Shandisa iri nyore IC kuwedzera hupenyu hwebhatiri refoni yako

Auctor Iflowpower - Dostawca przenośnych stacji zasilania

Deredza mashandisiro emagetsi efoni uye kuwedzera hupenyu hwayo hwebhatiri ndicho chinangwa cheinjiniya yega yega mbozhanhare. Madhizaini mainjiniya anogara achiwedzera MP3 vatambi, makamera, uye yakazara mota mavhidhiyo senge mbozha mbozha dzemazuvano, izvo zvinoramba zvichideredza kushandiswa kwemagetsi. Deredza magetsi emagetsi enharembozha yakakosha chip (yakadai seanalog baseband chip uye digital baseband chip) - inogona kunge iri 2.

8V kana kunyange 1.8V - nzira yekudzikisa simba rekushandisa. Asi kana injinjiniya yedhizaini ichifanirwa kuchengetedza imwe kana anopfuura machipisi ekutsigira ane high supply voltages, pane dambudziko.

Chinonyanya kuzivikanwa ndechekuti basa rekuwedzera remafoni richave rakakwirira. Mumwe wemienzaniso ndeye tambo yekurira, sezvo iyoodhiyo chiratidzo chepamusoro renji ingangoita 3.2V, saka dunhu rinoitika uye rinotumira idzi ringtone rinowanzo 4.

2V simba rekupa magetsi. Nenzira iyi, matambudziko anoitika painterface pakati pebaseband uye ringtone maseketi. Kuenzanisira dambudziko iri, isu tinofanirwa kushandisa analog switch kushandura izwi kana ringtone kumutauri semuenzaniso.

Kuti ushandure aya marudzi maviri emaseketi pane imwechete block (PCB), simba rekushandisa rinoshandiswa, kana yakaderera voltage digital logic drive analog switch mu baseband chip inoshandiswa. Nekudaro, zvinofanirwa kucherechedzwa kuti iyo yekupedzisira nzira inogona kurasikirwa nekushandiswa kwesimba kunowanikwa kubva kune baseband chip kudzikisa magetsi emagetsi, nekuti kana analog switch iri kushanda mune isiri-yakanaka mode, pachava nekuwanda kweperfusion ikozvino. Imwe nzira iri nyore yekugadzirisa dambudziko iri ndeye kushandura iyo dhijitari logic kubva pabaseband chip kuchengetedza baseband chip kuchengetedza simba uchishandisa 1.

8V voltage, asi nzira iyi inofanirwa kuve yakakwira voltage mutyairi anofanira kushanda nepamusoro voltage. Chero chip mufoni yako. Kuti tiwedzere kutsanangura nzira iyi, nzira yekuisa iyo inoshandura, ngationei kuti ikozvino irikuyerera kupi.

Sezvinoratidzwa mumufananidzo 1, iyo yedhijitari yekuisa yeanalog switch ndeye yakakosha CMOS buffer inosanganisira PMOS neNMOS transistors yakabatana kune inverter. Wedzera chiratidzo kune I / P pini yekupinda yebuffer. Kana iyo voltage yekupinda yakakwira kupfuura iyo yakakwira voltage (VIH), iyo inobuda voltage yebhafa iVDD (simba rekupa simba), kana iyo yekupinza voltage iri pazasi peiyo yakaderera voltage (VIL), inobuda voltage yebuffer iGND (pasi).

Izvi zvinovimbisa kuti gedhi regedhi reiyo analog switch imhepo yemagetsi sosi, nekudaro ichiita chiratidzo chayo. Kutariswa panguva imwe chete kweiyo IV hunhu curve inoratidzwa muMufananidzo 2 uchitarisa magetsi ekuisa kubva pa0 kuenda kuVDD scanning yekupinza voltage. Kana iyo voltage yekupinda iri chero yekupedzisira voltage yemagetsi emagetsi, IDD inodonha kusvika padiki (0μA).

Nekudaro, kana magetsi ekuisa ari padyo nenzvimbo yekusvetuka yebuffer, iyo IDD yakawedzera zvakanyanya. Naizvozvo, kana iyo dhijitari yekupinda voltage yakaiswa kune I / P yekupedzisira iri voltage yemagetsi sosi, iyo analog switch inoshandisa shoma simba rekushandisa. Iyo hunhu curve ine hunhu curve nekuda kweNMOS uye PMOS switch machubhu anoshandiswa mubuffer dhizaini, chaizvo se voltage control resistor.

Mamiriro emachipisi aya ndeaya anotevera: VGS> VT-> Transistor Tube Tutor Iyo VGS transistor inodzimwa kuti iite chikumbaridzo voltage, uye chiteshi chinotungamira chinoumbwa pakati pechitubu uye dhiraini kana voltage yakakwira kupfuura voltage. NMOS transistor Vt iri 0.9V, PMOS transistor Vt iri -0.

9V. Naizvozvo, kana magetsi ekuisa ari 0V, iyo PMOS (M1) iri muhurumende, uye kubuda kwechikamu chekutanga iVDD. Muchikamu chechipiri, iyo NMOS (M5) mudziyo uri mune iyo buffer ine yakazara kubuda kwe0V.

Iyo buffer yekupinda voltage inowedzera (isati yasvika iyo yakanyanya ikozvino) yakakonzera iyo impedance yeM1 (M1 kutanga kudzima) uye m5 yekudzikira kweimpedance (M5 yakatanga kubatika), ipapo tichaona VDD neGND. Hyper-impedance channel yakagadzirwa. Kuwedzera kuwedzera magetsi ekuisa kunokonzeresa imwe chete transistor mune yekupinza uye inobuda transistor pairs ye buffer.

Isu tinoshandisa misimboti iri pamusoro kuti tienderere mberi nekuongorora analog switch zviitiko, funga kushandisa Adi&39;s ADG884 analogi switch kuchinja pakati penharembozha kutenderera mhete uye kutaura. Kudzora chiratidzo kubva kudhijitari baseband chip ndeye 1.8V.

Sezvinoratidzwa muFIG. 2, kana shanduko yakafananidzwa ichityairwa zvakananga nedhijitari ye1.8V, magetsi ekupa ikozvino anofanira kunge ari 120μA.

Kana iyo dhijitari yekupinda voltage yeanalog switch yakakwira kupfuura 3.8V, ipapo mashandisirwo emagetsi anofanira kunge ari 0. Naizvozvo, kuitira kuti analog switch ishande panzvimbo yakaderera yemagetsi, chiratidzo chedhijitari chedhijitari baseband chip ndechekushandura kune yakakwira voltage.

Adi&39;s SC70 yekupedzisira-diki pasuru uye kazhinji inongoshandisa chete 0.1μA yazvino, seyero inoshandura yakakodzera chaizvo basa iri. Sezvinoratidzwa muFIG.

3, inogona kubatana nemagetsi emagetsi eiyo baseband chip uye magetsi emagetsi eiyo analog switch uye shandura iyo logic level pakati pemachipi maviri. Ehe, iyo analog switch mumuenzaniso wepamusoro inogona kuve chero chip inoshanda kune yakakwira voltages. Nharembozha dzemazuva ano dzinosanganisira akawanda CMOS akabatanidzwa maseketi (ICs) kuti apedze mabasa akasiyana, akadai seaudio uye vhidhiyo nemakamera edhijitari.

Aya maIC anowanzo shanda pasi pepi neipi pakati pe5V kusvika 1.8V, dzimwe nguva kunyange yakaderera magetsi emagetsi. Muchidimbu, tinoshandisa mazinga esimba rekuchengetedza simba kuwedzera hupenyu hwebhatiri.

Zvinhu zvinotevera zvinofanirwa kutariswa: nharembozha dzakaderera dzinowanzo shandisa 600mAh kugona bhatiri. Iyo bhatiri yekumira nguva yeyakaderera-yekupedzisira runhare i300 maawa (HR), uye yayo yezita ikozvino 2mA. Kana shanduko yemazinga ikasaitwa, iyo analog switch inoshandiswa mumuenzaniso uyu inotora ikozvino ye4.

8%, asi kana chete iyo yepamusoro nhanho ichishandurwa, chete 0.04% ikozvino inobatwa.