SI7818DN

SPICE Device Model Si7818DN Vishay Siliconix N-Channel 150-V (D-S) MOSFET CHARACTERISTICS • N-Channel Vertical DMOS • Macro Model (Model Subcircuit) • Level 3 MOS • Apply for both Linear and Switching Application • Accurate over the −55 to 125°C Temperature Range • Model the Gate Charge, Transient, and Diode Reverse Recovery Characteristics DESCRIPTION The attached spice model describes the typical electrical characteristics of the n-channel vertical DMOS. The subcircuit model is extracted and optimized over the −55 to 125°C temperature ranges under the pulsed 0-V to 10-V gate drive. The saturated output impedance is best fit at the gate bias near the threshold voltage. A novel gate-to-drain feedback capacitance network is used to model the gate charge characteristics while avoiding convergence difficulties of the switched Cgd model. All model parameter values are optimized to provide a best fit to the measured electrical data and are not intended as an exact physical interpretation of the device. SUBCIRCUIT MODEL SCHEMATIC This document is intended as a SPICE modeling guideline and does not constitute a commercial product data sheet. Designers should refer to the appropriate data sheet of the same number for guaranteed specification limits. Document Number: 73336 S-50493Rev. A, 21-Mar-05 www.vishay.com 1 SPICE Device Model Si7818DN Vishay Siliconix SPECIFICATIONS (TJ = 25°C UNLESS OTHERWISE NOTED) Parameter Static Gate Threshold Voltage On-State Drain Current a Symbol Test Condition Simulated Data 1.8 46 0.107 0.121 9 0.82 Measured Data Unit VGS(th) ID(on) rDS(on) gfs VSD VDS = VGS, ID = 250 µA VDS ≥ 5 V, VGS = 10 V VGS = 10 V, ID = 3.4 A VGS = 6 V, ID = 3.3 A VDS = 15 V, ID = 3.4 A IS = 3.2 A, VGS = 0 V V A 0.112 0.117 17 0.78 Ω S V Drain-Source On-State Resistance a Forward Transconductance a Diode Forward Voltage a Dynamic b Total Gate Charge Gate-Source Charge Gate-Drain Charge Qg Qgs Qgd VDS = 75 V, VGS = 10 V, ID = 3.4 A 16 2.7 4.8 20 2.7 4.8 nC Notes a. Pulse test; pulse width ≤ 300 µs, duty cycle ≤ 2%. b. Guaranteed by design, not subject to production testing. www.vishay.com 2 Document Number: 73336 S-50493Rev. A, 21-Mar-05 SPICE Device Model Si7818DN Vishay Siliconix COMPARISON OF MODEL WITH MEASURED DATA (TJ=25°C UNLESS OTHERWISE NOTED) Document Number: 73336 S-50493Rev. A, 21-Mar-05 www.vishay.com 3 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1