TWI418965B - Temperature balance device and operation system utilizing the samepower supply device - Google Patents

Description

Temperature balance device and operating system

The present invention relates to an operating system, and more particularly to an operating system having a temperature balancing device.

With the rapid development of technology, electronic products are developing in the direction of high power and light, thin, short, small and multi-functional. In general, electronic products include many passive components as well as active components. An active component generally refers to a transistor and an integrated circuit (IC). The integrated circuit is a combination of a plurality of transistors and has a function of signal amplification. In contrast, Passive Components generally refer to resistors, capacitors, and inductors.

In order to reduce the size of electronic products, electronic components (passive components and active components) inside electronic products are becoming smaller and smaller. However, in the case where the volume of the electronic component becomes small, the electronic component is easily affected by temperature.

The present invention provides a temperature balancing device coupled to a power supply device and includes a first sensing module, a second sensing module, and a processing module. The first sensing module generates a first detection signal according to the ambient temperature of the power supply device. The second sensing module generates a second detection signal according to the ambient temperature of the power supply device. The processing module processes the first and second detection signals, and generates a first balance signal and a second balance signal to the power supply device according to the processed result.

The invention further provides an operating system comprising a power supply device, a load and a temperature balance device. The power supply device generates an output voltage. The load operates according to the output voltage. The temperature balancing device includes a first sensing module, a second sensing module, and a processing module. The first sensing module generates a first detection signal according to the ambient temperature of the power supply device. The second sensing module generates a second detection signal according to the ambient temperature of the power supply device. The processing module processes the first and second detection signals, and generates a first balance signal and a second balance signal to the power supply device according to the processed result.

In order to make the features and advantages of the present invention more comprehensible, the preferred embodiments are described below, and are described in detail with reference to the accompanying drawings.

Figure 1 is a schematic diagram of the operating system of the present invention. As shown, the operating system 100 includes a power supply device 110, a load 130, and a temperature balancing device 150. The power supply device 110 generates an output voltage V _OUT . The load 130 operates in accordance with the output voltage V _OUT . The temperature balance device 130 generates balance signals S _P1 and S _P2 to the power supply device in accordance with the temperature around the power supply device 110.

In the embodiment, the temperature balancing device 150 includes sensing modules 151 and 153 and a processing module 155. The sensing modules 151 and 153 respectively generate detection signals S _D1 and S _D2 according to the ambient temperature of the power supply device 110 . The processing module 155 processes the detection signals S _D1 and S _D2 and generates balanced signals S _P1 and S _P2 according to the processed results.

In a possible embodiment, the number of sensing modules is related to the internal structure of the power supply device 110, as will be described in detail later. In addition, in the present embodiment, the temperature balance device 150 has the sensing modules 151 and 153, but is not intended to limit the present invention. In other embodiments, the temperature balancing device 150 can have more than three sensing modules.

Figure 2 is a possible embodiment of a processing module of the present invention. As shown, the processing module 155 includes a current generating unit 210, a current mirror 230, and a computing unit 250. The current generating unit 210 generates a reference current I _REF according to the reference signal S _PREF . In the present embodiment, the current generating unit 210 is a comparator 211. When the non-inverting (+) input of the comparator 211 receives a predetermined level S _PR and the inverting (-) input thereof receives the reference signal S _PREF , the output of the comparator 211 can generate a reference current I _REF .

The current mirror 230 generates current signals I ₁ and I ₂ based on the reference current I _REF . The sensing module 151 generates the detection signal S _D1 according to the current signal I ₁ and the ambient temperature of the power supply device 110. Similarly, the sensing module 153 generates the detection signal S _D2 according to the current signal I ₂ and the ambient temperature of the power supply device 110. In a possible embodiment, the current signal I ₁ is equal to the current signal I ₂ .

In another possible embodiment, the sensing modules 151 and 153 have thermistors R _PTS1 and R _{PTS2 , respectively} . The impedance of the thermistors R _PTS1 and R _PTS2 varies with temperature. When the current signal I ₁ flows through the thermistor R _PTS1 , the node N _{271 will} have a voltage level. In this embodiment, the voltage level of the node N ₂₇₁ is the detection signal S _D1 . Similarly, when the current signal I ₂ flows through the thermistor R _PTS2 , the node N _{272 will} have a voltage level. In this embodiment, the voltage level of the node N ₂₇₂ is the detection signal S _D2 .

Calculating unit 250 according to the detection signal S _D1 and S _D2, to obtain an average value, and based on the average value, respectively, processed detection signal S _D1 and S _D2, for generating balanced signals S _P1 and S _P2. In one embodiment, computing unit 250 averages signals S _D1 and S _D2 to obtain the average.

In this embodiment, the calculating unit 250 adjusts the detection signals S _D1 and S _D2 according to the average value, and generates balanced signals S _P1 and S _P2 having a current format according to the adjusted result, but is not used to limit the present. invention. In other embodiments, computing unit 250 may utilize other means to generate a balanced signal in either current or voltage format.

Figure 3 is a possible embodiment of a power supply unit. As shown, the power supply device 110 includes a Pulse Width Modulation (PWM) module 310, signal generation modules 330, 350, and a load storage module 370. In the present embodiment, the power supply device 110 has two signal generating modules, but is not intended to limit the present invention. In other embodiments, the power supply device 110 has more than three signal generation modules.

In another possible embodiment, the number of sensing modules shown in FIG. 1 is related to the number of signal generating modules of the power supply device 110. In a possible embodiment, the sensing module is configured to detect the ambient temperature of the signal generating module. Therefore, in this example, the number of sensing modules is equal to the number of signal generating modules.

The signal generation module 330 generates a phase signal PH1 according to the control signal group S _C1 generated by the pulse width modulation module 310. The signal generation module 350 generates a phase signal PH2 according to the control signal group S _C2 generated by the pulse width modulation module 310. Since the signal generating modules 330 and 350 have the same circuit structure, the following is only the signal generating module 330 as an example, and the content circuit structure thereof will be described.

In this embodiment, the signal generating module 330 includes a switching unit 331 and an energy storage unit 333. As shown in the figure, the energy storage unit 333 can be an inductor coupled between the switching unit 331 and the pressure accumulating unit 370. In a possible embodiment, the sensing module 151 shown in FIGS. 1 and 2 generates the detection signal S _D1 according to the ambient temperature of the energy storage unit 333 or the switching unit 331. Similarly, the sensing module 153 shown in FIGS. 1 and 2 can generate the detection signal S _D2 according to the ambient temperature of the energy storage unit 353 or the switching unit 351.

In the present embodiment, the switching unit 331 includes transistors N1 and N2. The gate of the transistor N1 receives the switching signal S _S1 in the control signal group S _C1 , the drain of which receives the operating voltage VDD , and the source of which is coupled to the energy storage unit 333 and the pulse width modulation module 310 . The gate of the transistor N2 receives the switching signal S _S2 in the control signal group S _C1 , the drain of which is coupled to the energy storage unit 333 , and the source thereof receives the operating voltage GND . In a possible embodiment, the operating voltage GND is less than the operating voltage VDD.

The voltage storage module 370 provides an output voltage V _OUT according to the phase signals PH1 and PH2. In this embodiment, the pressure storage module 370 is a capacitor 371. Phase signals PH1 and PH2 charge capacitor 371 such that capacitor 371 provides an output voltage V _OUT .

In addition, the power supply device 110 further includes feedback resistors 391 and 393. The feedback resistor 391 is coupled between the signal generating module 330 and the feedback terminal ISEN1 of the pulse width modulation module 310. The feedback resistor 391 can generate a feedback current I _F1 to the pulse width modulation module 310 according to the phase signal PH1. In this embodiment, the pulse width modulation module 310 can receive the balanced signal S _P1 generated by the processing module 155 through the feedback terminal ISEN1. In this embodiment, the signal received by the pulse width modulation module 310 through the feedback terminal ISEN1 is the sum of the feedback current I _F1 and the balance signal S _P1 . The pulse width modulation module 310 transmits the signal received by the feedback terminal ISEN1. Similarly, the feedback resistor 393 is coupled between the signal generation module 350 and the feedback terminal ISEN2 of the pulse width modulation module 310. The feedback resistor 393 can generate a feedback current I _F2 to the pulse width modulation module 310 according to the phase signal PH2. In this embodiment, the pulse width modulation module 310 can receive the balance signal S _P2 generated by the processing module 155 through the feedback terminal ISEN2. In this embodiment, the signal received by the pulse width modulation module 310 through the feedback terminal ISEN2 is the sum of the feedback current I _F2 and the balance signal S _P2 .

Since the phase signals PH1 and PH2 are susceptible to temperature changes, in the present embodiment, the sensing modules 151 and 153 detect the temperature around the phase signal generating modules 330 and 350, and according to the detection result, Balance signals S _P1 and S _{P2 are} generated. Since the balance signals S _P1 and S _{P2 are} related to the temperature around the phase signal generating modules 330 and 350, the pulse width modulation module 310 can appropriately adjust and control according to the sum of the feedback current I _F1 and the balance signal S _P1 . Signal group S _C1 . Similarly, the pulse width modulation module 310 can appropriately adjust the control signal group S _C2 according to the sum of the feedback current I _F2 and the balance signal S _P2 .

Figure 4A is a schematic diagram of phase signals PH1 and PH2. In this embodiment, the phase signals PH1 and PH2 differ by 180 degrees. In Fig. 3, if the power supply device 110 has four signal generating modules, four phase signals can be generated. In a possible embodiment, the four phase signals can be as shown in FIG. 4B. In Figure 4B, the adjacent phases are 90 degrees out of phase.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100. . . operating system

110. . . Power supply unit

130. . . load

150. . . Temperature balance device

151, 153. . . Sensing module

155. . . Processing module

210. . . Current generating unit

230. . . Current mirror

250. . . Computing unit

211. . . Comparators

R _PTS1 , R _PTS2 . . . Thermistor

310. . . Pulse width modulation module

370. . . Pressure storage module

371. . . capacitance

331, 351. . . Switching unit

333, 353. . . Energy storage unit

N1~N4. . . Transistor

391, 393. . . Feedback resistor

330, 350. . . Signal generation module

Figure 1 is a schematic diagram of the operating system of the present invention.

Figure 2 is a possible embodiment of a processing module of the present invention.

Figure 3 is a possible embodiment of a power supply unit.

Figures 4A and 4B are schematic diagrams of phase signals.

100. . . operating system

110. . . Power supply unit

130. . . load

150. . . Temperature balance device

151, 153. . . Sensing module

155. . . Processing module

Claims (17)

A temperature balancing device is coupled to a power supply device, the temperature balancing device includes: a first sensing module, generating a first detection signal according to an ambient temperature of the power supply device; and a second sensing module And generating a second detection signal according to the ambient temperature of the power supply device; and a processing module, comprising: a current generating unit, generating a reference current according to a reference signal; and a current mirror according to the reference current, Generating a first current signal and a second current signal, wherein the first sensing module generates the first detection signal according to the first current signal and an ambient temperature of the power supply device; and a calculating unit, according to The first and second detection signals obtain an average value, and according to the average value, the first and second detection signals are respectively processed to generate a first balance signal and a second balance signal to the power source. Supply device. The temperature balancing device of claim 1, wherein the first and second current signals are the same. The temperature balancing device of claim 1, wherein the first sensing module is a thermistor. The temperature balancing device of claim 3, wherein the first detection signal is a voltage level. An operating system includes: a power supply device, including: a pulse width modulation module generates a first control signal group and a second control signal group; a first signal generation module generates a first phase signal according to the first control signal group; a second signal Generating a module, generating a second phase signal according to the second control signal group; and a voltage storage module, providing an output voltage according to the first and second phase signals; and a load acting according to the output voltage And a temperature balancing device, comprising: a first sensing module, generating a first detection signal according to an ambient temperature of the power supply device; and a second sensing module according to an ambient temperature of the power supply device Generating a second detection signal; and a processing module, processing the first and second detection signals, and generating a first balance signal and a second balance signal to the power supply device according to the processed result, The pulse width modulation module has a first feedback terminal and a second feedback terminal. The first feedback terminal is coupled to the first signal generation module and receives the first balance signal, and the second Feedback end coupling The second signal generating module, and receiving the second balanced signal. The operating system of claim 5, wherein the pressure storage module is a capacitor. The operating system of claim 5, wherein the power supply device further comprises: a first feedback resistor coupled between the first signal generating module and the first feedback terminal; and a second feedback resistor coupled to the second signal generating module and the second back Between the grants. The operating system of claim 5, wherein the first signal generating module comprises: a first switching unit that receives the first control signal group; and a first energy storage unit coupled to the first Between the switching unit and the pressure accumulating unit. The operating system of claim 8, wherein the second signal generating module comprises: a second switching unit that receives the second control signal group; and a second energy storage unit coupled to the second Between the switching unit and the pressure accumulating unit. The operating system of claim 9, wherein the first sensing module generates the first detection signal according to the ambient temperature of the first energy storage unit, and the second sensing module is configured according to the first The ambient temperature of the second energy storage unit generates the second detection signal. The operating system of claim 8, wherein the first switching unit comprises: a first transistor, the gate receiving one of the first switching signals in the first control signal group, and the drain receiving one a first operating voltage, the source of which is coupled to the first energy storage unit; and a second transistor whose gate receives a second switching signal of the first control signal group, the drain of which is coupled to the first Energy storage unit, its source receiving a second operating voltage, the second operating voltage being lower than the first operating voltage. The operating system of claim 5, wherein the first sensing module is a thermistor. The operating system of claim 5, wherein the processing module comprises: a current generating unit that generates a reference current according to a reference signal; and a current mirror that generates a first current according to the reference current a signal and a second current signal. The operating system of claim 13, wherein the first sensing module generates the first detection signal according to the first current signal and an ambient temperature of the power supply device. The operating system of claim 14, wherein the first detection signal is a voltage level. The operating system of claim 15, wherein the processing module further comprises: a calculating unit, obtaining an average value according to the first and second detecting signals, and processing the average according to the average value The first and second detection signals are used to generate the first and second balance signals. A power supply device includes: a first signal generating module, generating a first phase signal according to a first control signal group; and a second signal generating module generating a second according to a second control signal group a phase sensing unit, wherein the sensing module generates an ambient temperature of the module according to the first signal, Generating a first detection signal, and generating a second detection signal according to the ambient temperature of the second signal generation module; a calculation unit, according to the first and second detection signals, obtaining an average value, and The first and second detection signals are respectively processed to generate a first balanced signal and a second balanced signal according to the average value; and a pulse width modulation module according to the first and second balanced signals And adjusting the first and second control signal groups respectively.