CN101577437B - Nokia charger circuit compatible with CDMA mobile phone and charging method - Google Patents
Nokia charger circuit compatible with CDMA mobile phone and charging method Download PDFInfo
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- CN101577437B CN101577437B CN2009100484583A CN200910048458A CN101577437B CN 101577437 B CN101577437 B CN 101577437B CN 2009100484583 A CN2009100484583 A CN 2009100484583A CN 200910048458 A CN200910048458 A CN 200910048458A CN 101577437 B CN101577437 B CN 101577437B
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Abstract
The invention discloses a Nokia charger circuit compatible with a CDMA mobile phone and a charging method. The circuit comprises a Nokia charger connector, a USB interface connector, a QSC chip, a triode Q1, a triode Q2, a triode Q3, a triode Q4, and a triode Q5. The charging method comprises the steps of: 1) producing charging interruption when the insertion of a charger exists; 2) detecting whether USB_OTG interruption exists, and if so, executing step 5), otherwise, executing step 3); 3) detecting whether CHGVAL interruption exists, and if so, executing step 6), otherwise, executing step 4); 4) detecting whether CBLPWR interruption exists, and if so, executing step 7), otherwise, executing exception processing; 5) executing the charging of a USB data wire; 6) executing the charging of a standard charger; and 7) executing the charging of a Nokia charger. The method can use the standard chargers, standard computer USB ports and the Nokia chargers to charge mobile phones, has convenient use, and avoids the waste of the chargers.
Description
Technical field
The present invention relates to CDMA charger for mobile phone circuit and charging method, particularly CDMA handset compatibility Nokia (NOKIA) charger circuit and charging method.
Background technology
Because Nokia charger exists multiple standards and multiple voltage value, indication Nokia charger of the present invention is the Nokia charger that is applicable to the regional standard.The Nokia charger of the type is extensive use of in China.
The QSC60x0 chip is the CDMA mobile phone single-chip series solution that QualCom company releases, and is integrated with radio frequency (RF) transceiver, base band management and power management etc.Hereinafter to be referred as the QSC chip.This single-chip series has three kinds of models such as QSC6010, QSC6020, QSC6030 respectively.This single-chip series comprises three kinds of start modes, i.e. KEY_POWER_ON, CHARGE_ON, CBL_PWR_ON.Wherein the start mode of CBL_PWR_ON is to realize by dragging down the CBL_PWR_N level.
Though the Nokia charger of the type has been extensive use of, it is also incompatible with QSC chip solution, and the Nokia charger of the type can't use in the CDMA of QSC chip mobile phone, causes the waste of charger.
Summary of the invention
The objective of the invention is to, a kind of CDMA handset compatibility Nokia charger circuit and charging method are provided, promptly can use standard charging device and computer standard USB port that mobile phone is charged, can use more common on the market Nokia charger that mobile phone is charged again.
The present invention adopts following technical scheme:
A kind of CDMA handset compatibility Nokia charger circuit comprises:
Be provided with the Nokia charger connector of anode connection terminal and negative pole link, usb interface connector, QSC chip, triode Q1, triode Q2, triode Q3, triode Q4, triode Q5;
The grid of described triode Q1, source electrode and drain electrode are connected with the emitter of the collector electrode of described triode Q3, described anode connection terminal, described triode Q4 respectively;
The base stage of described triode Q2, collector and emitter are connected with ground with the CBL_PWR_N pin of described anode connection terminal, described QSC chip respectively;
The base stage of described triode Q3, emitter respectively with the NCHG_ON pin (a certain general input/output interface of QSC chip is defined as NCHG_ON here) of described QSC chip, be connected;
The base stage of described triode Q4, collector electrode are connected with the CHG_CNT_N pin of described QSC chip, the source electrode of described triode Q5 respectively;
The grid of described triode Q5, drain electrode are connected with the BAT_FET_N pin of described QSC chip, the positive terminal of rechargeable battery respectively;
The VBUS link of described usb interface connector is connected with the VCHG pin of the emitter of described triode Q4, described QSC chip.
Further, be connected with resistance R 1 between the source electrode of described triode Q4 collector electrode and described triode Q5, the two ends of described resistance R 1 are connected with the analog to digital converter of described QSC chip internal.
Further, forward is connected with rectifier diode D1 between the emitter of described triode Q1 drain electrode and described triode Q4.
Further, described triode Q1 is the P channel MOS tube.
Further, described Nokia charger connector is different with described usb interface connector shape.
The present invention also provides a kind of charging method of CDMA handset compatibility Nokia charger circuit, may further comprise the steps:
1) when the insertion of charger, produces charging and interrupt;
2) detect whether the USB_OTG interruption is arranged, if, execution in step 5); If not, execution in step 3);
3) detect whether the CHGVAL interruption is arranged, if, execution in step 6); If not, execution in step 4);
4) detect whether the CBLPWR interruption is arranged, if, execution in step 7), if not, carry out and change abnormality processing;
5) carry out the charging of usb data line;
6) operative norm charger charging;
7) carry out the Nokia charger charging.
Further, when described step 7) is carried out the Nokia charger charging, close the interruption that the CBL_PWR_N incident produces, and shielding CHGVAL interrupts.
Further, when described step 5) is carried out the charging of usb data line, charging current is carried out current limliting, make charging current less than 500mA.
The present invention promptly can use standard charging device and computer standard USB port that mobile phone is charged, and can use more common on the market Nokia charger that mobile phone is charged again, and is user-friendly, avoids the waste of charger.
Further specify the present invention below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is a CDMA handset compatibility Nokia charger circuit embodiment circuit diagram of the present invention;
Fig. 2 is the charging method embodiment flow chart of CDMA handset compatibility Nokia charger of the present invention.
Embodiment
As shown in Figure 1, a kind of CDMA handset compatibility Nokia charger circuit comprises:
Be provided with the Nokia charger connector of anode connection terminal and negative pole link, be used to provide the interface that is connected with basic inferior charger; Usb interface connector, QSC chip, triode Q1, triode Q2, triode Q3, triode Q4, triode Q5;
The grid of described triode Q1, source electrode and drain electrode are connected with the emitter of the collector electrode of described triode Q3, described anode connection terminal, described triode Q4 respectively;
The base stage of described triode Q2, collector and emitter are connected with ground with the CBL_PWR_N pin of described anode connection terminal, described QSC chip respectively;
The base stage of described triode Q3, emitter respectively with the NCHG_ON pin (a certain general input/output interface of QSC chip is defined as NCHG_ON here) of described QSC chip, be connected;
The base stage of described triode Q4, collector electrode are connected with the CHG_CNT_N pin of described QSC chip, the source electrode of described triode Q5 respectively;
The grid of described triode Q5, drain electrode are connected with the BAT_FET_N pin of described QSC chip, the positive terminal of rechargeable battery respectively;
The VBUS link of described usb interface connector is connected with the VCHG pin of the emitter of described triode Q4, described QSC chip.
Wherein, be connected with resistance R 1 between the source electrode of described triode Q4 collector electrode and described triode Q5, the two ends of described resistance R 1 are connected with the analog to digital converter (ADC) of described QSC chip internal.
Wherein, forward is connected with rectifier diode D1 between the emitter of described triode Q1 drain electrode and described triode Q4.
Wherein, described triode Q1 is the P channel MOS tube.
Wherein, described Nokia charger connector is different with described usb interface connector shape.By structural difference, this makes standard charging device or usb data line to insert simultaneously with Nokia charger, standard charging and Nokia charger, and the judgement of usb data line and Nokia charger have been exempted, thereby reduced the difficulty of judging the charger kind, improved the feasibility and the stability of detection method.
CDMA handset compatibility Nokia charger circuit provided by the invention, because charge path has only one to be that charging voltage is passed through triode Q4, resistance R 1, triode Q5 arrives rechargeable battery then, therefore used different interrupt events to judge different charging modes, promptly by whether having USB_OTG interruption (interruption that D+ and D-short circuit trigger) to distinguish USB data wire or standard charging device, interrupt (the VCHG pin voltage is higher than the interruption that 3.1V triggers) and CBLPWR by CHGVAL and interrupt (interruption that the CBL_PWR_N pin level is triggered when being dragged down) and distinguish standard charging device and NOKIA charger respectively, compatibility the usb data line, the standard charging device, three kinds of charging modes of Nokia charger.Concrete operation principle is as follows:
1, standard charging device charging (YD/T 1591-2006 " mobile phone charger and interfacing require and method of testing ")
As shown in Figure 1, the VBUS of the positive source of standard charging device and USB line is a shared PIN pin, when using the standard charging device, charging voltage is delivered to the VCHG pin of triode Q4 and QSC chip, when the VCHG pin detected charging voltage and is higher than 3.1V, charging procedure can be opened and move to mobile phone, sends a high level by the CHG_CNT_N pin and make triode Q4 conducting, the voltage of charger just is added to battery by triode Q4, resistance R 1, triode Q5 like this, and battery is charged.Wherein resistance R 1 is one 0.1 Europe sample resistance, 1 liang of analog to digital converter (ADC) that terminates to the QSC chip internal of resistance R, the data that described QSC chip is gathered by ADC obtain the pressure drop at resistance R 1 two ends, just can learn the value of charging current again divided by the resistance of resistance R 1, the value of charging current is monitored.
2, usb data line charging
The method of the charging method of usb data line and standard charging device is basic identical, and its main distinction is generation and the processing that USB_OTG interrupts under two kinds of situations.Charger for mobile phone new standard according to China's Ministry of Information Industry's promulgation, the new standard charger adopts the standard USB socket, and with D+ and D-short circuit, this just makes two kinds of charging modes produce difference, use the standard charging device and interrupt because D+ and D-short circuit can't produce USB_OTG, the USB line then can normally produce USB_OTG and interrupt, and whether described QSC chip is exactly by having USB_OTG interruption generation to distinguish charging of usb data line or the charging of standard charging device.
Under above-mentioned any situation; move described QSC chip and can detect all in charging procedure whether USB_OTG interruption generation is arranged; because the USB mouth output current of PC (PC) is generally all at 500mA; and the charging current of standard charging device generally all can be higher than 500mA; for avoiding connecting the USB line when charging time; charging current is excessive to cause PC to protect or damage, and described QSC chip passes through the judgement to these two kinds charging types, and the charge-current limit of USB charge mode is carried out reasonable configuration.
3, Nokia charger charging
Triode Q1 among Fig. 1, Q2, Q3 and diode D1 have constituted the Nokia charger compatible circuit, when using Nokia charger that mobile phone is charged, the voltage of charger is added to triode Q1, the base stage that is added to triode Q2 simultaneously makes triode Q2 conducting, the triode Q2 of conducting drags down the CBL_PWR_N pin voltage, when CBL_PWR_N is dragged down, mobile phone is carried out the start operation, and produce a CBLPWR interrupt event, move described QSC chip after charging procedure detects this interruption, judge that Nokia charger inserts, by general input/output interface (GPIO, be defined as the NCHG_ON pin in the present embodiment) with triode Q3 conducting, thereby make triode Q1 conducting, the charging voltage of Nokia charger is transferred on the charging triode Q4, moves described QSC chip then in charging procedure, the charging flow of operative norm.
As shown in Figure 2, a kind of charging method of CDMA handset compatibility Nokia charger circuit may further comprise the steps:
1) when the insertion of charger, produces charging (charge) and interrupt;
2) detect whether the USB_OTG interruption is arranged, if, execution in step 5); If not, execution in step 3);
3) detect whether CHGVAL interruption (the VCHG pin voltage is higher than the interruption that 3.1V triggers) is arranged, if, execution in step 6); If not, execution in step 4);
4) detect whether CBLPWR interruption (interruption that the CBL_PWR_N pin level is triggered when being dragged down) is arranged, if, execution in step 7), if not, carry out and change abnormality processing;
5) be judged as the usb data line and insert, carry out the charging of usb data line, charging current is carried out current limliting, make charging current, the safety of the PC equipment such as (PC) of usb data line charging is provided with assurance less than 500mA;
6) be judged as the standard charging device and insert, the charging of operative norm charger;
7) be judged as Nokia charger and insert, carry out the Nokia charger charging.And closing the interruption that the CBL_PWR_N incident produces, shielding CHGVAL interrupts.
Above-described embodiment only is used to illustrate technological thought of the present invention and characteristics, its purpose makes those skilled in the art can understand content of the present invention and is implementing according to this, when can not only limiting claim of the present invention with present embodiment, be all equal variation or modifications of doing according to disclosed spirit, still drop in the claim of the present invention.
Claims (7)
1. CDMA handset compatibility Nokia charger circuit is characterized in that comprising:
Be provided with the Nokia charger connector of anode connection terminal and negative pole link, usb interface connector, QSC chip, triode Q1, triode Q2, triode Q3, triode Q4, triode Q5;
The grid of described triode Q1, source electrode and drain electrode are connected with the emitter of the collector electrode of described triode Q3, described anode connection terminal, described triode Q4 respectively;
The base stage of described triode Q2, collector and emitter are connected with ground with the CBL_PWR_N pin of described anode connection terminal, described QSC chip respectively;
The base stage of described triode Q3, emitter respectively with the NCHG_ON pin of described QSC chip, be connected; Wherein, the NCHG_ON pin of described QSC chip is a certain general input/output interface of QSC chip;
The base stage of described triode Q4, collector electrode are connected with the CHG_CNT_N pin of described QSC chip, the source electrode of described triode Q5 respectively;
The grid of described triode Q5, drain electrode are connected with the BAT_FET_N pin of described QSC chip, the positive terminal of rechargeable battery respectively;
The VBUS link of described usb interface connector is connected with the VCHG pin of the emitter of described triode Q4, described QSC chip.
2. CDMA handset compatibility Nokia charger circuit according to claim 1 is characterized in that:
Forward is connected with rectifier diode D1 between the emitter of described triode Q1 drain electrode and described triode Q4.
3. CDMA handset compatibility Nokia charger circuit according to claim 2 is characterized in that:
Described triode Q1 is the P channel MOS tube.
4. CDMA handset compatibility Nokia charger circuit according to claim 3 is characterized in that:
Described Nokia charger connector is different with described usb interface connector shape.
5. the charging method of a CDMA handset compatibility Nokia charger circuit adopts the described CDMA handset compatibility of arbitrary claim Nokia charger circuit in the claim 1 to 4, it is characterized in that may further comprise the steps:
1) when the insertion of charger, produces charging and interrupt;
2) detect whether the USB_OTG interruption is arranged, if, execution in step 5); If not, execution in step 3); Wherein, described USB_OTG interrupts being meant the D+ of usb interface connector and the interruption that the D-short circuit triggers;
3) detect whether the CHGVAL interruption is arranged, if, execution in step 6); If not, execution in step 4); Wherein, described CHGVAL interrupts being meant that the VCHG pin voltage of QSC chip is higher than the interruption that 3.1V triggers;
4) detect whether the CBLPWR interruption is arranged, if, execution in step 7); If not, carry out the commentaries on classics abnormality processing; Wherein, described CBLPWR interruption is meant the interruption that the CBL_PWR_N pin level of QSC chip is triggered when being dragged down;
5) carry out the charging of usb data line, charging finishes;
6) operative norm charger charging, charging finishes;
7) carry out the Nokia charger charging, charging finishes.
6. the charging method of CDMA handset compatibility Nokia charger circuit according to claim 5 is characterized in that:
When described step 7) is carried out the Nokia charger charging, close CBLPWR and interrupt, and shielding CHGVAL interrupts.
7. the charging method of CDMA handset compatibility Nokia charger circuit according to claim 6 is characterized in that: when described step 5) is carried out the charging of usb data line, charging current is carried out current limliting, make charging current less than 500mA.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100484583A CN101577437B (en) | 2009-03-27 | 2009-03-27 | Nokia charger circuit compatible with CDMA mobile phone and charging method |
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| CN2009100484583A CN101577437B (en) | 2009-03-27 | 2009-03-27 | Nokia charger circuit compatible with CDMA mobile phone and charging method |
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| CN101577437B true CN101577437B (en) | 2011-11-16 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104158267A (en) * | 2014-09-01 | 2014-11-19 | 青岛海信移动通信技术股份有限公司 | Charging method and device for battery |
| WO2016045093A1 (en) * | 2014-09-26 | 2016-03-31 | 华为技术有限公司 | Wireless internet access terminal, current limiting control apparatus and current limiting control method |
| CN104701933B (en) * | 2015-02-09 | 2017-05-17 | 深圳市冠旭电子股份有限公司 | OTG selective charging circuit and portable loudspeaker box |
| CN106356934B (en) * | 2016-09-26 | 2019-03-19 | 努比亚技术有限公司 | A kind of charge control method and mobile terminal |
| CN110544963B (en) * | 2018-05-29 | 2021-05-04 | 青岛海信移动通信技术股份有限公司 | Electronic equipment switching circuit |
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| CN201075714Y (en) * | 2007-07-13 | 2008-06-18 | 张恺龙 | Multifunctional USB charger |
| CN101335535A (en) * | 2008-08-05 | 2008-12-31 | 中兴通讯股份有限公司 | Multifunctional interface circuit, mobile terminal, multifunctional interface implementing method |
| CN201414009Y (en) * | 2009-03-27 | 2010-02-24 | 上海华勤通讯技术有限公司 | CDMA mobile phone compatible Nokia charger circuit |
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- 2009-03-27 CN CN2009100484583A patent/CN101577437B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075714Y (en) * | 2007-07-13 | 2008-06-18 | 张恺龙 | Multifunctional USB charger |
| CN101335535A (en) * | 2008-08-05 | 2008-12-31 | 中兴通讯股份有限公司 | Multifunctional interface circuit, mobile terminal, multifunctional interface implementing method |
| CN201414009Y (en) * | 2009-03-27 | 2010-02-24 | 上海华勤通讯技术有限公司 | CDMA mobile phone compatible Nokia charger circuit |
Non-Patent Citations (1)
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| JP特开2008-27147A 2008.02.07 |
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