Other Parts Discussed in Thread: ISO120
This is Takeuchi, D-CLEW Technologies,
Thank you for your help.
Please help me regarding ISO121 SPICE Model
downloaded from TI website.
Using ISO121 or 124,We expect that minus
DC output control(0 -75V) by DC voltage(0 +10V)
of different common
So We apply minus voltage GND2 and COM2,
and expected Vout voltage same as the
Vin voltage in PSPICE simulation.
But result is that no tracing Vout voltage
when the GND2/COM2 voltage is under -13V.
(Fm 0 to -12V is OK.)
Is it spice model matter or something
wrong with my schematics?
Please find attached pdf file and SPICE
description.
Best Regards,
ISO120X.sp.txt
**** 03/29/17 15:46:33 ***** PSpice 16.6.0 (October 2012) ***** ID# 0 ******** ** Profile: "SCHEMATIC1-ISAMP" [ C:\Users\TAKEUCHI\04_cocoon\isoamp-pspicefiles\schematic1\isamp.sim ] **** CIRCUIT DESCRIPTION ****************************************************************************** ** Creating circuit file "ISAMP.cir" ** WARNING: THIS AUTOMATICALLY GENERATED FILE MAY BE OVERWRITTEN BY SUBSEQUENT SIMULATIONS *Libraries: * Profile Libraries : * Local Libraries : .INC "C:/Users/TAKEUCHI/documents/pspice_env/lib/iso121/iso120x.lib" * From [PSPICE NETLIST] section of C:\SPB_Data\cdssetup\OrCAD_PSpice/16.6.0/PSpice.ini file: **** INCLUDING iso120x.lib **** * ISO120X SPICE MACROMODEL-- Copyright 1990 Burr-Brown Corp. * * REV.B 6/11/92 BCB, adjusted Iq to PDS typ, added Vos, adjusted output * swing to PDS typ, adjusted barrier impedance * *----------------------------------------------------------------------------- * This library of models is being supplied to users as an aid to circuit * designs. While it reflects reasonably close similarity to the actual device * in terms of performance, it is not suggested as a replacement for * breadboarding. Simulation should be used as a forerunner or a supplement to * traditional lab testing. * * Users should very carefully note the following factors regarding this * model: * * To help designers working with the IS0120 isolation amplifiers, * a Spice listing for an equivalent circuit was developed (the listing * for the actual circuit is extremely long). Also, owing to the digital * transmission of the signal across the barrier, the listing for the * actual circuit could only be run with transient analysis, which would * be impractical for an application circuit. The equivalent circuit * listing, though, should be helpful. * The equivalent circuit simulates both quiescent and output loading. * The model includes the output voltage swing and current limit, the * bandwidth, and the input and output impedance limits. It doesn't * simulate synchronization, though, nor the notched response. The macro * circuit may be run with ac, dc, or transient analysis. * * While reasonable care has been taken in their preparation, we cannot * be responsible for correct application on any and all computer * systems. * * Model users are hereby notified that these models are supplied * "as is", with no direct or implied responsibility on the part of * Burr-Brown for their operation within a customer circuit or system. * Further, Burr-Brown Corporation reserves the right to change these * models without prior notice. * * In all cases, the current data sheet information for a given real * device is your final design guideline, and is the only actual * performance guarantee. * *----------------------------------------------------------------------------- * CONNECTIONS: * +VS1 * | -VS1 * | | COM2 * | | | VOUT * | | | | VOUT SENSE * | | | | | GND2 * | | | | | | C2H * | | | | | | | C2L * | | | | | | | | +VS2 * | | | | | | | | | -VS2 * | | | | | | | | | | COM1 * | | | | | | | | | | | VIN * | | | | | | | | | | | | GND1 * | | | | | | | | | | | | | *.SUBCKT ISO120X 3 4 9 10 11 12 13 14 15 16 21 23 24 * .SUBCKT ISO120X VS1P VS1M COM2 VOUT VSENSE GND2 C2H C2L VS2P VS2M COM1 VIN GND1 * RDMY01 VS1P 3 0.01 RDMY02 VS1M 4 0.01 RDMY03 COM2 9 0.01 RDMY04 VOUT 10 0.01 RDMY05 VSENSE 11 0.01 RDMY06 GND2 12 0.01 RDMY07 C2H 13 0.01 RDMY08 C2L 14 0.01 RDMY09 VS2P 15 0.01 RDMY00 VS2M 16 0.01 RDMY11 COM1 21 0.01 RDMY12 VIN 23 0.01 RDMY13 GND1 24 0.01 * * NOTE PINS 1, 2, AND 22 (C1H. C1L AND EXT OSC ARE NOT USED * POWER SUPPLY OUIESCENT CURRENTS * I1 3 24 4.0E-3 I2 24 4 4.0E-3 I3 15 12 4.5E-3 I4 12 16 4.5E-3 * *INPUT SECTION * VOS 23 60 5E-3 R1 60 50 200E3 R2 50 51 200E3 E1 51 21 21 50 100E3 E2 52 9 51 21 1 * *OUTPUT SECTION * R3 52 13 200E3 R4 13 11 200E3 R5 10 12 20E3 C1 13 14 150E-12 E3 14 12 9 13 1.6E3 E4 54 12 14 12 6.28 Q1 55 55 54 N Q2 56 56 54 P Q3 57 55 10 N Q4 58 56 10 P .MODEL N NPN BF=100 .MODEL P PNP BF=100 V1 15 57 2.5 V2 58 16 2.5 I5 15 55 250E-6 I6 56 16 250E-6 * *BARRIER IMPEDANCE * R6 24 12 100E12 C2 24 12 2E-12 * *REFERENCE TO NODE 0 NEEDED BY SOME VERSIONS OF SPICE * R7 23 0 100E9 .ENDS **** RESUMING ISAMP.cir **** .lib "nom.lib" *Analysis directives: .TRAN 0 30m 0 .OPTIONS ADVCONV .PROBE64 V(*) I(alias(*)) W(alias(*)) D(alias(*)) NOISE(alias(*)) .INC "..\SCHEMATIC1.net" **** INCLUDING SCHEMATIC1.net **** * source ISOAMP X_U1 N08229 N08035 N00613 N00939 N00939 N00613 N01583 N001477 N08231 + N08174 0 N00657 0 ISO120X V_V1 0 N08035 15Vdc V_V2 0 N08174 15Vdc V_V3 N08229 0 15Vdc V_V4 N08231 0 15Vdc C_C1 N001477 N01583 0.022u TC=0,0 R_R1 N00939 N00613 1000k TC=0,0 C_C2 N08174 N00613 1u TC=0,0 C_C3 N08231 N00613 1u TC=0,0 C_C4 0 N08035 1u TC=0,0 C_C5 N08229 0 1u TC=0,0 V_V12 0 N00613 13Vdc V_V14 N00657 0 +PULSE 0 10 10m 0 0 10m 10
