CN205178587U - Novel portable power source circuit of structure - Google Patents
Novel portable power source circuit of structure Download PDFInfo
- Publication number
- CN205178587U CN205178587U CN201520997205.1U CN201520997205U CN205178587U CN 205178587 U CN205178587 U CN 205178587U CN 201520997205 U CN201520997205 U CN 201520997205U CN 205178587 U CN205178587 U CN 205178587U
- Authority
- CN
- China
- Prior art keywords
- discharge
- drain electrode
- power source
- charge
- pmos
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a novel portable power source circuit of structure, including charging with 1 tub PMOS, discharging with 2 tubs PMOS and charge -discharge sharing NMOS pipe, wherein, charge and be connected with voltage input end VIN with 1 tub PMOS's drain electrode, discharge and be connected with voltage output end VOUT with 2 tubs PMOS's drain electrode, charge with 1 tub PMOS with discharge with 2 tubs PMOS's source electrode respectively with the drain electrode of charge -discharge sharing NMOS pipe is connected, the drain electrode of charge -discharge sharing NMOS pipe still loops through inductance L, sampling resistor RS and output capacitance C and is connected with external power source BATT. Compared with the prior art, the utility model: the utility model discloses an on -off of the mode of stepping down the charge function and the function of stepping up in step can be realized in step to the portable power source circuit, and reduced by a power tube in this circuit, the cost is reduced has improved work efficiency.
Description
Technical field
The utility model relates to a kind of portable power source circuit of new structure.
Background technology
Existing portable power source discharge and recharge chip, under the framework adopting switching regulator discharge and recharge, at least needs four power tubes could realize charging and discharging function.And in charging and discharging process, power flow there are three power tubes, reduce the efficiency of discharge and recharge.
Utility model content
The utility model object is the portable power source circuit that the defect existed for prior art provides a kind of new structure.
The utility model for achieving the above object, adopts following technical scheme: a kind of portable power source circuit of new structure, comprise charging PMOS1 manage, discharge with PMOS2 pipe and discharge and recharge share NMOS tube; Wherein, the described charging drain electrode of PMOS1 pipe is connected with voltage input end VIN, and the described electric discharge drain electrode of PMOS2 pipe is connected with voltage output end VOUT; Described charging PMOS1 pipe is connected with the drain electrode that the source electrode of PMOS2 pipe shares NMOS tube with described discharge and recharge respectively with electric discharge; The drain electrode that described discharge and recharge shares NMOS tube is also connected with external power source BATT by inductance L, sampling resistor RS and output capacitance C successively.
The beneficial effects of the utility model: compared with prior art: portable power source circuit of the present utility model can realize switching regulator charge function and the synchronous boost function of synchronous buck pattern; And in this circuit, decrease a power tube, reduce cost, improve operating efficiency.
Accompanying drawing explanation
Fig. 1 is circuit theory schematic diagram of the present utility model.
Fig. 2 is the embody rule schematic diagram of the utility model in portable power source module.
Fig. 3 be the utility model under pressure-increasning state, the grid voltage of charging PMOS and underlayer voltage control waveform figure.
Embodiment
Shown in Fig. 1, relate to a kind of portable power source circuit of new structure, comprise charging PMOS1 manage, discharge with PMOS2 pipe and discharge and recharge share NMOS tube; Wherein, the described charging drain electrode of PMOS1 pipe is connected with voltage input end VIN, and the described electric discharge drain electrode of PMOS2 pipe is connected with voltage output end VOUT; Described charging PMOS1 pipe is connected with the drain electrode that the source electrode of PMOS2 pipe shares NMOS tube with described discharge and recharge respectively with electric discharge; The drain electrode that described discharge and recharge shares NMOS tube is also connected with external power source BATT by inductance L, sampling resistor RS and output capacitance C successively.
Fig. 2 is the embody rule schematic diagram of the utility model in portable power source module; The utility model circuit is the V_CONTROL module in figure.When systems axiol-ogy is opened to charged state during input voltage, discharging is in normal off state with PMOS2 pipe, and system works is in the switching regulator charge mode of standard.For preventing electric discharge PMOS2 pipe from leaking electricity, in the charge state, gate voltage VG2 and the underlayer voltage VB2 of PMOS2 are chosen as VG2=VB2=VIN.
When system does not detect input voltage, system works is in discharge condition, and charge with the normal shutoff of PMOS1 pipe, system works is in the synchronous boost pattern of standard.Because discharge process induction charging, cause inductance end pulse voltage VSW>VOUT, charge and must to select between VSW and VOUT (the V_CONTROL module namely in Fig. 2) with the gate voltage VG1 of PMOS1 pipe and underlayer voltage VB1.
Fig. 3 be the utility model under pressure-increasning state, charge with the grid voltage of PMOS1 pipe and underlayer voltage control waveform figure.Known in figure, within the TON time of NMOS tube conducting, VG1=VB1=VOUT; Within the TOFF time that NMOS tube is closed, because VSW>VOUT, for preventing inductance to the electric leakage of VIN end, select VG1=VB1=VSW.
To sum up, according to the work schedule of standard charging and boosting, select suitable grid voltage and substrate level, effectively can control power tube, leak electricity to prevent unwanted power tube.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (1)
1. a portable power source circuit for new structure, is characterized in that, comprise charging PMOS1 manage, discharge with PMOS2 pipe and discharge and recharge share NMOS tube; Wherein, the described charging drain electrode of PMOS1 pipe is connected with voltage input end VIN, and the described electric discharge drain electrode of PMOS2 pipe is connected with voltage output end VOUT; Described charging PMOS1 pipe is connected with the drain electrode that the source electrode of PMOS2 pipe shares NMOS tube with described discharge and recharge respectively with electric discharge; The drain electrode that described discharge and recharge shares NMOS tube is also connected with external power source BATT by inductance L, sampling resistor RS and output capacitance C successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520997205.1U CN205178587U (en) | 2015-12-03 | 2015-12-03 | Novel portable power source circuit of structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520997205.1U CN205178587U (en) | 2015-12-03 | 2015-12-03 | Novel portable power source circuit of structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205178587U true CN205178587U (en) | 2016-04-20 |
Family
ID=55742522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520997205.1U Active CN205178587U (en) | 2015-12-03 | 2015-12-03 | Novel portable power source circuit of structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205178587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375575A (en) * | 2015-12-03 | 2016-03-02 | 无锡矽林威电子有限公司 | Portable power supply circuit with novel structure |
-
2015
- 2015-12-03 CN CN201520997205.1U patent/CN205178587U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375575A (en) * | 2015-12-03 | 2016-03-02 | 无锡矽林威电子有限公司 | Portable power supply circuit with novel structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103762702B (en) | Charging device of electronic appliances and power supply adaptor thereof | |
| CN203747451U (en) | Battery charging device | |
| CN104009633B (en) | A kind of electric current continuous high-gain DC-DC converter circuit | |
| CN103762691A (en) | Battery charging device and battery charging protection control method | |
| CN203747485U (en) | Electronic equipment charging device and power supply adapter thereof | |
| CN204131210U (en) | Power supply switch circuit and portable electric appts | |
| CN109742839A (en) | A kind of charging control circuit and system of bootstrap capacitor | |
| CN103064376B (en) | Centrally connected power supply rack-mount unit functional module hot plug-pull control system | |
| CN105006966A (en) | Switching power supply control chip and flyback AC-DC converter | |
| CN105939112A (en) | High-gain quasi-switch boost DC-DC converter | |
| CN105939107A (en) | Hybrid type quasi-switch voltage-boosting DC-DC converter | |
| CN205070828U (en) | AC -DC single -stage control chip and control system thereof | |
| CN201887660U (en) | LPC switch power supply circuit and air conditioner with same | |
| CN203552117U (en) | MPPT (maximum power point tracking) solar controller | |
| CN203747452U (en) | Battery charging device | |
| CN203722474U (en) | Quasi-Z-source DC-DC boost converter circuit | |
| CN205847086U (en) | A kind of switching capacity type high-gain quasi-Z source DC DC changer | |
| CN205847090U (en) | A kind of mixed type quasi-boost switching DC DC changer | |
| CN205178587U (en) | Novel portable power source circuit of structure | |
| CN204597781U (en) | Switching power supply circuit | |
| CN105978322A (en) | Switch capacitor type high-gain quasi Z source DC-DC converter | |
| CN105245120A (en) | AC-DC single-stage control chip and control system thereof | |
| CN207053403U (en) | The low-power dissipation high pressure power module of Geiger Miller detector | |
| CN203423622U (en) | Vehicle-mounted mobile phone wireless charger voltage-stabilized power supply | |
| CN204559393U (en) | A kind of Switching Power Supply control chip and inverse-excitation type AC-DC converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181205 Address after: Room A, Building 3, No. 103 Cailun Road, China (Shanghai) Free Trade Pilot Area, Pudong New Area, Shanghai 201210 Patentee after: SHANGHAI NATLINEAR ELECTRONICS CO., LTD. Address before: Block F, Information Industry Science Park, 21 Changjiang Road, Wuxi National High-tech Industrial Development Zone, Wuxi City, Jiangsu Province, 214000 Patentee before: WUXI XILINWEI ELECTRONICS CO., LTD. |