TWI418974B - Dynamic adjustment circuit and computer system with dynamic adjustment circuit - Google Patents

Description

Dynamic adjustment circuit and computer system with dynamic adjustment circuit

The invention relates to a dynamic adjustment circuit and a computer system with a dynamic adjustment circuit, in particular to a dynamic adjustment circuit adjusted according to the voltage level and a computer system with a dynamic adjustment circuit.

In today's technological developments, different electronic products may be designed with different input voltages. For example, some electronic products require an input voltage of 19 volts, while some electronic products are set to 12 volts. As a result, different electronic products require different adapters to convert the alternating current into a direct current that meets the required voltage. Taking a notebook computer as an example, the voltage of the power signal required by the notebook computer of different manufacturers is different. Therefore, notebooks from different manufacturers are equipped with adapters that convert AC power into different voltages. Replacing the notebook requires a new adapter to be replaced at the same time, but the old adapter is not damaged, and today's adapters have a life of nearly 40,000 hours. However, because the voltage of the output power signal does not meet the specifications, the old adapter must be left idle or discarded. As a result, it will cause waste of resources and environmental pollution.

In view of this, it is therefore necessary to invent a dynamic adjustment circuit to solve the lack of prior art.

The main object of the present invention is to provide a dynamic adjustment circuit having an effect of adjusting according to the magnitude of the voltage.

Another primary object of the present invention is to provide a computer system having a dynamic adjustment circuit.

To achieve the above object, the dynamic adjustment circuit of the present invention includes a switching determination circuit, a boosting circuit, and a step-down circuit. The switching judgment circuit inputs a power signal. The boosting circuit is electrically connected to the switching judging circuit. The step-down circuit is electrically connected to the switching judgment circuit. The switching determination circuit determines whether the voltage of the power signal is lower than the set value. If the voltage is lower than the set value, the voltage of the power signal is boosted to a set value by the boosting circuit. If it is higher than the set value, the voltage of the power signal is stepped down to the set value by the step-down circuit, and the adjusted power signal is output.

The computer system of the present invention includes an adapter, a dynamic adjustment circuit, and a motherboard. The adapter receives the AC power signal for conversion to a power signal. The dynamic adjustment circuit is electrically connected to the adapter. The dynamic adjustment circuit includes a switching determination circuit, a boosting circuit, and a step-down circuit. The switching judgment circuit inputs a power signal. The boosting circuit is electrically connected to the switching judging circuit. The step-down circuit is electrically connected to the switching judgment circuit. The switching determination circuit determines whether the voltage of the power signal is lower than the set value. If the voltage is lower than the set value, the voltage of the power signal is boosted to a set value by the boosting circuit. If it is higher than the set value, the voltage of the power signal is stepped down to the set value by the step-down circuit, and the adjusted power signal is output. The motherboard is electrically connected to the dynamic adjustment circuit for receiving the adjusted power signal.

The above and other objects, features and advantages of the present invention will become more <

Please refer to FIG. 1 for the architecture diagram of the computer system of the present invention.

The computer system 1 of the present invention can be a notebook computer, but the invention is not limited thereto. The computer system 1 includes a dynamic adjustment circuit 11, an adapter 12 and a motherboard 13. The adapter 12 is configured to receive an alternating current transmitted through the socket to convert to a power signal of a constant voltage. The dynamic adjustment circuit 11 is electrically connected to the adapter 12 to receive a constant voltage power signal. The dynamic adjustment circuit 11 judges according to the voltage of the power signal to adjust the voltage of the power signal to a set value, wherein the set value is the working voltage that can be received by the computer system 1 when operating, and the computer system according to different specifications And has the corresponding set value. Finally, the adjusted power signal after boosting or stepping down is output to the motherboard 13. For example, the voltage of the power signal that is too high or too low is adjusted to 19 volts required for the motherboard 13 for use by the electronic components on the motherboard 13.

The dynamic adjustment circuit 11 includes a switching determination circuit 20, a boosting circuit 30, and a step-down circuit 40. The above circuits can be constructed by using an integrated circuit (IC), but the invention is not limited thereto.

The switching determination circuit 20 is electrically connected to the boosting circuit 30 and the step-down circuit 40, and is determined to be switched to the boosting circuit 30 for boosting or step-down circuit 40 according to the voltage of the power signal and the magnitude of the set value. Step down to match the settings of the motherboard 13. The boosting circuit 30 is configured to boost the voltage of the original power signal too low, and the step-down circuit 40 is configured to reduce the excessive voltage of the original power signal to output the adjusted power signal. Since the manner of voltage adjustment of the boosting circuit 30 and the step-down circuit 40 is well known to those skilled in the art, the principle will not be described herein.

Next, please refer to FIG. 2, which is a circuit diagram of the dynamic adjustment circuit of the present invention.

The switching determination circuit 20 of the present invention includes a comparator 21, a first switching module 22, a second switching module 23, and a diode 24 electrically connected to each other. The first switch module 22 and the second switch module 23 are metal oxide semi-transistors, but the invention is not limited thereto. The comparator 21 simultaneously inputs the power signal V1 and the set voltage value V2 for determining the magnitude of the voltage of the power signal V1 and the set voltage value V2. In the present embodiment, the set voltage value V2 is 19 volts, but the invention is not limited thereto.

When it is determined that the voltage of the power signal V1 is less than the set voltage value V2, the comparator 21 outputs a high potential; and when it is determined that the voltage of the power signal V1 is greater than the set voltage value V2, the comparator 21 outputs a low potential. The first switch module 22 and the second switch module 23 simultaneously input the power signal V1, the first switch module 22 is connected to the boost circuit 30, and the second switch module 23 is connected to the step-down circuit 40. The switching judging circuit 20 further includes a diode 24. In the embodiment, the diode 24 is connected in series between the comparator 21 and the first switching module 22, but the invention is not limited thereto. The switching determination circuit 20 is responsive to the diode 24 and reversely cuts off to determine that the comparator 21 can use the output high and low potentials to control the first switching module 22 and the second switching module 23, respectively.

The following is a more detailed description of the first switch module 22 being an N-type MOS transistor and the second switch module 23 being a P-type MOS transistor, but the first switch module 22 of the present invention is described below. And the second switch module 23 is not limited to the above components.

First, the comparator 21 simultaneously inputs the power signal V1 and the set voltage value V2. When it is determined that the power signal V1 is smaller than the set voltage value V2, the comparator 21 outputs a high potential to be transmitted to the first switch module 22 via the diode 24. By virtue of the characteristics of the N-type MOS transistor, the first switch module 22 can be controlled to conduct the power signal V1, and the second switch module 23 can be turned off. In this way, the power signal can be transmitted to the booster circuit 30 via the first switch module 22 for boosting.

When it is determined that the power signal V1 is greater than the set voltage value V2, the comparator 21 outputs a low potential to be transmitted to the second switch module 23. By virtue of the characteristics of the P-type MOS transistor, the second switch module 23 can be controlled to be turned on to transmit the power signal V1, and the first switch module 22 is turned off. In this way, the power signal V1 is transmitted to the step-down circuit 40 for step-down.

Therefore, by using the switching elements with different characteristics described above, the first switch module 22 and the second switch module 23 can be prevented from being turned on at the same time.

By using the dynamic adjustment circuit 11 described above, even when the adapter 12 having different output voltage values is installed in the computer system, the voltage of the power signal V1 outputted by the adapter 12 can be determined and input to the computer system 1 The voltage of the power signal V1 is adjusted to the voltage value required by the motherboard 13, and the adapter 12 is not required to be replaced to obtain the desired output voltage value.

To sum up, the present invention, regardless of its purpose, means and efficacy, shows its distinctive features of the prior art. You are requested to review the examination and express the patent as soon as possible. It should be noted that the various embodiments described above are merely illustrative for ease of explanation, and the scope of the invention is intended to be limited by the scope of the claims.

1‧‧‧ computer system

11‧‧‧ Dynamic adjustment circuit

12‧‧‧Adapter

13‧‧‧ motherboard

20‧‧‧Switch judgment circuit

30‧‧‧Boost circuit

40‧‧‧Buck circuit

21‧‧‧ Comparator

22‧‧‧First switch module

23‧‧‧Second switch module

24‧‧‧ diode

V1‧‧‧ power signal

V2‧‧‧Set voltage value

1 is a block diagram of a computer system of the present invention.

2 is a circuit diagram of a dynamic adjustment circuit of the present invention.

1. . . computer system

11. . . Dynamic adjustment circuit

12. . . Adapter

13. . . motherboard

20. . . Switching judgment circuit

30. . . Boost circuit

40. . . Buck circuit

Claims (6)

A dynamic adjustment circuit includes: a switching determination circuit for inputting a power signal; a boosting circuit electrically connected to the switching determining circuit; and a step-down circuit electrically connected to the switching determining circuit; The switching determination circuit determines whether the voltage of one of the power signals is lower than a set value, and if the value is lower than the set value, boosting the voltage of the power signal to the set value by using the boosting circuit; if the setting is higher than the setting The value is used to step down the voltage of the power signal to the set value, and output an adjusted power signal. The switch determining circuit further includes: a comparator that inputs the power signal and a Setting a voltage value to compare the voltage of the power signal with the set voltage value; a first switch module is electrically connected to the comparator and the booster circuit, and is connected to the power signal, when the power signal is When the voltage is less than the set voltage value, the comparator controls the first switch module to be turned on to transmit the power signal to the boost circuit; and a second switch module is coupled to the The comparator and the step-down circuit are electrically connected to the power supply signal, and when the voltage of the power signal is greater than the set voltage value, the comparator controls the second switch module to be turned on to transmit the power signal to the Buck circuit. The dynamic adjustment circuit of claim 1, wherein the first switch module is selected from one of a MOS transistor or an N-type MOS transistor. The dynamic adjustment circuit of claim 2, wherein the second switch module is selected from one of a MOS transistor or a P-type MOS transistor. A computer system with a dynamic adjustment circuit capable of receiving an AC power signal for conversion into a power signal, the computer system comprising: a dynamic adjustment circuit comprising: a switching determination circuit for inputting the power signal; and a boost circuit The circuit is electrically connected to the switching determining circuit; and a step-down circuit is electrically connected to the switching determining circuit, wherein the switching determining circuit determines whether a voltage of the power signal is lower than a set value, and if the setting is lower than the setting And using the boosting circuit to boost the voltage of the power signal to the set value; if the voltage is higher than the set value, the voltage of the power signal is stepped down to the set value by using the step-down circuit, and Outputting an adjusted power signal; wherein the switching determining circuit further comprises: a comparator inputting the power signal and a set voltage value to compare the voltage of the power signal with the set voltage value; a first switch mode a group electrically connected to the comparator and the boosting circuit, and connected to the power signal, when the voltage of the power signal is less than the set voltage value, The comparator module controls the first switch module to be turned on to transmit the power signal to the booster circuit; and a second switch module is electrically connected to the comparator and the buck circuit, and is connected to the power signal. When the voltage of the power signal is greater than the set voltage value, the comparator controls the second switch module to be turned on to transmit the power signal to the buck circuit; A motherboard is electrically connected to the dynamic adjustment circuit for receiving the adjusted power signal. The computer system with dynamic adjustment circuit according to claim 4, wherein the first switch module is selected from one of a metal oxide semi-transistor or an N-type gold-oxygen semiconductor. The computer system with dynamic adjustment circuit according to claim 5, wherein the second switch module is selected from one of a gold oxide semi-transistor or a P-type gold oxide semiconductor.