CN204316114U - Lithium battery multi-output power supply circuit in a kind of mobile terminal - Google Patents
Lithium battery multi-output power supply circuit in a kind of mobile terminal Download PDFInfo
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- CN204316114U CN204316114U CN201420729576.7U CN201420729576U CN204316114U CN 204316114 U CN204316114 U CN 204316114U CN 201420729576 U CN201420729576 U CN 201420729576U CN 204316114 U CN204316114 U CN 204316114U
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Abstract
The utility model relates to lithium battery multi-output power supply circuit in a kind of mobile terminal, comprising, and: USB powers port, charging circuit, lithium battery power supply circuit, the first booster circuit, the second booster circuit, the first reduction voltage circuit and the second reduction voltage circuit; Described USB power supply circuits are connected with described lithium battery power supply circuit through described charging circuit; The input of described first booster circuit, the input of described second booster circuit, the input of described first reduction voltage circuit are connected with described lithium battery power supply circuit respectively with the input of described second reduction voltage circuit.In a kind of mobile terminal that the utility model proposes, lithium battery multi-output power supply circuit is that the power consumption equipment that mobile terminal increases provides abundant output interface, facilitates the increase of mobile terminal peripherals.
Description
Technical field
The utility model relates to mobile terminal power circuit, particularly lithium battery multi-output power supply circuit in a kind of mobile terminal.
Background technology
Traditional mobile terminal capable employing lithium battery is powered, and the output voltage of the lithium battery power supply circuit of routine is comparatively single, if increase other ancillary equipment on mobile terminals, usually need to continue coupling power supply according to ancillary equipment, cause great inconvenience, also add the weight of mobile terminal simultaneously; In addition, in Conventional mobile terminals, the charging of lithium battery needs the charger of coupling, and along with the increase of ancillary equipment, charging modes also can cause great inconvenience.
Summary of the invention
The purpose of this utility model is to provide lithium battery multi-output power supply circuit in a kind of mobile terminal, and to overcome the defect existed in prior art, and the utility model structure is simple, is easy to realize.
For achieving the above object, the technical solution of the utility model is: lithium battery multi-output power supply circuit in a kind of mobile terminal, it is characterized in that, comprising that: USB powers port, charging circuit, lithium battery power supply circuit, the first booster circuit, the second booster circuit, the first reduction voltage circuit and the second reduction voltage circuit; Described USB port of powering is connected with described lithium battery power supply circuit through described charging circuit; The input of described first booster circuit, the input of described second booster circuit, the input of described first reduction voltage circuit are connected with described lithium battery power supply circuit respectively with the input of described second reduction voltage circuit;
Described first booster circuit comprises: the first to the 5th resistance, the first inductance, the first to the 6th electric capacity, metal-oxide-semiconductor and chip MP3428; The BST end of described chip MP3428 is connected with described first electric capacity one end through described first resistance; The other end of described first electric capacity accesses the source electrode of described metal-oxide-semiconductor; The grid of described metal-oxide-semiconductor is held with the SDR of described chip MP3428 and is connected; SW1 to the SW5 end of described chip MP3428 is all connected with one end of described first inductance, and accesses the other end of described first electric capacity; The other end of described first inductance is connected with one end of described second electric capacity, and as the input of described first booster circuit; The other end ground connection of described second electric capacity; The SENSE end of described chip MP3428 is held with IN and is connected, and accesses the other end of described first inductance; The MODE end of described chip MP3428 is through described second grounding through resistance; The VDD_5V end of described chip MP3428 is through described 3rd capacity earth; The SS end of described chip MP3428 is through described 4th capacity earth; The COMP end of described chip MP3428 accesses one end of described 3rd resistance, the other end ground connection of described 3rd resistance through described 5th electric capacity; One end of described 4th resistance is connected with one end of described 5th resistance, and accesses the FB end of described chip MP3428; The other end ground connection of described 5th resistance; The other end of described 4th resistance is held with the OUT of described chip MP3428 and is connected, and accesses the drain electrode of described metal-oxide-semiconductor; The drain electrode of described metal-oxide-semiconductor is connected with one end of described 6th electric capacity, and as described first booster circuit output; The other end ground connection of described 6th electric capacity;
Described second booster circuit comprises: the 6th resistance, the 7th resistance, the second inductance, the 7th electric capacity, the 8th electric capacity and chip MP3422; One end of described second inductance is connected with one end of described 7th electric capacity, and as the input of described second booster circuit; The other end ground connection of described 7th electric capacity; The other end of described second inductance is held with the SW1 of described chip MP3422 respectively to hold with SW2 and is connected; The IN end of described chip MP3422 is connected with NC2 end, and accesses one end of described second inductance; One end of described 6th resistance is connected with one end of described 7th resistance, and accesses the FB end of described chip MP3422; The other end ground connection of described 7th resistance; Described 6th resistance the other end is held with the OUT1 of described chip MP3422 respectively, OUT2 holds, OUT3 holds and one end of the 8th electric capacity is connected, and as the output of described second booster circuit; The other end ground connection of described 8th electric capacity.
In the utility model one embodiment, described first reduction voltage circuit comprises: the 9th electric capacity, the tenth electric capacity and chip LC1463-18; The VCC end of described chip LC1463-18 is connected with one end of described 9th electric capacity, and as the input of described first reduction voltage circuit; The other end ground connection of described 9th electric capacity; The CE termination of described chip LC1463-18 enters the VCC end of described chip LC1463-18; The VOUT end of described chip LC1463-18 is connected with described tenth electric capacity one end, and as the output of described first reduction voltage circuit; The other end ground connection of described tenth electric capacity;
Described second reduction voltage circuit comprises: the 8th resistance, the 9th resistance, the 3rd inductance, the 11 electric capacity, the 12 electric capacity, the 13 electric capacity and chip SY8088; One end of described 11 electric capacity is held with the VIN of described chip SY8088 and is connected, and as the input of described second reduction voltage circuit; One end of described 8th resistance R4 is connected with one end of described 12 electric capacity, and accesses one end of described 9th resistance; The other end ground connection of described 9th resistance; The FB termination of described chip SY8088 enters one end of described 9th resistance; The SW end of described chip SY8088 accesses the other end of described 8th resistance through described 3rd inductance; And the other end of described 8th resistance is also connected with the other end of described 12 electric capacity, and access one end of described 13 electric capacity, and as the output of described second reduction voltage circuit.
In the utility model one embodiment, described charging circuit comprises: the tenth to the 13 resistance, the 14 to the 16 electric capacity and chip MP2602; One end of described 14 electric capacity is held with the IN of described chip MP2602 and is connected, and as the input of described charging circuit; The other end of described 14 electric capacity is held with the EN of described chip MP2602 and is connected, and ground connection; One end of described tenth resistance is connected with one end of described 14 electric capacity; The other end of described tenth resistance is connected with the other end of described 11 resistance, and accesses the NTC end of described chip MP2602; The other end ground connection of described 11 resistance; The SS end of described chip MP2602 is through the 15 capacity earth; The IBF end of described chip MP2602 is through the 12 grounding through resistance; The ISET end of described chip MP2602 is through the 13 grounding through resistance; The BATT end of described chip MP2602 is connected with one end of described 16 electric capacity, and as the output of described charging circuit; The other end ground connection of described 16 electric capacity.
Compared to prior art, the utility model has following beneficial effect: lithium battery multi-output power supply circuit in a kind of mobile terminal that the utility model proposes, provide abundant lithium battery output port, solve due to ancillary equipment increase do the problem of power supply and the charging modes inconvenience caused.
Accompanying drawing explanation
Fig. 1 is lithium battery multi-output power supply circuit in a kind of mobile terminal in the utility model.
Fig. 2 is charging circuit circuit diagram in the utility model.
Fig. 3 is the first booster circuit circuit diagram in the utility model.
Fig. 4 is the second booster circuit circuit diagram in the utility model.
Fig. 5 is the first reduction voltage circuit circuit diagram in the utility model.
Fig. 6 is the second reduction voltage circuit circuit diagram in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is specifically described.
The utility model provides lithium battery multi-output power supply circuit in a kind of mobile terminal, it is characterized in that, as shown in the figure, comprising: USB to power port, charging circuit, lithium battery power supply circuit, the first booster circuit, the second booster circuit, the first reduction voltage circuit and the second reduction voltage circuit; Described USB port of powering is connected with described lithium battery power supply circuit through described charging circuit; The input of described first booster circuit, the input of described second booster circuit, the input of described first reduction voltage circuit are connected with described lithium battery power supply circuit respectively with the input of described second reduction voltage circuit;
In the present embodiment, as shown in Figure 2, described charging circuit comprises: the tenth to the 13 resistance, the 14 to the 16 electric capacity and chip MP2602; One end of described 14 electric capacity C1 is held with the IN of described chip MP2602 and is connected, and as the input of described charging circuit, and this input and USB power, port is connected, and provides 5.0V voltage by USB feeder ear; The other end of described 14 electric capacity C1 is held with the EN of described chip MP2602 and is connected, and ground connection; One end of described tenth resistance R1 is connected with one end of described 14 electric capacity C1; The other end of described tenth resistance R1 is connected with the other end of described 11 resistance R2, and accesses the NTC end of described chip MP2602; The other end ground connection of described 11 resistance R2; The SS end of described chip MP2602 is through the 15 electric capacity C2 ground connection; The IBF end of described chip MP2602 is through the 12 resistance R3 ground connection; The ISET end of described chip MP2602 is through the 13 resistance R4 ground connection; The BATT end of described chip MP2602 is connected with one end of described 16 electric capacity C3, and as the output of described charging circuit, output voltage and the described lithium battery power supply circuit of this output match, and in the present embodiment in adopt single-unit high-multiplying power discharge lithium battery; The other end ground connection of described 16 electric capacity C3.
As shown in Figure 3, described first booster circuit comprises: the first to the 5th resistance, the first inductance, the first to the 6th electric capacity, metal-oxide-semiconductor and chip MP3428; The BST end of described chip MP3428 is connected with described first electric capacity C107 one end through described first resistance R34; The other end of described first electric capacity C107 accesses the source electrode of described metal-oxide-semiconductor; The grid of described metal-oxide-semiconductor is held with the SDR of described chip MP3428 and is connected; SW1 to the SW5 end of described chip MP3428 is all connected with one end of described first inductance L 3, and accesses the other end of described first electric capacity C107; The other end of described first inductance L 3 is connected with one end of described second electric capacity C86, and as the input of described first booster circuit; The other end ground connection of described second electric capacity C86; The SENSE end of described chip MP3428 is held with IN and is connected, and accesses the other end of described first inductance L 3; The MODE end of described chip MP3428 is through described second resistance R40 ground connection; The VDD_5V end of described chip MP3428 is through described 3rd electric capacity C105 ground connection; The SS end of described chip MP3428 is through described 4th electric capacity C106 ground connection; The COMP end of described chip MP3428 accesses one end of described 3rd resistance R36, the other end ground connection of described 3rd resistance R36 through described 5th electric capacity C110; One end of described 4th resistance R69 is connected with one end of described 5th resistance R74, and accesses the FB end of described chip MP3428; The other end ground connection of described 5th resistance R74; The other end of described 4th resistance R69 is held with the OUT of described chip MP3428 and is connected, and accesses the drain electrode of described metal-oxide-semiconductor; The drain electrode of described metal-oxide-semiconductor is connected with one end of described 6th electric capacity C100, and as described first booster circuit output, in the present embodiment, the output of this first booster circuit exports 8.0V voltage; The other end ground connection of described 6th electric capacity C100;
As shown in Figure 4, described second booster circuit comprises: the 6th resistance, the 7th resistance, the second inductance, the 7th electric capacity, the 8th electric capacity and chip MP3422; One end of described second inductance L 4 is connected with one end of described 7th electric capacity C76, and as the input of described second booster circuit; The other end ground connection of described 7th electric capacity C76; The other end of described second inductance L 4 is held with the SW1 of described chip MP3422 respectively to hold with SW2 and is connected; The IN end of described chip MP3422 is connected with NC2 end, and accesses one end of described second inductance L 4; One end of described 6th resistance R66 is connected with one end of described 7th resistance R47, and accesses the FB end of described chip MP3422; The other end ground connection of described 7th resistance R47; Described 6th resistance R66 the other end is held with the OUT1 of described chip MP3422 respectively, OUT2 holds, OUT3 holds and one end of the 8th electric capacity C77 is connected, and as the output of described second booster circuit, in the present embodiment, this second booster circuit exports 5.0V voltage; The other end ground connection of described 8th electric capacity C77.
In the present embodiment, as shown in Figure 5, described first reduction voltage circuit comprises: the 9th electric capacity, the tenth electric capacity and chip LC1463-18; The VCC end of described chip LC1463-18 is connected with one end of described 9th electric capacity C169, and as the input of described first reduction voltage circuit; The other end ground connection of described 9th electric capacity C169; The CE termination of described chip LC1463-18 enters the VCC end of described chip LC1463-18; The VOUT end of described chip LC1463-18 is connected with described tenth electric capacity C67 one end, and as the output of described first reduction voltage circuit; The other end ground connection of described tenth electric capacity C67;
As shown in Figure 6, described second reduction voltage circuit comprises: the 8th resistance, the 9th resistance, the 3rd inductance, the 11 electric capacity, the 12 electric capacity, the 13 electric capacity and chip SY8088; One end of described 11 electric capacity C236 is held with the VIN of described chip SY8088 and is connected, and as the input of described second reduction voltage circuit; One end of described 8th resistance R4 is connected with one end of described 12 electric capacity C114, and accesses one end of described 9th resistance R92; The other end ground connection of described 9th resistance R92; The FB termination of described chip SY8088 enters one end of described 9th resistance R92; The SW end of described chip SY8088 accesses the other end of described 8th resistance R4 through described 3rd inductance L 27; And the other end of described 8th resistance R4 is also connected with the other end of described 12 electric capacity C114, and access one end of described 13 electric capacity C214, and as the output of described second reduction voltage circuit, be originally in embodiment, the output voltage of this second reduction voltage circuit is 1.2V.
Be more than preferred embodiment of the present utility model, all changes done according to technical solutions of the utility model, when the function produced does not exceed the scope of technical solutions of the utility model, all belong to protection range of the present utility model.
Claims (3)
1. a lithium battery multi-output power supply circuit in mobile terminal, is characterized in that, comprising, and: USB powers port, charging circuit, lithium battery power supply circuit, the first booster circuit, the second booster circuit, the first reduction voltage circuit and the second reduction voltage circuit; Described USB port of powering is connected with described lithium battery power supply circuit through described charging circuit; The input of described first booster circuit, the input of described second booster circuit, the input of described first reduction voltage circuit are connected with described lithium battery power supply circuit respectively with the input of described second reduction voltage circuit;
Described first booster circuit comprises: the first to the 5th resistance, the first inductance, the first to the 6th electric capacity, metal-oxide-semiconductor and chip MP3428; The BST end of described chip MP3428 is connected with described first electric capacity one end through described first resistance; The other end of described first electric capacity accesses the source electrode of described metal-oxide-semiconductor; The grid of described metal-oxide-semiconductor is held with the SDR of described chip MP3428 and is connected; SW1 to the SW5 end of described chip MP3428 is all connected with one end of described first inductance, and accesses the other end of described first electric capacity; The other end of described first inductance is connected with one end of described second electric capacity, and as the input of described first booster circuit; The other end ground connection of described second electric capacity; The SENSE end of described chip MP3428 is held with IN and is connected, and accesses the other end of described first inductance; The MODE end of described chip MP3428 is through described second grounding through resistance; The VDD_5V end of described chip MP3428 is through described 3rd capacity earth; The SS end of described chip MP3428 is through described 4th capacity earth; The COMP end of described chip MP3428 accesses one end of described 3rd resistance, the other end ground connection of described 3rd resistance through described 5th electric capacity; One end of described 4th resistance is connected with one end of described 5th resistance, and accesses the FB end of described chip MP3428; The other end ground connection of described 5th resistance; The other end of described 4th resistance is held with the OUT of described chip MP3428 and is connected, and accesses the drain electrode of described metal-oxide-semiconductor; The drain electrode of described metal-oxide-semiconductor is connected with one end of described 6th electric capacity, and as described first booster circuit output; The other end ground connection of described 6th electric capacity;
Described second booster circuit comprises: the 6th resistance, the 7th resistance, the second inductance, the 7th electric capacity, the 8th electric capacity and chip MP3422; One end of described second inductance is connected with one end of described 7th electric capacity, and as the input of described second booster circuit; The other end ground connection of described 7th electric capacity; The other end of described second inductance is held with the SW1 of described chip MP3422 respectively to hold with SW2 and is connected; The IN end of described chip MP3422 is connected with NC2 end, and accesses one end of described second inductance; One end of described 6th resistance is connected with one end of described 7th resistance, and accesses the FB end of described chip MP3422; The other end ground connection of described 7th resistance; Described 6th resistance the other end is held with the OUT1 of described chip MP3422 respectively, OUT2 holds, OUT3 holds and one end of the 8th electric capacity is connected, and as the output of described second booster circuit; The other end ground connection of described 8th electric capacity.
2. lithium battery multi-output power supply circuit in a kind of mobile terminal according to claim 1, is characterized in that: described first reduction voltage circuit comprises: the 9th electric capacity, the tenth electric capacity and chip LC1463-18; The VCC end of described chip LC1463-18 is connected with one end of described 9th electric capacity, and as the input of described first reduction voltage circuit; The other end ground connection of described 9th electric capacity; The CE termination of described chip LC1463-18 enters the VCC end of described chip LC1463-18; The VOUT end of described chip LC1463-18 is connected with described tenth electric capacity one end, and as the output of described first reduction voltage circuit; The other end ground connection of described tenth electric capacity;
Described second reduction voltage circuit comprises: the 8th resistance, the 9th resistance, the 3rd inductance, the 11 electric capacity, the 12 electric capacity, the 13 electric capacity and chip SY8088; One end of described 11 electric capacity is held with the VIN of described chip SY8088 and is connected, and as the input of described second reduction voltage circuit; One end of described 8th resistance R4 is connected with one end of described 12 electric capacity, and accesses one end of described 9th resistance; The other end ground connection of described 9th resistance; The FB termination of described chip SY8088 enters one end of described 9th resistance; The SW end of described chip SY8088 accesses the other end of described 8th resistance through described 3rd inductance; And the other end of described 8th resistance is also connected with the other end of described 12 electric capacity, and access one end of described 13 electric capacity, and as the output of described second reduction voltage circuit.
3. lithium battery multi-output power supply circuit in a kind of mobile terminal according to claim 1, is characterized in that: described charging circuit comprises: the tenth to the 13 resistance, the 14 to the 16 electric capacity and chip MP2602; One end of described 14 electric capacity is held with the IN of described chip MP2602 and is connected, and as the input of described charging circuit; The other end of described 14 electric capacity is held with the EN of described chip MP2602 and is connected, and ground connection; One end of described tenth resistance is connected with one end of described 14 electric capacity; The other end of described tenth resistance is connected with the other end of described 11 resistance, and accesses the NTC end of described chip MP2602; The other end ground connection of described 11 resistance; The SS end of described chip MP2602 is through the 15 capacity earth; The IBF end of described chip MP2602 is through the 12 grounding through resistance; The ISET end of described chip MP2602 is through the 13 grounding through resistance; The BATT end of described chip MP2602 is connected with one end of described 16 electric capacity, and as the output of described charging circuit; The other end ground connection of described 16 electric capacity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420729576.7U CN204316114U (en) | 2014-11-29 | 2014-11-29 | Lithium battery multi-output power supply circuit in a kind of mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420729576.7U CN204316114U (en) | 2014-11-29 | 2014-11-29 | Lithium battery multi-output power supply circuit in a kind of mobile terminal |
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| CN204316114U true CN204316114U (en) | 2015-05-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915050A (en) * | 2016-04-28 | 2016-08-31 | 西安航天民芯科技有限公司 | I2C controlled four-channel outputting adjustable power supply managing system |
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2014
- 2014-11-29 CN CN201420729576.7U patent/CN204316114U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915050A (en) * | 2016-04-28 | 2016-08-31 | 西安航天民芯科技有限公司 | I2C controlled four-channel outputting adjustable power supply managing system |
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