Hlau-oxide-semiconductor field-effect transistors (MOSFETs) tau hloov pauv kev lag luam hluav taws xob, dhau los ua cov khoom siv dav dav hauv ntau lub voj voog. Thaum lawv lub luag haujlwm tseem ceeb yog los tswj thiab nthuav tawm cov teeb liab hluav taws xob, MOSFETs kuj tseem muaj feem cuam tshuam txog qhov tseem ceeb ntawm lub cev: lub cev diode. Cov ntawv blog no delves rau hauv qhov intricacies ntawm MOSFET lub cev diodes, tshawb txog lawv cov yam ntxwv, qhov tseem ceeb hauv kev tsim hluav taws xob, thiab cov ntawv thov muaj peev xwm.
Unveiling MOSFET Lub Cev Diode
Embedded nyob rau hauv lub MOSFET qauv, lub cev diode yog ib tug inherent parasitic hlws ris uas tsim ntawm lub ntws thiab qhov chaw cheeb tsam. Qhov no diode nthuav tawm unidirectional tam sim no ntws, tso cai tam sim no dhau los ntawm qhov ntws mus rau qhov chaw tab sis tsis hloov pauv.
Qhov tseem ceeb ntawm lub cev Diode hauv Circuit Court tsim
Lub cev diode plays lub luag haujlwm tseem ceeb hauv ntau yam kev siv hluav taws xob, tshwj xeeb hauv cov hluav taws xob hluav taws xob:
Freewheeling Diode: Thaum lub sij hawm hloov tawm ntawm MOSFET, lub cev diode ua cov inductive tam sim no los ntawm kev thauj khoom, tiv thaiv qhov hluav taws xob thiab tiv thaiv MOSFET los ntawm kev puas tsuaj.
Kev tiv thaiv tam sim no rov qab: Hauv cov kab hluav taws xob uas rov qab ntws tam sim no yog qhov kev txhawj xeeb, lub cev diode ua qhov cuam tshuam, tiv thaiv tam sim no los ntawm ntws rov qab rau hauv MOSFET.
Snubber Diode: Lub cev diode tuaj yeem ua lub snubber diode, dissipating zog khaws cia hauv cov kab mob parasitic inductances thiab tiv thaiv qhov hluav taws xob overshoots thaum hloov cov xwm txheej.
Kev txiav txim siab rau MOSFET Lub Cev Diodes
Thaum lub cev diode muaj cov txiaj ntsig zoo, nws yog qhov tseem ceeb uas yuav tsum xav txog qee yam hauv kev tsim hluav taws xob:
Rov qab Voltage Peev Xwm: Lub cev diode qhov rov qab qhov ntsuas hluav taws xob yuav tsum sib phim lossis tshaj qhov hluav taws xob rov qab qhov siab tshaj plaws los tiv thaiv kev tawg.
Forward Tam sim no tuav: Lub cev diode lub peev xwm rau pem hauv ntej yuav tsum txaus los tuav lub ncov tam sim no thaum lub sij hawm freewheeling los yog thim rov qab scenarios.
Switching Speed: Lub cev diode hloov ceev, tshwj xeeb tshaj yog nyob rau hauv high-frequency daim ntaub ntawv, yuav tsum tsis txhob qhia tseem ceeb qeeb los yog poob.
Kev siv ntawm MOSFET Lub Cev Diodes
Lub cev diode pom cov ntawv thov nyob rau hauv ntau yam sib txawv ntawm circuits:
DC-DC Converters: Nyob rau hauv puck converters, lub cev diode ua raws li ib tug freewheeling diode, tiv thaiv MOSFET los ntawm inductive voltage spikes.
Lub cev muaj zog tswj Circuits: Lub cev diode tiv thaiv kev thim rov qab thaum lub cev muaj zog nres lossis tsim rov qab EMF.
Cov Khoom Siv Hluav Taws Xob: Hauv cov khoom siv hluav taws xob, lub cev diode tiv thaiv MOSFET thaum hloov cov hloov pauv thiab tiv thaiv qhov rov qab tam sim no los ntawm kev thauj khoom.
Xaus
MOSFET lub cev diode, feem ntau saib tsis taus, ua lub luag haujlwm tseem ceeb hauv kev tsim hluav taws xob, tshwj xeeb hauv hluav taws xob hluav taws xob. Nkag siab txog nws cov yam ntxwv, qhov tseem ceeb, thiab cov kev txwv yog qhov tseem ceeb rau kev tsim cov kab hluav taws xob muaj zog, ua tau zoo, thiab txhim khu kev qha. Raws li MOSFET thev naus laus zis nce qib, lub cev diode qhov tseem ceeb yuav nyob twj ywm, ua kom nws muaj feem cuam tshuam txuas ntxiv hauv ntiaj teb kev hloov pauv ntawm hluav taws xob.
Post lub sij hawm: Jun-07-2024