1. Kev tswj hluav taws xob ua haujlwm
Tsis zoo li bipolar hlws ris transistors (BJTs) uas yog tam sim no-tswj cov khoom, lub zog MOSFETs yog voltage-tswj. Cov yam ntxwv tseem ceeb no muaj ntau yam txiaj ntsig tseem ceeb:
- Simplified rooj vag tsav yuav tsum
- Kev siv hluav taws xob qis dua hauv kev tswj Circuit Court
- Muaj peev xwm hloov tau sai dua
- Tsis muaj kev txhawj xeeb txog kev puas tsuaj thib ob
Daim duab 1: Simplified gate drive yuav tsum tau ntawm MOSFETs piv rau BJTs
2. Superior Switching Performance
Fais fab MOSFETs ua tau zoo nyob rau hauv high-frequency switching applications, muab ntau qhov zoo dua li BJTs:
Daim duab 2: Hloov kev sib piv ceev ntawm MOSFET thiab BJT
| Parameter | Lub zog MOSFET | BJT |
|---|---|---|
| Hloov ceev | Ceev heev (ns range) | Nruab nrab (μs range) |
| Hloov Losses | Tsawg | Siab |
| Hloov siab tshaj plaws | > 1 MHz | ~ 100 kHz |
3. Cov yam ntxwv cua sov
Fais fab MOSFETs nthuav tawm cov yam ntxwv zoo tshaj plaws uas ua rau lawv muaj kev ntseeg siab thiab ua haujlwm:
Daim duab 3: Kub coefficient ntawm RDS(on) nyob rau hauv lub hwj chim MOSFETs
- Qhov zoo kub coefficient tiv thaiv thermal runaway
- Zoo dua tam sim no sib koom hauv kev ua haujlwm sib luag
- Ntau dua thermal stability
- Qhov dav dav kev nyab xeeb ua haujlwm (SOA)
4. Tsawg Nyob Hauv Xeev Tsis Txaus
Niaj hnub nimno fais fab MOSFETs ua tiav tsis tshua muaj kev tiv thaiv hauv xeev (RDS(on)), ua rau ntau yam txiaj ntsig:
Daim duab 4: Kev txhim kho keeb kwm hauv MOSFET RDS(on)
5. Paralleling peev xwm
Fais fab MOSFETs tuaj yeem txuas tau yooj yim nyob rau hauv tib lub sijhawm los tswj cov dej ntws siab dua, ua tsaug rau lawv qhov zoo kub coefficient:
Daim duab 5: Kev sib koom tam sim no hauv kev sib txuas nrog MOSFETs
6. Ruggedness thiab Reliability
Power MOSFETs muaj cov yam ntxwv zoo heev thiab kev ntseeg tau zoo:
- Tsis muaj qhov tshwm sim thib ob
- Inherent lub cev diode rau rov qab voltage tiv thaiv
- Zoo heev avalanche muaj peev xwm
- Muaj peev xwm dV/dt
Daim duab 6: Safe Operating Area (SOA) sib piv ntawm MOSFET thiab BJT
7. Tus nqi-zoo
Thaum ib tus neeg lub zog MOSFETs tuaj yeem muaj tus nqi pib dua piv rau BJTs, lawv cov txiaj ntsig tag nrho cov qib feem ntau ua rau kev txuag nqi:
- Simplified tsav circuits txo cov khoom suav
- Kev ua haujlwm siab dua txo cov kev xav tau cua txias
- Kev ntseeg siab dua txo cov nqi kho
- Qhov me me ua rau cov qauv tsim compact
8. Yav tom ntej Trends thiab kev txhim kho
Qhov zoo ntawm lub zog MOSFETs txuas ntxiv txhim kho nrog kev nce qib hauv kev siv tshuab:
Daim duab 7: Evolution thiab yav tom ntej tiam sis nyob rau hauv lub hwj chim MOSFET technology
