Binciken gazawar MOSFET: Fahimta, Rigakafi, da Magani

Bayani mai sauri:MOSFETs na iya gazawa saboda matsalolin lantarki, zafi, da na inji daban-daban. Fahimtar waɗannan hanyoyin gazawar yana da mahimmanci don ƙirƙira amintattun tsarin wutar lantarki. Wannan cikakken jagorar yana bincika hanyoyin gazawar gama gari da dabarun rigakafi.

Hannun gazawar MOSFET gama gari da Tushen Su

1. Rashin Wutar Lantarki

Rushewar Gate oxide
Rushewar dusar ƙanƙara
Punch-ta
Lalacewar fitarwa a tsaye

2. Kasawar da ke da alaƙa da thermal

Rushewar sakandare
Guduwar thermal
Delamination kunshin
Bond waya dagawa

Yanayin gazawa	Dalilan Farko	Alamomin Gargadi	Hanyoyin Rigakafi
Rushewar Gate Oxide	Matsanancin VGS, abubuwan ESD	Ƙarfafa zubewar kofa	Ƙofar ƙarfin lantarki kariya, ESD matakan
Thermal Runaway	Ƙarfin wutar lantarki mai yawa	Hawan zafin jiki, rage saurin sauyawa	Dace da thermal zane, derating
Rushewar Avalanche	Ƙwararrun ƙarfin lantarki, sauyawar inductive mara ɗaure	Gajeren da'ira mai magudanar ruwa	Snubber circuits, ƙarfin lantarki clamps

Winsok's Robust MOSFET Solutions

Sabbin tsararrunmu na MOSFETs suna da ingantattun hanyoyin kariya:

Ingantaccen SOA (Yankin Aiki Lafiya)
Ingantacciyar aikin zafi
Kariyar ESD da aka gina a ciki
Ƙirar-ƙirar ƙanƙara

Bincika Kariyar MOSFET Series

Cikakkun Nazari na Hanyoyin Rashin Ganewa

Rushewar Gate Oxide

Mahimman Ma'auni:

Matsakaicin Ƙofar-Source Voltage: ± 20V na yau da kullun
Ƙofar Oxide Kauri: 50-100nm
Ƙarfin Filin Rushewa: ~ 10 MV/cm

Matakan Kariya:

Aiwatar da ƙarfin wutar lantarki na ƙofar kofa
Yi amfani da jerin ƙofa resistors
Shigar da diodes TVS
Ayyukan shimfidar PCB masu dacewa

Sarrafa thermal da Rashin Rigakafi

Nau'in Kunshin	Max Junction Temp	Shawarar Derating	Magani Sanyi
TO-220	175°C	25%	Heatsink + Fan
Farashin D2PAK	175°C	30%	Babban Yanki na Copper + Zafi Na Zaɓa
SOT-23	150°C	40%	PCB Copper Zuba

Muhimman Nasihun ƙira don Amincewar MOSFET

Tsarin PCB

Rage yankin madauki na ƙofar
Rarrabe iko da filayen sigina
Yi amfani da haɗin tushen Kelvin
Inganta thermal ta hanyar jeri

Kariya na kewaye

Aiwatar da da'irar farawa mai laushi
Yi amfani da snubbers masu dacewa
Ƙara kariyar wutar lantarki ta baya
Kula da zafin na'urar

Hanyoyin Bincike da Gwaji

Basic Tsarin Gwajin MOSFET

Gwajin Ma'auni A tsaye
- Ƙofar wutar lantarki (VGS(th))
- Magudanar ruwa a kan juriya (RDS(on))
- Ƙofar leakage na yanzu (IGSS)
Gwaji mai ƙarfi
- Lokacin canzawa (ton, toff)
- Halayen cajin Ƙofar
- Ƙarfin fitarwa

Ayyukan Haɓaka Dogaran Winsok

Cikakken nazari na aikace-aikace
Binciken thermal da haɓakawa
Gwajin dogaro da tabbatarwa
Tallafin dakin gwaje-gwaje na gazawa

Bukatar Binciken Kasawa
Goyon bayan sana'a

Kididdigar Dogara da Nazarin Rayuwa

Ma'aunin Dogarorin Maɓalli

Matsakaicin FIT (Rashi cikin Lokaci)

Adadin gazawa a cikin sa'o'i biliyan na na'ura

0.1 - 10 FIT

Dangane da sabon jerin MOSFET na Winsok a ƙarƙashin yanayi mara kyau

MTTF (Matsakaicin Lokacin Faduwa)

Rayuwar da ake tsammani a ƙarƙashin ƙayyadadden yanayi

>10^6 hours

A TJ = 125 ° C, ƙananan ƙarfin lantarki

Yawan Tsira

Kashi na na'urorin da suka tsira fiye da lokacin garanti

99.9%

A shekaru 5 na ci gaba da aiki

Abubuwan Rage Rayuwa

Yanayin Aiki	Factor Derating	Tasiri akan Rayuwa
Zazzabi (kowace 10 ° C sama da 25 ° C)	0.5x ku	50% raguwa
Damuwar wutar lantarki (95% na max rating)	0.7x ku	30% raguwa
Mitar Canjawa (2x mara kyau)	0.8x ku	20% raguwa
Humidity (85% RH)	0.9x ku	10% raguwa

Rarraba Yiwuwar Rayuwa

Rarraba Weibull na MOSFET na rayuwa yana nuna gazawar farko, gazawar bazuwar, da lokacin lalacewa

Abubuwan Damuwar Muhalli

Hawan zafin jiki

85%

Tasiri kan raguwar rayuwa

Keke wutar lantarki

70%

Tasiri kan raguwar rayuwa

Damuwar Injini

45%

Tasiri kan raguwar rayuwa

Gaggauta Sakamakon Gwajin Rayuwa

Nau'in Gwaji	Sharuɗɗa	Tsawon lokaci	Yawan gazawa
HTOL (High Temperature Operating Life)	150 ° C, Max VDS	Awanni 1000	<0.1%
THB (Matsalar Humidity Bias)	85°C/85% RH	Awanni 1000	<0.2%
TC (Yukan hawan zafin jiki)	-55°C zuwa +150°C	Zagaye 1000	<0.3%