TLVR fault detection self-checking device and detection self-checking method thereof

Abstract

The present invention relates to the field of TLVR fault detection technology, and in particular to a TLVR fault detection self-checking device and a detection self-checking method thereof. The TLVR fault detection self-checking device comprises: a load end, a sampling module, a detection module, a main control module and a controller power conversion module; the sampling module is connected to the load end, the detection module is connected to the sampling module, the main control module is connected to the detection module, and the controller power conversion module is connected to the main control module and the load end. The present invention can autonomously determine whether the function of the TLVR is normal and can issue an abnormal alarm. In addition, the defects of the TLVR can be better discovered and repaired at the manufacturing end, so as to prevent defective TLVR products from entering the market and causing quality problems.

Description

Technical Field

[0001] The present invention relates to the field of TLVR fault detection technology, and in particular to a TLVR fault detection self-checking device and a detection self-checking method thereof. Background Art

[0002] In the design of DC-DC in the motherboard of the server / communication field, TLVR (trans-inductor voltage regulator) technology has begun to be widely used because of its advantages such as improving conversion efficiency and saving output capacitor quantity / space and cost compared with traditional solutions. However, due to the structural limitations of TLVR inductors, it is difficult to guarantee or discover some defects in the current manufacturing process, such as cold solder joints / empty solder joints / open circuits, etc.; other defects (cold solder joints / open circuits) will only turn TLVR technology into conventional technology, and the motherboard will start normally. In addition, some functional tests of factory shipments may not necessarily discover this problem. When shipped to the client, the use of some extreme conditions and long-term operation will cause quality problems. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a TLVR fault detection self-checking device and a detection self-checking method thereof.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The fault detection self-checking device of TLVR includes: a load end, a sampling module, a detection module, a main control module and a controller power conversion module; the sampling module is connected to the load end, the detection module is connected to the sampling module, the main control module is connected to the detection module, and the controller power conversion module is connected to the main control module and the load end.

[0006] Its further technical solution is: the sampling module includes a TLVR inductor L1, an Lc inductor L2 and a current detection resistor R548; the TLVR inductor L1 is connected to the load end, the Lc inductor L2 is connected to the TLVR inductor L1, one end of the current detection resistor R548 is connected to the Lc inductor L2, and the other end is connected to the detection module.

[0007] The further technical solution is: the model of the TLVR inductor L1 is SLA47436A-100L, and the model of the Lc inductor L2 is SLA2843B-120L.

[0008] A further technical solution is as follows: the detection module includes a current detection IC chip U33, and the model of the current detection IC chip U33 is 1208-00855.

[0009] A further technical solution is as follows: the main control module comprises a main control chip U1, and the model of the main control chip U1 is BMC AST2600.

[0010] Its further technical solution is: the controller power conversion module includes a controller chip U7, and the model of the controller chip U7 is 1220-80098.

[0011] A further technical solution is as follows: the load end includes a load chip U5, and the model of the load chip U5 is 1220-80038.

[0012] The fault detection self-checking method of TLVR includes the following steps:

[0013] The controller power conversion module supplies power to the load end to obtain a power supply current;

[0014] The sampling module obtains the current at the load end to complete the sampling current;

[0015] The detection module amplifies the sampled current to obtain an amplified current;

[0016] The main control module compares the amplified current with the supply current to obtain a detection self-test result.

[0017] Its further technical solution is: the main control module compares the amplified current with the power supply current to obtain a detection self-test result step. If the ratio of the amplified current to the power supply current meets the set value, it is determined that the TLVR function is normal; if the ratio of the amplified current to the power supply current does not meet the set value, it is determined that the TLVR function is abnormal and an abnormal alarm is issued.

[0018] Compared with the prior art, the beneficial effects of the present invention are: it can independently determine whether the function of the TLVR is normal and can issue an abnormal alarm. In addition, the defects of the TLVR can be better discovered and repaired at the manufacturing end, avoiding defective TLVR products from entering the market and causing quality problems.

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1A schematic block diagram of a TLVR fault detection and self-checking device provided in an embodiment of the present invention;

[0022] Figure 2 A specific circuit diagram of a main control module provided by an embodiment of the present invention;

[0023] Figure 3 A specific circuit diagram of a controller power conversion module provided by an embodiment of the present invention;

[0024] Figure 4 A specific circuit diagram of a load end, a sampling module, and a detection module provided by an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a flow chart of a TLVR fault detection self-checking method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0033] See also Figure 1 , Figure 1 A schematic block diagram of a fault detection and self-checking device for TLVR provided in an embodiment of the present invention, the device can independently determine whether the function of the TLVR is normal and can issue an abnormal alarm. In addition, the defects of the TLVR can be better discovered and repaired at the manufacturing end, thereby preventing defective TLVR products from entering the market and causing quality problems.

[0034] See also Figure 1The above-mentioned TLVR fault detection self-test device includes: a load end 10, a sampling module 20, a detection module 30, a main control module 40 and a controller power conversion module 50; the sampling module 20 is connected to the load end 10, the detection module 30 is connected to the sampling module 20, the main control module 40 is connected to the detection module 30, and the controller power conversion module 50 is connected to the main control module 40 and the load end 10.

[0035] See also Figures 1 to 4 As shown, the sampling module 20 includes a TLVR inductor L1, an Lc inductor L2 and a current detection resistor R548; the TLVR inductor L1 is connected to the load end, the Lc inductor L2 is connected to the TLVR inductor L1, one end of the current detection resistor R548 is connected to the Lc inductor L2, and the other end is connected to the detection module.

[0036] Specifically, the TLVR inductor L1 is connected to the load terminal 10 via the terminal pin SW, and the current output is stable.

[0037] Specifically, in this embodiment, the model of the TLVR inductor L1 is SLA47436A-100L, and the model of the Lc inductor L2 is SLA2843B-120L.

[0038] See also Figure 4 As shown, the detection module 30 includes a current detection IC chip U33, and the model of the current detection IC chip U33 is 1208-00855.

[0039] Specifically, pin 3 of the TLVR inductor L1 is connected to pin 1 of the Lc inductor L2, pin 2 of the Lc inductor L2 is connected to pin 1 of the current detection resistor R548, pin 2 of the current detection resistor R548 is connected to pin 1 of the resistor R546, and pin 2 of the resistor R546 is connected to pin 9 of the current detection IC chip U33.

[0040] See also Figure 2 As shown, the main control module 40 includes a main control chip U1, and the model of the main control chip U1 is BMCAST2600.

[0041] Specifically, the main control chip U1 reads the current information through the terminal pin BMC_I2C_SCL10 and the terminal pin BMC_I2C_SDA10.

[0042] See also Figure 3 As shown, the controller power conversion module 50 includes a controller chip U7, and the model of the controller chip U7 is 1220-80098.

[0043] Specifically, the controller chip U7 is connected to the main control chip U1 through the terminal pin BMC_I2C_SCL10 and the terminal pin BMC_I2C_SDA10.

[0044] See also Figure 4 As shown, the load end 10 includes a load chip U5, and the model of the load chip U5 is 1220-80038.

[0045] Specifically, the load chip U5 is connected to the terminal pin 1 of the TLVR inductor L1 through the terminal pin SW.

[0046] See also Figure 5 As shown, the present invention also discloses a TLVR fault detection self-checking method, comprising the following steps:

[0047] S1, the controller power conversion module supplies power to the load end to obtain the power supply current;

[0048] S2, the sampling module obtains the current at the load end to complete the sampling current;

[0049] S3, the detection module amplifies the sampled current to obtain an amplified current;

[0050] S4, the main control module compares the amplified current with the power supply current to obtain a detection self-test result.

[0051] Among them, in step S4, if the ratio of the amplified current to the power supply current meets the set value, it is determined that the TLVR function is normal; if the ratio of the amplified current to the power supply current does not meet the set value, it is determined that the TLVR function is abnormal and an abnormal alarm prompt is issued.

[0052] The set value is greater than 1.5 times or less than 0.5 times.

[0053] Specifically, the main control module reads the output current I of the controller power conversion module out , the phase of TLVR is N; under normal circumstances, the current of Lc inductor L2 is I Lc ; where I Lc =I out / N. When the load end is working, the current output by the controller power conversion module must not be 0; if there is no soldering / false soldering, the main control module reads the current value output by the controller power conversion module (when working normally), and also reads the current detection I of the Lc inductor L2 at the same time. Lc The current is 0, and the TLVR function is judged to be abnormal. If the main control module reads I Lc The current is compared with the output current I of the controller power conversion module outWhen the difference between / N is relatively large (greater than 1.5 times or less than 0.5 times), the TLVR function is also judged to be abnormal; if the main control module reads I Lc The current is compared with the output current I of the controller power conversion module out When / N is very close, it is judged that the TLVR function is normal.

[0054] The present invention uses TLVR technology to supply power to the load end of the DCDC power supply, adds a precision resistor (current detection resistor R548) to the ground at the secondary side of the TLVR inductor for current sampling, and then uses a current / power consumption detection IC (such as INA219 / INA226) to perform current sampling and amplification. The BMC / MCU / FPGA (main control module) reads the current at the Lc inductor end through I2C, and also reads the current information of the output voltage of the controller power conversion module. The two are combined to analyze and determine whether the function of the TLVR is normal, and if abnormal, an alarm indication and other information are issued.

[0055] In this embodiment, the components and their models and connection relationships not shown are Figures 2 to 4 The specific circuit diagram has been marked and will not be repeated here.

[0056] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. The fault detection self-checking device of TLVR is characterized by: include: A load end, a sampling module, a detection module, a main control module and a controller power conversion module; the sampling module is connected to the load end, the detection module is connected to the sampling module, the main control module is connected to the detection module, and the controller power conversion module is connected to the main control module and the load end; the sampling module includes a TLVR inductor L1, an Lc inductor L2 and a current detection resistor R548; the TLVR inductor L1 is connected to the load end, the Lc inductor L2 is connected to the TLVR inductor L1, one end of the current detection resistor R548 is connected to the Lc inductor L2, and the other end is connected to the detection module; the detection module performs current sampling and amplification through a current / power consumption detection IC.

2. The TLVR fault detection self-checking device according to claim 1 is characterized in that: The model of the TLVR inductor L1 is SLA47436A-100L, and the model of the Lc inductor L2 is SLA2843B-120L.

3. The TLVR fault detection self-checking device according to claim 1 is characterized in that: The detection module includes a current detection IC chip U33, and the model of the current detection IC chip U33 is 1208-00855.

4. The TLVR fault detection self-checking device according to claim 1, characterized in that: The main control module includes a main control chip U1, and the model of the main control chip U1 is BMC AST2600.

5. The TLVR fault detection self-checking device according to claim 1, characterized in that: The controller power conversion module includes a controller chip U7, and the model of the controller chip U7 is 1220-80098.

6. The TLVR fault detection self-checking device according to claim 1, characterized in that: The load end includes a load chip U5, and the model of the load chip U5 is 1220-80038.

7. The fault detection self-checking method of TLVR is characterized by: The following steps are involved: The controller power conversion module supplies power to the load end to obtain a power supply current; The sampling module obtains the current at the load end to complete the sampling current; The detection module amplifies the sampled current to obtain an amplified current; The main control module compares the amplified current with the supply current to obtain a detection self-test result; The sampling module includes a TLVR inductor L1, an Lc inductor L2 and a current detection resistor R548; the TLVR inductor L1 is connected to the load end, the Lc inductor L2 is connected to the TLVR inductor L1, one end of the current detection resistor R548 is connected to the Lc inductor L2, and the other end is connected to the detection module.

8. The TLVR fault detection self-checking method according to claim 7, characterized in that: The main control module compares the amplified current with the power supply current to obtain the detection self-test result step. If the ratio of the amplified current to the power supply current meets the set value, it is determined that the TLVR function is normal; if the ratio of the amplified current to the power supply current does not meet the set value, it is determined that the TLVR function is abnormal and an abnormal alarm is issued.

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