Rongorongo

Te matauranga taketake mo te urutau hiko

Ko te urutau hiko e mohiotia ana ko te kaha nui me te penapena hiko.E tohu ana i te ahunga whanaketanga o te tuku hiko kua whakaritea.I tenei wa, kua whakamahia whanuitia te hikohiko hiko monolithic na te mea he nui nga painga o te whakaurunga teitei, te utu utu nui, te ara iahiko peripheral ngawari me te tohu mahi pai rawa atu.Kua waiho hei hua pai mo te urutau hiko hiko me te iti-hiko i roto i te hoahoa.

Whakarereketanga whanui o te patere

He aratau mana whakahuri e whakamahia nuitia ana i roto i te urutau hiko.Ko te whakarereketanga whanui o te puihi he aratau mana tairitenga, e whakarereke ana i te riipene o te turanga transistor, i te kuaha MOS ranei i runga i te huringa o te kawenga e rite ana ki te huri i te wa kawe o te transistor, te MOS ranei, kia huri ai te putanga o te whakawhiti i te mana whakahaere.Ko tana ahuatanga ko te pupuri tonu i te auau whakawhiti, ara, ka noho tonu te huringa whakawhiti, me te whakarereke i te whanui o te pupuhi ki te whakaiti i te huringa o te ngaohiko whakaputa o te urutau hiko ka huri te ngaohiko me te utaina.

Reeti whakatikatika kawenga whakawhiti

Ko te reiti ture kawenga whakawhiti e pa ana ki te tere huringa o te ngaohiko whakaputa i puta mai i te huringa o te kawenga i roto i te urutau hiko whakaputa maha-hongere.Ko te huringa o te kawenga mana ka puta te huringa o te whakaputanga mana.Ka piki ake te kawenga, ka heke te putanga.Engari, ka heke te kawenga, ka piki ake te putanga.He iti te huringa putanga na te pai o te huringa kawenga mana, a ko te taurangi whanui ko te 3% - 5%.He tohu nui ki te ine i te ngaohiko whakapumau mahi o te urutau hiko putanga maha-hongere.

Mahi whakarara

Hei whakapai ake i te putanga o naianei me te mana whakaputa, ka taea te whakamahi i nga taapiri hiko maha ki te whakarara.I roto i nga mahi whakarara, me rite tonu te ngaohiko whakaputa o ia urutau hiko (he rereke to raatau mana whakaputa), me te tikanga tiritiri o naianei (e kiia nei ko te tikanga tiritiri o naianei) hei whakarite i te putanga o ia waa. ka tohatohahia te urutau hiko i runga i te whakarea taurite kua tohua.

tātari pokanoa hiko

Ko te tātari pokanoa hiko, e mohiotia ana ko "EMI tātari", he taputapu ara iahiko hiko e whakamahia ana hei pehi i te pokanoa hiko, ina koa te haruru i te raina hiko, te raina tohu whakahaere ranei.He taputapu tātari ka taea te pehi i te haruru o te matiti hiko me te whakapai ake i te kaha aukati o nga taputapu hiko me te pono o te punaha.Ko te tātari pokanoa hiko no te tātari RF rua.I tetahi taha, me tarai te wawaotanga hiko o waho mai i te matiti hiko AC;

I tetahi atu taha, ka taea hoki te karo i te haruru o waho o ana taputapu, kia kore ai e pa ki te mahi noa o etahi atu taputapu hiko i roto i te taiao hiko.Ka taea e te tātari EMI te whakakore i te aratau rangatū me te aratau noa.Me hono te tātari EMI ki te mutunga AC taumai o te urutau hiko.

radiator

He taputapu whakamahana wera e whakamahia ana hei whakaiti i te pāmahana mahi o nga taputapu semiconductor, ka taea te karo i te pāmahana matua o te ngongo ki runga ake i te teitei o te pāmahana hononga na te ngoikore o te wera o te wera, kia tiakina ai te urutau hiko mai i te wera nui.Ko te ara o te tohanga wera mai i te matua ngongo, pereti tohanga wera iti (te anga ngongo ranei) > radiator → ka mutu ki te hau huri noa.He maha nga momo radiators, penei i te momo pereti papatahi, te momo papa (PCB), te momo riu, te momo interdigital me etahi atu.Me noho matara atu te radiator mai i nga puna wera penei i te hurihanga hiko hiko me te ngongo whakawhiti hiko ka taea.

Te uta hiko

Ko te tauira whaipainga e pa ana ki tetahi taputapu hiko i whakamahia motuhake hei kawenga whakaputa hiko.Ko te kawenga hiko ka taea te whakarereke i raro i te mana o te rorohiko.Ko te utaina hiko he taputapu e pau ana te hiko hiko ma te whakahaere i te mana o roto (MOSFET) ranei te rere o te kawe (huringa mahi) o te transistor me te whakawhirinaki ki te mana o te ngongo hiko.

tauwehe mana

Ko te take mana e pa ana ki te ahua o te kawenga o te ara iahiko.E tohu ana i te ōwehenga o te mana kaha ki te kaha kitea.

whakatika tauwehe mana

PFC mo te poto.Ko te whakamaramatanga o te hangarau whakatika tauwehe mana ko: te tauwehe hiko (PF) ko te tauwehenga o te mana kaha P ki te mana kitea s.Ko tana mahi ko te pupuri i te hiko urunga AC i roto i te waahanga me te ngaohiko whakauru AC, te tarai i nga orite o naianei, me te whakanui ake i te mana o te taputapu ki te uara kua whakaritea tata ki te 1

Whakatikatika tauwehe mana hāngū

Ko te whakatikatika i te tauwehe hiko ka kiia ko te PPFC (e mohiotia ana ko te PFC hāngū).Ka whakamahia te inductance wahangu mo te whakatikatika i te take mana.He maamaa, he iti te utu o tana ara iahiko, engari he ngawari ki te whakaputa haruru, ka taea anake te whakanui ake i te tauwehe hiko ki te 80%.Ko nga painga nui} o te whakatikatika i nga take hiko hāngū ko: te ngawari, te utu iti, te pono me te EMI iti.Ko nga ngoikoretanga ko: te rahi me te taumaha, he uaua ki te whiwhi i te mana nui, me te mahi mahi e pa ana ki te auau, te uta me te ngaohiko whakauru.

Te whakatikatika i te tauwehe mana kaha

Ko te whakatika i te tauwehe mana kaha ka kiia ko APFC (e mohiotia ana ko PFC kaha).Ko te whakatikatika i te tauwehe hiko kaha e pa ana ki te whakanui ake i te tauwehe mana whakauru ma te ara iahiko hohe (he ara iahiko kaha), me te whakahaere i te taputapu whakawhiti kia whai te ahua ngaru o naianei i te ngaru ngaohiko whakauru.Ka whakatauritea ki te ara iahiko whakatikatika take hiko (paahiko hiko), he uaua ake te taapiri i te inductance me te capacitance, a he pai ake te whakapai ake o te tauwehe mana, engari he nui ake te utu ka heke te pono.Ka taapirihia he ara iahiko hurihanga hiko i waenga i te piriti whakatika whakauru me te punga taapiri tātari putanga hei whakatika i te naianei whakauru ki roto i te ngaru o te ngaru he rite te waahanga ki te ngaohiko whakauru me te kore he rerekee, a ka taea e te tauwehe mana te eke ki te 0.90 ~ 0.99.

欧规-6


Wā tuku: Apr-12-2022