Controler turatie

[Vizitator cornelioan]

Salut tuturor! Am un Citrooen C5, la care nu mai merge ventilatia climatizarii,demontand modulul raspunzator cu asta, am gasit defect un tranzistor mosfet. Problema este ca nu reusesc sa dau de el la nici un magazin de componente. Este vorba de un W80NF55-08 fabricat de ST. Va rog frumos, daca ma poate ajuta cineva sa-l gasesc sau sa-mi dea un echivalent al lui. Va multumesc.

[Vizitator cornelioan]

Mai vin si cu niste specificatii tehnice date de producator, in speranta ca poate ma va ajuta cineva sa gasesc un echivalent.N-CHANNEL 55V - 0.0065W - 80A TO-247

STripFET? POWER MOSFET

(1) Starting Tj = 25°C, ID = 40A, VDD = 40V

(*) Current Limited by wire bonding

n TYPICAL RDS(on) = 0.0065W

n EXCEPTIONAL dv/dt CAPABILITY

n 100% AVALANCHE TESTED

n LOW THRESHOLD DRIVE

DESCRIPTION

This Power MOSFET is the latest development of

STMicroelectronics unique "Single Feature Size?"

strip-based process. The resulting transistor shows

extremely high packing density for low on-resistance,

rugged avalanche characteristics and less

critical alignment steps therefore a remarkable

manufacturing reproducibility.

APPLICATIONS

n DC-AC & DC-DC CONVERTERS

n HIGH CURRENT, HIGH SPEED SWITCHING

n SOLENOID AND RELAY DRIVERS

n MOTOR CONTROL, AUDIO AMPLIFIERS

ABSOLUTE MAXIMUM RATINGS

(l) Pulse width limited by safe operating area

TYPE VDSS RDS(on) ID

STW80NF55-08 55 V < 0.008 W 80 A

Symbol Parameter Value Unit

VDS Drain-source Voltage (VGS = 0) 55 V

VDGR Drain-gate Voltage (RGS = 20 kW) 55 V

VGS Gate- source Voltage ?20 V

ID (*) Drain Current (continuous) at TC = 25°C 80 A

ID Drain Current (continuous) at TC = 100°C 80 A

IDM (l) Drain Current (pulsed) 320 A

PTOT Total Dissipation at TC = 25°C 300 W

Derating Factor 2 W/°C

EAS (1) Single Pulse Avalanche Energy 870 mJ

Tstg Storage Temperature ?65 to 175 °C

Tj Max. Operating Junction Temperature 175 °C

TO-247

1

2

3

INTERNAL SCHEMATIC DIAGRAM

www.DataSheet4U.comTHERMAL DATA

ELECTRICAL CHARACTERISTICS (TCASE = 25 °C UNLESS OTHERWISE SPECIFIED)

OFF

ON (1)

DYNAMIC

Rthj-case Thermal Resistance Junction-case Max 0.5 °C/W

Rthj-amb Thermal Resistance Junction-ambient Max 62.5 °C/W

Tl Maximum Lead Temperature For Soldering Purpose 300 °C

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V(BR)DSS Drain-source

Breakdown Voltage

ID = 250 ?A, VGS = 0 55 V

IDSS Zero Gate Voltage

Drain Current (VGS = 0)

VDS = Max Rating 1 ?A

VDS = Max Rating, TC = 125 °C 10 ?A

IGSS Gate-body Leakage

Current (VDS = 0)

VGS = ?20V ?100 nA

Symbol Parameter Test Conditions Min. Typ. Max. Unit

VGS(th) Gate Threshold Voltage VDS = VGS, ID = 250?A 2 3 4 V

RDS(on) Static Drain-source On

Resistance

VGS = 10V, ID = 40 A 0.0065 0.008 W

Symbol Parameter Test Conditions Min. Typ. Max. Unit

gfs (1) Forward Transconductance VDS > 2.5 V, ID =18 A 20 S

Ciss Input Capacitance VDS = 25V, f = 1 MHz, VGS = 0 3850 pF

Coss Output Capacitance 800 pF

Crss

Reverse Transfer

Capacitance

250 pF

[niq_ro]

tinand cont ca pare a avea un rol obisnuit de mos-fet, desi in fatasheet e ceva "beton" (a se vedea http://www.st.com/stonline/products/lit ... /14511.pdf ) eu as incerca cu unul obisnuit, adica un MODSFET canal N cde 80A.. cere si tu asta la un magazin de componente electronice, eventual la un curent mai mic daca nu gasesti de 80...

[ianacosti]

Cred ca merge IRFZ 44 N.

[Vizitator cornelioan]

Va multumesc de raspunsuri.Se pare ca se gaseste ceva la 50A si cred caeste suficient.

[Vizitator cornelioan]

Optez si eu pentru IRFZ 44 N,si voi face o incercare cu el.Inca odata va multumesc

[Felis]

înainte sa mai arzi înca un mosfet ar fi bine sa vezi in ce stare e motorul de la aeroterma 99.9% din cazurile cand se arde controlorul de turatie sunt generate de blocarea sau rotirea ingreuiata a rotorului acelui motor ce duc la cresterea curentului exagerat prin regulator.Restul de cazuri sunt provocate tot de neindemanatici