CN208143097U - A kind of multifunctional power adapter of band USB and socket output - Google Patents
A kind of multifunctional power adapter of band USB and socket output Download PDFInfo
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- CN208143097U CN208143097U CN201721903339.8U CN201721903339U CN208143097U CN 208143097 U CN208143097 U CN 208143097U CN 201721903339 U CN201721903339 U CN 201721903339U CN 208143097 U CN208143097 U CN 208143097U
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Abstract
The utility model discloses the multifunctional power adapters that a kind of band USB and socket are exported, including AC socket, and the protection circuit being electrically connected with AC socket its output end, and the rectification and EMI filter circuit being electrically connected with protection its output end of circuit, and the transformer isolation circuit being electrically connected with rectification and EMI filter circuit its output end, and the pwm control circuit of transformer isolation circuit electrical connection, and the transformer being electrically connected respectively with transformer isolation circuit and pwm control circuit, and the DC output circuit being electrically connected with transformer its secondary coil, and the mobile phone protocol recognition circuit being electrically connected with DC output circuit its output end；The multifunctional power adapter exported with USB and socket of the utility model, the output of integrated multipath AC socket simultaneously on USB adapter, can be in the limited situation of power outlet, such as when using adaptor charge in motor-car high-speed rail, the number of AC socket can be extended, while meeting charging normal for mobile phone.
Description
Technical field
The utility model relates to a kind of power supply adaptors, and in particular to a kind of multifunctional power of band USB and socket output
Adapter belongs to power supply adaptor technical field.
Background technique
Adapter is an interface convertor, it can be an independent hardware interface device, allows hardware or electronics
Interface is connected with other hardware or electrical interface, is also possible to information interface；Power supply adaptor is one kind of adapter, is small
The power supply conversion equipment of type portable electronic device and electronic apparatus, generally by shell, transformer, inductance, capacitor, control
The components such as IC, pcb board composition, its working principle are converted to direct current output by exchange input；It can be divided by connection type slotting
Wall and Table top type；It is matched in the equipment such as security protection camera, set-top box, router, lamp bar, massage device and mobile phone extensively；It passes
The power supply adaptor of system can only be to a power supply unit charging, but the problem is that power outlet is limited, when only one is inserted
Charger will occupy the use of other electrical equipments when seat, cause no outlet to be powered to other with equipment, influence it
The use of its electrical appliance.
Utility model content
The multifunctional power adapter of in order to solve the above problems, the utility model proposes band USB and socket output a kind of,
The output of integrated multipath AC socket simultaneously, can such as make in motor-car high-speed rail in the limited situation of power outlet on USB adapter
When with adaptor charge, the number of AC socket can be extended, while meeting charging normal for mobile phone.
The multifunctional power adapter exported with USB and socket of the utility model, including AC socket, and with AC socket its
Output end electrical connection protection circuit, and with protection its output end of circuit be electrically connected rectification and EMI filter circuit, and with it is whole
The PWM control of the transformer isolation circuit and the electrical connection of transformer isolation circuit of stream and the electrical connection of its output end of EMI filter circuit
Circuit, and the transformer being electrically connected respectively with transformer isolation circuit and pwm control circuit, and its secondary coil is electric with transformer
The DC output circuit of connection, and the mobile phone protocol recognition circuit being electrically connected with DC output circuit its output end；The mobile phone agreement
Identification circuit is connect with mobile communication；
The AC socket of multiple parallel connections is provided on the AC socket；Described its input terminal of AC socket is connected to alternating current；
The protection circuit includes fuse, thermistor and varistor；The varistor respectively with fuse and
The electrical connection of thermistor one end；Its input terminal is electrically connected with AC socket respectively for the fuse and thermistor its other end；
The rectification and EMI filter circuit include inductance, bridge rectifier, and its output end is electric with bridge rectifier
The π type filter circuit of connection；
The transformer isolation circuit includes high-voltage starting circuit, and the RCD being electrically connected with high-voltage starting circuit absorbs electricity
Road is electrically connected；
The pwm control circuit includes pwm chip and its peripheral circuit；
The DC output circuit includes synchronous rectification unit, and the filter element being electrically connected with synchronous rectification unit；It is described
Synchronous rectification unit is electrically connected with its secondary coil of transformer；The filter element and its input terminal of mobile phone protocol recognition circuit electricity
Connection；
The mobile phone protocol recognition circuit is made of binary channels identification chip, two USB interfaces and its peripheral circuit.
Further, the π type filter circuit is by the first inductance, the second inductance, the first filter capacitor and the second filtered electrical
Hold composition；First inductance both ends are electrically connected with the first filter capacitor and the second filter capacitor respectively；First filter capacitor
Its other end is respectively electrically connected to the second inductance both ends with the second filter capacitor.
Further, the high-voltage starting circuit is sequentially connected in series by the 5th resistance, the 6th resistance and the 7th resistance.
Further, the RCD absorbing circuit includes first diode, first capacitor, second resistance, 3rd resistor and
Four resistance；The first capacitor and second resistance are in parallel；The 3rd resistor and the 4th resistor coupled in parallel；The first capacitor and
The parallel circuit that two resistance are constituted is electrically connected with the parallel circuit that 3rd resistor and the 4th resistance are constituted；The first diode with
3rd resistor is electrically connected.
Further, the pwm chip is OB2560C chip；Its peripheral circuit of the pwm chip includes steady
Press unit, over-current protecting unit and low-voltage power supply unit；The voltage regulation unit include the 8th resistance, and with the 8th resistor coupled in parallel
9th resistance, and with concatenated tenth resistance of the 8th resistance；8th resistance, the 9th resistance and the tenth resistance respectively with
The electrical connection of its first pin of OB2560C chip；The over-current protecting unit is by twelfth resistor, thirteenth resistor and the 14th electricity
Resistance is successively formed in parallel, and its parallel connected end is electrically connected to its 4th pin of OB2560C chip；The low-voltage power supply unit includes the
Two diodes, and the 16th resistance being electrically connected with the second diode its cathode, and be electrically connected with the 16th resistance other end
4th capacitor；16th resistance and the 4th its connecting pin of capacitor are electrically connected to its 6th pin of OB2560C chip.
Further, the synchronous rectification unit includes synchronous rectifying controller, and with its third of synchronous rectifying controller
Pin, the 4th pin and the 5th pin electrical connection the 19th resistance, the 20th resistance and the 21st resistance, and with it is synchronous whole
6th capacitor of its first pin of stream controller electrical connection, and the metal-oxide-semiconductor being electrically connected with the 19th resistance and the 20th resistance；Institute
Stating metal-oxide-semiconductor its source electrode, its second pin is electrically connected with synchronous rectifying controller, and metal-oxide-semiconductor and synchronous rectifying controller its electrical connection
End is electrically connected with filter element；19th resistance and the 20th resistance are electrically connected with its grid of metal-oxide-semiconductor and drain electrode respectively；Institute
Filter element is stated to be made of third filter capacitor and the 4th filter capacitor parallel connection.
Still further, the synchronous rectifying controller is OB2001 chip
Further, the binary channels identification chip is UC2634 chip.
Compared with prior art, the multifunctional power exported with USB and socket of the utility model is suitable
Orchestration, integrated multipath AC socket exports on USB adapter, safe electricity consumption can be provided for mobile phone, and can extend AC socket,
Convenient power supply is provided to electrical appliance, is not required to outer pull the wire, it is beautiful, practical.
Detailed description of the invention
Fig. 1 is the integrated circuit schematic diagram of the utility model.
Fig. 2 is the AC socket circuit schematic diagram of the utility model.
Fig. 3 is the protection circuit circuit diagram of the utility model.
Fig. 4 is the rectification and EMI filter circuit schematic diagram of the utility model.
Fig. 5 is the transformer isolation circuit diagram of the utility model.
Fig. 6 is the pwm control circuit schematic diagram of the utility model.
Fig. 7 is the DC output circuit schematic diagram of the utility model.
Fig. 8 is the mobile phone protocol recognition circuit schematic diagram of the utility model.
Specific embodiment
The multifunctional power adapter exported with USB and socket as shown in Figures 1 to 8, including AC socket 1, and and AC
The protection circuit 2 of its output end of socket 1 electrical connection, and the rectification and EMI filtered electrical that are electrically connected with protection its output end of circuit 2
Road 3, and the transformer isolation circuit 4 and transformer isolation circuit 4 that are electrically connected with rectification and EMI filter circuit 3 its output end are electric
The pwm control circuit 5 of connection, and the transformer T1 being electrically connected respectively with transformer isolation circuit 4 and pwm control circuit 5, and with
The DC output circuit 6 of its secondary coil of transformer T1 electrical connection, and the mobile phone agreement being electrically connected with DC output circuit 6 its output end
Identification circuit 7；The mobile phone protocol recognition circuit 7 and mobile phone（It is not shown）Communication connection；
AC socket A1 ~ A3 of multiple parallel connections is provided on the AC socket 1；AC socket A1 ~ A3 its input terminal L/N connects
It is connected to alternating current；
The protection circuit 2 includes fuse F1, thermistor NTC1 and varistor MOV1；The varistor MOV1
It is electrically connected respectively with fuse F1 and the one end thermistor NTC1；The F1 and its other end of thermistor NTC1 are slotting with AC respectively
Mouth its input terminal L/N electrical connection；
The rectification and EMI filter circuit 3 include inductance LF1, bridge rectifier, and it is exported with bridge rectifier
Hold the π type filter circuit of electrical connection；
4 circuit of transformer isolation includes high-voltage starting circuit, and the RCD being electrically connected with high-voltage starting circuit absorbs electricity
Road is electrically connected；
The pwm control circuit 5 includes pwm chip U1 and its peripheral circuit；
The DC output circuit 6 includes including synchronous rectification unit, and the filter element being electrically connected with synchronous rectification unit；
Its secondary coil is electrically connected the synchronous rectification unit with transformer T1；The filter element and mobile phone protocol recognition circuit 7 its
Input terminal electrical connection；
The mobile phone protocol recognition circuit 7 is by binary channels identification chip U4, two USB interface USB1, USB2 and its periphery electricity
Road is constituted.
The π type filter circuit is by the first inductance L1, the second inductance L2, the first filter capacitor CE1 and the second filter capacitor
CE2 composition；The both ends first inductance L1 are electrically connected with the first filter capacitor CE1 and the second filter capacitor CE2 respectively；Described first
Filter capacitor CE1 and second filter capacitor CE2 its other end are respectively electrically connected to the second both ends inductance L2.
The high-voltage starting circuit is sequentially connected in series by the 5th resistance R5, the 6th resistance R6 and the 7th resistance R7.
The RCD absorbing circuit includes first diode D1, first capacitor C1, second resistance R2,3rd resistor R3 and
Four resistance R4；The first capacitor C1 and second resistance R2 are in parallel；The 3rd resistor R3 and the 4th resistance R4 are in parallel；Described
The parallel circuit that one capacitor C1 and second resistance R2 is constituted is electrically connected with 3rd resistor R3 and the 4th resistance R4 parallel circuit constituted
It connects；The first diode D1 and 3rd resistor R3 is electrically connected.
The pwm chip U1 is OB2560C chip；Described its peripheral circuit of pwm chip U1 includes pressure stabilizing list
Member, over-current protecting unit and low-voltage power supply unit；The voltage regulation unit includes the 8th resistance R8, and in parallel with the 8th resistance R8
9th resistance R9, and with the concatenated tenth resistance R10 of the 8th resistance R8；The 8th resistance R8, the 9th resistance R9 and the tenth electricity
Hindering R10, its first pin is electrically connected with OB2560C chip respectively；The over-current protecting unit is by twelfth resistor R12, the 13rd
Resistance R13 and the 14th resistance R14 are successively formed in parallel, and its parallel connected end is electrically connected to its 4th pin of OB2560C chip；Institute
Stating low-voltage power supply unit includes the second diode D2, and the 16th resistance R16 being electrically connected with second diode D2 its cathode, and
The 4th capacitor C4 being electrically connected with the 16th resistance R16 other end；The 16th resistance R16 and the 4th its connecting pin capacitor R4
It is electrically connected to its 6th pin of OB2560C chip.
The synchronous rectification unit includes synchronous rectifying controller U2, and with synchronous rectifying controller U2 its third pin,
4th pin and the 5th pin electrical connection the 19th resistance R19, the 20th resistance R20 and the 21st resistance R21, and with it is same
The 6th capacitor C6 of its first pin of commutation controller U2 electrical connection is walked, and is electrically connected with the 19th resistance R19 and the 20th resistance
The metal-oxide-semiconductor Q2 connect；Its second pin is electrically connected described its source electrode of metal-oxide-semiconductor Q2 with synchronous rectifying controller U2, and metal-oxide-semiconductor Q2 and same
Step its electric connecting terminal of commutation controller U1 is electrically connected with filter element；The 19th resistance R19 and the 20th resistance R20 difference
It is electrically connected with its grid of metal-oxide-semiconductor Q2 and drain electrode；The filter element by third filter capacitor CE3 and the 4th filter capacitor CE4 simultaneously
Connection is constituted.
The synchronous rectifying controller U2 is OB2001 chip.
The binary channels identification chip U4 is UC2634 chip.
Multifunctional power adapter its working principle exported with USB and socket of the utility model：
1）AC socket：AC input port increases by 3 AC sockets, reaches extension power supply effect；
2）Protect circuit：The end L inline fuse is inputted, when catastrophe failure occurs for charger, fuse can fuse in time,
The electric current output for cutting off circuit below, prevents product from more serious security risk occur；Input N-terminal series thermal-sensitive resistance and L, N
Parallel connection varistor in both ends can effectively absorb the surging signal of input terminal, reduce its impact and damage to next stage circuit；
3）Rectification and EMI filter circuit：Pass through the common mode interference in inductance suppression circuit；Then pass through bridge rectifier
AC signal will be changing into the direct current signal of pulsation；Remaining AC signal is further filtered out and to differential mode by the filtering of π type again
Interference signal decays；
4）Transformer isolation circuit：Enabling signal is provided by high-voltage starting circuit for synchronous rectification chip；By RCD high
Absorbing circuit is pressed, the drain electrode crest voltage of limiting transformer main coil reduces the switching damage of metal-oxide-semiconductor；
5）Pwm control circuit：By the stabilization of voltage regulation unit control output voltage；It was provided by over-current protecting unit for output
Stream protection；It is synchronous rectification chip low-voltage power supply by low-voltage power supply unit；
6）DC output circuit：Rectification, while improving energy efficiency are synchronized by synchronous rectification unit；Then pass through filter element
The alternating component having in output voltage after synchronous rectification is filtered, to obtain smooth direct current component, and is assisted by mobile phone
View identification circuit is powered to mobile phone；
7）Mobile phone protocol recognition circuit：Mobile phone is communicated by the end USB interface D+/D- and binary channels identification chip, according to hand
Machine demand provides different electric currents.
Above-described embodiment is only the better embodiment of the utility model, therefore all according to the utility model patent application range
The equivalent change or modification that the structure, feature and principle is done, is included in the scope of the utility model patent application.
Claims (8)
1. the multifunctional power adapter of a kind of band USB and socket output, it is characterised in that：Including AC socket, and with AC socket
The protection circuit of its output end electrical connection, and the rectification and EMI filter circuit that are electrically connected with protection its output end of circuit, and with
The PWM control of the transformer isolation circuit and the electrical connection of transformer isolation circuit of rectification and the electrical connection of its output end of EMI filter circuit
Circuit processed, and the transformer being electrically connected respectively with transformer isolation circuit and pwm control circuit, and with its secondary coil of transformer
The DC output circuit of electrical connection, and the mobile phone protocol recognition circuit being electrically connected with DC output circuit its output end；The mobile phone association
View identification circuit is connect with mobile communication；
The AC socket of multiple parallel connections is provided on the AC socket；Described its input terminal of AC socket is connected to alternating current；
The protection circuit includes fuse, thermistor and varistor；The varistor respectively with fuse and temperature-sensitive
The electrical connection of resistance one end；Its input terminal is electrically connected with AC socket respectively for the fuse and thermistor its other end；
The rectification and EMI filter circuit include inductance, bridge rectifier, and its output end is electrically connected with bridge rectifier
π type filter circuit；
The transformer isolation circuit includes high-voltage starting circuit, and the RCD absorbing circuit electricity being electrically connected with high-voltage starting circuit
Even；
The pwm control circuit includes pwm chip and its peripheral circuit；
The DC output circuit includes synchronous rectification unit, and the filter element being electrically connected with synchronous rectification unit；The synchronization
Rectification unit is electrically connected with its secondary coil of transformer；The filter element is electrically connected with its input terminal of mobile phone protocol recognition circuit
It connects；
The mobile phone protocol recognition circuit is made of binary channels identification chip, two USB interfaces and its peripheral circuit.
2. the multifunctional power adapter of band USB according to claim 1 and socket output, it is characterised in that：The π type
Filter circuit is made of the first inductance, the second inductance, the first filter capacitor and the second filter capacitor；First inductance both ends point
It is not electrically connected with the first filter capacitor and the second filter capacitor；First filter capacitor and its other end of the second filter capacitor difference
It is electrically connected to the second inductance both ends.
3. the multifunctional power adapter of band USB according to claim 1 and socket output, it is characterised in that：The height
Pressure start-up circuit is sequentially connected in series by the 5th resistance, the 6th resistance and the 7th resistance.
4. the multifunctional power adapter of band USB according to claim 1 and socket output, it is characterised in that：The RCD
Absorbing circuit includes first diode, first capacitor, second resistance, 3rd resistor and the 4th resistance；The first capacitor and
Two resistor coupled in parallel；The 3rd resistor and the 4th resistor coupled in parallel；The parallel circuit that the first capacitor and second resistance are constituted with
The parallel circuit electrical connection that 3rd resistor and the 4th resistance are constituted；The first diode and 3rd resistor are electrically connected.
5. the multifunctional power adapter of band USB according to claim 1 and socket output, it is characterised in that：The PWM
Control chip is OB2560C chip；Its peripheral circuit of the pwm chip includes voltage regulation unit, over-current protecting unit and low
Press power supply unit；The voltage regulation unit includes the 8th resistance, and the 9th resistance with the 8th resistor coupled in parallel, and with the 8th resistance string
Tenth resistance of connection；Its first pin is electrically connected with OB2560C chip respectively for 8th resistance, the 9th resistance and the tenth resistance
It connects；The over-current protecting unit is successively formed in parallel by twelfth resistor, thirteenth resistor and the 14th resistance, and its parallel connected end
It is electrically connected to its 4th pin of OB2560C chip；The low-voltage power supply unit include the second diode, and with the second diode its
16th resistance of cathode electrical connection, and the 4th capacitor being electrically connected with the 16th resistance other end；16th resistance and
4th its connecting pin of capacitor is electrically connected to its 6th pin of OB2560C chip.
6. the multifunctional power adapter of band USB according to claim 1 and socket output, it is characterised in that：It is described same
Walking rectification unit includes synchronous rectifying controller, and with synchronous rectifying controller its third pin, the 4th pin and the 5th pin
The 19th resistance, the 20th resistance and the 21st resistance of electrical connection, and its first pin is electrically connected with synchronous rectifying controller
The 6th capacitor connect, and the metal-oxide-semiconductor being electrically connected with the 19th resistance and the 20th resistance；Its source electrode of the metal-oxide-semiconductor with it is synchronous whole
The electrical connection of its second pin of stream controller, and metal-oxide-semiconductor and synchronous rectifying controller its electric connecting terminal are electrically connected with filter element；Institute
The 19th resistance and the 20th resistance is stated to be electrically connected with its grid of metal-oxide-semiconductor and drain electrode respectively；The filter element is filtered by third
Capacitor and the 4th filter capacitor parallel connection are constituted.
7. the multifunctional power adapter of band USB according to claim 6 and socket output, it is characterised in that：It is described same
Step commutation controller is OB2001 chip.
8. the multifunctional power adapter of band USB according to claim 1 and socket output, it is characterised in that：It is described double
Channel recognition chip is UC2634 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721903339.8U CN208143097U (en) | 2017-12-29 | 2017-12-29 | A kind of multifunctional power adapter of band USB and socket output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721903339.8U CN208143097U (en) | 2017-12-29 | 2017-12-29 | A kind of multifunctional power adapter of band USB and socket output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208143097U true CN208143097U (en) | 2018-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721903339.8U Active CN208143097U (en) | 2017-12-29 | 2017-12-29 | A kind of multifunctional power adapter of band USB and socket output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208143097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019060A (en) * | 2020-08-28 | 2020-12-01 | 东莞市大忠电子有限公司 | Vehicle-mounted AC/DC quick-charging power adapter circuit |
-
2017
- 2017-12-29 CN CN201721903339.8U patent/CN208143097U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019060A (en) * | 2020-08-28 | 2020-12-01 | 东莞市大忠电子有限公司 | Vehicle-mounted AC/DC quick-charging power adapter circuit |
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