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SIMPLIS Reference Manual
of the transistor switch in volts. It is the voltage across the
transistor switch when it is saturated and the current through it is
negligibly small. It is a positive number for VCQPOS-type and
ICQPOS-type transistor switches and it is a negative number for
VCQNEG-type and ICQNEG-type transistor switches,
RSAT=
is the five-character keyword "RSAT="
rsat
is a positive number which defines the saturation resistance in
ohms of the transistor switch
ROFF=
is the five-character keyword "ROFF="
roff
is a positive number which defines the leakage resistance of the
switch in ohms when it is at the open state. It must be larger than
rsat
GAIN=
is the five-character keyword "GAIN="
gain
is a positive floating-point number which defines the gain of the
transistor switch when the parameter LEVEL is assigned a value
above 1. Its value is ignored when LEVEL is assigned a value of
1
TH=
is the three-character keyword "TH="
threshold
is a floating-point number which defines the threshold value of
the controlling signal. Together with hystwd, it determines the
values at which the transistor switch will be changed from an
OPEN state to a CLOSE state and vice versa. It is measured in
volts for VCQPOS- and VCQNEG-type switches and measured
in amperes for ICQPOS- and ICQNEG-type switches
HYSTWD=
is the seven-character keyword "HYSTWD="
hystwd
is a positive floating-point number which defines the hysteresis
width of the controlling signal. It has the same unit of
measurement as that of threshold
LOGIC=
is the six-character keyword "LOGIC="
POS
is the three-character keyword "POS"
NEG
is the three-character keyword "NEG",
LEVEL=
is the six-character keyword "LEVEL="
1
is the integer 1
2
is the integer 2
If the model type is VCQPOS or VCQNEG, the controlling signal cs(t) for the simple
transistor switch is the voltage of a pair of controlling nodes or the branch voltage of a
controlling device. If the model type is ICQPOS or ICQNEG, the controlling signal
cs(t) for the simple transistor switch is the branch current of a controlling device.
For model types VCQPOS and ICQPOS, the voltage across the transistor switch,
measured as the voltage of the positive node with respect to the voltage of the negative
node, assumes nonnegative values under normal operation like an NPN bipolar
transistor and an N-channel MOSFET. For model types VCQNEG and ICQNEG, the
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