1. Ts'ebetso e laoloang ke Voltage
Ho fapana le li-bipolar junction transistors (BJTs) tseo e leng lisebelisoa tse laoloang hajoale, li-MOSFET tsa matla li laoloa ke motlakase. Tšobotsi ena ea mantlha e fana ka melemo e mengata ea bohlokoa:
- Litlhoko tsa ho khanna liheke tse nolofalitsoeng
- Tšebeliso e tlase ea matla ho potoloho ea taolo
- Bokhoni ba ho fetola kapele
- Ha ho mathata a bobeli a karohano
2. Superior Switching Performance
Li-MOSFET tsa matla li ipabola lits'ebetsong tse feto-fetohang hangata, li fana ka melemo e mengata ho feta li-BJT tsa setso:
Paramethara | Matla MOSFET | BJT |
---|---|---|
Ho fetola Lebelo | Ka potlako haholo (ns range) | E itekanetseng (μs) |
Ho Fetola Litahlehelo | Tlase | Phahameng |
Maqhubu a ho Fetola a Phahameng | > 1 MHz | ~ 100 kHz |
3. Litšobotsi tsa Thermal
Li-MOSFET tsa matla li bonts'a litšobotsi tse phahameng tsa mocheso tse tlatsetsang ho ts'epahala le ts'ebetso ea tsona:
- Positive mocheso coefficient e thibela ho baleha ha mocheso
- Ho arolelana hona joale ho betere ts'ebetsong e tšoanang
- Botsitso bo phahameng ba mocheso
- Sebaka se pharaletseng se sireletsehileng sa ts'ebetso (SOA)
4. Khanyetso e tlase ea Naha
Li-MOSFET tsa sejoale-joale tsa matla li fihlella khanyetso e tlase haholo ea boemo (RDS(on)), e lebisang melemong e mengata:
5. Bokhoni bo Tšoanang
Li-MOSFET tsa matla li ka hokahanngoa habonolo ka ho bapisa ho sebetsana le maqhubu a phahameng, ka lebaka la mocheso oa tsona o motle:
6. Ruggedness le Tšepahala
Power MOSFETs e fana ka likarolo tse ntle haholo tsa ho sesa le ho ts'epahala:
- Ha ho ketsahalo ea bobeli ea karohano
- Diode ea tlhaho ea 'mele bakeng sa ts'ireletso ea motlakase e ka morao
- Bokhoni bo botle ba avalanche
- Bokhoni bo phahameng ba dV/dt
7. Litšenyehelo-Ka katleho
Leha li-MOSFET tsa matla a motho ka mong li ka ba le litšenyehelo tse holimo ha li bapisoa le li-BJT, melemo ea tsona e akaretsang hangata e baka ho baballa litšenyehelo:
- Li-circuits tsa drive tse nolofalitsoeng li fokotsa palo ea likarolo
- Bokhoni bo phahameng bo fokotsa litlhoko tsa ho pholisa
- Ho tšepahala ho phahameng ho fokotsa litšenyehelo tsa tlhokomelo
- Boholo bo bonyenyane bo nolofalletsa meralo e kopaneng
8. Mekhoa ea Kamoso le Lintlafatso
Melemo ea matla a MOSFET a tsoela pele ho ntlafala ka tsoelopele ea theknoloji: