Dual N-Channel 30-V (D-S) MOSFET CHARACTERISTICS N-Channel V
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SPICE Device Model Si4944DY
Dual N-Channel 30-V (D-S) MOSFET
CHARACTERISTICS
N-Channel Vertical DMOS Macro Model (Model Subcircuit) Level Apply both Linear Switching Application Accurate over 125°C Temperature Range Model Gate Charge, Transient, Diode Reverse Recovery Characteristics
DESCRIPTION
attached spice model describes typical electrical characteristics n-channel vertical DMOS. subcircuit mode extracted optimized over 125°C temperature ranges under pulsed 0-to-10V gate drive. saturated output impedance best gate bias near threshold voltage. novel gate-to-drain feedback capacitance network used model gate charge characteristics while avoiding convergence difficulties switched model. model parameter values optimized provide best measured electrical data intended exact physical interpretation device.
SUBCIRCUIT MODEL SCHEMATIC
This document intended SPICE modeling guideline does constitute commercial product data sheet. Designers should refer appropriate data sheet same number guaranteed specification limits. Document Number: 72577 16-Oct-03 www.vishay.com
SPICE Device Model Si4944DY SPECIFICATIONS 25°C UNLESS OTHERWISE NOTED) Parameter Static
Gate Threshold Voltage On-State Drain Current
Symbol
Test Conditions
Simulated Data
0.0074 0.015 0.83
Measured Data
Unit
VGS(th) ID(on) rDS(on)
VGS, 250µA 10V, 12.2A 4.5V, 9.4A 10V, 12.2A 1.9A,
0.0075 0.013 0.80
Drain-Source On-State Resistancea Forward Transconductancea Forward Voltagea
Dynamic
Total Gate Charge Gate-Source Charge Gate-Drain Charge Turn-On Delay Time Rise Time Turn-Off Delay Time Fall Time
td(on) td(off) 15V, VGEN 10V, 15V, 4.5V, 12.2A
13.5
Notes Pulse test; pulse width duty cycle Guaranteed design, subject production testing.
www.vishay.com
Document Number: 72577 16-Oct-03
SPICE Device Model Si4944DY
COMPARISON MODEL WITH MEASURED DATA (TJ=25°C UNLESS OTHERWISE NOTED)
Document Number: 72577 16-Oct-03
www.vishay.com
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