NTD85N02RT4 ,Power Mosfet 85 A, 24 V, N-Channel DPAKELECTRICAL CHARACTERISTICS (T = 25°C Unless otherwise specified) JCharacteristics Symbol Min Typ Ma ..
NTD85N02RT4G ,Power MOSFET 85 Amps / 24 Volts N-Channel DPAKELECTRICAL CHARACTERISTICS (T = 25°C Unless otherwise specified) JCharacteristics Symbol Min Typ Ma ..
NTD95N02R ,Power MOSFET 24V, 95 A, N-Channel Single DPAKELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted)JParameter Symbol Test Condition Min Ty ..
NTD95N02RT4G , Power MOSFET 95 Amps, 24 Volts N−Channel DPAK
NTDV20N06LT4G , Power MOSFET 20 Amps, 60 Volts Logic Level, N−Channel DPAK
NTE0305MC , Isolated 1W Single Output SM DC/DC Converters
OUDH-SS-112D , 10 Amp Miniature, Sealed PC Board Relay
OV2640 , world smallest 2 megapixel CameraChip
OV2655 , high sensitivity 1/5-inch 2 megapixel CameraChip sensor
OV6680 , optimal low-light sensitivity and pixel performance for video conferencing cameras in 3G mobile phones
OV6680 , optimal low-light sensitivity and pixel performance for video conferencing cameras in 3G mobile phones
OV7411 , SINGLE-CHIP CMOS COLOR PAL CAMERA
NTD85N02R-001-NTD85N02RT4
Power Mosfet 85 A, 24 V, N-Channel DPAK
3R , DRAIN−TO−SOURCE RESISTANCE R , DRAIN−TO−SOURCE RESISTANCE () I , DRAIN CURRENT (AMPS)DS(on) DS(on) D(NORMALIZED)I , LEAKAGE (nA)DSSR , DRAIN−TO−SOURCE RESISTANCE ()DS(on)I , DRAIN CURRENT (AMPS)DNTD85N02RPOWER MOSFET SWITCHINGSwitching behavior is most easily modeled and predicted The capacitance (C ) is read from the capacitance curve atissby recognizing that the power MOSFET is charge a voltage corresponding to the off−state condition whencontrolled. The lengths of various switching intervals (t) calculating t and is read at a voltage corresponding to thed(on)are determined by how fast the FET input capacitance can on−state when calculating t .d(off)be charged by current from the generator. At high switching speeds, parasitic circuit elementscomplicate the analysis. The inductance of the MOSFETThe published capacitance data is difficult to use forsource lead, inside the package and in the circuit wiringcalculating rise and fall because drain−gate capacitancewhich is common to both the drain and gate current paths,varies greatly with applied voltage. Accordingly, gateproduces a voltage at the source which reduces the gate drivecharge data is used. In most cases, a satisfactory estimate ofcurrent. The voltage is determined by Ldi/dt, but since di/dtaverage input current (I ) can be made from aG(AV)is a function of drain current, the mathematical solution isrudimentary analysis of the drive circuit so thatcomplex. The MOSFET output capacitance alsot = Q/IG(AV)complicates the mathematics. And finally, MOSFETs havefinite internal gate resistance which effectively adds to theDuring the rise and fall time interval when switching aresistance of the driving source, but the internal resistanceresistive load, V remains virtually constant at a levelGSknown as the plateau voltage, V . Therefore, rise and fall is difficult to measure and, consequently, is not specified.SGPtimes may be approximated by the following: The resistive switching time variation versus gateresistance (Figure 9) shows how typical switchingt = Q x R /(V − V )r 2 G GG GSPperformance is affected by the parasitic circuit elements. Ift = Q x R /Vf 2 G GSPthe parasitics were not present, the slope of the curves wouldmaintain a value of unity regardless of the switching speed.whereThe circuit used to obtain the data is constructed to minimizeV = the gate drive voltage, which varies from zero to VGG GGcommon inductance in the drain and gate circuit loops andR = the gate drive resistanceGis believed readily achievable with board mountedand Q and V are read from the gate charge curve.2 GSP components. Most power electronic loads are inductive; thedata in the figure is taken with a resistive load, whichDuring the turn−on and turn−off delay times, gate current isapproximates an optimally snubbed inductive load. Powernot constant. The simplest calculation uses appropriateMOSFETs may be safely operated into an inductive load;values from the capacitance curves in a standard equation forhowever, snubbing reduces switching losses.voltage change in an RC network. The equations are:t = R C In [V /(V − V )]d(on) G iss GG GG GSPt = R C In (V /V )d(off) G iss GG GSP4800T = 25°CJ4000Ciss3200Crss2400 Ciss1600Coss800CrssV = 0 V V = 0 VDS GS01055 0 10 15 20V VGS DSGATE−TO−SOURCE OR DRAIN−TO−SOURCE VOLTAGE (VOLTS)Figure 7. Capacitance Variation
