CN2862489Y - Electric power management circuit for hand-held equipment - Google Patents
Electric power management circuit for hand-held equipment Download PDFInfo
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- CN2862489Y CN2862489Y CN 200520037199 CN200520037199U CN2862489Y CN 2862489 Y CN2862489 Y CN 2862489Y CN 200520037199 CN200520037199 CN 200520037199 CN 200520037199 U CN200520037199 U CN 200520037199U CN 2862489 Y CN2862489 Y CN 2862489Y
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Abstract
A power source management circuit for handheld equipment includes voltage lifter IC8, voltage converter AIC3, voltage converter BIC4, voltage converter CIC9, and voltage converter DIC10; the circuit can raise the level of parallel connection for two sets of AA aneroid battery or two sets of rechargeable nickel-hydrogen battery from 2V-3V to stable 3.5V output as power supply input of the handheld device, and then convert via each power management chip the 3.5V to 1.8V, 3.0V, 3.3V for stable and reliable output. The circuit is simple in structure, low in cost and has a very extensive market outlook in terms of application in various electronic equipment.
Description
Technical field
The utility model belongs to the EDP technology field, particularly a kind of handheld device electric power management circuit.
Background technology
At present, various portable hand-held data collection stations are very universal.It is by hardware technology, software engineering and the combination of the two, realized bar code scan, decoding and and computer between data communication, two kinds of technology that seem wide of the mark are all merged, simplified the process that data are imported greatly.
In real work, handheld terminal is to use the person to carry work more, such as various application such as storehouse management, express delivery, harbour, libraries.General by storage battery power supply, rather than, be fixed on a place by the civil power continued power as large household electrical appliances such as television set, refrigerators, this has just proposed high requirement to the electric power management circuit of handheld terminal.
Because even if just be full of the storage battery of electricity, after use a period of time, the actual level of battery just can not satisfy the operation level requirement of some chips in the equipment.
In addition, the electric weight of battery is limited eventually, and this is the tap/dip deep into powered battery potentiality to how just, and the power-on time that prolongs battery is had higher requirement.
Summary of the invention
The purpose of this utility model provides a kind of handheld device electric power management circuit, thereby handheld device obtains stable, lasting supply of electrical energy.
The utility model comprises voltage lifting mechanism, electric pressure converter A, electric pressure converter B, electric pressure converter C, electric pressure converter D; The Vbatt pin of voltage lifting mechanism connects positive source, and GND is connected power cathode promptly logically with the PGND pin; The VOUT pin connects the IN pin of electric pressure converter A, electric pressure converter B, electric pressure converter C, electric pressure converter D respectively, the GND pin of electric pressure converter A, electric pressure converter B, electric pressure converter C, electric pressure converter D all connects logically, after the OUT pin passes through filter circuit filtering respectively, output rated voltage.
In the utility model, after the Vbatt pin of described voltage lifting mechanism connects the SHDN pin, connect inductance L 1 again, resistance R 40, one end of resistance R 42 and diode D13 negative pole, capacitor C 32 positive poles and positive source, the other end of inductance L 1 connects the LX pin of voltage lifting mechanism, capacitor C 32 negative poles connect logically, the other end of resistance R 40 connects logically by resistance R 47 and the capacitor C 13 that is connected in parallel, the other end of resistance R 42 connects the LBI pin of voltage lifting mechanism and connects logically by resistance R 49, the Rlim pin of voltage lifting mechanism connects logically by resistance R 50, the LBON pin connects the VOUT pin by resistance R 43, this pin also connects the positive pole of capacitor C 33 and diode D9, capacitor C 9, one end of resistance R 44 and the IN pin of electric pressure converter A, the other end of the negative pole of capacitor C 33 and capacitor C 9 is connected GND pin and the PGND pin of voltage lifting mechanism IC8 and connects logically, the other end of resistance R 44 connects the FB pin of voltage lifting mechanism IC8 and connects logically by resistance R 46, the negative pole of diode D9 connects the positive pole of capacitor C 54, the end of resistance R 41 and socket BT2, another termination of the negative pole of capacitor C 54 and socket BT2 logically, resistance R 41 connects logically by resistance R 48 and the capacitor C 14 that is connected in parallel.
In the utility model, the IN pin of described electric pressure converter A connects the SN pin by resistance R 15, the IN pin that also connects electric pressure converter C simultaneously, the GND pin connects logically, the ENR pin connects the negative pole of diode D10 and diode D11 and an end of resistance R 9, the positive pole of diode D10 connects an end of switch SW 2, and connect the base stage of triode Q5 by resistance R 45, the emitter of triode Q5 connects logically, collector electrode connects working power by resistance R 8, the other end of switch SW 2 connects the IN pin of electric pressure converter A, the positive pole of diode D11 is drawn the PON end, the OUT pin of electric pressure converter A connects the positive pole of capacitor C 35 and an end of capacitor C 11, also connects the ENR pin of electric pressure converter C and electric pressure converter D, and connects logically by capacitor C 10.
In the utility model, the IN pin of described electric pressure converter B connects the SN pin by resistance R 17, the IN pin that also connects electric pressure converter C simultaneously, the GND pin connects logically, the ENR pin connects logically by resistance R 10, the OUT pin of electric pressure converter B connects the positive pole of capacitor C 37 and an end of capacitor C 15, and another termination of the negative pole of capacitor C 37 and capacitor C 15 logically.
In the utility model, the IN pin of described electric pressure converter C connects the SN pin by resistance R 16, and connect logically by capacitor C 63, the IN pin that also connects electric pressure converter D simultaneously, the GND pin connects logically, the ENR pin connects logically by capacitor C 10, and the OUT pin of electric pressure converter C connects the positive pole of capacitor C 36 and an end of capacitor C 12, and another termination of the negative pole of capacitor C 36 and capacitor C 12 logically.
In the utility model, the IN pin of described electric pressure converter D connects the SN pin by resistance R 18, the IN pin that also connects electric pressure converter C simultaneously, the GND pin connects logically, the ENR pin connects logically by capacitor C 10, the OUT pin of electric pressure converter D connects the positive pole of capacitor C 38 and an end of capacitor C 16 and capacitor C 29, and another termination of the negative pole of capacitor C 38 and capacitor C 16 and capacitor C 29 logically.
The utility model can rise to stable 3.5V output from 2V～3V with the series connection level of two joint AA dry cells or two joint rechargeable nickel-hydrogen batteries, as the power supply input of handheld device.Again by each power management chip with 3.5V be converted to 1.8V, 3.0V respectively, 3.3V reliablely and stablely exports.This circuit structure is simple, cost is low, and the market prospects of using in various electronic equipments are boundless.
Description of drawings
Accompanying drawing 1 is the circuit theory diagrams of the utility model embodiment
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is specifically described:
With reference to the accompanying drawings 1, the utility model embodiment comprises voltage lifting mechanism IC8, electric pressure converter AIC3, electric pressure converter B IC4, electric pressure converter C IC9, electric pressure converter D IC10; The Vbatt pin of voltage lifting mechanism IC8 connects positive source, and GND is connected power cathode promptly logically with the PGND pin; The VOUT pin connects the IN pin of electric pressure converter AIC3, electric pressure converter B IC4, electric pressure converter C IC9, electric pressure converter D IC10 respectively, the GND pin of electric pressure converter AIC3, electric pressure converter B IC4, electric pressure converter C IC9, electric pressure converter D IC10 all connects logically, after the OUT pin passes through filter circuit filtering respectively, output rated voltage.
After the Vbatt pin of described voltage lifting mechanism IC8 connects the SHDN pin, connect inductance L 1 again, resistance R 40, one end of resistance R 42 and diode D13 negative pole, capacitor C 32 positive poles and positive source, the other end of inductance L 1 connects the LX pin of voltage lifting mechanism IC8, capacitor C 32 negative poles connect logically, the other end of resistance R 40 connects logically by resistance R 47 and the capacitor C 13 that is connected in parallel, the other end of resistance R 42 connects the LBI pin of voltage lifting mechanism IC8 and connects logically by resistance R 49, the Rlim pin of voltage lifting mechanism IC8 connects logically by resistance R 50, the LBON pin connects the VOUT pin by resistance R 43, this pin also connects the positive pole of capacitor C 33 and diode D9, capacitor C 9, one end of resistance R 44 and the IN pin of electric pressure converter AIC3, the other end of the negative pole of capacitor C 33 and capacitor C 9 is connected GND pin and the PGND pin of voltage lifting mechanism IC8 and connects logically, the other end of resistance R 44 connects the FB pin of voltage lifting mechanism IC8 and connects logically by resistance R 46, the negative pole of diode D9 connects the positive pole of capacitor C 54, the end of resistance R 41 and socket BT2, another termination of the negative pole of capacitor C 54 and socket BT2 logically, resistance R 41 connects logically by resistance R 48 and the capacitor C 14 that is connected in parallel.
The IN pin of described electric pressure converter A IC3 connects the SN pin by resistance R 15, the IN pin that also connects electric pressure converter C IC9 simultaneously, the GND pin connects logically, the ENR pin connects the negative pole of diode D10 and diode D11 and an end of resistance R 9, the positive pole of diode D10 connects an end of switch SW 2, and connect the base stage of triode Q5 by resistance R 45, the emitter of triode Q5 connects logically, collector electrode connects working power by resistance R 8, the other end of switch SW 2 connects the IN pin of electric pressure converter A IC3, the positive pole of diode D11 is drawn the PON end, the OUT pin of electric pressure converter A IC3 connects the positive pole of capacitor C 35 and an end of capacitor C 11, the ENR pin that also connects electric pressure converter C IC9 and electric pressure converter D IC10, and connect logically by capacitor C 10.
The IN pin of described electric pressure converter B IC4 connects the SN pin by resistance R 17, the IN pin that also connects electric pressure converter C IC9 simultaneously, the GND pin connects logically, the ENR pin connects logically by resistance R 10, the OUT pin of electric pressure converter B IC4 connects the positive pole of capacitor C 37 and an end of capacitor C 15, and another termination of the negative pole of capacitor C 37 and capacitor C 15 logically.
The IN pin of described electric pressure converter C IC9 connects the SN pin by resistance R 16, and connect logically by capacitor C 63, the IN pin that also connects electric pressure converter D IC10 simultaneously, the GND pin connects logically, the ENR pin connects logically by capacitor C 10, the OUT pin of electric pressure converter C IC9 connects the positive pole of capacitor C 36 and an end of capacitor C 12, and another termination of the negative pole of capacitor C 36 and capacitor C 12 logically.
The IN pin of described electric pressure converter D IC10 connects the SN pin by resistance R 18, the IN pin that also connects electric pressure converter C IC9 simultaneously, the GND pin connects logically, the ENR pin connects logically by capacitor C 10, the OUT pin of electric pressure converter D IC10 connects the positive pole of capacitor C 38 and an end of capacitor C 16 and capacitor C 29, and another termination of the negative pole of capacitor C 38 and capacitor C 16 and capacitor C 29 logically.
In the utility model embodiment, the electric power system of handheld device is divided into main battery and two power supply sources of reserve battery.Main battery is responsible for the power supply of whole system and to standby lithium coin cells powered operation; Standby lithium coin cells is responsible for the running powered operation of handheld device clock.Even if when changing main battery like this, clock also can accurately move.
It is 3.5V that the voltage lifting mechanism IC8 of the utility model embodiment adopts SP6648 that the battery input is promoted, electric pressure converter C IC9 adopts SP6201-1.8V to transfer level to 1.8V output then, electric pressure converter D IC10 adopts SP6201-3.0V to transfer 3.0V output to, and electric pressure converter AIC3 and electric pressure converter B IC4 adopt SP6201-3.3V to transfer 3.3V output to respectively.
The utility model embodiment charges for standby chargeable lithium cell by low pressure reduction diode D9RB161.Can monitor the main battery actual level by software by AIN1; By AIN2 can the standby lithium battery of software detection the actual level value.Control the work and the shutoff operation of system of handheld device major software by PON and POFF.Connect handheld device CPU pin by LBON, end voltage detection signal is provided.
Claims (6)
1. a handheld device electric power management circuit is characterized in that: comprise voltage lifting mechanism (IC8), electric pressure converter A (IC3), electric pressure converter B (IC4), electric pressure converter C (IC9), electric pressure converter D (IC10); The Vbatt pin of voltage lifting mechanism (IC8) connects positive source, and GND is connected power cathode promptly logically with the PGND pin; The VOUT pin connects the IN pin of electric pressure converter A (IC3), electric pressure converter B (IC4), electric pressure converter C (IC9), electric pressure converter D (IC10) respectively, the GND pin of electric pressure converter A (IC3), electric pressure converter B (IC4), electric pressure converter C (IC9), electric pressure converter D (IC10) all connects logically, after the OUT pin passes through filter circuit filtering respectively, output rated voltage.
2. a kind of handheld device electric power management circuit according to claim 1, it is characterized in that: after the Vbatt pin of described voltage lifting mechanism (IC8) connects the SHDN pin, connect inductance (L1) again, resistance (R40), one end of resistance (R42) and diode (D13) negative pole, electric capacity (C32) positive pole and positive source, the other end of inductance (L1) connects the LX pin of voltage lifting mechanism (IC8), electric capacity (C32) negative pole connects logically, the other end of resistance (R40) connects logically by resistance (R47) and the electric capacity (C13) that is connected in parallel, the other end of resistance (R42) connects the LBI pin of voltage lifting mechanism (IC8) and connects logically by resistance (R49), the Rlim pin of voltage lifting mechanism (IC8) connects logically by resistance (R50), the LBON pin connects the VOUT pin by resistance (R43), this pin also connects the positive pole of electric capacity (C33) and diode (D9), electric capacity (C9), the IN pin of one end of resistance (R44) and electric pressure converter A (IC3), the other end of the negative pole of electric capacity (C33) and electric capacity (C9) is connected the GND pin and the PGND pin of voltage lifting mechanism (IC8) and connects logically, the other end of resistance (R44) connects the FB pin of voltage lifting mechanism (IC8) and connects logically by resistance (R46), the negative pole of diode (D9) connects the positive pole of electric capacity (C54), one end of resistance (R41) and socket (BT2), another termination of the negative pole of electric capacity (C54) and socket (BT2) logically, resistance (R41) connects logically by resistance (R48) and the electric capacity (C14) that is connected in parallel.
3. a kind of handheld device electric power management circuit according to claim 1, it is characterized in that: the IN pin of described electric pressure converter A (IC3) connects the SN pin by resistance (R15), the IN pin that also connects electric pressure converter C (IC9) simultaneously, the GND pin connects logically, the ENR pin connects the negative pole of diode (D10) and diode (D11) and an end of resistance (R9), the positive pole of diode (D10) connects an end of switch (SW2), and connect the base stage of triode (Q5) by resistance (R45), the emitter of triode (Q5) connects logically, collector electrode connects working power by resistance (R8), the other end of switch (SW2) connects the IN pin of electric pressure converter A (IC3), the positive pole of diode (D11) is drawn the PON end, the OUT pin of electric pressure converter A (IC3) connects the positive pole of electric capacity (C35) and an end of electric capacity (C11), the ENR pin that also connects electric pressure converter C (IC9) and electric pressure converter D (IC10), and connect logically by electric capacity (C10).
4. a kind of handheld device electric power management circuit according to claim 1, it is characterized in that: the IN pin of described electric pressure converter B (IC4) connects the SN pin by resistance (R17), the IN pin that also connects electric pressure converter C (IC9) simultaneously, the GND pin connects logically, the ENR pin connects logically by resistance (R10), the OUT pin of electric pressure converter B (IC4) connects the positive pole of electric capacity (C37) and an end of electric capacity (C15), and another termination of the negative pole of electric capacity (C37) and electric capacity (C15) logically.
5. a kind of handheld device electric power management circuit according to claim 1, it is characterized in that: the IN pin of described electric pressure converter C (IC9) connects the SN pin by resistance (R16), and connect logically by electric capacity (C63), the IN pin that also connects electric pressure converter D (IC10) simultaneously, the GND pin connects logically, the ENR pin connects logically by electric capacity (C10), the OUT pin of electric pressure converter C (IC9) connects the positive pole of electric capacity (C36) and an end of electric capacity (C12), and another termination of the negative pole of electric capacity (C36) and electric capacity (C12) logically.
6. a kind of handheld device electric power management circuit according to claim 1, it is characterized in that: the IN pin of described electric pressure converter D (IC10) connects the SN pin by resistance (R18), the IN pin that also connects electric pressure converter C (IC9) simultaneously, the GND pin connects logically, the ENR pin connects logically by electric capacity (C10), the OUT pin of electric pressure converter D (IC10) connects the positive pole of electric capacity (C38) and an end of electric capacity (C16) and electric capacity (C29), and another termination of the negative pole of electric capacity (C38) and electric capacity (C16) and electric capacity (C29) logically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520037199 CN2862489Y (en) | 2005-12-16 | 2005-12-16 | Electric power management circuit for hand-held equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520037199 CN2862489Y (en) | 2005-12-16 | 2005-12-16 | Electric power management circuit for hand-held equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2862489Y true CN2862489Y (en) | 2007-01-24 |
Family
ID=37660118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520037199 Expired - Fee Related CN2862489Y (en) | 2005-12-16 | 2005-12-16 | Electric power management circuit for hand-held equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2862489Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009097769A1 (en) * | 2008-01-31 | 2009-08-13 | Shenzhen Huawei Communication Technologies Co., Ltd. | Power supply management method, device and terminal |
-
2005
- 2005-12-16 CN CN 200520037199 patent/CN2862489Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009097769A1 (en) * | 2008-01-31 | 2009-08-13 | Shenzhen Huawei Communication Technologies Co., Ltd. | Power supply management method, device and terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: QINGDAO HAIER SOFTWARE CO., LTD. Free format text: FORMER NAME OR ADDRESS: QINGDAO HAIER QINGDA SOFTWARE CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 266101 Central Research Institute, Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao 201 Patentee after: Haiersoft Corporation Address before: 266101 Central Research Institute, Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao 201 Patentee before: Qingdao Software Co., Ltd., Qingdao Haier |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070124 Termination date: 20141216 |
|
| EXPY | Termination of patent right or utility model |