TW202228375A - Power output module - Google Patents

Abstract

The invention discloses a power output module, comprises a power source and a positive output circuit assembly. The power source provides alternating voltage. The positive circuit assembly connected to the power source comprises a first ground node and N positive output nodes defined in a first current path, and the first ground node and a ith positive output node of the N positive output nodes provides a ith positive voltage, wherein positive output voltages between the first ground node and different positive output nodes are different, wherein N is a positive integer, and i is a positive integer not greater than N.

Description

Power output module

The present invention relates to an electrical energy output module, in particular to an electrical energy output module capable of providing multiple output voltages.

Generally speaking, a test device has functional circuits that perform various functions, and the voltages required to drive these functional circuits may vary. Therefore, in order for these functional circuits to operate normally, the electrical energy provided by the power source needs to be converted into a plurality of different output voltages and input to the corresponding functional circuits respectively. In the prior art, a functional circuit is generally used with a corresponding voltage converter, such as an AC-to-DC converter or a DC-to-DC converter. Therefore, after the voltage is converted by the voltage conversion module, the functional circuit can receive the correct voltage and be driven to perform the corresponding function.

However, when the number of functional circuits inside the test device increases, the number of required voltage converters also increases accordingly. Obviously, the larger the number of voltage converters, the larger the internal space of the test device is required. Due to the limited space in the workshop, the larger test device will bring inconvenience. In addition, the larger the number of voltage converters, the higher the cost of the test device and the disadvantage of subsequent repairs and maintenance. Accordingly, the industry needs a new power output module that can provide multiple different output voltages in addition to reducing the number of voltage converters.

The invention provides an electric energy output module, which can convert AC voltage by a voltage multiplier circuit, and then provide a plurality of different output voltages from a plurality of output nodes, so that it can correspond to a plurality of functional circuits inside the test device.

The present invention provides a power output module, which includes a power supply and a positive output circuit group. The power supply is used to provide AC voltage. The positive output circuit group is electrically connected to the power supply, and includes a first ground node and N positive output nodes, the first ground node and the N positive output nodes are defined in the first current path, and the first ground node and the N positive output nodes are defined in the first current path. The ith positive output voltage is provided between the ith positive output nodes of . The positive output voltages are different between the first ground node and different positive output nodes among the N positive output nodes. N is a positive integer, and i is a positive integer not greater than N.

In some embodiments, the first ground node is electrically connected to the first end of the power supply, the first current path includes N first capacitors connected in series, and N first capacitors are arranged between two adjacent positive output nodes. one of them. In addition, one of the N first capacitors is provided between the first ground node and the first positive output node among the N positive output nodes. In addition, the ith positive output voltage is the total voltage across the first capacitor connected in series between the first ground node and the ith positive output node. Furthermore, the positive output circuit group further includes N positive energy storage nodes, one of N second capacitors is arranged between adjacent positive energy storage nodes, and the first positive energy storage node in the N positive energy storage nodes is positive. One of the N second capacitors is arranged between the energy node and the second end of the power supply. During the negative half cycle of the AC voltage, the AC voltage charges the N second capacitors, and during the positive half cycle of the AC voltage, the AC voltage and the N second capacitors charge the Nth capacitors. The AC voltage has a peak voltage, and the i-th positive output voltage is an integer multiple of the peak voltage

To sum up, the power output module provided by the present invention can utilize the voltage multiplier circuit to convert the AC voltage, and then provide a plurality of different output voltages from a plurality of output nodes. Thereby, a plurality of functional circuits inside the testing device can be electrically connected to the corresponding output nodes according to the required voltage. That is, the power output module provided by the present invention can reduce the number of voltage converters, which can not only reduce the volume of the test device, but also reduce the cost of the test device.

The features, objects and functions of the present invention will be further disclosed below. However, the following descriptions are only examples of the present invention, and should not be used to limit the scope of the present invention, that is, any equivalent changes and modifications made according to the scope of the patent application of the present invention will still be the essence of the present invention, Without departing from the spirit and scope of the present invention, it should be regarded as a further embodiment of the present invention.

Please refer to FIG. 1 . FIG. 1 is a schematic circuit diagram of a power output module according to an embodiment of the present invention. As shown in FIG. 1 , this embodiment exemplifies a power output module 1a, which includes a power supply 10 and a positive output circuit group 20a. The power supply 10 is used for providing an AC voltage, and the positive output circuit group 20a is electrically connected to the power supply 10 . Those skilled in the art can understand that the AC voltage will have approximately the same positive half cycle and negative half cycle. In this embodiment, the peak voltage of the positive half cycle is denoted as V _pk , and the peak voltage of the negative half cycle is for -V _pk . In this embodiment, the power source 10 may be commercial power, a DC-to-AC converter, or an AC-to-AC converter, but not limited thereto, all sources that can provide AC voltage belong to the scope of the power source 10 in this embodiment.

The positive output circuit group 20a includes a first ground node GND ₁ , a first positive output node n ₁ and a second positive output node n ₂ , and the first ground node GND ₁ , the first positive output node n ₁ and the second positive output node n ₂ is defined in the first current path. For example, the right side in FIG. 1 , the straight line path from the first ground node GND ₁ to the second positive output node n ₂ . It can be seen from FIG. 1 that the first ground node GND ₁ of the positive output circuit group 20a is electrically connected to the first terminal P ₁ of the power supply 10 , and the first current path of the positive output circuit group 20a includes two first capacitors C ₁₁ connected in series and the first capacitor C ₁₂ . The first capacitor C ₁₁ is set between the first ground node GND ₁ and the first positive output node n ₁ , and the first capacitor C ₁₂ is set between the adjacent first positive output node n ₁ and the second positive output node n between ₂ .

In addition, the positive output circuit group 20 further includes a first positive energy storage node m ₁ , a second positive energy storage node m ₂ , and two second capacitors C ₂₁ and C ₂₂ connected in series. The second capacitor C ₂₁ is set between the second terminal P ₁ of the power supply 10 and the first positive energy storage node m ₁ , and the second capacitor C ₂₂ is set between the first positive energy storage node m ₁ and the second positive energy storage node m 1 between nodes _m2 . In one example, the positive output circuit group 20 may include a diode D ₁₁ , a diode D ₁₂ , a diode D ₂₁ , and a diode D ₂₂ , and the anode and the cathode of the diode D ₁₁ are electrically connected to the second A ground node GND ₁ and the first positive energy storage node m ₁ , the anode and cathode of the diode D ₁₂ are respectively electrically connected to the first positive energy storage node m ₁ and the first positive output node n ₁ , the diode D ₂₁ The anode and cathode of the diode D 22 are respectively electrically connected to the first positive output node n ₁ and the second positive energy storage node m ₂ , and the anode and cathode of the diode D ₂₂ are respectively electrically connected to the second positive energy storage node m ₂ and the second positive energy storage node m 2 . Output node n ₂ . In other words, the positive output circuit group 20 can form a voltage doubler circuit. This embodiment does not limit the specifications of the electronic components inside the positive output circuit group 20. _The two first capacitors _C11 and C12 can be the same as each other, and the two second capacitors _C21 and _C22 can be identical to each other.

Under the circuit structure of the power output module 1a as shown in FIG. 1 , the first positive output voltage V ₁ can be provided between the first ground node GND ₁ and the first positive output node n ₁ , the first ground node GND ₁ and the second A second positive output voltage V _{2 may be provided between the positive output nodes n 2 .} That is, the power output module 1a can provide two positive output voltages, which are the first positive output voltage V ₁ and the second positive output voltage V ₂ respectively. The working principle of generating the first positive output voltage V ₁ and the second positive output voltage V ₂ will be described below.

First, the power supply 10 supplies an AC voltage with a peak voltage _Vpk . During the first negative half cycle of the AC voltage, the potential of the first terminal P ₁ is relatively high, and the potential difference between the first terminal P ₁ and the second terminal P ₂ is V _pk . At this time, the first terminal P ₁ and the first ground node GND ₁ are at the same potential (ground potential), and the diode D ₁₁ is forwardly conducted, so that the first positive energy storage node m ₁ and the first ground node GND ₁ are approximately at the same potential potential. That is to say, because the potential difference between the first positive energy storage node m ₁ and the second terminal P ₂ is V _pk , the second capacitor C ₂₁ will store a peak voltage V _pk , that is, the cross voltage V ₂₁ of the second capacitor C ₂₁ is Peak voltage V _pk .

Then, during the first positive half cycle of the AC voltage, the potential of the second terminal P ₂ is relatively high, and the potential difference between the second terminal P ₂ and the first terminal P ₁ is V _pk . Since the first terminal P ₁ and the first ground node GND ₁ have the same potential (ground potential), it can be known that the potential of the second terminal P ₂ is the peak voltage V _pk . It can be seen from the above description of the negative half cycle that the cross voltage V ₂₁ of the second capacitor C ₂₁ is the peak voltage V _pk , and the potential of the first positive energy storage node m ₁ at this time will be pushed up to twice the peak voltage V _pk , i.e. 2V _pk . At this time, the diode D ₁₂ is conducted forwardly, the first positive output node n ₁ and the first positive energy storage node m ₁ are approximately at the same potential, so that the first positive energy storage node m ₁ and the first ground node GND ₁ are connected The potential difference between them is 2V _pk . It can be known that the cross voltage V ₁₁ of the first capacitor C ₁₁ is 2V _pk , that is, twice the peak voltage V _pk . Similarly, it can be deduced that the cross voltage V ₂₂ of the second capacitor C ₂₂ is 2V _pk , and the cross voltage V ₁₂ of the first capacitor C ₁₂ is 2 V _pk , that is, both times the peak voltage V _pk .

In one example, a plurality of functional circuits in the testing device (not shown) can be electrically connected between the first ground node GND ₁ and the corresponding positive output node according to the required output voltage. For example, as shown in FIG. 1 , the plurality of functional circuits include a first functional circuit and a second functional circuit, which have corresponding loads L ₁ and L ₂ respectively. If the output voltage required by the load L ₁ to be driven is exactly the first positive output voltage V ₁ , the load L ₁ can be electrically connected between the first ground node GND ₁ and the first positive output node n ₁ to receive the first positive output voltage V 1 . _A positive output voltage V1. If the output voltage required by the load L ₂ to be driven is exactly the second positive output voltage V ₂ , the load L ₂ can be electrically connected between the first ground node GND ₁ and the second positive output node n ₂ to receive the second positive output voltage V 2 . Two positive output voltages V ₂ . Taking the above example as an example, the first positive output voltage V ₁ is the cross voltage V ₁₁ of the first capacitor C ₁₁ , which is twice the peak voltage V _pk (2V _pk ). On the other hand, the second positive output voltage V ₂ is the total span of all the first capacitors (the first capacitor C ₁₁ and the second capacitor C ₂₂ ) connected in series between the first ground node GND ₁ to the second positive output node n ₂ voltage, which is 4 times the peak voltage V _pk (4V _pk ). It can be seen from this that the power output module 1a can generate different voltages, and the first functional circuit and the second functional circuit only need to be electrically connected to corresponding output nodes.

It should be noted that the above-mentioned number of functional circuits, required output voltages and connection methods are only examples, and are not intended to limit the scope of the present invention. Please refer to FIG. 1 and FIG. 2 together. FIG. 2 is a schematic circuit diagram of a power output module according to another embodiment of the present invention. As shown in the figure, the embodiment of FIG. 2 exemplifies a power output module 1b, including a power supply 10 and a positive output circuit group 20b. The power output module 1b of FIG. 2 is substantially the same as the power output module 1a of FIG. 1, the only difference is that the positive output circuit group 20b in the power output module 1b of FIG. The structure further includes a third positive output node n ₃ , a third positive energy storage node m ₃ , a first capacitor C ₁₃ , a second capacitor C ₂₃ , a diode D ₃₁ , and a diode D ₃₂ . The first capacitor _C13 is set between the second positive output node _n2 and the _third positive output node n3, and the second capacitor _C23 is set between the second positive energy storage node _m2 and the third positive energy storage node _m3 In between, the anode and cathode of the diode D ₃₁ are respectively electrically connected to the second positive output node n ₂ and the third positive energy storage node m ₃ , and the anode and cathode of the diode D ₃₂ are respectively electrically connected to the third positive energy storage node m 3 . The energy node m ₃ and the third positive output node n ₃ .

Under the circuit structure of the power output module 1b as shown in FIG. 2 , the first positive output voltage V 1 is provided between the first ground node GND ₁ and the first positive output node n ₁ , and the first ground node GND ₁ and the second positive output voltage V ₁ are provided between the first ground node GND 1 and the first positive output node n 1 . The second positive output voltage V ₂ is provided between the output nodes n ₂ , and the third positive output voltage V ₃ is provided between the first ground node GND ₁ and the third positive output node n ₃ . That is, the power output module 1b can provide three positive output voltages, namely the first positive output voltage V ₁ , the second positive output voltage V ₂ and the third positive output voltage V ₃ .

The working principle of the first positive output voltage V ₁ , the second positive output voltage V ₂ and the third positive output voltage V provided by the power output module 1 b of FIG. 2 is the same as the first positive output voltage V 1 provided by the power output module 1 a of FIG. 1 . The working principles of generating the positive output voltage V ₁ and the second positive output voltage V ₂ are the same, so they are not described in detail. Those skilled in the art can know from the previous embodiment that the cross voltage V ₂₃ of the second capacitor C ₂₃ is 2V _pk , that is, twice the peak voltage V _pk . In addition, the cross voltage V ₁₃ of the first capacitor C ₁₃ is 2V _pk , which is also twice the peak voltage V _pk . Accordingly, the third positive output voltage V ₃ provided between the first ground node GND ₁ and the third positive output node n ₃ is equivalent to the cross voltage V ₁₁ of the first capacitor C ₁₁ and the cross voltage V ₁₂ of the first capacitor C ₁₂ And the sum of the cross voltage V ₁₃ of the first capacitor C ₁₃ , that is, 6 times the peak voltage V _pk (6V _pk ). It can be seen from the above that the power output module 1b can supply _three sets of different output voltages, so that it can correspond to _three kinds _{of loads} with different voltage requirements. 4V _pk as well as 6V _pk case.

It is worth mentioning that the power output module provided by the present invention is not limited to providing a positive output voltage. Those skilled in the art can understand that the positive and negative poles of the output voltage are related to the connection of the load. For example, the load L ₁ in FIG. 1 originally received twice the peak voltage V _pk (2V _pk ), but if the load L ₁ is reversely connected, the load L ₁ receives a negative twice the peak voltage. _Vpk ( _-2Vpk ). Alternatively, the order of the ground nodes and the output nodes in the first current path is reversed (for example, the first ground node GND ₁ in FIG. 1 is exchanged with the second positive output node n ₂ ) to form a negative output circuit group, which can A negative output voltage is provided at the output node. In addition, the present invention may also provide a positive output voltage and a negative output voltage at the same time, for example, simultaneously provide two groups of positive output circuit groups and negative output circuit groups in different order, which are not limited in this embodiment.

To sum up, the power output module provided by the present invention can utilize the voltage multiplier circuit to convert the AC voltage, and then provide a plurality of different output voltages from a plurality of output nodes. Thereby, a plurality of functional circuits inside the testing device can be electrically connected to the corresponding output nodes according to the required voltage. That is, the power output module provided by the present invention can reduce the number of voltage converters, which can not only reduce the volume of the test device, but also reduce the cost of the test device.

1a~1b: Power output module 10: Power source 20a~20b: Positive output circuit group _C11 ~ _C13 : First capacitor _C21 ~ _C23 : Second capacitor _D11 ~ _D31 : Diode _D12 ~D ₃₂ : diode GND ₁ : first ground node P ₁ : first terminal of power supply P ₂ : second terminal of power supply L ₁ ~L ₃ : load m ₁ ~m ₃ : positive energy storage node n ₁ ~n ₃ : Positive output node V ₁ ~V ₃ : Positive output voltage

FIG. 1 is a schematic circuit diagram of a power output module according to an embodiment of the present invention.

FIG. 2 is a schematic circuit diagram of a power output module according to another embodiment of the present invention.

none

1a: Power output module

10: Power

20a: Positive output circuit group

C ₁₁ ~C ₁₂ : the first capacitor

C ₂₁ ~C ₂₂ : the second capacitor

D ₁₁ ~D ₂₁ : Diode

D ₁₂ ~D ₂₂ : Diode

GND ₁ : The first ground node

P ₁ : The first end of the power supply

P ₂ : the second end of the power supply

L ₁ ~L ₂ : Load

m ₁ ~m ₂ : positive energy storage node

n ₁ ~n ₂ : Positive output node

V ₁ ~V ₂ : Positive output voltage

Claims (7)

An electric energy output module, comprising: a power supply for providing an alternating voltage; and A positive output circuit group, electrically connected to the power supply, includes a first ground node and N positive output nodes, the first ground node and the N positive output nodes are defined in a first current path, the first ground node An i-th positive output voltage is provided between the node and an i-th positive output node in the N positive output nodes; The positive output voltages between the first ground node and different positive output nodes among the N positive output nodes are different; where N is a positive integer, and i is a positive integer not greater than N. The power output module as claimed in claim 1, wherein the first ground node is electrically connected to a first end of the power supply, the first current path includes N first capacitors connected in series, and adjacent two of the first capacitors are connected in series. One of the N first capacitors is disposed between the positive output nodes. The power output module of claim 2, wherein one of the N first capacitors is disposed between the first ground node and a first positive output node of the N positive output nodes. The power output module of claim 3, wherein the i-th positive output voltage is a total voltage across the first capacitor connected in series between the first ground node and the i-th positive output node. The power output module of claim 3, wherein the positive output circuit group further comprises N positive energy storage nodes, one of N second capacitors is arranged between the adjacent positive energy storage nodes, and the One of the N second capacitors is provided between a first positive energy storage node of the N positive energy storage nodes and a second end of the power supply. The power output module of claim 5, wherein during a negative half cycle of the AC voltage, the AC voltage charges the N second capacitors, and during a positive half cycle of the AC voltage, the AC voltage and the N second capacitors charge the N first capacitors. The power output module of claim 1, wherein the AC voltage has a peak voltage, and the i-th positive output voltage is an integer multiple of the peak voltage.

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