This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC27714 Errors using Orcad Pspice

Other Parts Discussed in Thread: UCC25600, UCC27714

Hi,

I'm trying to simulate a half bridge LLC using the UCC25600 (PWM) and the UCC27714 (driver).

The  UCC25600 is simulating fine.

The UCC27714 gives errors.

It appears Orcad Pspice does not like No Connects (NC). It give errors indicating nodes that are not connected.

I tried connecting these pins to ground via 1K and 100K. With pull down resistors I get the following error. Please help:

ERROR -- Less than 2 connections at node N19849
ERROR -- Less than 2 connections at node N19856
ERROR -- Less than 2 connections at node N19863
ERROR -- Less than 2 connections at node N19987
ERROR -- Less than 2 connections at node N21422

Here is the COMPLET Simulator Output file:


**** 01/12/16 16:07:06 ******* PSpice 16.3.0 (June 2009) ****** ID# 0 ********

** Profile: "SCHEMATIC1-09JAN2016" [ C:\Users\pulis\Documents\Pspice\test 09jan2016-pspicefiles\schematic1\09jan2016.sim ]


**** CIRCUIT DESCRIPTION


******************************************************************************


** Creating circuit file "09JAN2016.cir"
** WARNING: THIS AUTOMATICALLY GENERATED FILE MAY BE OVERWRITTEN BY SUBSEQUENT SIMULATIONS

*Libraries:
* Profile Libraries :
* Local Libraries :
.LIB "C:/Cadence/SPB_16.3/tools/capture/library/pspice/UserLib/TI/UCC27714/UCC27714_TRANS.LIB"
.LIB "C:/Cadence/SPB_16.3/tools/capture/library/pspice/UserLib/ucc25600_trans.lib"
* From [PSPICE NETLIST] section of C:\Cadence\SPB_16.3\tools\PSpice\PSpice.ini file:
.lib "C:\Cadence\SPB_16.3\tools\pspice\library\nom.lib"

*Analysis directives:
.TRAN 0 50us 0
.PROBE V(alias(*)) I(alias(*)) W(alias(*)) D(alias(*)) NOISE(alias(*))
.INC "..\SCHEMATIC1.net"

**** INCLUDING SCHEMATIC1.net ****
* source TEST 09JAN2016
C_C5 N07514 0 47nF TC=0,0
R_R9 N07538 0 26K TC=0,0
V_V5 N07410 0 12Vdc
R_R10 N07530 0 1K TC=0,0
X_U1 N07538 0 N07530 N07514 N07410 N11318 N11330 0 UCC25600_TRANS
L_L1 N11318 N11330 1000mH
Kn_K1 L_L1 L_L2
+ L_L3 .999
L_L2 0 N14187 1000mH
L_L3 N14177 0 1000mH
R_R6 N12823 N14177 10 TC=0,0
R_R5 N12811 N14187 10 TC=0,0
R_R7 N12811 0 10K TC=0,0
R_R8 N12823 0 10K TC=0,0
X_U2 N18966 N18283 N18723 0 N19863 N19196 N19448 N19186 N19729 0 N19856
+ N19849 N19987 N21422 UCC27714_TRANS PARAMS: DLY_MATCH=0 EN_HYS=0.7 EN_TH=2.3
+ HILI_HYS=0.7 HILI_TH=2.3 VDD_HYS=0.5 VDD_TH=9.1 VHBHS_HYS=1.0 VHBHS_TH=8.3
+ MIPW=40 TPDLH_HL=20
R_R11 N18395 0 26K TC=0,0
C_C10 N18365 0 47nF TC=0,0
V_V6 N18307 0 12Vdc
X_U3 N18395 0 N18385 N18365 N18307 N18283 N18723 0 UCC25600_TRANS
R_R12 N18385 0 1K TC=0,0
V_V7 N18966 0 12Vdc
V_V8 N19196 N19186 12Vdc
R_R13 N19186 0 26K TC=0,0
R_R16 N19580 0 10K TC=0,0
R_R17 N20586 0 10K TC=0,0
R_R15 N20586 N19729 10 TC=0,0
R_R14 N19580 N19448 10 TC=0,0
R_R18 N19849 0 100K TC=0,0
R_R19 N19856 0 100K TC=0,0
R_R20 N19863 0 100K TC=0,0
R_R21 N19987 0 100K TC=0,0
R_R23 N11330 0 10K TC=0,0
R_R22 N21422 0 100K TC=0,0

**** RESUMING 09JAN2016.cir ****
.END

ERROR -- Less than 2 connections at node N19849
ERROR -- Less than 2 connections at node N19856
ERROR -- Less than 2 connections at node N19863
ERROR -- Less than 2 connections at node N19987
ERROR -- Less than 2 connections at node N21422