Reverse current ndipo apo voltage pakubuda kwesystem yakakwira kudarika voltage painopinza, zvichiita kuti ikozvino iyerere nepakati pehurongwa ichidzokera kumashure.
Kwakabva
1. Diode yemuviri inove yakarerekera kumberi kana MOSFET ichishandiswa pakurodha switching application.
2. kudonha kamwe kamwe mumagetsi ekupinza kana simba rekushandisa rinobviswa kubva muhurongwa.
Dzimwe nguva apo reverse ikozvino blocking inoda kutariswa:
1. apo simba rakapetwa kakapetwa kaviri rinodzorwa neMOS
2. Oring control.ORing yakafanana nekuwedzera simba kwesimba, kunze kwekuti panzvimbo yekusarudza magetsi ekusimbisa sisitimu, iyo yakanyanya voltage inogara ichishandiswa kusimbisa sisitimu.
3. inononoka voltage kudonha panguva yekurasikirwa kwesimba, kunyanya kana iyo goho capacitance yakakura kwazvo kupfuura yekupinza capacitance.
Njodzi
1. reverse current inogona kukanganisa mukati medunhu nemagetsi
2. reverse current spikes inogonawo kukuvadza tambo nema connectors
3. muviri diode yeMOS inokwira mukushandiswa kwesimba uye inogona kutokuvadzwa
Optimization nzira:
1. Shandisa diodes
Diode, kunyanya maSchottky diodes, anodzivirirwa kubva kune reverse current uye reverse polarity, asi anodhura, ane high reverse leakage currents, uye anoda kupisa kupisa.
2. Shandisa back-to-back MOS
Mativi ese ari maviri anogona kuvharwa, asi anotora nzvimbo yakakura yebhodhi, yakakwira conduction impedance, mutengo wakakwira.
Mumufananidzo unotevera, iyo control transistor conduction, muunganidzi wayo yakaderera, maviri PMOS conduction, kana transistor ichidzima, kana iyo inobuda yakakwira kupfuura iyo inopinza, kurudyi kweMOS body diode conduction, kuitira kuti D nhanho ive. yakakwirira, ichiita iyo G level yakakwira, rutivi rworuboshwe rweMOS body diode harupfuuri, uye panguva imwe chete, nekuda kweMOS yeVSG yemuviri diode voltage kudonha haisi kusvika pachikumbaridzo voltage, saka iyo maviri MOS akavhara pasi, iyo yakavharira yakabuda kune yekupinda ikozvino.Izvi zvinovharira ikozvino kubva kune yakabuda kuenda kune inopinza.
3. Reverse MOS
Reverse MOS inogona kuvharira iyo inobuda kune yekuisa reverse ikozvino, asi chakashata ndechekuti panogara paine nzira yemuviri diode kubva pakupinza kuenda kune inobuda, uye isina kungwara zvakakwana, kana iyo yakabuda yakakura kupfuura yekupinza, haigone kutendeuka. kubva paMOS, asi zvakare inoda kuwedzera voltage yekuenzanisa wedunhu, saka kune gare gare yakakodzera diode.
4. Mutoro chinja
5. Multiplexing
Multiplexing: kusarudza chimwe chezviviri kana kupfuura zvekushandisa zvekushandisa kubva pakati pavo kuti zvigone kuburitsa kamwe chete.
6. Ideal Diode
Pane zvibodzwa zviviri mukugadzira diode yakanaka, imwe ndeyekutevedzera Schottky uye imwe yacho ndeyekuti panofanirwa kuve neinopinza-yekubuda kuenzanisa wedunhu kuidzima nekumashure.
Nguva yekutumira: Aug-10-2023