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Hoe om China DC-DC-kragmodule te kies? Waarom 'n DC-DC-kragmodule kies?
Author： ZYG Power Module Time： 2022-7-29
Vandag word DC-DC-kragmodules wyd gebruik in pos- en telekommunikasietoerusting, basisstasies, gebruikerskragstelsels, moniteringstelsels en ander toerusting, industriële outomatiseringstoerusting en baie ander velde. So, wat presies is 'n DC-DC-kragmodule, en waaraan moet aandag gegee word wanneer dit gebruik word?
'n GS-GS-kragmodule is 'n kragmodule wat GS-krag na GS-krag omskakel. Van wat gepraat word, mag baie mense vra, is dit nie onnodig om DC na DC om te skakel nie? Trouens, in die proses van daaglikse gebruik is ons stroom nie staties nie, soms word hoë spanning vereis, en soms word lae spanning vereis. Die DC-DC-kragmodule is om hoëspanning of laespanningstroom om te skakel na die druk wat ons benodig. Dit werk deur gelykstroom om te skakel na wisselstroom, en wisselstroom na die gelykstroom wat ons benodig.
In daaglikse gebruik word die DC-DC-kragtoevoermodule voltooi deur die skakel-ossillasiekring, wat self algemene modus en differensiële modus geraasinterferensie sal genereer. Dit is dus belangrik om te weet dat die huidige waarde meer as twee keer die insetstroomwaarde moet wees. Die interne weerstand van die kragtoevoer moet laag wees om GS-verbruik te verminder. Daarbenewens, ten einde die sterk betroubaarheid van die kragmodule onder langtermynwerking te verseker, moet sy werkskrag meer as 10% van die nominale drywing wees, om te verhoed dat die module vassit of effens uitset wat spanning onstabiliteit veroorsaak, wat sal ons werk beïnvloed.
Baie kliënte gebruik kragmodules om kragisolasie te bewerkstellig. Dan, volgens verskillende isolasievereistes, is dit nodig om verskillende kragbronne te kies, en daar moet genoeg stroombaanafstand tussen die uitset- en insetkragbronne wees om te verhoed dat die isolasie-effek tydens ontwerp verswak word.
Hoe om die regte kragmodule te kies
1. Kringontwerpbeginsels en -tegnologie
Slegs vanuit 'n professionele oogpunt kan die beginsel van die kring en die kwaliteit van die kring onderskei word. Tans kan kragmodules in twee tipes verdeel word: kaal bord en gevul en verseël. Die kaal bord kan in twee tipes verdeel word: redelik, ordelik, vrygewig, ordelike uitleg van elektroniese komponente, gesoldeer en reguit. Die verpakte verseëlde module kan egter nie binne gesien word nie, maar omdat dit nie blootgestel is nie, is dit baie beter wat veiligheid en prestasie-aanwysers betref. Die soldeerproses kan handsoldeer en golfsoldeer insluit. Die soldeerkwaliteit van gemeganiseerde golfsoldeer is beter as dié van handsoldeer.
2. Komponente van die skyfie
Die kern van die kragbron is die geïntegreerde stroombaan, wat soos die brein van die kragbron is. Die kwaliteit van die geïntegreerde stroombaan beïnvloed die parameters van die kragtoevoer direk.
3. Transformatorkomponente
Bepaal of die kragtoevoer, temperatuurweerstand, ens. transformators is. Die transformator is verantwoordelik vir die voltooiing van die AC- en DC-kragtoevoer, en die energieoorlading sal die bomwerper versadig.
4. Elektrolitiese kapasitors en keramiekkapasitors
Omdat elektrolitiese kapasitors heeltemal monolitiese kapasitors is, het hulle hoë betroubaarheid. Hulle gebruik sulfaat as 'n isolerende medium, wat die volume kleiner kan maak. Die +-simbool en sommige merksimbole word daarby gevoeg. Hulle word oor die algemeen gebruik vir lae-frekwensie kruiskoppeling en omseil filters. Die nadeel is dat Die verlies aan muone groot is. As gevolg van die gebruik van volle monolitiese elektrolitiese kapasitors, is die betroubaarheid hoog. As gevolg van die gebruik van spesiale materiale, is die werkverrigting beter as dié van gewone elektrolise, en die frekwensie-eienskappe is beter, maar die kapasiteit is te veel. Kan gebruik word in presisiekringe soos ossillators of tydberekeningsbane.
Keramiese kapasitors sluit in keramiek diëlektriese kapasitors, keramiek chip kapasitors, keramiek buis kapasitors en keramiek semi-veranderlike kapasitors. Dit is hoofsaaklik nie-polêr, die diëlektriese materiaal is goed, en die kapasiteit kan nie te groot wees nie. Geskik vir hoëfrekwensiekringe.
5. Batch toetsing van veroudering en hoë temperatuur veroudering
Maak nie saak hoe goed 'n produk se materiaal en produksieprosesse beheer word nie, inbrandtoetsing word vereis. Aangesien die insetopsporing van elektroniese komponente en transformators moeilik is om te beheer, kan slegs deur die veroudering en hoë temperatuurmonsterneming van die hele bondel kragbronne die kwaliteitstabiliteit van hierdie bondel kragbronne en of daar potensiële veiligheidsgevare opgespoor word, opgespoor word. Materiaal.
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