SPICE MODEL of PS2501-2 in SPICE PARK. English Version is http://www.spicepark.net. Japanese Version is http://www.spicepark.com by Bee Technologies.

1. Device Modeling Report
COMPONENTS: PHOTOCOUPLER
PART NUMBER: PS2501-2
MANUFACTURER: NEC
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

2. DIODE MODEL
Pspice model
Model description
Parameter
IS Saturation Current
N Emission Coefficient
RS Series Resistance
IKF High-injection Knee Current
CJO Zero-bias Junction Capacitance
M Junction Grading Coefficient
VJ Junction Potential
ISR Recombination Current Saturation Value
BV Reverse Breakdown Voltage(a positive value)
IBV Reverse Breakdown Current(a positive value)
TT Transit Time
BIPOLAR JUNCTION TRANSISTOR MODEL
Pspice
model Model description
parameter
NR Reverse Emission Coefficient
RB Base Resistance
RC Series Collector Resistance
CJE Zero-bias Emitter-Base Junction Capacitance
CJC Zero-bias Collector-Base Junction Capacitance
TF Forward Transit Time
TR Reverse Transit Time
VOLTAGE CONTROLLED VOLTAGE SOURCE MODEL(VCVS)
E<Name><(+)Node><(－)Node>VALUE={Expression}
E<Name><(+)Node><(－)Node>TABLE={Expression}
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

3. VOLTAGE CONTROLLED CURRENT SOURCE MODEL(VCCS)
E<Name><(+)Node><(－)Node>VALUE={Expression}
CURRENT CONTROLLED MODEL(W)
Pspice
model Model description
parameter
IOFF Controlling current to Off state
ION Controlling current to On state
ROFF Off Resistance
RON On Resistance
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

4. Input Device Forward Current Characteristics
Measurement
Simulation
Input Device Junction Capacitance Characteristics
Measurement
Simulation
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

5. Input Device Reverse Recovery Characteristics
Measurement
trj=102n(s)
trb=32n(s)
Conditions:Ifwd=Irev=0.04(A),Rl=50
Example
Relation between trj and trb
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

6. LED IV Curve Characteristics
Evaluation Circuit
U1
1 8
V3 2 7
0Vdc
3 6
4 5
V2 V1
0Vdc 5Vdc
PS2501-2
0 0
Simulation result
Simulation
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

7. Comparison Table
Vfwd(V)
Ifwd(mA) % Error
Measurement Simulation
0.05 0.924 0.927 0.325
0.10 0.956 0.958 0.209
0.20 0.990 0.988 -0.202
0.50 1.032 1.029 -0.291
1.00 1.062 1.060 -0.188
2.00 1.094 1.092 -0.183
5.00 1.134 1.135 0.088
10.00 1.166 1.169 0.257
20.00 1.206 1.208 0.166
50.00 1.274 1.273 -0.078
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

8. LED IV Curve Characteristics Reference
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

9. Transistor Saturation Characteristics
Evaluation Circuit
U1
1 8
2 7
3 6
4 5
IF IC
10mAdc PS2501-2 2mAdc
0 0
Simulation result
Simulation
Comparison Table
Measurement Simulation % Error
Vce(sat) (V) 0.3 0.299 -0.333
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

10. CTR(Current Transfer Ratio) Characteristics
Evaluation Circuit
V2 U1 V3
1 8
0Vdc 2 7 0Vdc
3 6
4 5
VCE
IF 5Vdc
5mAdc PS2501-2
0 0
Simulation result
Simulation
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

11. Comparison Table
CTR(%)
If(mA) % Error
Measurement Simulation
0.1 27.0 26.467 -1.974
0.2 59.0 60.415 2.398
0.5 98.2 103.219 5.111
1.0 129.0 134.764 4.468
2.0 158.0 165.336 4.643
5.0 207.0 206.938 -0.030
10.0 205.0 200.280 -2.302
20.0 150.0 148.833 -0.778
50.0 80.0 80.794 0.992
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

12. Switching Time Characteristics
Evaluation Circuit
U1
1 8
2 7
PER = 1000u
PW = 100u 3 6
TF = 10n
TR = 10n 4 5
TD = 0 VCE
I2 = 5m R2 5Vdc
I1 = 0 IF PS2501-2 R1
50 1K
0 0
Simulation result
Simulation
Comparison Table
IF=5mA, Vcc=5V,RL=1K Measurement Simulation % Error
tr(us) 3.4 3.405 0.147
tf (us) 17.0 16.277 -4.253
ts (us) 20.0 19.954 -0.230
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

13. Switching Time Characteristics Reference
tr=3.4(us)
tf=17(us)
ts=20(us)
Conditions:IF=5mA,Vcc=5V
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005