CN202488156U - USB interface power supply control converter - Google Patents
USB interface power supply control converter Download PDFInfo
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- CN202488156U CN202488156U CN2011204189955U CN201120418995U CN202488156U CN 202488156 U CN202488156 U CN 202488156U CN 2011204189955 U CN2011204189955 U CN 2011204189955U CN 201120418995 U CN201120418995 U CN 201120418995U CN 202488156 U CN202488156 U CN 202488156U
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Abstract
The utility model discloses a USB interface power supply control converter, and belongs to the field of power supply converters. The structure of the USB interface power supply control converter comprises an upper housing, a lower housing, and a circuit board. The upper housing and the lower housing form a receiving space, and the circuit board is arranged in the receiving space. Through arranging a control switch circuit unit, a timing control circuit unit, and a low voltage detection circuit unit on the circuit board, compared with the prior art, the USB interface power supply control converter can not only realize the conversion between a common interface and a USB interface, and the power supply for a non-USB interface power consumer by using a USB interface power supply device, but also control the power supply time and carry out low voltage detection.
Description
Technical field
The utility model relates to the power supply changeover device field, is specifically related to a kind of USB interface power supply control transformation device.
Background technology
USB is the abbreviation of English Universal Serial BUS (USB), and its Chinese is abbreviating logical getting lines crossed as, is an external bus standard, is used for being connected and communication of standard computer and external equipment.Be applied in the interfacing in PC field.The plug and play of USB interface support equipment and hot plug function.USB will unite proposition in the end of the year 1994 by many companies such as Intel, Compaq, IBM, Microsoft.
Along with the computer hardware develop rapidly; Ancillary equipment is increasing, and keyboard, mouse, modulator-demodulator, printer, scanner are well-known already, and digital camera, MP3 walkman come one after another; Therefore, use USB to realize above product is inserted personal computer.In order to save consumption to battery; Reduce and pollute; USB uses has had very big expansion, except computer peripheral device possesses USB interface, and a lot of electronic products; Like mobile phone, IPAD, IPHONE and NOTEBOOK etc., all use the charger of USB interface to be connected power supply with its corresponding electronic product.
Yet; Portioned product is also arranged because the problem that self designs can not be provided with USB interface, can only use old-fashioned general-purpose interface; Be not easy to adopt the charger of the USB interface that is easy to obtain that it is supplied power at one's side; Must use the USB transducer to carry out interface conversion, and the function of USB converter of the prior art is comparatively single, generally only plays the effect of interface conversion.
Summary of the invention
In order to address the above problem; The utility model provides a kind of conversion that both can realize generic interface and USB interface; Utilize the power supply unit of USB interface that the power consumption equipment of non-USB interface is supplied power, can also control supplying time, carry out the USB interface power supply control transformation device that low pressure detects.
A kind of USB interface power supply control transformation device comprises upper casing, lower casing and circuit board, and said upper casing and lower casing form a receiving space, and said circuit board is arranged at said receiving space;
Said circuit board includes control switch circuit unit, timing control circuit unit and low-voltage testing circuit unit;
Control first output of said control switch circuit unit is connected with the timing controlled end of said timing control circuit unit;
The voltage output end of said timing control circuit unit is connected with the relatively end of said low-voltage testing circuit unit, and the voltage output end of said low-voltage testing circuit unit is connected with the voltage receiving terminal of said timing control circuit unit.
Preferably, said control switch circuit unit includes resistance R 1, resistance R 2, FET Q1 and triode Q2;
Said timing control circuit unit comprises timing chip U2, capacitor C 2 and capacitor C 3; Said low-voltage testing circuit unit comprises low pressure detection chip U3 and resistance R 11;
One end of said resistance R 1 is connected with the grid of said FET Q1 and the collector electrode of said triode Q2 respectively; Said resistance R 1 other end is connected with the 1st pin of the drain electrode of said FET Q1, said capacitor C 2 one ends, said capacitor C 3 one ends and said timing chip U2 respectively; The base stage of said triode Q2 is connected with said resistance R 2 one ends; Said resistance R 2 other ends are connected with the 7th pin of said timing chip U2, and the emitter of said triode Q2 is connected with power supply ground;
The 8th pin of said capacitor C 3 other ends and said timing chip U2 all is connected with power supply ground; The 4th pin of said timing chip U2 is connected with resistance R 11 1 ends with the 1st pin of said low pressure detection chip U3 respectively; Said resistance R 11 other ends are connected with the 3rd pin of said low pressure detection chip U3, and the 1st pin of said timing chip U2 is connected with the 3rd pin of said low pressure detection chip U3; The 2nd pin of said low pressure detection chip U3 is connected with power supply ground.
Preferred, said resistance R 1 is set to 10 kilo-ohms, and said resistance R 2 is set to 1 kilo-ohm, and said capacitor C 2 is set to 10uF, and said capacitor C 3 is set to 1uF, and said resistance R 11 is set to 100 kilo-ohms.
Another is preferred, and the model of said FET Q1 is PJ3401, and the model of said triode Q2 is MMBT2222A, and the model of said timing chip U2 is HY8P53, and the model of said low pressure detection chip U3 is PJ61N402MR.
Another is preferred, and said circuit board also includes voltage input circuit unit, insurance circuit unit, switching circuit unit, input filter circuit unit, boost control circuit unit, booster circuit unit, indicating circuit unit, current-limiting circuit unit, open loop protection circuit unit, constant-current circuit unit, output filter circuit unit and load circuit unit;
First output of said voltage input circuit unit is connected with the input of said insurance circuit unit; The output of said insurance circuit unit is connected with the control input end of said control switch circuit unit and the power end of said timing control circuit unit respectively, and control second output of said control switch circuit unit is connected with the filtering input of said input filter circuit unit;
The filtering output end of said input filter circuit unit is connected with the control input end of boosting of said boost control circuit unit; Control output first end that boosts of said boost control circuit unit is connected with input first end that boosts of said booster circuit unit; Output second end that boosts of said boost control circuit unit is connected with the current limliting input of said current-limiting circuit unit, and the current limliting output of said current-limiting circuit unit is connected with input second end that boosts of said booster circuit unit;
Output first end that boosts of said booster circuit unit is connected with the input of said open loop protection circuit unit; The output of said open loop protection circuit unit is connected with the constant current input of said constant-current circuit unit; The constant current output of said constant-current circuit unit is connected with the filtering first input end of said output filter circuit unit; Output second end that boosts of said booster circuit unit is connected with filtering second input of said output filter circuit unit, and the output of said output filter circuit unit is connected with said load circuit unit;
Second output of said voltage input circuit unit is connected with the switch input terminal of said switching circuit unit, and the output switching terminal of said switching circuit unit is connected with the switch control end of said timing control circuit unit;
The voltage output end of said timing control circuit unit is connected with the input of said indicating circuit unit.
Preferred, said voltage input circuit unit comprises USB interface J1; Said insurance circuit unit comprises fuse F1; Said switching circuit unit comprises control switch seat CON4; Said input filter circuit unit comprises capacitor C 1 and capacitor C 4; Said boost control circuit unit comprises the chip U1 that boosts, resistance R 5, resistance R 6, capacitor C 5, capacitor C 6 and capacitor C 7; Said booster circuit unit comprises inductance L 1, diode D3 and FET Q3; Said indicating circuit unit comprises resistance R 3, resistance R 4, light-emitting diode D1 and light-emitting diode D2; Said current-limiting circuit unit comprises resistance R 7; Said open loop protection circuit unit comprises diode DZ1 and resistance R 8; Said constant-current circuit unit comprises resistance R 9 and resistance R 10; Said output filter circuit unit comprises capacitor C 8 and capacitor C 9; Said load circuit unit comprises loading interfaces J3;
The 1st pin of said USB interface J1 is connected with the end of said fuse F1, and the said fuse other end is connected with said resistance R 1 other end;
The 5th pin of said USB interface J1 is connected with the 3rd pin of the 1st pin of said capacitor C 2 other ends, said control switch seat CON4, said control switch seat CON4 and the 4th pin of said control switch seat CON4 respectively;
The 2nd pin of said control switch seat CON4 is connected with the 2nd pin of said timing chip U2; The 6th pin of said timing chip U2 is connected with said resistance R 3 one ends; The said R3 other end is connected with said light-emitting diode D2 is anodal, and said light-emitting diode D1 is connected with power supply ground; The 5th pin of said timing chip U2 is connected with said resistance R 4 one ends, and said resistance R 4 other ends are connected with said light-emitting diode D1 is anodal, and said light-emitting diode negative pole is connected with power supply ground;
The source electrode of said FET Q1 is connected with the 8th pin, resistance R 5 one ends and capacitor C 4 one ends of said capacitor C 1 positive pole, inductance L 1 one ends, the chip that boosts respectively, and the negative pole of said capacitor C 1 negative pole and said capacitor C 2 is connected with power supply ground respectively;
Said resistance R 5 other ends are connected with capacitor C 5 one ends with the 2nd pin of the said chip U1 that boosts respectively; Said capacitor C 5 other ends are connected with power supply ground; The 3rd pin of the said chip U1 that boosts is connected with said resistance R 6 one ends, and said resistance R 6 other ends are connected with said capacitor C 6 one ends, and said capacitor C 6 other ends are connected with power supply ground; The 1st pin of the said chip U1 that boosts is connected with power supply ground; The 7th pin of the said chip that boosts is connected with said capacitor C 7 one ends, and the said electric capacity other end is connected with power supply ground, and the 5th pin of the said chip that boosts is connected with the grid of said FET Q3;
The 6th pin of the drain electrode of said FET Q3 and the said chip U1 that boosts is connected with said resistance R 7 one ends respectively, and said resistance R 7 other ends are connected with said power supply ground, and the 4th pin of the said chip U1 that boosts is connected with said diode DZ1 is anodal;
The source electrode of said FET Q3 is connected with said diode D3 is anodal with said inductance L 1 other end respectively; Said diode D3 negative pole is connected with the 2nd pin and said capacitor C 8 positive poles of said capacitor C 9 one ends and said diode DZ1 negative pole, said loading interfaces respectively, and said capacitor C 8 negative poles are connected with power supply ground;
Said capacitor C 9 other ends are connected with the 3rd pin of said resistance R 8 one ends, resistance R 9 one ends, resistance R 10 1 ends and said loading interfaces respectively; Said resistance R 8 other ends are connected with said diode DZ1 is anodal, and said resistance R 9 other ends are connected with power supply ground respectively with said resistance R 10 other ends.
Further, the load current value of said fuse F1 is set to 2A, and said capacitor C 1 is set to 100uF/3.5V; Said capacitor C 4 is set to 1uF, and said resistance R 5 all is set to 10 kilo-ohms with resistance R 6, and said capacitor C 5 is set to 0.1uF; Said capacitor C 6 is set to 1000pF; Said capacitor C 7 is set to 10pF, and said inductance L 1 is set to 22uH, and said diode D3 is set to SS34;
Said resistance R 3 all is set to 1 kilo-ohm with resistance R 4, and said light-emitting diode D1 is set to green LED, and said light-emitting diode D2 is set to red light emitting diodes; Said resistance R 7 is set to 0.3 ohm; The rated voltage of said diode DZ1 is 10V, and said resistance R 8 is set to 1 kilo-ohm, and said resistance R 9 all is set to 3.9 ohm with said resistance R 10; Said capacitor C 8 is set to 100Uf/3.5V, and said capacitor C 9 is set to 1uF.
Another is preferred, and the model of the said chip U1 that boosts is QX5305, and the model of said timing chip U2 is HY8P53, and the model of said low pressure detection chip U3 is PJ1N402MR, and the model of said FET Q3 is PJM3400.
Another is preferred, and said lower casing is provided with clip.
Another is preferred, and the input voltage range of said voltage input circuit unit is set to 4.5 to 5.5 volts, and the input current scope of said voltage input circuit unit is set to 500 to 1000 milliamperes.
The beneficial effect of the utility model:
A kind of USB interface power supply control transformation device of the utility model; Through be provided with control switch circuit unit, timing control circuit unit and low-voltage testing circuit unit at circuit board; Compared with prior art; Both can realize the conversion of generic interface and USB interface, and utilize the power supply unit of USB interface that the power consumption equipment of non-USB interface is supplied power, and can also control supplying time, carry out the USB interface power supply control transformation device that low pressure detects.
Description of drawings
Utilize accompanying drawing that the utility model is further specified, but the content in the accompanying drawing does not constitute any restriction to the utility model.
Fig. 1 is the structural representation of an angle of a kind of USB interface power supply control transformation device of the utility model.
Fig. 2 is the structural representation of another angle of a kind of USB interface power supply control transformation device of the utility model.
Fig. 3 is the schematic block circuit diagram of circuit board of a kind of USB interface power supply control transformation device of the utility model.
Fig. 4 is the internal circuit diagram of Fig. 3.
Description of reference numerals is following:
Red light emitting diodes 60, green LED 70.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.
embodiment 1.
Referring to Fig. 1 to Fig. 4, a kind of USB interface power supply control transformation device comprises upper casing 10, lower casing 20 and circuit board 40, and upper casing 10 forms a receiving space with lower casing 20, and circuit board 40 is arranged at receiving space;
Control first output of control switch circuit unit 404 is connected with the timing controlled end of timing control circuit unit 405;
The voltage output end of timing control circuit unit 405 is connected with the relatively end of low-voltage testing circuit unit 406, and the voltage output end of low-voltage testing circuit unit 406 is connected with the voltage receiving terminal of timing control circuit unit 405.
Control switch circuit unit 404 includes resistance R 1, resistance R 2, FET Q1 and triode Q2;
Timing control circuit unit 405 comprises timing chip U2, capacitor C 2 and capacitor C 3; Low-voltage testing circuit unit 406 comprises low pressure detection chip U3 and resistance R 11;
One end of resistance R 1 is connected with the grid of FET Q1 and the collector electrode of triode Q2 respectively; Resistance R 1 other end is connected with the 1st pin of drain electrode, capacitor C 2 one ends, capacitor C 3 one ends and the timing chip U2 of FET Q1 respectively; The base stage of triode Q2 is connected with resistance R 2 one ends; Resistance R 2 other ends are connected with the 7th pin of timing chip U2, and the emitter of triode Q2 is connected with power supply ground;
The 8th pin of capacitor C 3 other ends and timing chip U2 all is connected with power supply ground; The 4th pin of timing chip U2 is connected with resistance R 11 1 ends with the 1st pin of low pressure detection chip U3 respectively; Resistance R 11 other ends are connected with the 3rd pin of low pressure detection chip U3, and the 1st pin of timing chip U2 is connected with the 3rd pin of low pressure detection chip U3; The 2nd pin of low pressure detection chip U3 is connected with power supply ground.
Resistance R 1 is set to 10 kilo-ohms, and resistance R 2 is set to 1 kilo-ohm, and capacitor C 2 is set to 10uF, and capacitor C 3 is set to 1uF, and resistance R 11 is set to 100 kilo-ohms.
The model of FET Q1 is PJ3401, and the model of triode Q2 is MMBT2222A, and the model of timing chip U2 is HY8P53, and the model of low pressure detection chip U3 is PJ61N402MR.
A kind of USB interface power supply control transformation device of present embodiment; Through be provided with control switch circuit unit 404, timing control circuit unit 405 and low-voltage testing circuit unit 406 at circuit board 40; Compared with prior art; Both can realize the conversion of generic interface and USB interface, and utilize the power supply unit of USB interface that the power consumption equipment of non-USB interface is supplied power, and can also control supplying time, carry out the low pressure detection.
A kind of USB interface power supply control transformation device; Other structures of present embodiment are identical with embodiment 1, and difference is: circuit board 40 also includes voltage input circuit unit 401, insurance circuit unit 402, switching circuit unit 403, input filter circuit unit 407, boost control circuit unit 408, booster circuit unit 409, indicating circuit unit 410, current-limiting circuit unit 411, open loop protection circuit unit 412, constant-current circuit unit 413, output filter circuit unit 415 and load circuit unit 414;
First output of voltage input circuit unit 401 is connected with the input of insurance circuit unit 402; The output of insurance circuit unit 402 is connected with the control input end of control switch circuit unit 404 and the power end of timing control circuit unit 405 respectively, and control second output of control switch circuit unit 404 is connected with the filtering input of input filter circuit unit 407;
The filtering output end of input filter circuit unit 407 is connected with the control input end of boosting of boost control circuit unit 408; Control output first end that boosts of boost control circuit unit 408 is connected with input first end that boosts of booster circuit unit 409; Output second end that boosts of boost control circuit unit 408 is connected with the current limliting input of current-limiting circuit unit 411, and the current limliting output of current-limiting circuit unit 411 is connected with input second end that boosts of booster circuit unit 409;
Output first end that boosts of booster circuit unit 409 is connected with the input of open loop protection circuit unit; The output of open loop protection circuit unit is connected with the constant current input of constant-current circuit unit 413; The constant current output of constant-current circuit unit 413 is connected with the filtering first input end of output filter circuit unit 415; Output second end that boosts of booster circuit unit is connected with filtering second input of output filter circuit unit 415, and the output of output filter circuit unit 415 is connected with load circuit unit 414;
Second output of voltage input circuit unit 401 is connected with the switch input terminal of switching circuit unit 403, and the output switching terminal of switching circuit unit 403 is connected with the switch control end of timing control circuit unit 405;
The voltage output end of timing control circuit unit 405 is connected with the input of indicating circuit unit 410.
Voltage input circuit unit 401 comprises USB interface J1; Insurance circuit unit 402 comprises fuse F1; Switching circuit unit 403 comprises control switch seat CON4; Input filter circuit unit 407 comprises capacitor C 1 and capacitor C 4; Boost control circuit unit 408 comprises the chip U1 that boosts, resistance R 5, resistance R 6, capacitor C 5, capacitor C 6 and capacitor C 7; Booster circuit unit 409 comprises inductance L 1, diode D3 and FET Q3; Indicating circuit unit 410 comprises resistance R 3, resistance R 4, light-emitting diode D1 and light-emitting diode D2; Current-limiting circuit unit 411 comprises resistance R 7; Open loop protection circuit unit 412 comprises diode DZ1 and resistance R 8; Constant-current circuit unit 413 comprises resistance R 9 and resistance R 10; Output filter circuit unit 415 comprises capacitor C 8 and capacitor C 9; Load circuit unit 414 comprises loading interfaces J3;
The 1st pin of USB interface J1 is connected with the end of fuse F1, and the fuse other end is connected with resistance R 1 other end;
The 5th pin of USB interface J1 is connected with the 1st pin of capacitor C 2 other ends, control switch seat CON4, the 3rd pin of control switch seat CON4 and the 4th pin of control switch seat CON4 respectively;
The 2nd pin of control switch seat CON4 is connected with the 2nd pin of timing chip U2, and the 6th pin of timing chip U2 is connected with resistance R 3 one ends, and the R3 other end is connected with light-emitting diode D2 is anodal, and light-emitting diode D1 is connected with power supply ground; The 5th pin of timing chip U2 is connected with resistance R 4 one ends, and resistance R 4 other ends are connected with light-emitting diode D1 is anodal, and the light-emitting diode negative pole is connected with power supply ground;
The source electrode of FET Q1 is connected with the 8th pin, resistance R 5 one ends and capacitor C 4 one ends of capacitor C 1 positive pole, inductance L 1 one ends, the chip that boosts respectively, and the negative pole of capacitor C 1 negative pole and capacitor C 2 is connected with power supply ground respectively;
The 6th pin of the drain electrode of FET Q3 and the chip U1 that boosts is connected with resistance R 7 one ends respectively, and resistance R 7 other ends are connected with power supply ground, and the 4th pin of the chip U1 that boosts is connected with diode DZ1 is anodal;
The source electrode of FET Q3 is connected with diode D3 is anodal with inductance L 1 other end respectively, and diode D3 negative pole is connected with the 2nd pin and capacitor C 8 positive poles of capacitor C 9 one ends and diode DZ1 negative pole, loading interfaces respectively, and capacitor C 8 negative poles are connected with power supply ground;
Capacitor C 9 other ends are connected with the 3rd pin of resistance R 8 one ends, resistance R 9 one ends, resistance R 10 1 ends and loading interfaces respectively, and resistance R 8 other ends are connected with diode DZ1 is anodal, and resistance R 9 other ends are connected with power supply ground respectively with resistance R 10 other ends.
The load current value of fuse F1 is set to 2A, and capacitor C 1 is set to 100uF/3.5V, and capacitor C 4 is set to 1uF; Resistance R 5 all is set to 10 kilo-ohms with resistance R 6; Capacitor C 5 is set to 0.1uF, and capacitor C 6 is set to 1000pF, and capacitor C 7 is set to 10pF; Inductance L 1 is set to 22uH, and diode D3 is set to SS34;
The model of chip U1 of boosting is QX5305, and the model of timing chip U2 is HY8P53, and the model of low pressure detection chip U3 is PJ1N402MR, and the model of FET Q3 is PJM3400.
The operation principle of present embodiment is following:
The control switch seat connects control switch 50; Utilization has the power supply of USB interface the USB interface power supply control transformation device of present embodiment is supplied power; Click control switch 50, green LED 70 is bright, can be power consumption equipment power supply 10 minutes; Time one arrives, and USB interface power supply control transformation device quits work automatically; Double-click control switch 50, red light emitting diodes 60 is bright, can be power consumption equipment power supply 20 minutes, and the time one arrives, and USB interface power supply control transformation device quits work automatically, and the user can be according to the time of demand control use; By three times control switchs 50, red light emitting diodes 60 extinguishes, and USB interface power supply control transformation device quits work automatically.If externally fed is not enough, when detecting input voltage and be lower than 4 volts, click control switch 50, red light emitting diodes 60 glimmers and extinguishes after 30 times, and USB interface power supply control transformation device is not worked; Double-click control switch 50, extinguish after red light emitting diodes 60 flicker 30 times, USB interface power supply control transformation device is not worked; By three times control switchs 50, extinguish after red light emitting diodes 60 flickers 1 time, USB interface power supply control transformation device is not worked.
Wherein, the R of unit represents ohm.
A kind of USB interface power supply control transformation device, other structures of present embodiment are identical with embodiment 2, and difference is: lower casing 20 is provided with clip 30.The clip 30 convenient USB interface power supply control transformation devices with present embodiment that are provided with are fixed between waist or certain position.
The input voltage range of voltage input circuit unit 401 is set to 4.5 to 5.5 volts, and the input current scope of voltage input circuit unit 401 is set to 500 to 1000 milliamperes.Because the voltage range that voltage input circuit unit 401 is accepted falls identical with the voltage range and the current range of most USB electric supply installation with current range; So the person of being easy to use supplies power to USB interface control device 8 with different USB electric supply installations, reduce limitation.
Above content is merely the preferred embodiment of the utility model; For those of ordinary skill in the art; According to the thought of the utility model, the part that on embodiment and range of application, all can change, this description should not be construed as the restriction to the utility model.
Claims (10)
1. a USB interface power supply control transformation device comprises upper casing, lower casing and circuit board, and said upper casing and lower casing form a receiving space, and said circuit board is arranged in the said receiving space;
It is characterized in that: said circuit board includes control switch circuit unit, timing control circuit unit and low-voltage testing circuit unit;
Control first output of said control switch circuit unit is connected with the timing controlled end of said timing control circuit unit;
The voltage output end of said timing control circuit unit is connected with the relatively end of said low-voltage testing circuit unit, and the voltage output end of said low-voltage testing circuit unit is connected with the voltage receiving terminal of said timing control circuit unit.
2. a kind of USB interface power supply control transformation device according to claim 1, it is characterized in that: said control switch circuit unit includes resistance R 1, resistance R 2, FET Q1 and triode Q2;
Said timing control circuit unit comprises timing chip U2, capacitor C 2 and capacitor C 3; Said low-voltage testing circuit unit comprises low pressure detection chip U3 and resistance R 11;
One end of said resistance R 1 is connected with the grid of said FET Q1 and the collector electrode of said triode Q2 respectively; Said resistance R 1 other end is connected with the 1st pin of the drain electrode of said FET Q1, said capacitor C 2 one ends, said capacitor C 3 one ends and said timing chip U2 respectively; The base stage of said triode Q2 is connected with said resistance R 2 one ends; Said resistance R 2 other ends are connected with the 7th pin of said timing chip U2, and the emitter of said triode Q2 is connected with power supply ground;
The 8th pin of said capacitor C 3 other ends and said timing chip U2 all is connected with power supply ground; The 4th pin of said timing chip U2 is connected with resistance R 11 1 ends with the 1st pin of said low pressure detection chip U3 respectively; Said resistance R 11 other ends are connected with the 3rd pin of said low pressure detection chip U3, and the 1st pin of said timing chip U2 is connected with the 3rd pin of said low pressure detection chip U3; The 2nd pin of said low pressure detection chip U3 is connected with power supply ground.
3. a kind of USB interface power supply control transformation device according to claim 2; It is characterized in that: said resistance R 1 is set to 10 kilo-ohms, and said resistance R 2 is set to 1 kilo-ohm, and said capacitor C 2 is set to 10uF; Said capacitor C 3 is set to 1uF, and said resistance R 11 is set to 100 kilo-ohms.
4. a kind of USB interface power supply control transformation device according to claim 2; It is characterized in that: the model of said FET Q1 is PJ3401; The model of said triode Q2 is MMBT2222A; The model of said timing chip U2 is HY8P53, and the model of said low pressure detection chip U3 is PJ61N402MR.
5. a kind of USB interface power supply control transformation device according to claim 2, it is characterized in that: said circuit board also includes voltage input circuit unit, insurance circuit unit, switching circuit unit, input filter circuit unit, boost control circuit unit, booster circuit unit, indicating circuit unit, current-limiting circuit unit, open loop protection circuit unit, constant-current circuit unit, output filter circuit unit and load circuit unit;
First output of said voltage input circuit unit is connected with the input of said insurance circuit unit; The output of said insurance circuit unit is connected with the control input end of said control switch circuit unit and the power end of said timing control circuit unit respectively, and control second output of said control switch circuit unit is connected with the filtering input of said input filter circuit unit;
The filtering output end of said input filter circuit unit is connected with the control input end of boosting of said boost control circuit unit; Control output first end that boosts of said boost control circuit unit is connected with input first end that boosts of said booster circuit unit; Output second end that boosts of said boost control circuit unit is connected with the current limliting input of said current-limiting circuit unit, and the current limliting output of said current-limiting circuit unit is connected with input second end that boosts of said booster circuit unit;
Output first end that boosts of said booster circuit unit is connected with the input of said open loop protection circuit unit; The output of said open loop protection circuit unit is connected with the constant current input of said constant-current circuit unit; The constant current output of said constant-current circuit unit is connected with the filtering first input end of said output filter circuit unit; Output second end that boosts of said booster circuit unit is connected with filtering second input of said output filter circuit unit, and the output of said output filter circuit unit is connected with said load circuit unit;
Second output of said voltage input circuit unit is connected with the switch input terminal of said switching circuit unit, and the output switching terminal of said switching circuit unit is connected with the switch control end of said timing control circuit unit;
The voltage output end of said timing control circuit unit is connected with the input of said indicating circuit unit.
6. a kind of USB interface power supply control transformation device according to claim 5, it is characterized in that: said voltage input circuit unit comprises USB interface J1; Said insurance circuit unit comprises fuse F1; Said switching circuit unit comprises control switch seat CON4; Said input filter circuit unit comprises capacitor C 1 and capacitor C 4; Said boost control circuit unit comprises the chip U1 that boosts, resistance R 5, resistance R 6, capacitor C 5, capacitor C 6 and capacitor C 7; Said booster circuit unit comprises inductance L 1, diode D3 and FET Q3; Said indicating circuit unit comprises resistance R 3, resistance R 4, light-emitting diode D1 and light-emitting diode D2; Said current-limiting circuit unit comprises resistance R 7; Said open loop protection circuit unit comprises diode DZ1 and resistance R 8; Said constant-current circuit unit comprises resistance R 9 and resistance R 10; Said output filter circuit unit comprises capacitor C 8 and capacitor C 9; Said load circuit unit comprises loading interfaces J3;
The 1st pin of said USB interface J1 is connected with the end of said fuse F1, and the said fuse other end is connected with said resistance R 1 other end;
The 5th pin of said USB interface J1 is connected with the 3rd pin of the 1st pin of said capacitor C 2 other ends, said control switch seat CON4, said control switch seat CON4 and the 4th pin of said control switch seat CON4 respectively;
The 2nd pin of said control switch seat CON4 is connected with the 2nd pin of said timing chip U2; The 6th pin of said timing chip U2 is connected with said resistance R 3 one ends; The said R3 other end is connected with said light-emitting diode D2 is anodal, and said light-emitting diode D1 is connected with power supply ground; The 5th pin of said timing chip U2 is connected with said resistance R 4 one ends, and said resistance R 4 other ends are connected with said light-emitting diode D1 is anodal, and said light-emitting diode negative pole is connected with power supply ground;
The source electrode of said FET Q1 is connected with the 8th pin, resistance R 5 one ends and capacitor C 4 one ends of said capacitor C 1 positive pole, inductance L 1 one ends, the chip that boosts respectively, and the negative pole of said capacitor C 1 negative pole and said capacitor C 2 is connected with power supply ground respectively;
Said resistance R 5 other ends are connected with capacitor C 5 one ends with the 2nd pin of the said chip U1 that boosts respectively; Said capacitor C 5 other ends are connected with power supply ground; The 3rd pin of the said chip U1 that boosts is connected with said resistance R 6 one ends, and said resistance R 6 other ends are connected with said capacitor C 6 one ends, and said capacitor C 6 other ends are connected with power supply ground; The 1st pin of the said chip U1 that boosts is connected with power supply ground; The 7th pin of the said chip that boosts is connected with said capacitor C 7 one ends, and the said electric capacity other end is connected with power supply ground, and the 5th pin of the said chip that boosts is connected with the grid of said FET Q3;
The 6th pin of the drain electrode of said FET Q3 and the said chip U1 that boosts is connected with said resistance R 7 one ends respectively, and said resistance R 7 other ends are connected with said power supply ground, and the 4th pin of the said chip U1 that boosts is connected with said diode DZ1 is anodal;
The source electrode of said FET Q3 is connected with said diode D3 is anodal with said inductance L 1 other end respectively; Said diode D3 negative pole is connected with the 2nd pin and said capacitor C 8 positive poles of said capacitor C 9 one ends and said diode DZ1 negative pole, said loading interfaces respectively, and said capacitor C 8 negative poles are connected with power supply ground;
Said capacitor C 9 other ends are connected with the 3rd pin of said resistance R 8 one ends, resistance R 9 one ends, resistance R 10 1 ends and said loading interfaces respectively; Said resistance R 8 other ends are connected with said diode DZ1 is anodal, and said resistance R 9 other ends are connected with power supply ground respectively with said resistance R 10 other ends.
7. a kind of USB interface power supply control transformation device according to claim 6, it is characterized in that: the load current value of said fuse F1 is set to 2A, and said capacitor C 1 is set to 100uF/3.5V; Said capacitor C 4 is set to 1uF, and said resistance R 5 all is set to 10 kilo-ohms with resistance R 6, and said capacitor C 5 is set to 0.1uF; Said capacitor C 6 is set to 1000pF; Said capacitor C 7 is set to 10pF, and said inductance L 1 is set to 22uH, and said diode D3 is set to SS34;
Said resistance R 3 all is set to 1 kilo-ohm with resistance R 4, and said light-emitting diode D1 is set to green LED, and said light-emitting diode D2 is set to red light emitting diodes; Said resistance R 7 is set to 0.3 ohm; The rated voltage of said diode DZ1 is 10V, and said resistance R 8 is set to 1 kilo-ohm, and said resistance R 9 all is set to 3.9 ohm with said resistance R 10; Said capacitor C 8 is set to 100Uf/3.5V, and said capacitor C 9 is set to 1uF.
8. a kind of USB interface power supply control transformation device according to claim 6; It is characterized in that: the model of the said chip U1 that boosts is QX5305; The model of said timing chip U2 is HY8P53; The model of said low pressure detection chip U3 is PJ1N402MR, and the model of said FET Q3 is PJM3400.
9. a kind of USB interface power supply control transformation device according to claim 1, it is characterized in that: said lower casing is provided with clip.
10. a kind of USB interface power supply control transformation device according to claim 5; It is characterized in that: the input voltage range of said voltage input circuit unit is set to 4.5 to 5.5 volts, and the input current scope of said voltage input circuit unit is set to 500 to 1000 milliamperes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204189955U CN202488156U (en) | 2011-10-28 | 2011-10-28 | USB interface power supply control converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204189955U CN202488156U (en) | 2011-10-28 | 2011-10-28 | USB interface power supply control converter |
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| Publication Number | Publication Date |
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| CN202488156U true CN202488156U (en) | 2012-10-10 |
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| CN2011204189955U Expired - Fee Related CN202488156U (en) | 2011-10-28 | 2011-10-28 | USB interface power supply control converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846492A (en) * | 2016-04-06 | 2016-08-10 | 无锡小天鹅股份有限公司 | Portable ultrasonic cleaning device |
| CN106655367A (en) * | 2016-12-13 | 2017-05-10 | 东莞市艺佳电子科技有限公司 | Environment-friendly multi-functional radio battery |
-
2011
- 2011-10-28 CN CN2011204189955U patent/CN202488156U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846492A (en) * | 2016-04-06 | 2016-08-10 | 无锡小天鹅股份有限公司 | Portable ultrasonic cleaning device |
| CN105846492B (en) * | 2016-04-06 | 2019-08-23 | 无锡小天鹅电器有限公司 | Portable supersonic cleaning device |
| CN106655367A (en) * | 2016-12-13 | 2017-05-10 | 东莞市艺佳电子科技有限公司 | Environment-friendly multi-functional radio battery |
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Owner name: DR. LUMEN BEAUTY LIGHTING (SHANGHAI) BIOTECHNOLOGY Free format text: FORMER OWNER: DONGGUAN DR.LUMEN BEAUTY LIGHTING ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20141014 |
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Effective date of registration: 20141014 Address after: 200050 5F-236 room, No. 1955, Hami Road, Shanghai, Changning District Patentee after: A Luman micron (Shanghai) Biotechnology Co. Ltd. Address before: 523466 Guangdong city of Dongguan province Heng Li Zhen Huang Tang Cun Xin Si B Building 2 floor -1 Patentee before: Dongguan Dr.Lumen Beauty Lighting Electronic Technology Inc. |
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