Puas yog lub tshuab hluav taws xob hloov hluav taws xob loj?
Thaum qhov hloov pauv txuas, tam sim no yuav ntws los ntawm qhov hluav taws xob input, VIN, mus rau thawj qhov hloov pauv, thiab mus rau qhov hloov. Lub sij hawm no rau pem hauv ntej diode D5 yuav yog pem hauv ntej biased. Freewheeling diodes, ntawm qhov tod tes, yog thim rov qab. Inductor L1 thiab tso zis capacitor C2 yuav tsub nqi thiab tam sim no yuav ntws los ntawm qhov thib ob winding mus rau cov zis. Thaum lub sij hawm hloov tawm, tsis muaj qhov tam sim no rub tawm los ntawm cov tswv yim, tab sis tam sim no ntawm thawj winding yuav txuas ntxiv mus hla RCD clamp kom txog rau thaum lub zog saum toj no yog dissipated. Thaum cov tub ntxhais xau zog, lub diode (D2) ntawm RCD yuav thim rov qab. Lub diode rau pem hauv ntej yuav thim rov qab vim tias tam sim no tsis tau kos los ntawm qhov chaw nkag VIN.
Ntawm qhov tod tes, lub freewheeling diode yuav ua rau pem hauv ntej biased. Ob lub inductor L1 thiab capacitor C2 siv lub zog them nyiaj los muab lub zog xav tau ntawm kev thauj khoom. Muaj ntau yam topologies muaj rau DCDC hloov pauv hloov pauv xws li ib nrab-bridge, tag nrho-bridge, resonant (xws li LLC) lossis thawb-rub. Vim yog kev hloov pauv kev ua haujlwm, cov topologies no yog cov khoom siv hluav taws xob hloov hluav taws xob uas muaj ntau lub tshuab hloov pauv, ua ke nrog cov converters tau tham saum toj no. Qhov tseeb, nws yog lub zog siv hluav taws xob uas siv cov cuab yeej hluav taws xob niaj hnub siv hluav taws xob los tswj lub sijhawm hloov pauv thiab ib txwm tswj hwm qhov tso tawm hluav taws xob ruaj khov. Hloov cov khoom siv hluav taws xob feem ntau suav nrog pulse width modulation (PWM), thiab kev tswj hwm muaj ICs thiab MOSFETs. Nrog rau kev tsim hluav taws xob hluav taws xob, kev hloov hluav taws xob hloov hluav taws xob kuj tseem txhim kho tas li. Tam sim no, hloov cov khoom siv hluav taws xob tau siv dav hauv cov khoom siv hluav taws xob vim lawv qhov me me, lub teeb yuag, thiab kev ua haujlwm siab. Qhov no yog ib txoj hauv kev siv hluav taws xob rau kev txhim kho cov ntaub ntawv hluav taws xob kev lag luam.
