section, a plurality of phases for the adiabatic circuit are composed of a plurality of rail drivers sequentially selected by a pair of control signals from the rail driver controller and connected to both ends of the inductor and generating a trapezoidal clock. Trapezoidal multi-phase pulsating power generating device, characterized in that for generating a plurality of trapezoidal pulsating power. The terminal of claim 1, wherein the plurality of rail drivers include a capacitor resonating with the inductor and a left switching signal active only in an energy supply section. ) Is connected to the condenser and the other terminal of the inductor by a light switching signal active only in the energy recovery section Second switching means for connecting the capacitor to the capacitor, third switching means for supplying the power supply voltage to the capacitor by a control signal active only at the maximum power supply voltage holding section, and a control signal active only at the minimum power supply voltage holding section. And fourth switching means for discharging the charging potential of the capacitor by the trapezoidal multi-phase pulsating power generating device. 3. The trapezoidal multi-phase pulsating power generating device according to claim 2, wherein the first to fourth switching means are configured as transmission gates, respectively. The trapezoidal multi-phase pulsating power generating device according to claim 2, wherein the first to fourth switching means are configured as switching elements, respectively. The trapezoidal multi-phase pulsating power generating device according to claim 1, wherein the plurality of rail drivers are configured in the same number as the desired clock number.