CN108196184B - XL series boost chip detection device and method - Google Patents
XL series boost chip detection device and method Download PDFInfo
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- CN108196184B CN108196184B CN201810070928.5A CN201810070928A CN108196184B CN 108196184 B CN108196184 B CN 108196184B CN 201810070928 A CN201810070928 A CN 201810070928A CN 108196184 B CN108196184 B CN 108196184B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
Abstract
The invention relates to an XL series boosting chip detection device and method, and belongs to the technical field of chip detection. The invention comprises a boost type LED constant current driving circuit, a boost type constant voltage circuit, a double-limit comparison circuit, a square wave generator and a fault prompting circuit; the boost type LED driving circuit and the boost type constant voltage circuit respectively output voltage signals to the double-limit comparison circuit, and the double-limit comparison circuit and the square wave generator are connected with the fault prompting circuit. The invention judges the fault of the chip by monitoring the pin voltage of the XL series boosting chip in real time, and can rapidly detect the fault of the XL series boosting chip. Meanwhile, the structure is simple, the operation is easy, and the use is convenient.
Description
Technical Field
The invention relates to an XL series boosting chip detection device and method, and belongs to the technical field of chip detection.
Background
At present, most XL series boosting chips are divided into constant voltage type and constant current type, and each type of XL series boosting chip is provided with 8 pins and 5 pins, when the XL series boosting chip is used for faults, a voltage level of a universal meter is generally used for measuring the voltage of each pin of the chip one by one to judge whether the chip is good or not, the detection method is time-consuming and labor-consuming, and accidents of chip damage caused by the fact that a voltmeter is connected with a mistake in the detection process of people often occur.
Disclosure of Invention
The invention aims to solve the technical problems that: the invention provides an XL series boosting chip detection device and method, which are used for solving the problems that when an XL series boosting chip encounters a fault, a universal meter is used for detecting the chip, the time and the labor are consumed, the detection speed is low, and the chip is easy to damage; according to the invention, the constant current type and constant voltage chip are respectively detected by the boost type LED constant current driving circuit and the boost type constant voltage circuit, and the faults of the chips are judged by monitoring the pin voltage of the XL series boost chips in real time, so that the faults of the XL series boost chips can be detected rapidly.
The technical scheme of the invention is as follows: an XL series boost chip detection device comprises a boost LED constant current drive circuit 1, a boost constant voltage circuit 2, a double-limit comparison circuit 3, a square wave generator 4 and a fault prompting circuit 5; the boost type LED driving circuit 1 and the boost type constant voltage circuit 2 respectively output voltage signals to the double-limit comparison circuit 3, and the double-limit comparison circuit 3 and the square wave generator 4 are connected with the fault prompting circuit 5;
the double-limit comparison circuit 3 comprises integrated operational amplifiers A1 and A2, resistors R5, R6, R7 and R8 and diodes D1 and D2; the +5V power supply is connected with the inverting terminal of the integrated operational amplifier A1 through a resistor R5, the inverting terminal of the integrated operational amplifier A1 is connected with the non-inverting terminal of the integrated operational amplifier A2 through a resistor R6, the non-inverting terminal of the integrated operational amplifier A2 is grounded through a resistor R7, and the inverting terminal of the integrated operational amplifier A2 is connected with the non-inverting terminal of the integrated operational amplifier A1 and then connected with the 8-pin IC seat 9; the output ends of the integrated operational amplifiers A1 and A2 are respectively connected with anodes of the diodes D1 and D2, and the cathodes of the diodes D1 and D2 are connected with one end of an AND gate M of the fault prompting circuit 5 through a resistor R8;
the square wave generator 4 comprises integrated operational amplifiers A3 and A4, resistors R11, R12, R13, R14, R15, R16 and R17, capacitors C6 and C7 and diodes D3 and D4; the inverting terminal and the non-inverting terminal of the integrated operational amplifier A3 are respectively grounded through resistors R14 and R15, the two ends of the resistor R15 are connected with a capacitor C6 in parallel, the non-inverting terminal of the integrated operational amplifier A3 is connected with the output terminal of the integrated operational amplifier A3 through a resistor R16 and a capacitor C7 in sequence, the inverting terminal of the integrated operational amplifier A3 is connected with the output terminal of the integrated operational amplifier A3 through resistors R11, R12 and R13 in series in sequence, and the diodes D3 and D4 are connected with the resistor R13 in parallel after being connected in reverse parallel; the output end of the integrated operational amplifier A3 is connected with the inverting end of the integrated operational amplifier A4 through a resistor R17, the non-inverting end of the integrated operational amplifier A4 is grounded through a resistor R18, and the output end of the integrated operational amplifier A4 is connected with one end of an AND gate M of the fault prompting circuit 5;
the fault prompting circuit 5 comprises a buzzer, an AND gate M, resistors R9 and R10 and a triode T; the output end of the AND gate M is connected with the base electrode of the triode T through a resistor R9, the emitter electrode of the triode T is grounded, the collector electrode of the triode T is connected with one end of the buzzer through a resistor R10, and the other end of the buzzer is connected with the +5V power supply end.
The boost type LED constant current driving circuit 1 comprises a 5-pin IC seat 6, an 8-pin IC seat 7, a resistor R1, capacitors C1, C2 and C3, an inductor L1, a Schottky diode V1 and an LED1 indicator lamp; the +5V power supply and the ground are respectively connected with the 4 pin and the 1 pin of the 5-pin IC seat 6 after being filtered by the parallel capacitors C1 and C2; the 1 pin of the 5-pin IC seat 6 is connected with the 5 pin thereof through a resistor R1; the 1 foot, 2 foot, 3 foot, 4 foot, 5 foot of the 6 foot IC seat of the 8 foot IC seat, 7 foot and 8 foot, 1 foot, 5 foot and 6 foot, 2 foot, 3 foot of the 7 foot IC seat, after connecting, connect positive pole and one end of inductance L1 of the schottky diode V1 at the same time, the other end of inductance L1 is connected with 2 foot of the 7 foot IC seat of the 8 foot IC seat, the positive pole of the capacitor C3 and positive pole of LED1 pilot lamp of the cathode of the schottky diode V1 at the same time, the negative pole of the capacitor C3 is grounded, the negative pole of the LED1 pilot lamp is connected with 3 foot of the 7 foot IC seat of 8;
the step-up constant voltage circuit 2 comprises a 5-pin IC seat 8, an 8-pin IC seat 9, resistors R2 and R3, capacitors C4 and C5, an inductor L2 and a Schottky diode V2; the pin 4 of the pin 5 IC seat 8 is connected with the pin 4 of the pin 5 IC seat 6, and the pin 1 of the pin 5 IC seat 8 is connected with the pin 5 through a resistor R2; the 1 foot, 2 foot, 3 foot, 4 foot, 5 foot of the 8 foot IC seat 8 are connected with 7 foot, 8 foot, 1 foot, 5 foot, 6 foot, 2 foot, 3 foot of the 8 foot IC seat 9 respectively, the 7 foot and 8 foot of the 8 foot IC seat 9 are grounded after being connected, the 5 foot and 6 foot of the 8 foot IC seat 9 are connected with one end of the anode of the Schottky diode V2 and one end of the inductance L2 at the same time, the other end of the inductance L2 is connected with the 2 foot of the 8 foot IC seat 9, the cathode of the Schottky diode V2 is connected with the 3 foot of the 8 foot IC seat 9 through the resistor R3, and the capacitors C4 and C5 are sequentially connected in parallel between the cathode of the Schottky diode V2 and the ground for filtering;
and the pins 1 of the pin 8 IC seat 7 and the pin 1 of the pin 8 IC seat 9 are connected with the anode of the LED2 indicator lamp through a resistor R4, and the cathode of the LED2 indicator lamp is grounded.
The method for detecting the XL series boost chip by using the device comprises the following specific steps:
A. firstly judging whether the detected XL series boosting chip belongs to a constant voltage type boosting chip or a constant current type boosting chip;
B. if the detected XL series boosting chip belongs to a constant current type 5-pin boosting chip, the chip is inserted into a 5-pin IC seat 6 in the boosting type LED constant current driving circuit 1 according to the correct pin sequence, and if the detected XL series boosting chip belongs to a constant current type 8-pin boosting chip, the chip is inserted into an 8-pin IC seat 7 in the boosting type LED constant current driving circuit 1 according to the correct pin sequence; if the detected XL series boosting chip belongs to a constant voltage type 5-pin boosting chip, the chip is inserted into a 5-pin IC seat 8 in the boosting type constant voltage circuit 2 according to the correct pin sequence, and if the detected XL series boosting chip belongs to a constant voltage type 8-pin boosting chip, the chip is inserted into an 8-pin IC seat 9 in the boosting type constant voltage circuit 2 according to the correct pin sequence;
C. starting a power supply and starting the XL series boosting chip device to work;
D. if the 5-pin IC seat 6 or the 8-pin IC seat 7 in the boost type LED constant current driving circuit 1 is connected with a fault-free boost type constant current chip, the LED1 indicator lamp in the boost type LED constant current driving circuit 1 emits light, and the 2-pin IC seat 6 or the 1-pin IC seat 7 outputs a high-level signal to control the LED2 indicator lamp to emit light;
if the 5-pin IC seat 8 or the 8-pin IC seat 9 in the boost type constant voltage circuit 2 is connected with a fault-free boost type constant voltage chip, the 2-pin IC seat 8 or the 1-pin IC seat 9 in the boost type constant voltage circuit 2 outputs a high-level signal to control the LED2 indicator lamp to emit light;
E. a 5-pin IC seat 6 or an 8-pin IC seat 7 in the boost type LED constant current driving circuit 1 is connected to a boost type constant current chip;
if the LED1 indicator lamp in the boost type LED constant current driving circuit 1 does not emit light, the detected boost type constant current chip has a fault; if the LED2 indicator light does not emit light and the buzzer emits a prompt tone, the fault of the switch pin of the chip is indicated;
if the LED2 indicator lights, the buzzer sends out a prompt tone to indicate that the feedback pin of the detected chip fails;
a 5-pin IC seat 8 or an 8-pin IC seat 9 in the boost type constant voltage circuit 2 is connected to a boost type constant voltage chip, the LED2 indicator light does not emit light, and the buzzer emits a prompt tone to indicate that the switch pin of the chip fails;
if the LED2 indicator lights, the buzzer sends out a prompt tone to indicate that the feedback pin of the detected chip fails;
F. and after the detection is finished, the power supply is turned off, and the detected chip is taken out.
The beneficial effects of the invention are as follows: the invention provides an XL series boosting chip detection device and method, which can judge the faults of chips by monitoring the pin voltage of an XL series boosting chip in real time, and can rapidly detect the faults of the XL series boosting chip. Meanwhile, the structure is simple, the operation is easy, and the use is convenient.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
The reference numerals in fig. 1: 1-boosting type LED constant current driving circuit, 2-boosting type constant voltage circuit, 3-double limit comparison circuit, 4-square wave generator, 5-fault prompting circuit, 6-5 pin IC seat, 7-8 pin IC seat, 8-5 pin IC seat, 9-8 pin IC seat, 10-buzzer, V1-V2-Schottky diode, R1-R18-resistor, D1-D4-diode, M-AND gate, T-triode, LED 1-LED 2-indicator lamp, A1-A4-integrated operational amplifier and C1-C7-capacitor.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Example 1: as shown in fig. 1, an XL series boost chip detection device comprises a boost type LED constant current driving circuit 1, a boost type constant voltage circuit 2, a double-limit comparison circuit 3, a square wave generator 4 and a fault prompting circuit 5; the boost type LED driving circuit 1 and the boost type constant voltage circuit 2 respectively output voltage signals to the double-limit comparison circuit 3, and the double-limit comparison circuit 3 and the square wave generator 4 are connected with the fault prompting circuit 5;
the double-limit comparison circuit 3 comprises integrated operational amplifiers A1 and A2, resistors R5, R6, R7 and R8 and diodes D1 and D2; the +5V power supply is connected with the inverting terminal of the integrated operational amplifier A1 through a resistor R5, the inverting terminal of the integrated operational amplifier A1 is connected with the non-inverting terminal of the integrated operational amplifier A2 through a resistor R6, the non-inverting terminal of the integrated operational amplifier A2 is grounded through a resistor R7, and the inverting terminal of the integrated operational amplifier A2 is connected with the non-inverting terminal of the integrated operational amplifier A1 and then connected with the 8-pin IC seat 9; the output ends of the integrated operational amplifiers A1 and A2 are respectively connected with anodes of the diodes D1 and D2, and the cathodes of the diodes D1 and D2 are connected with one end of an AND gate M of the fault prompting circuit 5 through a resistor R8;
the square wave generator 4 comprises integrated operational amplifiers A3 and A4, resistors R11, R12, R13, R14, R15, R16 and R17, capacitors C6 and C7 and diodes D3 and D4; the inverting terminal and the non-inverting terminal of the integrated operational amplifier A3 are respectively grounded through resistors R14 and R15, the two ends of the resistor R15 are connected with a capacitor C6 in parallel, the non-inverting terminal of the integrated operational amplifier A3 is connected with the output terminal of the integrated operational amplifier A3 through a resistor R16 and a capacitor C7 in sequence, the inverting terminal of the integrated operational amplifier A3 is connected with the output terminal of the integrated operational amplifier A3 through resistors R11, R12 and R13 in series in sequence, and the diodes D3 and D4 are connected with the resistor R13 in parallel after being connected in reverse parallel; the output end of the integrated operational amplifier A3 is connected with the inverting end of the integrated operational amplifier A4 through a resistor R17, the non-inverting end of the integrated operational amplifier A4 is grounded through a resistor R18, and the output end of the integrated operational amplifier A4 is connected with one end of an AND gate M of the fault prompting circuit 5;
the fault prompting circuit 5 comprises a buzzer, an AND gate M, resistors R9 and R10 and a triode T; the output end of the AND gate M is connected with the base electrode of the triode T through a resistor R9, the emitter electrode of the triode T is grounded, the collector electrode of the triode T is connected with one end of the buzzer through a resistor R10, and the other end of the buzzer is connected with the +5V power supply end.
Further, the boost type LED constant current driving circuit 1 includes a 5-pin IC socket 6, an 8-pin IC socket 7, a resistor R1, capacitors C1, C2, C3, an inductor L1, a schottky diode V1, and an LED1 indicator lamp; the +5V power supply and the ground are respectively connected with the 4 pin and the 1 pin of the 5-pin IC seat 6 after being filtered by the parallel capacitors C1 and C2; the 1 pin of the 5-pin IC seat 6 is connected with the 5 pin thereof through a resistor R1; the 1 foot, 2 foot, 3 foot, 4 foot, 5 foot of the 6 foot IC seat of the 8 foot IC seat, 7 foot and 8 foot, 1 foot, 5 foot and 6 foot, 2 foot, 3 foot of the 7 foot IC seat, after connecting, connect positive pole and one end of inductance L1 of the schottky diode V1 at the same time, the other end of inductance L1 is connected with 2 foot of the 7 foot IC seat of the 8 foot IC seat, the positive pole of the capacitor C3 and positive pole of LED1 pilot lamp of the cathode of the schottky diode V1 at the same time, the negative pole of the capacitor C3 is grounded, the negative pole of the LED1 pilot lamp is connected with 3 foot of the 7 foot IC seat of 8;
the step-up constant voltage circuit 2 comprises a 5-pin IC seat 8, an 8-pin IC seat 9, resistors R2 and R3, capacitors C4 and C5, an inductor L2 and a Schottky diode V2; the pin 4 of the pin 5 IC seat 8 is connected with the pin 4 of the pin 5 IC seat 6, and the pin 1 of the pin 5 IC seat 8 is connected with the pin 5 through a resistor R2; the 1 foot, 2 foot, 3 foot, 4 foot, 5 foot of the 8 foot IC seat 8 are connected with 7 foot, 8 foot, 1 foot, 5 foot, 6 foot, 2 foot, 3 foot of the 8 foot IC seat 9 respectively, the 7 foot and 8 foot of the 8 foot IC seat 9 are grounded after being connected, the 5 foot and 6 foot of the 8 foot IC seat 9 are connected with one end of the anode of the Schottky diode V2 and one end of the inductance L2 at the same time, the other end of the inductance L2 is connected with the 2 foot of the 8 foot IC seat 9, the cathode of the Schottky diode V2 is connected with the 3 foot of the 8 foot IC seat 9 through the resistor R3, and the capacitors C4 and C5 are sequentially connected in parallel between the cathode of the Schottky diode V2 and the ground for filtering;
and the pins 1 of the pin 8 IC seat 7 and the pin 1 of the pin 8 IC seat 9 are connected with the anode of the LED2 indicator lamp through a resistor R4, and the cathode of the LED2 indicator lamp is grounded.
The method for detecting the XL series boost chip by using the device comprises the following specific steps:
A. judging whether the detected XL series boosting chip belongs to a constant voltage type boosting chip or a constant current type boosting chip;
B. if the detected XL series boosting chip belongs to a constant current type 5-pin boosting chip, the chip is inserted into a 5-pin IC seat 6 in the boosting type LED constant current driving circuit 1 according to the correct pin sequence, and if the detected XL series boosting chip belongs to a constant current type 8-pin boosting chip, the chip is inserted into an 8-pin IC seat 7 in the boosting type LED constant current driving circuit 1 according to the correct pin sequence; if the detected XL series boosting chip belongs to a constant voltage type 5-pin boosting chip, the chip is inserted into a 5-pin IC seat 8 in the boosting type constant voltage circuit 2 according to the correct pin sequence, and if the detected XL series boosting chip belongs to a constant voltage type 8-pin boosting chip, the chip is inserted into an 8-pin IC seat 9 in the boosting type constant voltage circuit 2 according to the correct pin sequence;
C. starting a power supply and starting the XL series boosting chip device to work;
D. if the 5-pin IC seat 6 or the 8-pin IC seat 7 in the boost type LED constant current driving circuit 1 is connected with a fault-free boost type constant current chip, the LED1 indicator lamp in the boost type LED constant current driving circuit 1 emits light, and the 2-pin IC seat 6 or the 1-pin IC seat 7 outputs a high-level signal to control the LED2 indicator lamp to emit light; the voltage of 1.25V is output to the double-limit comparison circuit 3 by the 5-pin IC seat 6 or the 3-pin IC seat 7, the double-limit comparison circuit 3 outputs a low-level signal to the AND gate M in the fault prompting circuit 5, meanwhile, the square wave generator 4 outputs a square wave signal to the AND gate M, the AND gate M outputs a low-level signal to the triode T after operation, the triode T is cut off, and the buzzer does not sound;
if the 5-pin IC seat 8 or the 8-pin IC seat 9 in the boost type constant voltage circuit 2 is connected with a fault-free boost type constant voltage chip, the 2-pin IC seat 8 or the 1-pin IC seat 9 in the boost type constant voltage circuit 2 outputs a high-level signal to control the LED2 indicator lamp to emit light; the voltage of 1.25V is output to the double-limit comparison circuit 3 by the 5-pin IC seat 8 or the 3-pin IC seat 9, the double-limit comparison circuit 3 outputs a low-level signal to the AND gate M in the fault prompting circuit 5, meanwhile, the square wave generator 4 outputs a square wave signal to the AND gate M, the AND gate M outputs a low-level signal to the triode T after operation, the triode T is cut off, and the buzzer does not sound;
E. a 5-pin IC seat 6 or an 8-pin IC seat 7 in the boost type LED constant current driving circuit 1 is connected with a boost type constant current chip, and if an LED1 indicator lamp in the boost type LED constant current driving circuit 1 does not emit light, the detected boost type constant current chip has a fault; if the LED2 indicator light does not emit light and the buzzer emits a prompt tone, the fault of the switch pin of the chip is indicated; at this time, the 2-pin of the 5-pin IC socket 6 or the 1-pin of the 8-pin IC socket 7 outputs a low-level signal, the boosting function of the chip is turned off, the 5-pin of the 5-pin IC socket 6 or the 3-pin of the 8-pin IC socket 7 outputs a voltage of 0V to the double-limit comparison circuit 3, the double-limit comparison circuit 3 outputs a high-level signal to the and gate M in the fault prompting circuit 5, meanwhile, the square wave generator 4 outputs a square wave signal to the and gate M, the and gate M outputs a square wave pulse signal to the triode T after operation, the triode T is turned on, and the buzzer sends a prompting sound; if the LED2 indicator lights, the buzzer sends out a prompt tone to indicate that the feedback pin of the detected chip fails; at this time, the 2-pin of the 5-pin IC seat 6 or the 1-pin of the 8-pin IC seat 7 outputs a high-level signal, the switch pin of the chip works normally, the 5-pin of the 5-pin IC seat 6 or the 3-pin of the 8-pin IC seat 7 outputs a feedback voltage which is not in the normal working range of the chip to the double-limit comparison circuit 3, the double-limit comparison circuit 3 outputs a high-level signal to the and gate M in the fault prompting circuit 5, meanwhile, the square wave generator 4 outputs a square wave signal to the and gate M, the and gate M outputs a square wave pulse signal to the triode T after operation, the triode T is conducted, and the buzzer sends a prompting sound;
a 5-pin IC seat 8 or an 8-pin IC seat 9 in the boost type constant voltage circuit 2 is connected to a boost type constant voltage chip, the LED2 indicator light does not emit light, and the buzzer emits a prompt tone to indicate that the switch pin of the chip fails; at this time, the 2-pin of the 5-pin IC socket 8 or the 1-pin of the 8-pin IC socket 9 outputs a low-level signal, the boosting function of the chip is turned off, the 5-pin of the 5-pin IC socket 8 or the 3-pin of the 8-pin IC socket 9 outputs a voltage of 0V to the double-limit comparison circuit 3, the double-limit comparison circuit 3 outputs a high-level signal to the and gate M in the fault prompting circuit 5, meanwhile, the square wave generator 4 outputs a square wave signal to the and gate M, the and gate M outputs a square wave pulse signal to the triode T after operation, the triode T is turned on, and the buzzer sends a prompting sound; if the LED2 indicator lights, the buzzer sends out a prompt tone to indicate that the feedback pin of the detected chip fails; at this time, the 2-pin of the 5-pin IC seat 8 or the 1-pin of the 8-pin IC seat 9 outputs a high-level signal, the switch pin of the chip works normally, the 5-pin of the 5-pin IC seat 8 or the 3-pin of the 8-pin IC seat 9 outputs a feedback voltage which is not in the normal working range of the chip to the double-limit comparison circuit 3, the double-limit comparison circuit 3 outputs a high-level signal to the and gate M in the fault prompting circuit 5, meanwhile, the square wave generator 4 outputs a square wave signal to the and gate M, the and gate M outputs a square wave pulse signal to the triode T after operation, the triode T is conducted, and the buzzer sends a prompting sound;
F. and after the detection is finished, the power supply is turned off, and the detected chip is taken out.
Among the electronic chips, each chip has a pin number specification for the IC socket, and the package modes of the 5-pin and 8-pin chips are unified nationally only by mounting the chips according to the IC socket number.
The specific embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (3)
1. A method for detecting XL series boosting chips is characterized by comprising the following steps: the method comprises the following specific steps:
A. firstly judging whether the detected XL series boosting chip belongs to a constant voltage type boosting chip or a constant current type boosting chip;
B. if the detected XL series boosting chip belongs to a constant current type 5-pin boosting chip, the chip is inserted into a 5-pin IC seat (6) in the boosting type LED constant current driving circuit (1) according to the correct pin sequence, and if the detected XL series boosting chip belongs to a constant current type 8-pin boosting chip, the chip is inserted into an 8-pin IC seat (7) in the boosting type LED constant current driving circuit (1) according to the correct pin sequence; if the detected XL series boosting chip belongs to a constant voltage type 5-pin boosting chip, the chip is inserted into a 5-pin IC seat (8) in the constant voltage type constant voltage circuit (2) according to the correct pin sequence, and if the detected XL series boosting chip belongs to a constant voltage type 8-pin boosting chip, the chip is inserted into an 8-pin IC seat (9) in the constant voltage type constant voltage circuit (2) according to the correct pin sequence;
C. starting a power supply and starting the XL series boosting chip device to work;
D. if a 5-pin IC seat (6) or an 8-pin IC seat (7) in the boost type LED constant current driving circuit (1) is connected to a fault-free boost type constant current chip, an LED1 indicator lamp in the boost type LED constant current driving circuit (1) emits light, and a 2-pin or 1-pin of the 5-pin IC seat (6) or the 8-pin IC seat (7) outputs a high-level signal to control the LED2 indicator lamp to emit light;
if the 5-pin IC seat (8) or the 8-pin IC seat (9) in the boost constant voltage circuit (2) is connected to a fault-free boost constant voltage chip, the 2-pin IC seat (8) or the 1-pin IC seat (9) in the boost constant voltage circuit (2) outputs a high-level signal to control the LED2 indicator lamp to emit light;
E. a 5-pin IC seat (6) or an 8-pin IC seat (7) in the boost type LED constant current driving circuit (1) is connected to a boost type constant current chip;
if the LED1 indicator light in the boost type LED constant current driving circuit (1) does not emit light, the detected boost type constant current chip has a fault; if the LED2 indicator light does not emit light and the buzzer emits a prompt tone, the fault of the switch pin of the chip is indicated;
if the LED2 indicator lights, the buzzer sends out a prompt tone to indicate that the feedback pin of the detected chip fails;
a 5-pin IC seat (8) or an 8-pin IC seat (9) in the boost type constant voltage circuit (2) is connected to the boost type constant voltage chip, the LED2 indicator light does not emit light, and the buzzer emits a prompt tone to indicate that the switch pin of the chip fails;
if the LED2 indicator lights, the buzzer sends out a prompt tone to indicate that the feedback pin of the detected chip fails;
F. and after the detection is finished, the power supply is turned off, and the detected chip is taken out.
2. An XL series boost chip detection apparatus for implementing the method of claim 1, wherein: the LED constant current drive circuit comprises a boost type LED constant current drive circuit (1), a boost type constant voltage circuit (2), a double-limit comparison circuit (3), a square wave generator (4) and a fault prompting circuit (5); the boost type LED constant current driving circuit (1) and the boost type constant voltage circuit (2) respectively output voltage signals to the double-limit comparison circuit (3), and the double-limit comparison circuit (3) and the square wave generator (4) are connected with the fault prompting circuit (5);
the double-limit comparison circuit (3) comprises integrated operational amplifiers A1 and A2, resistors R5, R6, R7 and R8 and diodes D1 and D2; the +5V power supply is connected with the inverting terminal of the integrated operational amplifier A1 through a resistor R5, the inverting terminal of the integrated operational amplifier A1 is connected with the non-inverting terminal of the integrated operational amplifier A2 through a resistor R6, the non-inverting terminal of the integrated operational amplifier A2 is grounded through a resistor R7, and the inverting terminal of the integrated operational amplifier A2 is connected with the non-inverting terminal of the integrated operational amplifier A1 and then is connected with an 8-pin IC seat (9); the output ends of the integrated operational amplifiers A1 and A2 are respectively connected with anodes of the diodes D1 and D2, and the cathodes of the diodes D1 and D2 are connected with one end of an AND gate M of the fault prompting circuit (5) through a resistor R8;
the square wave generator (4) comprises integrated operational amplifiers A3 and A4, resistors R11, R12, R13, R14, R15, R16, R17, capacitors C6 and C7 and diodes D3 and D4; the inverting terminal and the non-inverting terminal of the integrated operational amplifier A3 are respectively grounded through resistors R14 and R15, the two ends of the resistor R15 are connected with a capacitor C6 in parallel, the non-inverting terminal of the integrated operational amplifier A3 is connected with the output terminal of the integrated operational amplifier A3 through a resistor R16 and a capacitor C7 in sequence, the inverting terminal of the integrated operational amplifier A3 is connected with the output terminal of the integrated operational amplifier A3 through resistors R11, R12 and R13 in series in sequence, and the diodes D3 and D4 are connected with the resistor R13 in parallel after being connected in reverse parallel; the output end of the integrated operational amplifier A3 is connected with the inverting end of the integrated operational amplifier A4 through a resistor R17, the non-inverting end of the integrated operational amplifier A4 is grounded through a resistor R18, and the output end of the integrated operational amplifier A4 is connected with one end of an AND gate M of a fault prompting circuit (5);
the fault prompting circuit (5) comprises a buzzer, an AND gate M, resistors R9 and R10 and a triode T; the output end of the AND gate M is connected with the base electrode of the triode T through a resistor R9, the emitter electrode of the triode T is grounded, the collector electrode of the triode T is connected with one end of the buzzer through a resistor R10, and the other end of the buzzer is connected with the +5V power supply end.
3. The XL series boost chip detection device of claim 2, wherein: the boost type LED constant current driving circuit (1) comprises a 5-pin IC seat (6), an 8-pin IC seat (7), a resistor R1, capacitors C1, C2 and C3, an inductor L1, a Schottky diode V1 and an LED1 indicator lamp; the +5V power supply and the ground are respectively connected with a4 pin and a1 pin of a 5-pin IC seat (6) after being filtered by parallel capacitors C1 and C2 in sequence; the 1 pin of the 5-pin IC seat (6) is connected with the 5 pin thereof through a resistor R1; the 1 foot, 2 foot, 3 foot, 4 foot, 5 foot of the IC seat of the 5 foot (6) are connected with 7 foot and 8 foot, 1 foot, 5 foot and 6 foot, 2 foot, 3 foot of the IC seat of the 8 foot (7) respectively, connect with positive pole of the Schottky diode V1 and one end of inductance L1 at the same time after the 5 foot and 6 foot of the IC seat of the 8 foot (7) are connected, another end of inductance L1 is connected with 2 foot of the IC seat of the 8 foot (7), the negative pole of the Schottky diode V1 is connected with positive pole of the electric capacity C3 and positive pole of LED1 pilot lamp at the same time, the negative pole of the electric capacity C3 is grounded, the negative pole of the LED1 pilot lamp is connected with 3 foot of the IC seat of the 8 foot (7);
the boosting constant voltage circuit (2) comprises a 5-pin IC (integrated circuit) seat (8), an 8-pin IC seat (9), resistors R2 and R3, capacitors C4 and C5, an inductor L2 and a Schottky diode V2; the 4 pins of the 5-pin IC seat (8) are connected with the 4 pins of the 5-pin IC seat (6), and the 1 pin of the 5-pin IC seat (8) is connected with the 5 pins thereof through a resistor R2; the 1 foot, the 2 foot, the 3 foot, the 4 foot and the 5 foot of the 5 foot IC seat (8) are respectively connected with the 7 foot, the 8 foot, the 1 foot, the 5 foot, the 6 foot, the 2 foot and the 3 foot of the 8 foot IC seat (9), the 7 foot and the 8 foot of the 8 foot IC seat (9) are connected and then grounded, the 5 foot and the 6 foot of the 8 foot IC seat (9) are connected and then connected with the anode of the Schottky diode V2 and one end of the inductor L2, the other end of the inductor L2 is connected with the 2 foot of the 8 foot IC seat (9), the cathode of the Schottky diode V2 is connected with the 3 foot of the 8 foot IC seat (9) through a resistor R3, and capacitors C4 and C5 are sequentially connected between the cathode of the Schottky diode V2 and the ground for filtering;
and the 1 pin of the 8-pin IC seat (7) and the 1 pin of the 8-pin IC seat (9) are connected with the anode of the LED2 indicator lamp through a resistor R4, and the cathode of the LED2 indicator lamp is grounded.
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