TWI559123B - Burst mode power supply method and burst mode power supply apparatus - Google Patents

Description

Pulse intermittent mode power supply method and pulse intermittent mode power supply device 【0001】

The present invention relates to a power supply method and a power supply device, and more particularly to a pulse intermittent mode power supply method and a pulse intermittent mode power supply device.

【0002】

When the power supply device is in the standby mode or the light load mode, the power supply device enters a burst mode to save energy.

[0003]

When a related art power supply device operates in the pulse intermittent mode and the load of one of the power supply devices connected to the related art is changed (increased or decreased), each burst of the related art power supply device (burst clump) The pulse quantity within, the pulse frequency in each pulse group of the related art power supply device, and the pulse wave duty cycle in each pulse group of the related art power supply device (pulse duty cycle) or the pulse frequency of the pulse group of the related art power supply device may change; therefore, it is difficult to optimize between saving energy and reducing chopping noise, and designing The power supply device of the related art becomes difficult.

[0004]

In order to improve the above disadvantages of the prior art, it is an object of the present invention to provide a pulse intermittent mode power supply method.

[0005]

In order to improve the above disadvantages of the prior art, it is still another object of the present invention to provide a pulse intermittent mode power supply method.

[0006]

In order to improve the above disadvantages of the prior art, it is still another object of the present invention to provide a pulse intermittent mode power supply device.

【0007】

In order to achieve the above object of the present invention, a pulse intermittent mode power supply method of the present invention includes: when a power supply device operates in a pulse intermittent mode, fixes a number of pulse waves in each pulse group of the power supply device, the power source The pulse wave frequency within each burst of the supply device and the pulse wave duty cycle within each burst of the power supply device.

[0008]

Furthermore, the pulse intermittent mode power supply method as described above, wherein the number of pulse waves in each pulse group may be, for example, but the invention is not limited to one, two or n, wherein n is a positive integer greater than zero.

【0009】

Furthermore, the pulse intermittent mode power supply method as described above, wherein the pulse wave duty cycle in each pulse group can be, for example, but the invention is not limited to fifty percent conduction.

[0010]

In order to achieve the above-described further object of the present invention, the pulse intermittent mode power supply method of the present invention comprises: a power supply device entering a pulse intermittent mode; after the power supply device enters the pulse intermittent mode, each of the power supply devices is fixed The number of pulse waves in the pulse group; after the power supply device enters the pulse intermittent mode, the pulse wave frequency in each pulse group of the power supply device is fixed; and after the power supply device enters the pulse intermittent mode, The pulse wave duty cycle within each burst of the power supply device is fixed.

[0011]

Furthermore, the pulse intermittent mode power supply method as described above, wherein the number of pulse waves in each pulse group may be, for example, but the invention is not limited to one, two or n, wherein n is a positive integer greater than zero.

[0012]

Furthermore, the pulse intermittent mode power supply method as described above, wherein the pulse wave duty cycle in each pulse group can be, for example, but the invention is not limited to fifty percent conduction.

[0013]

In order to achieve the above-mentioned other object of the present invention, the pulse intermittent mode power supply device of the present invention comprises: a voltage input terminal; a power switch circuit electrically connected to the voltage input terminal; and a voltage output terminal The voltage output terminal is electrically connected to the power switch circuit; and a pulse width modulation signal generating circuit is electrically connected to the power switch circuit. Wherein the pulse width modulation signal generating circuit controls the power switching circuit by a pulse width modulation signal, so that the pulse intermittent mode power supply device enters a pulse intermittent mode; and the pulse intermittent mode power supply device enters the pulse intermittent mode Thereafter, the number of pulse waves in each pulse group of the pulse intermittent mode power supply device is fixed; after the pulse intermittent mode power supply device enters the pulse intermittent mode, the pulse intermittent mode power supply device is fixed in each pulse group a pulse wave frequency; after the pulse intermittent mode power supply device enters the pulse intermittent mode, the pulse wave duty cycle in each pulse group of the pulse intermittent mode power supply device is fixed, but one pulse interval of the pulse group is not fixed frequency.

[0014]

Furthermore, the pulse intermittent mode power supply device as described above, wherein an input voltage is transmitted to the power switch circuit through the voltage input terminal; the pulse width modulation signal generating circuit transmits the pulse width modulation signal to the power switch The circuit is configured such that the power switching circuit is controlled by the pulse width modulation signal to convert the input voltage into an output voltage; the power switching circuit outputs the output voltage through the voltage output terminal.

[0015]

Furthermore, the pulse intermittent mode power supply device as described above, wherein the number of pulse waves in each pulse group may be, for example, but the invention is not limited to one, two or n, wherein n is a positive integer greater than zero.

[0016]

Furthermore, the pulse intermittent mode power supply device as described above, wherein the pulse wave duty cycle in each pulse group can be, for example, but the invention is not limited to fifty percent conduction.

[0017]

The effect of the present invention is to save more energy, reduce chopping noise, and design the power supply device more easily when the power supply device is operating in the pulsed intermittent mode.

[0051]

Step S02～08

[0052]

Step T02~14

[0053]

Pulse intermittent mode power supply device 10

[0054]

Load 20

[0055]

Voltage input 102

[0056]

Power switch circuit 104

[0057]

Voltage output 106

[0058]

Pulse width modulation signal generating circuit 108

[0059]

Load detection circuit 110

[0060]

Pulse width modulation signal 112

[0061]

Input voltage 114

[0062]

Output voltage 116

[0018]

1 is a flow chart of a first embodiment of a pulse intermittent mode power supply method according to the present invention.

[0019]

2 is a flow chart of a second embodiment of a pulse intermittent mode power supply method according to the present invention.

[0020]

3 is a block diagram of a pulse intermittent mode power supply device of the present invention.

[0021]

4 is a waveform diagram of an embodiment of a complex number of the pulse width modulation signal.

[0022]

The detailed description and the technical description of the present invention are to be understood as the

[0023]

Please refer to FIG. 1, which is a flow chart of a first embodiment of a pulse intermittent mode power supply method according to the present invention. The pulse intermittent mode power supply method of the present invention comprises the following steps:

[0024]

S02: when a power supply device operates in a burst mode, the pulse quantity in each burst clump of the power supply device is fixed, and each of the power supply devices The pulse frequency in the pulse group and the pulse duty cycle in each pulse group of the power supply device.

[0025]

S04: detecting a load connected to the power supply device.

[0026]

If the load connected to the power supply device increases, the process proceeds to step S06; if the load connected to the power supply device decreases, the process proceeds to step S08.

[0027]

S06: When the load connected to the power supply device increases, increasing a pulse burst frequency of the pulse group of the power supply device.

[0028]

S08: reducing the pulse intermittent frequency of the pulse group of the power supply device when the load connected to the power supply device is reduced.

[0029]

Wherein, the above steps S06 and S08 still fix the number of pulse waves in each pulse group of the power supply device, the pulse wave frequency in each pulse group of the power supply device, and each pulse group in the power supply device Pulse wave duty cycle.

[0030]

Please refer to FIG. 2, which is a flow chart of a second embodiment of a pulse intermittent mode power supply method according to the present invention. The pulse intermittent mode power supply method of the present invention comprises the following steps:

[0031]

T02: A power supply device enters a pulse intermittent mode.

[0032]

T04: After the power supply device enters the pulse intermittent mode, the number of pulses in each pulse group of the power supply device is fixed.

[0033]

T06: After the power supply device enters the pulse intermittent mode, the pulse wave frequency in each pulse group of the power supply device is fixed.

[0034]

T08: After the power supply device enters the pulse intermittent mode, the pulse wave working period in each pulse group of the power supply device is fixed.

[0035]

T10: Detecting a load connected to one of the power supply devices.

[0036]

If the load connected to the power supply device increases, the process proceeds to step T12; if the load connected to the power supply device decreases, the process proceeds to step T14.

[0037]

T12: increasing the pulse intermittent frequency of the pulse group of the power supply device when the load connected to the power supply device increases.

[0038]

T14: reducing the pulse intermittent frequency of the pulse group of the power supply device when the load connected to the power supply device is reduced.

[0039]

Wherein, the above steps T12 and T14 still fix the number of pulse waves in each pulse group of the power supply device, the pulse wave frequency in each pulse group of the power supply device, and each pulse group in the power supply device Pulse wave duty cycle.

[0040]

Please refer to FIG. 3, which is a block diagram of a pulse intermittent mode power supply device of the present invention. The pulse intermittent mode power supply device 10 of the present invention is applied to a load 20; the pulse intermittent mode power supply device 10 includes a voltage input terminal 102, a power switch circuit 104, a voltage output terminal 106, and a pulse width modulation signal. The circuit 108 and a load detection circuit 110 are generated.

[0041]

The power switch circuit 104 is electrically connected to the voltage input terminal 102 and the load 20; the voltage output terminal 106 is electrically connected to the power switch circuit 104 and the load 20; the pulse width modulation signal generation circuit 108 is electrically connected. The power switch circuit 104 is electrically connected to the power switch circuit 104, the voltage output terminal 106, the pulse width modulation signal generating circuit 108, and the load 20.

[0042]

The pulse width modulation signal generating circuit 108 controls the power switching circuit 104 by a pulse width modulation signal 112 such that the pulse intermittent mode power supply device 10 enters a pulse intermittent mode; in the pulse intermittent mode power supply device 10 enters After the pulse pause mode, the number of pulse waves in each pulse group of the pulse intermittent mode power supply device 10 is fixed; after the pulse intermittent mode power supply device 10 enters the pulse intermittent mode, the pulse intermittent mode power supply device is fixed The pulse wave frequency in each pulse group of 10; after the pulse intermittent mode power supply device 10 enters the pulse intermittent mode, the pulse wave duty cycle in each pulse group of the pulse intermittent mode power supply device 10 is fixed.

[0043]

After the pulse intermittent mode power supply device 10 enters the pulse intermittent mode, the load detecting circuit 110 detects the load 20 and notifies the pulse width modulation signal generating circuit 108 of the load 20. When the load 20 is increased, the pulse width modulation signal generating circuit 108 increases a pulse intermittent frequency of the pulse group of the pulse intermittent mode power supply device 10, but still fixes each pulse of the pulse intermittent mode power supply device 10. The number of pulse waves in the group, the pulse wave frequency in each pulse group of the pulse intermittent mode power supply device 10, and the pulse wave duty cycle in each pulse group of the pulse intermittent mode power supply device 10. When the load 20 is decreased, the pulse width modulation signal generating circuit 108 reduces one pulse intermittent frequency of the pulse group of the pulse intermittent mode power supply device 10, but still fixes each pulse of the pulse intermittent mode power supply device 10. The number of pulse waves in the group, the pulse wave frequency in each pulse group of the pulse intermittent mode power supply device 10, and the pulse wave duty cycle in each pulse group of the pulse intermittent mode power supply device 10.

[0044]

An input voltage 114 is transmitted to the power switch circuit 104 via the voltage input terminal 102; the pulse width modulation signal generating circuit 108 transmits the pulse width modulation signal 112 to the power switch circuit 104 such that the power switch circuit 104 is The pulse width modulation signal 112 is controlled to convert the input voltage 114 into an output voltage 116; the power switching circuit 104 outputs the output voltage 116 via the voltage output terminal 106.

[0045]

Wherein, the number of pulse waves in each pulse group may be, for example, but the invention is not limited to one, two or n, wherein n is a positive integer greater than zero; the pulse wave duty cycle in each pulse group may be, for example However, the invention is not limited to being turned on by fifty percent.

[0046]

When a related art power supply device operates in the pulse intermittent mode and the load of one of the power supply devices connected to the related art is changed (increased or decreased), the pulse wave in each pulse group of the related art power supply device The number, the pulse wave frequency in each pulse group of the power supply device of the related art, the pulse wave duty cycle in each pulse group of the related art power supply device, or the pulse group of the power supply device of the related art The pulse intermittent frequency may change (too many variables); therefore, it is difficult to optimize between saving energy and reducing chopping noise, and it is difficult to design a power supply device of the related art.

[0047]

The present invention is to fix the number of pulse waves in each pulse group of the power supply device, the pulse wave frequency in each pulse group of the power supply device, when the power supply device operates in the pulse intermittent mode. a pulse wave duty cycle in each pulse group of the power supply device; and when the load connected to the power supply device increases, only the pulse intermittent frequency of the pulse group of the power supply device is increased; when the power supply is connected When the load of the device is reduced, only the pulse intermittent frequency of the pulse group of the power supply device is reduced. Therefore, it is easy to optimize between saving energy and reducing chopping noise (because the variable is only the intermittent frequency of the pulse), and it is easy to design the power supply device of the related art.

[0048]

Please refer to FIG. 4, which is a waveform diagram of an embodiment of the complex of the pulse width modulation signal. The first waveform from top to bottom shows four pulse groups. The second waveform from top to bottom shows three pulse groups. The third waveform from top to bottom shows the two pulse groups. The frequency of the pulse group appears. It is called pulse intermittent frequency; the load 20 corresponding to the third waveform from top to bottom is the smallest; the load 20 corresponding to the second waveform from top to bottom is larger than the load corresponding to the third waveform from top to bottom. 20; the load 20 corresponding to the first waveform from top to bottom is greater than the load 20 corresponding to the second waveform from top to bottom. The number of pulse waves in each pulse group of the above three waveforms, the pulse wave frequency in each pulse group and the pulse wave working period in each pulse group are the same, and only the pulse intermittent frequency will follow the load 20 Change; if the load 20 is larger, the pulse intermittent frequency is higher; if the load 20 is smaller, the pulse intermittent frequency is lower.

[0049]

The effect of the present invention is that when the pulse intermittent mode power supply device 10 operates in the pulsed intermittent mode, it saves more energy, reduces chopping noise, and more easily designs the power supply device.

[0050]

However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention should still be covered by the patent of the present invention. The scope of the scope is intended to protect. The invention may be embodied in various other modifications and changes without departing from the spirit and scope of the inventions. It is intended to fall within the scope of the appended claims. In summary, it is known that the present invention has industrial applicability, novelty and advancement, and the structure of the present invention has not been seen in similar products and public use, and fully complies with the requirements of the invention patent application, and is filed according to the patent law.

Step S02～08

Claims (10)

[Item 1] A pulse intermittent mode power supply method comprising:
a. when a power supply device operates in a pulse intermittent mode, the number of pulse waves in each pulse group of the power supply device, the pulse wave frequency in each pulse group of the power supply device, and the power supply device The pulse wave duty cycle within each burst. [Item 2] The pulse intermittent mode power supply method of claim 1, wherein the number of pulse waves in each pulse group is one, two or n, wherein n is a positive integer greater than zero. [Item 3] The pulse intermittent mode power supply method of claim 1, wherein the pulse wave duty cycle in each pulse group is fifty percent conductive. [Item 4] A pulse intermittent mode power supply method comprising:
a. a power supply device enters a pulse intermittent mode;
b. after the power supply device enters the pulse intermittent mode, fix the number of pulse waves in each pulse group of the power supply device;
c. after the power supply device enters the pulse intermittent mode, fixing the pulse wave frequency in each pulse group of the power supply device; and
d. After the power supply device enters the pulse intermittent mode, the pulse wave duty cycle in each pulse group of the power supply device is fixed. [Item 5] The pulse intermittent mode power supply method of claim 4, wherein the number of pulses in each burst is one, two or n, wherein n is a positive integer greater than zero. [Item 6] The pulse intermittent mode power supply method of claim 4, wherein the pulse wave duty cycle in each pulse group is fifty percent conductive. [Item 7] A pulse intermittent mode power supply device comprising:
a voltage input terminal;
a power switching circuit, the power switching circuit is electrically connected to the voltage input terminal;
a voltage output end, the voltage output end is electrically connected to the power switch circuit; and a pulse width modulation signal generating circuit, the pulse width modulation signal generating circuit is electrically connected to the power switch circuit,
Wherein the pulse width modulation signal generating circuit controls the power switching circuit by a pulse width modulation signal, so that the pulse intermittent mode power supply device enters a pulse intermittent mode; and the pulse intermittent mode power supply device enters the pulse intermittent mode Thereafter, the number of pulse waves in each pulse group of the pulse intermittent mode power supply device is fixed; after the pulse intermittent mode power supply device enters the pulse intermittent mode, the pulse intermittent mode power supply device is fixed in each pulse group The pulse wave frequency; after the pulse intermittent mode power supply device enters the pulse intermittent mode, the pulse wave duty cycle in each pulse group of the pulse intermittent mode power supply device is fixed. [Item 8] The pulse intermittent mode power supply device of claim 7, wherein an input voltage is transmitted to the power switch circuit through the voltage input terminal; the pulse width modulation signal generating circuit transmits the pulse width modulation signal to The power switching circuit is configured such that the power switching circuit is controlled by the pulse width modulation signal to convert the input voltage into an output voltage; the power switching circuit outputs the output voltage through the voltage output terminal. [Item 9] The pulse intermittent mode power supply device of claim 7, wherein the number of pulse waves in each pulse group is one, two or n, wherein n is a positive integer greater than zero. [Item 10] The pulse intermittent mode power supply device of claim 7, wherein the pulse wave duty cycle in each pulse group is fifty percent conductive.