The document presents a comprehensive device modeling report for a photocoupler component, specifically the part number PC356NT manufactured by Sharp Bee Technologies Inc. It includes detailed specifications and characteristics, including diode and BJT model parameters, simulation results, and comparison tables for forward and reverse current behaviors, as well as switching characteristics. Various simulation results show the accuracy and performance metrics, with attention given to current transfer ratio and saturation characteristics.

1. Device Modeling Report
COMPONENTS:PHOTOCOUPLER
PART NUMBER:PC356NT
MANUFACTURER: SHARP
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

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. 2004

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. 2004

4. Input Device Forward Current Characteristics
Measurement
Simulation
Input Device Junction Capacitance Characteristics
Measurement
Simulation
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

5. Input Device Reverse Recovery Characteristics
Measurement
trj=212n(s)
trb=200n(s)
Conditions:Ifwd=Irev=0.04(A),Rl=50
Example
Relation between trj and trb
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

6. LED IV Curve Characteristics
Evaluation Circuit
U1
1 4
A C
I1 V1
2Vdc
0Adc 2 3
K E
PC356NT
0 0
Simulation result
Simulation
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

7. Comparison Table
Vfwd(V)
Ifwd(A) % Error
Measurement Simulation
0.001 1.05 1.05 0
0.002 1.09 1.0859 -0.376
0.005 1.14 1.1366 -0.298
0.01 1.185 1.1822 -0.236
0.02 1.24 1.2409 0.073
0.05 1.37 1.3637 -0.460
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

8. Transistor Saturation Characteristics
Evaluation Circuit
U1
1 4
A C
I1
2 3 I2
K E
20mAdc
PC356NT
Simulation 1mAdc
0 0
Simulation result
Simulation
Comparison Table
Measurement Simulation % Error
Vce(sat) (V) 0.2 0.2 0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

9. CTR(Current Transfer Ratio) Characteristics
Evaluation Circuit
V2 V3
0Vdc 0Vdc
U1
1 4
A C V1
I1 5Vdc
20mAdc 2 3
K E
PC356NT
0 0
Simulation result
Simulation
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

10. Rise Curve Table
CTR(%)
If(mA) % Error
Measurement Simulation
1 180 182.194 1.219
2 255 247.54 -2.925
3 295 285.627 -3.177
4 325 312.588 -3.819
5 345 333.459 -3.345
6 350 350.481 0.137
7 365 364.714 -0.078
Fall Curve Table
CTR(%)
If(mA) % Error
Measurement Simulation
7 365 364.714 -0.078
8 350 341.227 -2.507
10 310 305.071 -1.590
20 200 194.510 -2.745
30 130 129.686 -0.242
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004

11. Switching Time Characteristics
Evaluation Circuit
V2
0Vdc
R1
100
U1
1 4
A C
I1
TD = 0 2 3
TF = 10n K E V1
PW = 20u 2Vdc
PC356NT
PER = 500u
I1 = 0
I2 = 20m
TR = 10n
0 0
Simulation result
Simulation
Comparison Table
Vcc=2V,IC=2mA,RL=100 Measurement Simulation % Error
Ts (us) 1.2 1.2151 1.258
Tf (us) 8 8.1518 1.898
All Rights Reserved Copyright (c) Bee Technologies Inc. 2004