Storage device

Abstract

The invention provides a storage device. The storage device comprises a power monitoring circuit, a switching element, a first branch, a second branch and an output port. The power supply monitoring circuit has a voltage threshold range and determines whether the input voltage of the power supply is within the voltage threshold range, the common end of the switching element is connected to the power supply monitoring circuit, and the power supply monitoring circuit controls the common end of the switching element to be connected to the first switching end when the input voltage is within the voltage threshold range. The common end of the switching element is controlled to be connected to the second switching end when the input voltage exceeds a voltage threshold range, the first branch is connected to the first switching end so as to transmit the input voltage when the common end is connected to the first switching end, and the second branch is connected to the second switching end so as to transmit the input voltage when the common end is connected to the second switching end. When the common end of the switching element is connected to the second switching end, the input voltage is received, and the input voltage is converted into a compensation voltage by the power supply compensation circuit, so that the compensation voltage is within a voltage threshold range.

Description

Technical Field

[0001] The present invention relates to a storage device, and in particular to a storage device with better safety. Background Art

[0002] Currently, the interface of storage devices has developed from SATA to PCIe, which has increased the data transmission speed of storage devices. For example, the transmission speed of each channel of a storage device with a SATA3.0 interface is 6Gbps, while the transmission speed of each channel of a storage device with a PCIe4.0 interface can reach 16Gbps. In addition, a storage device with a PCIe4.0 interface can significantly increase the data transmission speed by increasing the number of channels.

[0003] The storage device is powered by the power supply of the system platform. When the data transmission speed of the storage device is greatly improved, the requirements for the stability of the power supply of the system platform are also increased. The use environment of the system platform will affect the stability of the power supply. For example, when the use environment of the power supply of the system platform is high temperature, or when other modules in the system platform are overloaded, it will affect the instantaneous power supply of the power supply and cause voltage surges or load reduction, thereby causing unexpected errors in the reading or writing of data in the storage unit in the storage device, resulting in damage to the data in the storage device and affecting the operation of the storage device, making the security of the storage device poor.

[0004] Therefore, how to develop a storage device that overcomes the above-mentioned shortcomings is an urgent need at present. Summary of the invention

[0005] The purpose of the present invention is to provide a storage device, which uses a power monitoring circuit to confirm whether the input voltage provided by the power supply is within the voltage threshold range, and controls the switching state of the switching element according to the confirmation result, directly transmits the input voltage to the output port via the first branch when the input voltage is within the voltage threshold range, and uses the power compensation circuit of the second branch to convert the input voltage into a compensation voltage when the input voltage exceeds the voltage threshold range, and transmits it to the output port. Therefore, the storage device of the present invention can convert the input voltage into a compensation voltage to control it within the voltage threshold range when the input voltage provided by the power supply is abnormal, such as when the input voltage generates a surge or load reduction, so that the voltage provided to the storage unit can be in a stable state, and the data in the storage unit is not easily damaged, so that the storage device can operate normally, thereby improving the safety and product value of the storage device.

[0006] To achieve the above-mentioned purpose, a more general embodiment of the present invention is to provide a storage device that receives an input voltage provided by a power supply, wherein the storage device includes a power monitoring circuit, a switching element, a first branch, a second branch, and an output port. The power monitoring circuit receives the input voltage provided by the power supply and has a voltage threshold range, wherein the power monitoring circuit confirms whether the input voltage is within the voltage threshold range. The switching element includes a common end, a first switching end, and a second switching end, wherein the common end is connected to the power monitoring circuit, wherein the power monitoring circuit controls the common end of the switching element to be connected to the first switching end when the input voltage is within the voltage threshold range, and the power monitoring circuit controls the common end of the switching element to be connected to the second switching end when the input voltage exceeds the voltage threshold range. The first branch is connected to the first switching end of the switching element, wherein the first branch receives and transmits the input voltage when the common end of the switching element is connected to the first switching end. The second branch is connected to the second switching end of the switching element, and includes a power compensation circuit, wherein the second branch receives the input voltage when the common end of the switching element is connected to the second switching end, and uses the power compensation circuit to convert the input voltage into a compensation voltage so that the compensation voltage is within the voltage threshold range. The output port is connected to the first branch and the second branch to receive an input voltage or a compensation voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic diagram of the circuit structure of the storage device of the present invention;

[0008] Figure 2A for Figure 1 A voltage waveform diagram of a first embodiment of an input voltage received by the storage device shown;

[0009] Figure 2B for Figure 2A The voltage waveform diagram of the input voltage converted into the compensation voltage shown;

[0010] Figure 3A for Figure 1 A voltage waveform diagram of a second embodiment of an input voltage received by the storage device shown; and

[0011] Figure 3B for Figure 3A The voltage waveform shown is the voltage waveform of the input voltage converted to the compensation voltage.

[0012] The reference numerals are as follows:

[0013] 1: Storage device

[0014] 2: Power supply

[0015] 3: Power supply monitoring circuit

[0016] 4: Switching components

[0017] 41: Common terminal

[0018] 42: First switch terminal

[0019] 43: Second switch terminal

[0020] 5: First branch

[0021] 51: First End

[0022] 52: Second End

[0023] 6: Second branch

[0024] 61: First End

[0025] 62: Second End

[0026] 63: Power supply compensation circuit

[0027] 7: Output port

[0028] 8: Storage unit

[0029] t1, t2: time DETAILED DESCRIPTION

[0030] Some typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can be varied in various ways without departing from the scope of the present invention, and the description and drawings are essentially for illustrative purposes rather than for limiting the present invention.

[0031] See also Figure 1 , which is a schematic diagram of the circuit structure of the storage device of the present invention. As shown in the figure, the storage device 1 of the present invention receives the input voltage provided by the power supply 2, wherein the normal voltage range of the input voltage provided by the power supply 2 is between 3.3V±5%, that is, between 3.465V and 3.135V, or the normal voltage range is between 5V±10%, that is, between 5.5V and 4.5V, and when the input voltage provided by the power supply 2 generates a surge or load reduction, the input voltage may exceed the normal voltage range. The storage device 1 can be a fixed hard disk, and its interface specification can be SATA, M.2, E1.S or mSATA, and the storage device 1 includes a power monitoring circuit 3, a switching element 4, a first branch 5, a second branch 6, an output port 7 and a plurality of storage units 8.

[0032] The power monitoring circuit 3 is connected to the power supply 2 to receive the input voltage provided by the power supply 2, and the power monitoring circuit 3 has a preset voltage threshold range, the voltage threshold range has a voltage upper limit value and a voltage lower limit value, and the power monitoring circuit 3 further confirms whether the input voltage provided by the power supply 2 is within the voltage threshold range, that is, confirms whether the input voltage provided by the power supply 2 is between the voltage upper limit value and the voltage lower limit value. In this embodiment, the voltage threshold range of the power monitoring circuit 3 must be greater than the normal voltage range of the input voltage provided by the power supply 2. For example, when the normal voltage range of the input voltage provided by the power supply 2 is between 3.465V and 3.135V, the voltage threshold range of the power monitoring circuit 3 must be between 3.3V±10%, that is, the voltage upper limit value is 3.63V and the voltage lower limit value is 2.97V. When the normal voltage range of the input voltage provided by the power supply 2 is between 5.5V and 4.5V, the voltage threshold range of the power monitoring circuit 3 must be between 5V±20%, that is, the voltage upper limit value is 6V and the voltage lower limit value is 4V.

[0033] The switching element 4 may be a single-axis double-cut switch, and includes a common terminal 41, a first switching terminal 42, and a second switching terminal 43. The common terminal 41 of the switching element 4 is connected to the power monitoring circuit 3, wherein the power monitoring circuit 3 controls the switching state of the switching element 4 according to the result of determining whether the input voltage provided by the power supply 2 is within the voltage threshold range. When the power monitoring circuit 3 determines that the input voltage is within the voltage threshold range, the common terminal 41 of the switching element 4 is controlled to be connected to the first switching terminal 42, such as Figure 1 The solid line between the common terminal 41 of the switching element 4 and the first switching terminal 42 is shown. When the power monitoring circuit 3 determines that the input voltage exceeds the voltage threshold range, the common terminal 41 of the switching element 4 is controlled to be connected to the second switching terminal 43, such as Figure 1 The dotted line between the common terminal 41 and the first switching terminal 42 of the switching element 4 is shown.

[0034] The first branch 5 includes a first end 51 and a second end 52, wherein the first end 51 of the first branch 5 is connected to the first switching end 42 of the switching element 4, wherein the first branch 5 receives and transmits the input voltage when the common end 41 of the switching element 4 is connected to the first switching end 42. The second branch 6 includes a first end 61, a second end 62 and a power compensation circuit 63, wherein the first end 61 of the second branch 6 is connected to the second switching end 43 of the switching element 4, and the power compensation circuit 63 is located between the first end 61 and the second end 62, wherein the second branch 6 receives the input voltage when the common end 41 of the switching element 4 is connected to the second switching end 43, and converts the input voltage into a compensation voltage by using the power compensation circuit 63, so that the compensation voltage is within the voltage threshold range.

[0035] In one embodiment, the power compensation circuit 63 may include a buck converter, a boost converter, and an energy storage element (not shown) to adjust an input voltage higher than the voltage upper limit to a compensation voltage within a voltage threshold range, or adjust an input voltage lower than the voltage lower limit to a compensation voltage within a voltage threshold range. For example, Figure 2A As shown in FIG. 1 , when the input voltage provided by the power supply 2 is higher than the voltage upper limit value of the voltage threshold range, that is, the input voltage is Figure 2A Between time t1 and t2, the power compensation circuit 63 uses a step-down converter to adjust the input voltage down to a compensation voltage, which is lower than the voltage upper limit and within the voltage threshold range, such as Figure 2B For example, Figure 3A As shown in FIG. 1 , when the input voltage provided by the power supply 2 is lower than the voltage lower limit of the voltage threshold range, that is, the input voltage is Figure 3A Between time t1 and t2, the power compensation circuit 63 uses the boost converter to adjust the input voltage to a compensation voltage that is higher than the voltage lower limit and within the voltage threshold range, such as Figure 3B shown.

[0036] The output port 7 is connected to the second end 52 of the first branch 5 and the second end 62 of the second branch 6, wherein when the common end 41 of the switching element 4 is connected to the first switching end 42, the output port 7 receives the input voltage via the first branch 5, and when the common end 41 of the switching element 4 is connected to the second switching end 43, the output port 7 receives the compensation voltage converted by the power compensation circuit 63 via the second branch 6. Each storage unit 8 can be a charge trap flash memory (CTL), a NAND flash memory (NAND Flash), a dynamic random access memory (DRAM) or a general purpose input / output memory (GPIO), and is connected to the output port 7 to receive the input voltage or the compensation voltage for power supply.

[0037] As can be seen from the above, the storage device of the present invention uses a power monitoring circuit to confirm whether the input voltage provided by the power supply is within the voltage threshold range, and controls the switching state of the switching element according to the confirmation result. When the input voltage is within the voltage threshold range, the input voltage is directly transmitted to the output port via the first branch, and when the input voltage exceeds the voltage threshold range, the power compensation circuit of the second branch is used to convert the input voltage into a compensation voltage and transmit it to the output port. Therefore, the storage device of the present invention can convert the input voltage into a compensation voltage to control it within the voltage threshold range when the input voltage provided by the power supply is abnormal, such as when the input voltage generates a surge or load reduction, so that the voltage provided to the storage unit can be in a stable state, and the data in the storage unit is not easily damaged, so that the storage device can operate normally, thereby improving the safety and product value of the storage device.

Claims

1. A storage device, receiving an input voltage provided by a power source, wherein the storage device comprises: a power monitoring circuit, receiving the input voltage provided by the power supply and having a voltage threshold range, wherein the power monitoring circuit confirms whether the input voltage is within the voltage threshold range; a switching element, comprising a common terminal, a first switching terminal and a second switching terminal, the common terminal being connected to the power monitoring circuit, wherein the power monitoring circuit controls the common terminal of the switching element to be connected to the first switching terminal when the input voltage is within the voltage threshold range, and the power monitoring circuit controls the common terminal of the switching element to be connected to the second switching terminal when the input voltage exceeds the voltage threshold range; a first branch connected to the first switching end of the switching element, wherein the first branch receives and transmits the input voltage when the common end of the switching element is connected to the first switching end; a second branch connected to the second switching end of the switching element and comprising a power compensation circuit, wherein the second branch receives the input voltage when the common end of the switching element is connected to the second switching end, and converts the input voltage into a compensation voltage by using the power compensation circuit, so that the compensation voltage is within the voltage threshold range; as well as An output port is connected to the first branch and the second branch to receive the input voltage or the compensation voltage.

2. The storage device as described in claim 1, wherein the voltage threshold range of the power monitoring circuit has a voltage upper limit value and a voltage lower limit value, wherein the power compensation circuit includes a buck converter for adjusting the input voltage to drop to the compensation voltage when the input voltage is higher than the voltage upper limit value, so that the compensation voltage is within the voltage threshold range.

3. The storage device as described in claim 1, wherein the voltage threshold range of the power monitoring circuit has an upper voltage limit and a lower voltage limit, and wherein the power compensation circuit includes a boost converter for adjusting the input voltage to rise to the compensation voltage when the input voltage is lower than the lower voltage limit, so that the compensation voltage is within the voltage threshold range. 4 . The storage device as claimed in claim 2 , wherein the upper voltage limit is 3.63V and the lower voltage limit is 2.97V, or the upper voltage limit is 6V and the lower voltage limit is 4V. 5 . The storage device as claimed in claim 1 , further comprising at least one storage unit connected to the output port to receive the input voltage or the compensation voltage for power supply. 6 . The storage device as claimed in claim 5 , wherein the at least one storage unit is a charge trapping flash memory, a NAND flash memory, a dynamic random access memory or a general purpose input-output memory.

7. A storage device as described in claim 1, wherein the first branch includes a first end and a second end, the first end of the first branch is connected to the first switching end of the switching element, and the second end of the first branch is connected to the output port, the second branch includes a first end and a second end, the first end of the second branch is connected to the second switching end of the switching element, and the second end of the second branch is connected to the output port, wherein the power compensation circuit is located between the first end and the second end of the second branch. The storage device as claimed in claim 1 , wherein the switching element is a single-axis double-cut switch.

9. The storage device as claimed in claim 1, wherein the storage device is a solid state drive.

10. The storage device as claimed in claim 1, wherein an interface specification of the storage device is SATA, M.2, E1.S or mSATA.

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