Ensigo z’Obukuumi Ziruwa?

Protection circuits ze nkola z’obukuumi ez’ebyuma ezizuula n’okusalako embeera z’amasannyalaze ezitali za bulijjo nga overcurrent, overvoltage, oba short circuits okuziyiza okwonooneka kw’ebyuma ne bbaatule. Circuit zino zikola nga abakuumi abagezi, nga zilondoola obutasalako emitendera gya voltage ne current era nga zikutula amaanyi nga parameters zisukka safe thresholds.

Lwaki Protection Circuits Zikulu nnyo mu byuma eby’omulembe

Buli kyuma kya kompyuta kyolekedde okutiisibwatiisibwa kw’amasannyalaze nga kikola. Amasannyalaze agava mu kukuba kw’omulabe gasobola okufuyira enkumi n’enkumi za vvuloti mu nkola mu microseconds. Battery okucaajinga ennyo kiyinza okuvaako thermal runaway ekivaako omuliro. Omukago gumu ogwa polarity ogukyusiddwa gusobola okusaanyaawo ebitundu ebiwulikika amangu ago.

Akatale k’okukuuma circuit kaatuuka ku buwumbi bwa ddoola 57.10 mu 2024 era kasuubirwa okutuuka ku buwumbi bwa ddoola 94.84 mu mwaka gwa 2033, nga kino kivudde ku mmotoka ez’amasannyalaze, ebyuma bya IoT, n’ebyuma ebikozesebwa abantu okweyongera. Okukula kuno kulaga obuzibu obweyongera obw’enkola z’amasannyalaze nga okulemererwa okumu kukulukuta okuyita mu bitundu ebiyungiddwa.

Enkulungo z’obukuumi zikola ku buzibu buno nga ziyita mu nkola ssatu enkulu: okuzuula, okusalawo, n’okukutula. Voltage monitoring integrated circuits buli kiseera sampula parameters z’amasannyalaze mu microsecond intervals. Okusoma bwe kumenya ekkomo eryategekebwa edda, enzikiriziganya y’okufuga ekola MOSFETs oba relays okusalako ekkubo lya circuit nga tekunnabaawo kwonooneka.

Ebika bya Circuit eby’Obukuumi Ebikulu

Enkola z’obukuumi zaawukana mu nkola ezesigamiziddwa ku vvulovumenti-ne ezisinziira ku kasasiro-, nga buli emu etunuulidde engeri ez’enjawulo ez’okulemererwa.

Circuits ezikuuma vvulovumenti esukkiridde

Embeera za vvulovumenti ezisukkiridde zibaawo nga vvulovumenti y’okugabira esukka ekipimo ekisinga obunene eky’ebitundu ebiri wansi. Microcontroller ya 5V ekwatibwa 12V efuna okumenya amangu gate oxide mu transistors zaayo.

Circuits za Crowbar (Enkulungo za Crowbar).

Circuit ya crowbar ekozesa Silicon-Controlled Rectifier (SCR) egattibwa ne Zener diode okukola short circuit efugibwa mu biseera by’ebintu ebisukkiridde. Wansi w’enkola eya bulijjo, Zener esigala nga edda emabega-esosola era nga te-etambuza. Voltage eyingizibwa bw’etuuka ku Zener breakdown threshold-kitera okuteekebwa 15-20% waggulu wa nominal-etambuza era n’ekola ekikomera kya SCR. Olwo SCR n’efunza eggaali y’omukka y’amasannyalaze okutuuka ku ttaka, n’ewaliriza fiyuzi ey’okungulu okufuuwa n’okuggyako ensobi enkalakkalira.

Enkola eno ey’obukuumi eraga nti ekola bulungi naye ng’ezikiriza. Bw’emala okukola, fiyuzi yeetaaga okukyusibwa nga tennazzaawo nkola. SCR ne Zener zirina okugumira amasannyalaze agakulukuta aga amps 10-50 okutuusa nga fiyuzi egguddewo, nga kyetaagisa okulonda ebitundu ebinywevu.

Ebintu ebiziyiza vvulovumenti ey’ekiseera (TVS) .

TVS diodes zikuuma okuva ku voltage spikes eziwangaala nanoseconds okutuuka ku milliseconds. Ebyuma bino eby’embeera enkalu-bikola nga Zener diodes ezikola amangu-nga zirina ebitundu by’okuyunga ebinene ennyo. TVS eya bulijjo ekwata ku vvulovumenti yaayo eya mirundi 1.5 era esobola okunyiga amasannyalaze ag’oku ntikko aga amps 50-200 okumala microseconds.

Ekitongole ky’emmotoka kikozesa nnyo obukuumi bwa TVS olw’ebiragiro eby’amaanyi ebya ISO 16750-2 eby’ekiseera. Ebintu ebibaawo mu kusuula omugugu-nga alternator efiirwa mu bwangu okuyungibwa kwayo ku bbaatule-ekola voltage spikes ezisukka 100V. TVS diodes zikyusa amasoboza gano okutuuka ku ttaka mu nanoseconds, ne zikuuma ECUs ezikwatagana.

Ebintu ebikyusa okisayidi w’ekyuma (MOVs) .

MOVs ziraga obuziyiza obusinziira ku vvulovumenti-, nga zeeyisa nga insulators wansi wa vvulovumenti yazo ey’okusiba ne kondakita waggulu waayo. Obusobozi bwazo obw’okunyiga amaanyi amangi butuukira ddala ku byuma ebikozesa amasannyalaze agakulu-nga byolekedde okuwuuma okuleetebwa okumyansa.

MOV ebalirirwa ku 275V AC ng’erina obusobozi bw’okubuuka 6,500A esobola okunyiga okukuba ezitwala enkumi n’enkumi za joules. Okusuubula-off kuzingiramu terminal capacitance eya waggulu-emirundi mingi 1,000-5,000 pF-ekifuula MOVs obutasaana ku layini za siginiini za frequency enkulu gye zandikyusizza ennyo ensengekera z’amayengo.

Circuits ezikuuma amasannyalaze agasukkiridde

Current esukkiridde eyonoona circuits okuyita mu resistive heating. Trace ebalirirwamu amps 2 ezitwala amps 10 etuuka ku bbugumu erisukka diguli 150 mu sikonda ntono, n’esaanuusa ebiyungo bya solder n’okukoleeza PCB substrates.

Okukomya Amasannyalaze ag’Ebyuma

Active current limiting ekozesa circuits za transistor okutereeza current esinga okufuluma. Sense resistor eri mu lunyiriri n’omugugu ekulaakulanya vvulovumenti egeraageranye n’okutambula kwa kasasiro. Voltage eno bw’etuuka ku 0.6-0.7V-the base-emitter threshold ya monitoring transistor-transistor ekola era n’ekyusa base current okuva ku main pass transistor, ekikendeeza ku conduction yaayo.

Ku kkomo lya kasasiro wa 2-amp, sense resistor ebalirira okutuuka ku R=V/I=0.6V / 2A=0.3Ω. Okusaasaanya amaanyi kyetaagisa okulowooza ennyo: P=I2R=4W ku mugugu omujjuvu. Resistor ya 5-10W ng’erina ekifo ekimala ekya PCB copper ekakasa nti ebbugumu linywevu.

Enkola eno ey’obukuumi egaba okukoma ku kasasiro okutuufu, okuddibwamu awatali kukyusa kitundu. Circuit eddamu otomatika nga omugugu ogusukkiridde gulongooseddwa, ekigifuula ennungi eri amasannyalaze agagaba emigugu egy’enjawulo.

Fiyuzi

Fiyuzi zikiikirira obukuumi obwangu obw’akasannyalazo akasukkiridde-waya ennyimpi esaanuuka nga akasannyalazo kakola ebbugumu erisukkiridde. Fiyuzi ez’omulembe zirimu okulongoosa kungi: ebika by’okulwawo kw’obudde-bikozesa ebintu ebizito-ebizitowa ebigumira okutikka okusukkiridde okumpi, enkyukakyuka ez’amangu-okufuuwa zikozesa enkola ezitikkira sseppulingi-okuddamu amangu, era emibiri gya seramiki girimu butto azikiza arc-.

Okulonda obulungi fiyuzi kyetaagisa okutegeera enkola. Fiyuzi ya 1-amp tejja kufuuwa mangu ku 1.01 amps-yeetaaga 150-200% ya rated current okusobola okukola okukakasiddwa mu kiseera ekigere. Abakola dizayini batera okupima fiyuzi ku bitundu 150% ku masanyalaze aga bulijjo agasuubirwa okuziyiza okufuuwa okutawaanya ate nga bakakasa obukuumi.

Ebimenya Circuit

Circuit breakers zigatta okutegeera amasannyalaze agasukkiridde n’okukyusakyusa mu byuma. Dizayini za magineeti ez’ebbugumu-zikozesa ekitundu eky’ebyuma bibiri ekifukamira n’ebbugumu, mu mubiri ne kisumulula okukwatagana okutikkiddwa ensulo-. Ekintu kya magineeti-koyilo eyeetoolodde plunger-kiwa okugwa okw’amangu mu kiseera ky’okutambula okumpi nga kasasiro asukka emirundi 5-10 ku muwendo ogugereddwa.

Ebimenya ebyuma eby’amasannyalaze bikyusakyusa okukyusakyusa mu mbeera enkalu- mu kifo ky’ebitundu eby’ebyuma. Ebyuma bino bizuula overcurrent nga biyita mu current sensing ICs ne bikutula nga biyita mu MOSFETs mu microseconds. Okumalawo ebitundu ebitambula kyongera okwesigika era kisobozesa ebintu ebisoosooto nga programmable trip curves ne remote reset capability.

Obukuumi bw’okufuluma kw’amasannyalaze (ESD).

Okufuluma kw’amasannyalaze (electrostatic discharge) kubaawo nga ekisannyalazo ekikung’aanyiziddwa kikyusiddwa wakati w’ebintu ku potential ez’enjawulo. Omuntu atambula okuyita ku kapeti akuŋŋaanya 10,000-30,000 volts. Okukwatagana n’ekyuma eky’amasannyalaze kifulumya amasoboza gano mu nanoseconds, ne kivaamu ebiwujjo bya kasasiro ebisukka mu amps 10.

ESD protection circuits zikozesa diodes ez’enjawulo ezitegekeddwa okukyusa discharge current ku ground rails. Mu kiseera ky’okukola okwa bulijjo, dayodi zino zisigala nga zikyusiddwa-nga zikyusiddwa era nga tezirabika eri nkulungo. Ekintu ekibaawo mu ESD mu maaso-kikyusakyusa dayodi, ne kikola ekkubo erya wansi-ekikyusakyusa akasannyalazo akazikiriza okuva ku IC eziwulikika.

Parasitic inductance ekosa nnyo obulungi bw’obukuumi bwa ESD. Trace inductance wakati wa diode ne protected component ekola voltage spike mu kiseera ky’enkyukakyuka ya current ey’amangu (V=L × di/dt). 5 nH trace inductance ekolebwako 10 A/ns ekola 50V spike-eyinza okumala okwonoona ekitundu kyennyini ekikuumibwa. Okukendeeza ku inductance eno nga tuyita mu direct routing n’okwewala vias mu kkubo ly’okufulumya kisinga obukuumi.

Enkulungo z’obukuumi mu bbaatule za Lithium-Ion

Okutegeerabbaatule ya lithium ion kye kitekinologiya yeetaagibwa nnyo nga tonnaba kwekenneenya byetaago by’obukuumi. Battery ya lithium-ion kye kyuma ekitereka amasoboza ekiddamu okucaajinga ekikola amaanyi g’amasannyalaze nga kiyita mu kutambula kwa ion za lithium wakati wa electrodes positive ne negative mu kiseera ky’enzirukanya y’okucaajinga n’okufulumya. Battery zino zikyusizza ebyuma ebitambuza n’emmotoka ez’amasannyalaze olw’amaanyi gazo amangi n’obulamu bwazo obuwanvu. Naye, okukuuma bbaatule ya lithium-ion kukiikirira enkola ey’enjawulo nga okulemererwa kwa circuit kuli mu bulabe bw’omuliro n’okubwatuka. Obutoffaali buno obw’amasannyalaze bukola mu madirisa amafunda aga vvulovumenti ne kasasiro-mu ngeri entuufu 2.5-4.2V buli katoffaali nga emiwendo gy’okufulumya egisinga obunene gya 1-3C.

Okukuuma bbaatule IC Architecture

Ekiyungo ekikuuma lithium-ion ekya bulijjo kigatta ebitundu bisatu ebikulu: IC ey’obukuumi, MOSFET bbiri eza N-channel, ne resistor ya sense ya kasasiro. IC y’obukuumi erondoola obutasalako vvulovumenti y’obutoffaali ng’eyita mu kuyungibwa obutereevu ku terminal za positive ne negative. Ku kupima akasannyalazo, samples voltage okuyita mu MOSFET junction-leveraging FETs' on-resistance nga sensing element okusinga okugattako discrete resistor.

Famire ya DW01 ekiikirira IC ez'obukuumi bw'obutoffaali obumu -ezissibwa mu ngeri nnyingi-. Ebyuma bino birondoola embeera nnya ez’ensobi:

Obukuumi bw’okusasula ssente ezisukkiridde: Ekola nga voltage ya cell esukka 4.25-4.35V (okusinziira ku variant), eggulawo charge MOSFET ate nga ekkiriza okufulumya okuyita mu body diode.

Obukuumi bw’okufulumya amazzi ekisukkiridde: Triggers ku 2.3-2.5V, okuggulawo discharge MOSFET okuziyiza okufuluma okuzito okwonoona enkalakkalira ensengekera y’omunda ey’obutoffaali.

Okufulumya Okuyitiridde: Alondoola okugwa kwa vvulovumenti okuyita mu nkulungo ya MOSFET. Kasannyalazo bwe kakola okugwa kwa 150-200 mV (okukwatagana ne 3-8 amps okusinziira ku kulonda kwa FET), obukuumi buyingira mu 8-20ms.

Omukutu Omumpi: Ezuula okugwa kwa vvulovumenti okw’amangu nga kulaga okumpi obutereevu, okukutula mu microseconds 20-100.

Circuit y’obukuumi ekola okusoomoozebwa okunyuvu mu kutandika. Nga osooka okuyunga cell, circuit oluusi eremererwa okusobozesa output-ekintu ekiva mu mbeera y'obukuumi eya IC esookerwako. Ekigonjoola kyetaagisa oba okuyunga chajingi ku bubonero okukola obulungi oba okufunza akaseera katono ebitundu ebifuluma okuyita mu mbeera y'okusiba-okufuluma.

Enzirukanya ya Battery y'obutoffaali Multi-

Battery packs ezirina series-connected cells zeetaaga obukuumi obw'omulembe. Obutoffaali obw’enjawulo mu lunyiriri lw’omuddiring’anwa tekyewalika kwoleka enjawulo entono mu busobozi olw’enjawulo mu kukola. Mu kiseera ky’okucaajinga, obutoffaali obw’obusobozi obusingako-butuuka ku chajingi enzijuvu ate obutoffaali obunafu bugenda mu maaso n’okukkiriza akasannyalazo, ekivaako okusajjula okusukkiridde kw’ebintu ebinafu.

Enkola ez’omulembe ez’okuddukanya bbaatule (BMS) zikola ku kino nga ziyita mu kugeraageranya obutoffaali obukola oba obutakola. Passive balancing esaasaanya amasoboza agasukkiridde okuva mu butoffaali obujjuvu okuyita mu resistors, okwenkana vvulovumenti okubuna omuguwa. Active balancing ekyusa amasoboza wakati w’obutoffaali nga tukozesa capacitors oba inductors, okulongoosa efficiency naye nga kyongera ku buzibu n’omuwendo.

Secondary protection ICs ziwa backup layer nga primary protection eremereddwa. Mu nkola nga ebikozesebwa eby’amasannyalaze oba e-ddigi nga bbaatule zifuna embeera enzibu, okukuuma kwa layeri bbiri-kukendeeza ku bulabe bw’okulemererwa. Singa ekitundu ekikulu eky’obukuumi kikola bubi olw’okulemererwa kw’ekitundu oba okugwa mu pulogulaamu, ekisengejjo eky’okubiri erondoola vvulovumenti ne kasasiro mu bwetwaze, ne kiwa okukola okulemererwa-okutali kwa bulabe.

Okulondoola ebbugumu kujjuliza obukuumi bw’amasannyalaze mu bbaatule za lithium-ion. Thermistors eziteekeddwa ku mibiri gy’obutoffaali zizuula ebbugumu eritali lya bulijjo. Ebbugumu bwe lisukka 60-70℃, BMS ekendeeza ku charge/discharge current oba ekutula ddala pack. Okudduka okw’ebbugumu-embeera ng’obuziyiza obw’omunda bweyongera n’ebbugumu, okuvaamu ebbugumu erisingawo mu loopu y’okuddamu okulungi-ereeta akabi akasookerwako mu by’okwerinda mu tekinologiya wa lithium-ion.

Ebintu Ebirina Okulowoozebwako mu Dizayini y’Ekiyungo ky’Obukuumi

Okussa mu nkola obulungi circuit y’obukuumi kyetaagisa okutebenkeza ensonga eziwera ezivuganya.

Okulonda Ebitundu Okusuubula-offs

TVS diodes ziraga okukkaanya okwa bulijjo mu dizayini. Ebyuma ebirina vvulovumenti z’okusiba entono biwa obukuumi bw’ebitundu obulungi naye nga biraga capacitance esingako-ebiseera ebisinga 200-500 pF buli diode. Capacitance eno etikka layini za siginiini ez’amaanyi-sipiidi, ekoma ku bandwidth era eyinza okuleeta ensonga z’obulungi bwa siginiini mu USB 3.0 oba HDMI interfaces ezikola ku miwendo gya data egya gigabit eziwera.

Enkyukakyuka za TVS eza vvulovumenti eza waggulu-zikendeeza ku capacitance okutuuka ku 10-50 pF, okukuuma omutindo gwa siginiini naye nga zikwata ku vvulovumenti eziyinza okunyigiriza ebitundu ebiri wansi. Abakola dizayini balina okwekenneenya okugumiikiriza kwa vvulovumenti ya circuit ekuumibwa n’obwetaavu bwa siginiini okulonda ebyuma ebisinga obulungi.

Okulonda MOSFET okukuuma bbaatule kukulembeza obuziyiza obutono ku- (RDS(on)) okukendeeza ku kufiirwa kw’amaanyi mu kiseera ky’okukola okwa bulijjo. 0.1Ω FET etambuza 3 amps esaasaanya 0.9W nga ebbugumu-ery'amaanyi mu space-constrained battery packs. Okukendeeza ku RDS(on) okutuuka ku 0.02Ω kikendeeza ku kusaasaana okutuuka ku 0.18W, okulongoosa obulungi n’okukendeeza ku buzibu bw’ebbugumu.

Naye, FETs eza resistance eya wansi zitera okulaga capacitance ya gate eya waggulu, nga zeetaaga drive current nyingi okuva mu IC y’obukuumi. Era zigula ssente nnyingi. Okutebenkeza obulungi, omuwendo, n’ebizibu by’ebbugumu kivuga okusalawo kw’okulonda kwa FET.

Ebyetaago by’Obudde bw’Okuddamu

Circuits ez’obukuumi zirina okuddamu amangu okusinga ebitundu bwe biyinza okulemererwa. Ebbugumu ly’okuyungibwa kwa silikoni lirinnya ku diguli nga 1 buli milisekondi mu biseera by’ebintu ebisukkiridde. Transistor erimu ebbugumu ly’okuyunga erya diguli 150 erisinga obunene ekola ku diguli 25 ambient erina margin ya diguli 125. Ku 1℃/ms heating rate, okulemererwa kubaawo mu milliseconds 125.

Ebimenya ebyuma eby’ebbugumu-magineeti bitera okwetaaga milisekondi 50-200 okugwa ku 200% overcurrent-ekiyinza obutamala kukuuma semikondokita. Ebimenya ebyuma eby’amasannyalaze biddamu mu milisekondi 1-10, ne biwa obukuumi obumala. Obukuumi bwa ESD bulina okukola mu nanoseconds, nga ekintu kyonna eky’okufulumya kiwedde mu nanoseconds 100-200.

Okukwasaganya n’okulonda

Enkola ezirina layers ez’obukuumi eziwera zeetaaga okukwatagana okukakasa nti enkola y’emirimu entuufu. Lowooza ku ssimu ey’omu ngalo erimu ekiyungo ekikuuma bbaatule ya lithium-ion, obukuumi bwa USB port ESD, ne fiyuzi ekyusibwa mu kkubo ly’okucaajinga.

Mu kiseera ky’ensobi mu chajingi ekivaako amasannyalaze agasukkiridde, ekiyungo ekikuuma bbaatule kirina okusooka okukola, okukuuma fiyuzi olw’ensobi ez’amaanyi ennyo. Singa IC y’obukuumi eremererwa okugguka, fiyuzi egaba backup. ESD diodes zikwata ebibaawo ebiyitawo circuit endala ze zitasobola kuddamu mangu kimala. Buli kintu eky’obukuumi kitunuulira ekika ky’ensobi ekigere ku kiseera eky’enjawulo, ne kitondekawo okwekuuma mu buziba.

Okukozesa mu makolero n’emmotoka

Embeera z’amakolero ziteeka circuits mu mbeera z’amasannyalaze enzibu. Okukyusa mmotoka kuleeta ebiwujjo bya vvulovumenti ebya 500-1,000V. Ebyuma ebiweta bifuyira amaloboozi aga frequency enkulu okuyita mu layini ezigaba. Omulabe gusobola okugatta ebikumi n’ebikumi bya vvuloti mu waya ezifuga okuyita mu magnetic field induction.

Okukuuma circuit y’amakolero kukozesa obukodyo obuwerako omulundi gumu. Ebyuma ebikuuma amazzi agakulukuta ku bifo ebiyingira mu mpeereza bikwata ebiseera eby’ebweru. Circuits ssekinnoomu zikozesa circuit breakers ezipimiddwa ku kika ky’omugugu ekigere-motor-rated breakers zigumira inrush currents ya 6-10 times running current, ate standard breakers zandibadde nuisance-trip.

Enkola z’emmotoka zisanga okusoomoozebwa okw’enjawulo okunnyonnyolwa mu nkola ya ISO 7637 ne ISO 16750. Load dump transients zituuka ku 100-150V era ziwangaala okumala ebikumi n’ebikumi bya milliseconds. Cold cranking ekendeeza voltage ya battery okutuuka ku 3-6V ate nga esika amps 400-800. Okutandika okubuuka kuyinza okukozesa reverse polarity ku 14-16V.

Circuits ezikuuma mmotoka zigatta TVS diodes for fast transients, crowbar circuits for sustained overvoltage, ne reverse polarity diodes-zonna mu buzibu bw’obutonde obw’okukola diguli -40 okutuuka ku +125℃n’okuziyiza okukankana okutuuka ku 30G.

Tekinologiya w’obukuumi agenda okuvaayo

Enkyukakyuka okudda ku mmotoka ez’amasannyalaze n’enkola z’amasannyalaze agazzibwawo evuga obuyiiya bw’obukuumi. Semikondokita z’amaanyi ga SiC (silicon carbide) ne GaN (gallium nitride) zikola ku vvulovumenti eza waggulu ne firikwensi z’okukyusa okusinga ebyuma bya silikoni eby’ennono. Ebintu bino ebigazi-bandgap byetaaga obukuumi obw’enjawulo olw’empenda zaabyo ezikyukakyuka amangu (5-20 V/ns) n’okuwulikika ku gate overvoltage.

Enkola z’obukuumi ez’amagezi zigatta obusobozi bw’empuliziganya. Circuit breaker y’amakolero ewuliziganya n’enkola y’okuddukanya ekizimbe, ng’ekola lipoota ku vvulovumenti, akasannyalazo, ensonga y’amaanyi, n’amaanyi agakozesebwa. Okwekenenya okuteebereza kuzuula embeera ezikendeera-nga okweyongera mpolampola akasannyalazo akakulukuta-nga tezinnaba kuleeta kulemererwa.

Solid-state circuit breakers zimalawo ddala okukwatagana okw’ebyuma, nga zikozesa MOSFETs oba IGBTs okukyusa. Ebyuma bino biddamu mu microseconds era tebifuna kuvunda kwa contact okuva mu arcing. Enkola ezikozesebwa mu kiseera kino mulimu ebifo ebitereka amawulire ebyetaagisa okwesigika okw’amaanyi n’ennyonyi ng’okukendeeza ku buzito kwe kulaga nti ssente nnyingi.

Arc fault circuit interrupters zizuula omukono gw’amasannyalaze ogwa arcing-high-frequency current noise characteristic of air ionization. Ebyuma bino biziyiza omuliro oguva ku waya ezonoonese nga current esigala wansi w’ebipimo bya breaker ebya bulijjo naye nga arcing ekola ebbugumu erimala okukuma omuliro mu insulation.

Okugezesa n’okukakasa Circuit y’Obukuumi

Okukakasa omulimu gwa circuit y’obukuumi kyetaagisa ebyuma eby’enjawulo eby’okugezesa. Curve tracers zifuyira programed current oba voltage profiles nga zipima okuddamu kwa circuit. Ku kugezesa ESD, jenereta zifulumya ebifulumizibwa ebipimiddwa buli IEC 61000-4-2 specifications-ebiseera ebisinga 2-8 kV contact discharge ne 2-15 kV air discharge.

Circuits ezikuuma bbaatule ziyita mu charge/discharge cycling ku bbugumu erisukkiridde. Enkola z’okugezesa zikakasa enkola entuufu ku vvulovumenti eziragiddwa, nga zikakasa nti IC y’obukuumi etambula mu kugumiikiriza okulagiddwa. Okugezesa short-circuit kukozesa shorts ezifu okuyita mu circuit y'obukuumi, okukakasa nti MOSFETs zikutuka nga tekunnabaawo kwonooneka.

Okugezesa ebbugumu kusalawo okulinnya kw’ebbugumu ly’ebitundu mu mbeera z’ensobi. Kkamera za infrared zizuula ebifo ebibuguma ebiraga ekitundu kya kikomo ekitali kimala oba okuyungibwa kw’ebbugumu okw’ebitundu okubi. Resistors z’obukuumi zirina okukwata okusaasaanya omugugu mu bujjuvu-nga tezisukkulumye ku bbugumu erigereddwa, nga kyetaagisa okwekenneenya ebbugumu nga bukyali mu mutendera gwa dizayini.

Ebibuuzo Ebitera Okubuuzibwa

Ntegeera ntya oba ekyuma kyange kirina ebyuma ebikuuma?

Ebyuma ebisinga obungi eby’omulembe birimu obukuumi obumu. Ebyuma ebikozesa bbaatule-bulijjo bibaamu waakiri obukuumi obusookerwako. Noonya PCB entonotono eziyungiddwa ku terminals za bbaatule-zino zitera okubeeramu IC ez'obukuumi ne MOSFETs. Ebintu ebikozesebwa ebikkirizibwa okuweebwa satifikeeti ya UL oba CE byetaaga ebika by’obukuumi ebimu okusinziira ku nkola.

Circuits ezikuuma zisobola okulemererwa?

Yee, circuit z'obukuumi zisobola okulemererwa, wadde nga enkola ezikoleddwa obulungi-ziyingizaamu redundancy. Ebitundu biyinza oku short circuit okusinga open circuit-TVS diodes ne MOSFETs mu bujjuvu okulemererwa short, okukuuma obukuumi obumu okusinga okuleka circuits nga tezikuumibwa. Enkola eno ey’okulemererwa ennyonnyola lwaki layeri z’obukuumi ez’okubiri ziriwo mu nkola enkulu.

Njawulo ki eri wakati w'obukuumi obusookerwako n'obw'okubiri?

Obukuumi obusookerwako buddamu embeera z’ensobi eza bulijjo era budda engulu mu ngeri ey’otoma. Obukuumi obw’okubiri bukola ng’obukuumi obusookerwako bulemereddwa, emirundi mingi bukutula enkalakkalira ku nkulungo okuyita mu fiyuzi oba switch y’ebbugumu etali -resettable. Enkola eno eya layeri ekakasa obukuumi ne bwe kiba nti ebitundu bigudde.

Battery zonna eza lithium-ion zeetaaga circuit ez'obukuumi?

Battery za lithium-ion ezilung'amibwa ezitundibwa mu by'obusuubuzi zirina okubeeramu obukuumi. Obutoffaali "obubisi" obutaliimu bukuumi buliwo naye bulina okukozesebwa mu nkola zokka nga circuit z'obukuumi ez'ebweru ziwa obukuumi. Okukozesa obutoffaali obutakuumibwa mu nkola ezitaliiko nkola nnungi ey’okuddukanya bbaatule kireeta obulabe obw’amaanyi obw’omuliro n’okubwatuka.

Ensonda z’amawulire:

Okwekenenya akatale k’okukuuma circuit - Straits Research, 2024

ISO 16750-2 Omutindo gw’okugezesa amasannyalaze g’emmotoka

IEC 61000-4-2 Ebikwata ku kugezesa ESD

Okukuuma bbaatule IC Ebiwandiiko eby'ekikugu - ABLIC Inc., 2025

Ebiwandiiko by'okukozesa TVS Diode - Ebyuma bya Analog, 2021