A device, method and system for detecting short circuit of TLVR inductor

Abstract

The present invention provides a device, a method and a system for detecting short circuits of TLVR inductors, belonging to the technical field of TLVR fault detection. The device includes a TLVR inductor module to be tested, an ICT test module and a TLVR test tool board; the coupling side coils of TLVR inductors at all levels are connected in series in sequence according to the levels, the rear end of the last-stage TLVR inductor is grounded, and the front end of the first-stage TLVR inductor is grounded through a bypass inductor; the coupling side coils of TLVR inductors at all levels and the bypass inductor form a series circuit, and a test point is provided in the series circuit; the ICT test module inputs a test voltage to the voltage input end of the TLVR tool test board, then detects the voltage value at the test end, and judges whether there is a short circuit fault in the TLVR inductor according to the voltage value at the test end. The present invention realizes measuring the voltage of the TLVR inductor by using an ICT fixture through the TLVR test tool board, and thus realizes the determination of short circuit abnormalities of the TLVR inductor.

Description

Technical Field

[0001] The present invention belongs to the technical field of TLVR fault detection, and particularly relates to a device, method and system for detecting short circuits of TLVR inductors. Background Art

[0002] TLVR, short for Trans-Inductor Voltage Regulator, is a cross-inductor voltage regulator.

[0003] ICT, short for In-Circuit Test, is an in-line test. ICT testing uses an automatic in-line test instrument to test a PCBA. The automatic in-line test instrument uses test probes to contact the test points arranged on the PCB board to detect open circuits, short circuits and component soldering conditions of the PCBA, specifically including open circuit testing, short circuit testing, capacitor testing, diode testing, triode testing, field effect transistor testing, IC pin testing, as well as missing components, misaligned components, parameter value deviations, solder joint bridging, and PCB open / short circuit faults of general and special components, and accurately locates which component the fault is or where the open / short circuit is located.

[0004] Because TLVR inductors can save the number of output capacitors and improve the conversion efficiency during the power DC-DC conversion process, in order to save space and cost and improve power efficiency, more and more products use TLVR inductors in the design of Intel platform server motherboards. Since the impedance of this inductor is zero, the on-board ICT test cannot detect the abnormal body and soldering of the TLVR inductor.

[0005] This is the deficiency of the prior art. Therefore, in view of the above-mentioned defects in the prior art, it is very necessary to provide a device, method and system for detecting short circuits of TLVR inductors. Summary of the Invention

[0006] In view of the above-mentioned defect that the application of TLVR inductors in the prior art is becoming more and more extensive, but due to the zero impedance of this inductor, the on-board ICT test cannot detect the abnormal body and soldering of the TLVR inductor, the present invention provides a device, method and system for detecting short circuits of TLVR inductors to solve the above technical problems.

[0007] In a first aspect, the present invention provides a device for detecting short circuits of TLVR inductors, including a TLVR inductor module to be tested, an ICT test module, and a TLVR test tool board;

[0008] The TLVR inductor module to be tested includes a plurality of cascaded TLVR inductors, and the TLVR inductor includes a power output side coil and a coupling side coil;

[0009] The coupling side coils of each level of TLVR inductors are connected in series in sequence. The rear end of the last level TLVR inductor is grounded, and a bypass inductor is connected to the front end of the first level TLVR inductor, with the other end of the bypass inductor grounded;

[0010] The coupling side coils of each level of TLVR inductors and the bypass inductor form a series circuit, and a test point is provided in the series circuit;

[0011] The TLVR test tool board is provided with a voltage input terminal, a grounding terminal, a test terminal, and an inductance sampling module; one end of the inductance sampling module is connected to the voltage input terminal, the other end of the inductance sampling module is connected to the grounding terminal, and the test terminal is arranged in the inductance sampling module;

[0012] The voltage input terminal is connected to the front end of the first level TLVR inductor, the grounding terminal is grounded, and the test terminal is connected to the test point of the TLVR inductor;

[0013] The ICT test module is connected to the voltage input terminal, the grounding terminal, and the test terminal of the TLVR tool test board;

[0014] The ICT test module inputs a test voltage to the voltage input terminal of the TLVR tool test board, then detects the voltage value of the test terminal, and determines whether there is a short circuit fault in the TLVR inductor according to the voltage value of the test terminal.

[0015] Furthermore, the ICT test module includes an ICT tester and an ICT test fixture;

[0016] The ICT tester is provided with a transfer probe; the TLVR test tool board is arranged on the ICT test fixture, and the ICT test fixture is provided with a probe;

[0017] The ICT tester performs signal docking with the ICT test fixture through the transfer probe, and the probe on the ICT test fixture is connected to the voltage input terminal, the grounding terminal, and the test terminal of the TLVR test tool board. The ICT tester realizes plugging with the TLVR test tool board through the probe of the ICT test fixture.

[0018] Furthermore, the inductance sampling module includes a zener diode D1, a capacitor C1, and a resistor R1;

[0019] The positive electrode of the zener diode D1 is connected to the voltage input terminal, the negative electrode of the zener diode D1 is connected to the capacitor C1, the resistor R1, and the test terminal, and the other end of the capacitor C1 and the other end of the resistor R1 are connected to the grounding terminal. Through the inductance sampling module, the voltage of the TLVR inductor can be measured, and then the fault of the TLVR inductor can be judged.

[0020] Furthermore, the zener diode D1 uses a zener diode of the SS34A model;

[0021] The capacitor C1 uses a capacitor with a capacitance of 10 uF, a withstand voltage of 25 V, and an accuracy of 10%.

[0022] The resistor R1 uses a resistor with a resistance value of 10 K, a withstand power of 1 / 8 W, and an accuracy of 1%.

[0023] Furthermore, one end of the power output side coil of each stage of the TLVR inductor is connected to the input end of the corresponding stage power supply, and the other end of the power output side coil of each stage of the TLVR inductor is connected to the power output end.

[0024] In a second aspect, the present invention provides a method for detecting a short circuit of a TLVR inductor, including the following steps:

[0025] Design a TLVR test tool board for the TLVR inductor module;

[0026] Install the TLVR test tool board on the ICT test fixture;

[0027] Connect the TLVR test tool board to the TLVR inductor module to be tested and the ICT tester;

[0028] Use the ICT tester to input a set voltage to the TLVR inductor module to be tested through the TLVR test tool board, and detect whether the voltage at the set test point of the TLVR inductor module is within the threshold range, so as to judge whether there is a short circuit fault in the TLVR inductor.

[0029] Furthermore, the specific steps for designing a TLVR test tool board for the TLVR inductor module are as follows:

[0030] Select zener diodes, capacitors, and resistor components for the TLVR test tool board according to the TLVR inductor;

[0031] Design the capacitor and resistor in parallel and then in series with the zener diode, and connect the negative pole of the zener diode to the diode and resistor;

[0032] Set the positive pole of the zener diode as the voltage input end, the negative pole of the zener diode as the test end, and the end of the capacitor and resistor far from the zener diode as the ground end;

[0033] Select the parameters of the zener diode, capacitor, and resistor.

[0034] Furthermore, the specific steps for installing the TLVR test tool board on the ICT test fixture are as follows:

[0035] Determine the number of TLVR test tool boards required according to the number of TLVR inductors;

[0036] Reserve a position for the TLVR test tool board on the ICT test fixture;

[0037] Install the TLVR test tool board at the corresponding position of the ICT test fixture.

[0038] Further, the specific steps for connecting the TLVR test tool board to the TLVR inductor module under test and the ICT tester are as follows:

[0039] Connect the voltage input terminal of the TLVR test tool board to the front end of the first-stage TLVR inductor of the TLVR inductor module under test;

[0040] Connect the ground terminal of the TLVR test tool board to the digital ground;

[0041] Connect the test terminal of the TLVR test tool board to the end of the coupling-side coil of the first-stage TLVR inductor.

[0042] Further, use the ICT tester to input a set voltage to the TLVR inductor module under test through the TLVR test tool board, and detect whether the voltage at the set test point of the TLVR inductor module is within the threshold range, so as to judge whether there is a short circuit fault in the TLVR inductor. The specific steps are as follows:

[0043] The first-stage TLVR inductor of the TLVR inductor module under test is the current test TLVR inductor;

[0044] Use the ICT tester to input a preset voltage to the voltage input terminal of the TLVR test tool board, so as to realize inputting a preset voltage to the front end of the coupling-side coil of the first-stage TLVR inductor of the TLVR inductor module under test;

[0045] Use the ICT tester to measure the voltage value at the test terminal of the TLVR test tool board, so as to obtain the voltage value at the end of the coupling-side coil of the current test TLVR inductor of the TLVR inductor module under test;

[0046] The ICT tester judges whether the voltage value at the end of the coupling-side coil of the current test TLVR inductor is less than the preset voltage value;

[0047] If so, it is determined that there is a short circuit fault in the circuit section where the coupling-side coil of the TLVR inductor under test is located, and the corresponding fault is output to the user, and the process ends;

[0048] If not, it is determined that the circuit section where the coupling-side coil of the TLVR inductor under test is located is normal;

[0049] Judge whether all levels of TLVR inductors of the TLVR inductor module have been tested;

[0050] If so, the process ends;

[0051] If not, the ICT tester automatically connects the test terminal of the TLVR test tool board to the end of the coupling-side coil of the next-stage TLVR inductor;

[0052] Take the current TLVR inductor as the TLVR inductor to be measured, and return to the step of inputting the preset voltage.

[0053] In a third aspect, the present invention provides a system for detecting a short circuit of a TLVR inductor, including:

[0054] A test tool board design module for designing a TLVR test tool board for the TLVR inductor module;

[0055] A test tool board installation module for installing the TLVR test tool board on the ICT test fixture;

[0056] A test tool board connection module for connecting the TLVR test tool board to the TLVR inductor module to be measured and the ICT tester;

[0057] A TLVR inductor test module for using the ICT tester to input a set voltage to the TLVR inductor module to be measured through the TLVR test tool board, detecting whether the voltage at the set test point of the TLVR inductor module is within the threshold range, and further determining whether there is a short circuit fault in the TLVR inductor.

[0058] Further, the test tool board design module includes:

[0059] A component selection unit for selecting voltage stabilizing diodes, capacitors, and resistor components for the TLVR test tool board according to the TLVR inductor;

[0060] A component connection unit for designing the capacitor and resistor in parallel and then in series with the voltage stabilizing diode, and connecting the negative pole of the voltage stabilizing diode to the diode and resistor;

[0061] A test tool board interface connection unit for setting the positive pole of the voltage stabilizing diode as the voltage input end, the negative pole of the voltage stabilizing diode as the test end, and the ends of the capacitor and resistor far from the voltage stabilizing diode as the ground end;

[0062] A component parameter selection unit for selecting the parameters of the voltage stabilizing diode, capacitor, and resistor.

[0063] Further, the test tool board installation module includes:

[0064] A test tool board quantity determination unit for determining the number of TLVR test tool boards required according to the number of TLVR inductors;

[0065] A test tool board position reservation unit for reserving the position of the TLVR test tool board on the ICT test fixture;

[0066] A test tool board installation unit for installing the TLVR test tool board to the corresponding position on the ICT test fixture.

[0067] Further, the test tool board connection module includes:

[0068] A voltage input terminal connection unit for connecting the voltage input terminal of the TLVR test tool board to the front end of the first-stage TLVR inductor of the TLVR inductor module to be tested;

[0069] A ground terminal connection unit for connecting the ground terminal of the TLVR test tool board to the digital ground;

[0070] A test terminal connection unit for connecting the test terminal of the TLVR test tool board to the end of the coupling side coil of the first-stage TLVR inductor.

[0071] Further, the TLVR inductor test module includes:

[0072] A first-stage inductor positioning unit for taking the first-stage TLVR inductor of the TLVR inductor module to be tested as the current test TLVR inductor;

[0073] A voltage input unit for inputting a preset voltage to the voltage input terminal of the TLVR test tool board using an ICT tester, thereby realizing inputting the preset voltage to the front end of the coupling side coil of the first-stage TLVR inductor of the TLVR inductor module to be tested;

[0074] A voltage measurement unit for using an ICT tester to measure the voltage value at the test terminal of the TLVR test tool board, thereby obtaining the voltage value at the end of the coupling side coil of the current test TLVR inductor of the TLVR inductor module to be tested;

[0075] A voltage judgment unit for using an ICT tester to judge whether the voltage value at the end of the coupling side coil of the current test TLVR inductor is less than the preset voltage value;

[0076] An inductor short-circuit fault determination unit for determining that there is a short-circuit fault in the circuit segment where the coupling side coil of the TLVR inductor to be tested is located and outputting the corresponding fault to the user when the voltage value at the end of the coupling side coil of the current test TLVR inductor is less than the preset voltage value;

[0077] An inductor normal determination unit for determining that the circuit segment where the coupling side coil of the TLVR inductor to be tested is located is normal when the voltage value at the end of the coupling side coil of the current test TLVR inductor is greater than or equal to the preset voltage value;

[0078] A test completion judgment unit for judging whether all levels of TLVR inductors of the TLVR inductor module have been tested;

[0079] A next-stage inductor connection unit for automatically connecting the test terminal of the TLVR test tool board to the end of the coupling side coil of the next-stage TLVR inductor by the ICT tester when there is an untested TLVR inductor in the TLVR inductor module;

[0080] The inductor to be measured relocation unit is used to take the current TLVR inductor as the TLVR inductor to be measured.

[0081] The beneficial effects of the present invention are as follows.

[0082] The device, method and system for detecting the short circuit of the TLVR inductor provided by the present invention realize measuring the voltage of the TLVR inductor using the ICT fixture through the TLVR test tool board, and thus realize the determination of the short circuit abnormality of the TLVR inductor.

[0083] In addition, the design principle of the present invention is reliable, the structure is simple, and it has a very wide application prospect.

[0084] Therefore, compared with the prior art, the present invention has outstanding substantive features and remarkable progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0086] Figure 1 It is a circuit schematic diagram of the TLVR inductor module to be measured of the device for detecting the short circuit of the TLVR inductor of the present invention.

[0087] Figure 2 It is a circuit schematic diagram of the TLVR test tool board of the device for detecting the short circuit of the TLVR inductor of the present invention.

[0088] Figure 3 It is a schematic flowchart of Embodiment 4 of the method for detecting the short circuit of the TLVR inductor of the present invention.

[0089] Figure 4 It is a schematic flowchart of Embodiment 5 of the method for detecting the short circuit of the TLVR inductor of the present invention.

[0090] Figure 5 It is a schematic flowchart of Embodiment 5 of the method for detecting the short circuit of the TLVR inductor of the present invention.

[0091] Figure 6 It is a schematic diagram of the system for detecting the short circuit of the TLVR inductor of the present invention.

[0092] In the figure, VR-PHASE 1 is the input terminal of the first-phase power supply; VR-PHASE2 is the input terminal of the second-phase power supply; R 1 is a resistor; C 1 is a capacitor; D 1 is a zener diode; Lp is a bypass inductor; L 1 is the first TLVR inductor; L2 is the second TLVR inductor; DETECT IN is the voltage input terminal; DETECT VIN is the test terminal; DETECT GND is the ground terminal; Detailed implementation mode

[0093] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0094] Embodiment 1:

[0095] As Figure 1 and Figure 2 shown, the present invention provides a device for detecting a short circuit of a TLVR inductor, including a TLVR inductor module to be tested, an I CT test module, and a TLVR test tool board;

[0096] The TLVR inductor module to be tested includes a plurality of cascaded TLVR inductors, and the TLVR inductor includes a power output side coil and a coupling side coil;

[0097] The coupling side coils of each stage of the TLVR inductor are connected in series in sequence according to the level, the rear end of the last stage of the TLVR inductor is grounded, the front end of the first stage of the TLVR inductor is connected with a bypass inductor Lp, and the other end of the bypass inductor Lp is grounded;

[0098] The coupling side coils of each stage of the TLVR inductor and the bypass inductor Lp form a series circuit, and a test point is provided in the series circuit;

[0099] The TLVR test tool board is provided with a voltage input terminal DETECT IN, a ground terminal DETECT GND, a test terminal DETECT VIN, and an inductor sampling module; one end of the inductor sampling module is connected to the voltage input terminal DETECT IN, the other end of the inductor sampling module is connected to the ground terminal DETECT GND, and the test terminal DETECT VIN is arranged in the inductor sampling module;

[0100] The voltage input terminal DETECT IN is connected to the front end of the first stage of the TLVR inductor, the ground terminal DETECT GND is grounded, and the test terminal DETECT VIN is connected to the test point of the TLVR inductor;

[0101] The voltage input terminal DETECT IN, the ground terminal DETECT GND, and the test terminal DETECT VIN of the I CT test module are all connected to the TLVR tool test board;

[0102] The I CT test module inputs a test voltage to the voltage input terminal DETECT IN of the TLVR tool test board, then detects the voltage value of the test terminal DETECT VIN, and determines whether there is a short - circuit fault in the TLVR inductor according to the voltage value of the test terminal DETECT VIN.

[0103] Embodiment 2:

[0104] As Figure 1 and Figure 2 shown, the present invention provides a device for detecting short - circuit of TLVR inductors, including a TLVR inductor module to be tested, an I CT test module, and a TLVR test tool board;

[0105] The TLVR inductor module to be tested includes a plurality of cascaded TLVR inductors, and the TLVR inductor includes a power output - side coil and a coupling - side coil;

[0106] The coupling - side coils of each stage of TLVR inductors are connected in series in sequence according to the stage, the rear end of the last - stage TLVR inductor is grounded, the front end of the first - stage TLVR inductor is connected with a bypass inductor Lp, and the other end of the bypass inductor Lp is grounded;

[0107] The coupling - side coils of each stage of TLVR inductors and the bypass inductor Lp form a series circuit, and a test point is provided in the series circuit;

[0108] One end of the power output - side coil of each stage of TLVR inductor is connected to the input terminal of the corresponding - stage power supply, and the other end of the power output - side coil of each stage of TLVR inductor is connected to the power output terminal;

[0109] The TLVR test tool board is provided with a voltage input terminal DETECT IN, a ground terminal DETECT GND, a test terminal DETECT VIN, and an inductor sampling module; one end of the inductor sampling module is connected to the voltage input terminal DETECT IN, the other end of the inductor sampling module is connected to the ground terminal DETECT GND, and the test terminal DETECT VIN is arranged in the inductor sampling module;

[0110] The voltage input terminal DETECT IN is connected to the front end of the first - stage TLVR inductor, the ground terminal DETECT GND is grounded, and the test terminal DETECT VIN is connected to the test point of the TLVR inductor;

[0111] The voltage input terminal DETECT IN, the ground terminal DETECT GND, and the test terminal DETECT VIN of the I CT test module are all connected to the TLVR tool test board;

[0112] The I CT test module inputs a test voltage to the voltage input terminal DETECT IN of the TLVR tool test board, then detects the voltage value of the test terminal DETECT VIN, and determines whether there is a short - circuit fault in the TLVR inductor according to the voltage value of the test terminal DETECT VIN;

[0113] The I CT test module includes an ICT tester and an I CT test fixture;

[0114] The ICT tester is provided with transfer probes;

[0115] The TLVR test tool board is arranged on the I CT test fixture, and the I CT test fixture is provided with probes;

[0116] The ICT tester conducts signal docking with the ICT test fixture through the transfer probes, and the probes on the ICT test fixture are connected to the voltage input terminal DETECT IN, the ground terminal DETECT GND, and the test terminal DETECT VIN of the TLVR test tool board;

[0117] The inductor sampling module includes a zener diode D1, a capacitor C1, and a resistor R1; the zener diode D1 is a zener diode of the SS 34A model; the capacitor C1 is a capacitor with a capacitance of 10uF, a withstand voltage of 25V, and an accuracy of 10%; the resistor R1 is a resistor with a resistance value of 10K, a withstand power of 1 / 8W, and an accuracy of 1%;

[0118] The positive electrode of the zener diode D1 is connected to the voltage input terminal DETECT IN, the negative electrode of the zener diode D1 is connected to the capacitor C1, the resistor R1, and the test terminal DETECT VIN, the other end of the capacitor C1 and the other end of the resistor R1 are connected to the ground terminal DETECT GND.

[0119] Embodiment 3:

[0120] As Figure 1 and Figure 2 shown, the present invention provides a device for detecting the short - circuit of a TLVR inductor, including a to - be - tested TLVR inductor module, an I CT test module, and a TLVR test tool board;

[0121] The to - be - tested TLVR inductor module includes two cascaded TLVR inductors, a first TLVR inductor L1 and a second TLVR inductor TL2, and both TLVR inductors include a power output - side coil and a coupling - side coil;

[0122] The coupling side coils of the first TLVR inductor L1 and the coupling side coils of the second TLVR inductor L2 are connected in series in sequence by level. The rear end of the second TLVR inductor L2 is grounded. One end of the front end of the first TLVR inductor L1 is connected with a bypass inductor Lp, and the other end of the bypass inductor Lp is grounded;

[0123] The coupling side coil of the first TLVR inductor L1, the coupling side coil of the second TLVR inductor L2 and the bypass inductor Lp form a series circuit, and a test point is provided in the series circuit;

[0124] One end of the power output side coil of the first TLVR inductor L1 is connected with the input end VR-PHASE 1 of the first-phase power supply, and the other end of the power output side coil of the first TLVR inductor L1 is connected with the power output end VCC; One end of the power output side coil of the second TLVR inductor L2 is connected with the input end VR-PHASE2 of the second-phase power supply, and the other end of the power output side coil of the second TLVR inductor L1 is connected with the power output end VCC;

[0125] The TLVR test tool board is provided with a voltage input end DETECT IN, a grounding end DETECT GND, a test end DETECT VIN and an inductance sampling module; One end of the inductance sampling module is connected with the voltage input end DETECT IN, the other end of the inductance sampling module is connected with the grounding end DETECT GND, and the test end DETECT VIN is arranged in the inductance sampling module;

[0126] The voltage input end DETECT IN is connected with the front end of the first TLVR inductor L1, the grounding end DETECT GND is grounded, and the test end DETECT VIN is connected with the test point of the TLVR inductor;

[0127] The I CT test module is connected with the voltage input end DETECT IN, the grounding end DETECT GND and the test end DETECT VIN of the TLVR tool test board;

[0128] The I CT test module inputs a test voltage to the voltage input end DETECT IN of the TLVR tool test board, then detects the voltage value of the test end DETECT VIN, and judges whether there is a short circuit fault in the TLVR inductor according to the voltage value of the test end DETECT VIN;

[0129] The I CT test module includes an ICT tester and an I CT test fixture;

[0130] The ICT tester is provided with a transfer probe; The TLVR test tool board is arranged on the ICT test fixture, and the ICT test fixture is provided with a probe;

[0131] The I CT tester connects the signal with the ICT test fixture through the adapter probe. The probe on the ICT test fixture is connected to the voltage input terminal DETECT IN, the ground terminal DETECT GND and the test terminal DETECT VIN of the TLVR test tool board.

[0132] The inductance sampling module includes a voltage-stabilizing diode D1, a capacitor C1 and a resistor R1; the voltage-stabilizing diode D1 adopts a voltage-stabilizing diode of the SS 34A type; the capacitor C1 adopts a capacitor with a capacity of 10uF, a withstand voltage of 25V and an accuracy of 10%; the resistor R1 adopts a resistor with a resistance of 10K, a withstand power of 1 / 8W and an accuracy of 1%;

[0133] The anode of the Zener diode D1 is connected to the voltage input terminal DETECT IN, the cathode of the Zener diode D1 is connected to the capacitor C1, the resistor R1 and the test terminal DETECT VIN, and the other end of the capacitor C1 is connected to the other end of the resistor R1 and the ground terminal DETECT GND.

[0134] Embodiment 4:

[0135] like Figure 3 As shown, the present invention provides a method for detecting a TLVR inductor short circuit, comprising the following steps:

[0136] S 1. Design TLVR test tool board for TLVR inductor module;

[0137] S 2. Install the TLVR test tool board on the I CT test fixture;

[0138] S 3. Connect the TLVR test tool board to the TLVR inductor module to be tested and the I CT tester;

[0139] S4. Use the ICT tester to input a set voltage to the TLVR inductor module to be tested through the TLVR test tool board, detect whether the voltage at the set test point of the TLVR inductor module is within the threshold range, and then determine whether the TLVR inductor has a short circuit fault.

[0140] Embodiment 5:

[0141] like Figure 3 , Figure 4 and Figure 5 As shown, the present invention provides a method for detecting a TLVR inductor short circuit, comprising the following steps:

[0142] S 1. Design a TLVR test tool board for the TLVR inductor module; the specific steps of step S1 are as follows:

[0143] S 11. Select the Zener diode, capacitor and resistor components for the TLVR test tool board according to the TLVR inductor;

[0144] S12. Design a capacitor to be connected in parallel with a resistor and then in series with a zener diode, and connect the negative electrode of the zener diode to the diode and the resistor;

[0145] S13. Set the positive electrode of the zener diode as the voltage input terminal, the negative electrode of the zener diode as the test terminal, and the ends of the capacitor and the resistor far from the zener diode as the ground terminal;

[0146] S14. Select the parameters of the zener diode, capacitor, and resistor;

[0147] S2. Install the TLVR test tool board on the ICT test fixture; The specific steps of step S2 are as follows:

[0148] S21. Determine the number of TLVR test tool boards required according to the number of TLVR inductors;

[0149] S22. Reserve the position for the TLVR test tool board on the ICT test fixture;

[0150] S23. Install the TLVR test tool board at the corresponding position on the ICT test fixture;

[0151] S3. Connect the TLVR test tool board to the TLVR inductor module under test and the ICT tester; The specific steps of step S3 are as follows:

[0152] S31. Connect the voltage input terminal of the TLVR test tool board to the front end of the first-stage TLVR inductor of the TLVR inductor module under test;

[0153] S32. Connect the ground terminal of the TLVR test tool board to the digital ground;

[0154] S33. Connect the test terminal of the TLVR test tool board to the end of the coupled side coil of the first-stage TLVR inductor;

[0155] S4. Use the ICT tester to input a set voltage to the TLVR inductor module under test through the TLVR test tool board, and detect whether the voltage at the set test point of the TLVR inductor module is within the threshold range, so as to judge whether there is a short circuit fault in the TLVR inductor; The specific steps of step S4 are as follows:

[0156] S411. The first-stage TLVR inductor of the TLVR inductor module under test is the current test TLVR inductor;

[0157] S412. Use the ICT tester to input a preset voltage to the voltage input terminal of the TLVR test tool board, so as to realize inputting a preset voltage to the front end of the coupled side coil of the first-stage TLVR inductor of the TLVR inductor module under test;

[0158] S413. Use an ICT tester to measure the voltage value at the test terminal of the TLVR test tool board, and then obtain the terminal voltage value of the currently tested TLVR inductance coupling side coil of the TLVR inductance module to be tested;

[0159] S414. The ICT tester determines whether the terminal voltage value of the currently tested TLVR inductance coupling side coil is less than the preset voltage value;

[0160] If yes, go to step S415;

[0161] If not, go to step S416;

[0162] S415. Determine that there is a short - circuit fault in the circuit segment where the TLVR inductance coupling side coil to be tested is located, output the corresponding fault to the user, and end;

[0163] S416. Determine that the circuit segment where the TLVR inductance coupling side coil to be tested is located is normal;

[0164] S417. Determine whether all levels of TLVR inductors of the TLVR inductance module have been tested;

[0165] If not, go to step S418;

[0166] If yes, end;

[0167] S418. The ICT tester automatically connects the test terminal of the TLVR test tool board to the terminal of the next - level TLVR inductance coupling side coil;

[0168] S419. Take the current TLVR inductor as the TLVR inductor to be tested, and return to step S412.

[0169] Embodiment 6:

[0170] As Figure 6 shown, the present invention provides a system for detecting TLVR inductor short - circuit, including:

[0171] A test tool board design module for designing a TLVR test tool board for the TLVR inductance module;

[0172] A test tool board installation module for installing the TLVR test tool board on the ICT test fixture;

[0173] A test tool board connection module for connecting the TLVR test tool board to the TLVR inductance module to be tested and the ICT tester;

[0174] The TLVR inductor test module is used to input a set voltage to the TLVR inductor module to be tested through the TLVR test tool board using an ICT tester, detect whether the voltage at the set test point of the TLVR inductor module is within the threshold range, and then determine whether there is a short circuit fault in the TLVR inductor.

[0175] Embodiment 7:

[0176] As Figure 6 shown, the present invention provides a system for detecting a short circuit of a TLVR inductor, including:

[0177] A test tool board design module for designing a TLVR test tool board for the TLVR inductor module; the test tool board design module includes:

[0178] A component selection unit for selecting voltage stabilizing diodes, capacitors, and resistor components for the TLVR test tool board according to the TLVR inductor;

[0179] A component connection unit for designing the capacitor and resistor in parallel and then in series with the voltage stabilizing diode, and connecting the negative pole of the voltage stabilizing diode to the diode and resistor;

[0180] A test tool board interface connection unit for setting the positive pole of the voltage stabilizing diode as the voltage input terminal, the negative pole of the voltage stabilizing diode as the test terminal, and the ends of the capacitor and resistor away from the voltage stabilizing diode as the ground terminal;

[0181] A component parameter selection unit for selecting the parameters of the voltage stabilizing diode, capacitor, and resistor;

[0182] A test tool board installation module for installing the TLVR test tool board on the ICT test fixture; the test tool board installation module includes:

[0183] A test tool board quantity determination unit for determining the quantity of TLVR test tool boards required according to the quantity of TLVR inductors;

[0184] A test tool board position reservation unit for reserving the position of the TLVR test tool board on the ICT test fixture;

[0185] A test tool board installation unit for installing the TLVR test tool board at the corresponding position of the ICT test fixture;

[0186] A test tool board connection module for connecting the TLVR test tool board to the TLVR inductor module to be tested and the ICT tester; the test tool board connection module includes:

[0187] A voltage input terminal connection unit for connecting the voltage input terminal of the TLVR test tool board to the front end of the first-stage TLVR inductor of the TLVR inductor module to be tested;

[0188] A ground terminal connection unit for connecting the ground terminal of the TLVR test tool board to the digital ground;

[0189] A test terminal connection unit for connecting the test terminal of the TLVR test tool board to the end of the primary TLVR inductive coupling side coil;

[0190] A TLVR inductance test module for inputting a set voltage to a TLVR inductance module under test through the TLVR test tool board using an ICT tester, detecting whether the voltage at the set test point of the TLVR inductance module is within the threshold range, and then determining whether there is a short - circuit fault in the TLVR inductance; The TLVR inductance test module includes:

[0191] A primary inductance positioning unit for taking the primary TLVR inductance of the TLVR inductance module under test as the current test TLVR inductance;

[0192] A voltage input unit for inputting a preset voltage to the voltage input terminal of the TLVR test tool board using an ICT tester, thereby realizing inputting a preset voltage to the front end of the primary TLVR inductive coupling side coil of the TLVR inductance module under test;

[0193] A voltage measurement unit for measuring the voltage value at the test terminal of the TLVR test tool board using an ICT tester, thereby obtaining the voltage value at the end of the current test TLVR inductive coupling side coil of the TLVR inductance module under test;

[0194] A voltage judgment unit for judging whether the voltage value at the end of the current test TLVR inductive coupling side coil is less than the preset voltage value through an ICT tester;

[0195] An inductance short - circuit fault determination unit for determining that there is a short - circuit fault in the circuit segment where the current test TLVR inductive coupling side coil is located and outputting the corresponding fault to the user when the voltage value at the end of the current test TLVR inductive coupling side coil is less than the preset voltage value;

[0196] An inductance normal determination unit for determining that the circuit segment where the current test TLVR inductive coupling side coil is located is normal when the voltage value at the end of the current test TLVR inductive coupling side coil is greater than or equal to the preset voltage value;

[0197] A test completion judgment unit for judging whether all levels of TLVR inductances of the TLVR inductance module have been tested;

[0198] A lower - level inductance connection unit for automatically connecting the test terminal of the TLVR test tool board to the end of the next - level TLVR inductive coupling side coil by an ICT tester when there is an untested TLVR inductance in the TLVR inductance module;

[0199] The inductor to be measured repositioning unit is used to take the current TLVR inductor as the TLVR inductor to be measured.

[0200] Although the present invention has been described in detail by referring to the accompanying drawings and in conjunction with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope of the present invention. / Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A device for detecting the short circuit of a TLVR inductor, characterized in that, It includes a TLVR inductor module to be measured, an ICT test module, and a TLVR test tool board; The TLVR inductor module to be measured includes several cascaded TLVR inductors, and each TLVR inductor includes a power output side coil and a coupling side coil; The coupling side coils of each stage of TLVR inductors are connected in series in sequence according to the stage. The rear end of the last stage TLVR inductor is grounded, and a bypass inductor is connected to the front end of the first stage TLVR inductor, and the other end of the bypass inductor is grounded; The coupling side coils of each stage of TLVR inductors and the bypass inductor form a series loop, and a test point is provided in the series loop; The TLVR test tool board is provided with a voltage input terminal, a grounding terminal, a test terminal, and an inductor sampling module; one end of the inductor sampling module is connected to the voltage input terminal, the other end of the inductor sampling module is connected to the grounding terminal, and the test terminal is arranged in the inductor sampling module; The voltage input terminal is connected to the front end of the first stage TLVR inductor, the grounding terminal is grounded, and the test terminal is connected to the test point of the TLVR inductor; The ICT test module is connected to the voltage input terminal, the grounding terminal, and the test terminal of the TLVR tool test board; The ICT test module inputs a test voltage to the voltage input terminal of the TLVR tool test board, then detects the voltage value of the test terminal, and judges whether there is a short circuit fault in the TLVR inductor according to the voltage value of the test terminal.

2. The device for detecting short circuit of TLVR inductor according to claim 1, wherein, The ICT test module includes an ICT tester and an ICT test fixture; The ICT tester is provided with a transfer probe; The TLVR test tool board is arranged on the ICT test fixture, and the ICT test fixture is provided with a probe; The ICT tester performs signal docking with the ICT test fixture through the transfer probe, and the probe on the ICT test fixture is connected to the voltage input terminal, the grounding terminal, and the test terminal of the TLVR test tool board.

3. The device for detecting the short circuit of the TLVR inductor according to claim 1, characterized in that, The inductor sampling module includes a zener diode D1, a capacitor C1, and a resistor R1; The positive pole of the zener diode D1 is connected to the voltage input terminal, the negative pole of the zener diode D1 is connected to the capacitor C1, the resistor R1, and the test terminal, and the other end of the capacitor C1 and the other end of the resistor R1 are connected to the grounding terminal.

4. The device for detecting the short circuit of the TLVR inductor according to claim 1, wherein, One end of the power output side coil of each stage of TLVR inductor is connected to the input terminal of the corresponding stage power supply, and the other end of the power output side coil of each stage of TLVR inductor is connected to the power output terminal.

5. A method for detecting short circuit of TLVR inductor, characterized in that, It includes the following steps: Design a TLVR test tool board for the TLVR inductor module; the specific steps are as follows: Select zener diodes, capacitors, and resistor components for the TLVR test tool board according to the TLVR inductor; Design the capacitor and resistor in parallel and then in series with the zener diode, and the negative pole of the zener diode is connected to the diode and the resistor; Set the positive pole of the zener diode as the voltage input terminal, the negative pole of the zener diode as the test terminal, and the end of the capacitor and resistor far from the zener diode as the grounding terminal; Select the parameters of the zener diode, capacitor, and resistor; Install the TLVR test tool board on the ICT test fixture; Connect the TLVR test tool board to the TLVR inductor module to be measured and the ICT tester; the specific steps are as follows: Connect the voltage input terminal of the TLVR test tool board to the front end of the first stage TLVR inductor of the TLVR inductor module to be measured; Connect the ground terminal of the TLVR test tool board to the digital ground; Connect the test terminal of the TLVR test tool board to the end of the first-stage TLVR inductive coupling side coil; Use the ICT tester to input a set voltage to the TLVR inductance module to be tested through the TLVR test tool board, and detect whether the voltage at the set test point of the TLVR inductance module is within the threshold range, so as to judge whether there is a short circuit fault in the TLVR inductance.

6. The method for detecting the short circuit of the TLVR inductor according to claim 5, characterized in that, The specific steps for installing the TLVR test tool board on the ICT test fixture are as follows: Determine the number of TLVR test tool boards required according to the number of TLVR inductances; Reserve a position for the TLVR test tool board on the ICT test fixture; Install the TLVR test tool board at the corresponding position on the ICT test fixture.

7. The method for detecting the short circuit of the TLVR inductor according to claim 6, characterized in that, The specific steps for using the ICT tester to input a set voltage to the TLVR inductance module to be tested through the TLVR test tool board, and detecting whether the voltage at the set test point of the TLVR inductance module is within the threshold range, so as to judge whether there is a short circuit fault in the TLVR inductance are as follows: The first-stage TLVR inductance of the TLVR inductance module to be tested is the current tested TLVR inductance; Use the ICT tester to input a preset voltage to the voltage input terminal of the TLVR test tool board, so as to realize inputting a preset voltage to the front end of the inductive coupling side coil of the first-stage TLVR inductance of the TLVR inductance module to be tested; Use the ICT tester to test the voltage value at the test terminal of the TLVR test tool board, so as to obtain the voltage value at the end of the current tested TLVR inductive coupling side coil of the TLVR inductance module to be tested; The ICT tester judges whether the voltage value at the end of the current tested TLVR inductive coupling side coil is less than the preset voltage value; If so, it is determined that there is a short circuit fault in the circuit section where the TLVR inductive coupling side coil to be tested is located, and the corresponding fault is output to the user, and the process ends; If not, it is determined that the circuit section where the TLVR inductive coupling side coil to be tested is located is normal; Judge whether all levels of TLVR inductances of the TLVR inductance module have been tested; If so, the process ends; If not, the ICT tester automatically connects the test terminal of the TLVR test tool board to the end of the next-stage TLVR inductive coupling side coil; Take the current TLVR inductance as the TLVR inductance to be tested, and return to the step of inputting the preset voltage.

8. A system for detecting short circuit of TLVR inductor, characterized in that, Including: A test tool board design module for designing a TLVR test tool board for the TLVR inductance module; the specific process is as follows: Select zener diodes, capacitors and resistors for the TLVR test tool board according to the TLVR inductance; Design the capacitor and resistor in parallel and then in series with the zener diode, and connect the negative pole of the zener diode to the diode and resistor; Set the positive pole of the zener diode as the voltage input terminal, the negative pole of the zener diode as the test terminal, and the end of the capacitor and resistor far from the zener diode as the ground terminal; Select the parameters of the zener diode, capacitor and resistor; A test tool board installation module for installing the TLVR test tool board on the ICT test fixture; A test tool board connection module for connecting the TLVR test tool board to the TLVR inductance module to be tested and the ICT tester; the specific process is as follows: Connect the voltage input terminal of the TLVR test tool board to the front end of the first-stage TLVR inductor of the TLVR inductor module to be tested; Connect the ground terminal of the TLVR test tool board to the digital ground; Connect the test terminal of the TLVR test tool board to the end of the coupling-side coil of the first-stage TLVR inductor; The TLVR inductor test module is used to input a set voltage to the TLVR inductor module to be tested through the TLVR test tool board using an ICT tester, and detect whether the voltage at the set test point of the TLVR inductor module is within the threshold range, so as to judge whether there is a short-circuit fault in the TLVR inductor.

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