4. 4
ABM のデバイスモデリング
[ 事例 ] デジタル素子
Copyright (C) Marutsuelec 2016
AND2_ABM
I N +
I N -
O U T +
O U T -
E 1
I F ( V ( 1 ) > 1 . 0 8 & V ( 2 ) > 1 . 0 8 , { V O H } , { V O L } )
E V A L U E
R 1
1 0
C 1
1 0 p
000
3
1
2
PARAMETERS:
V O L = 0V O H = 2 . 5
I N +
I N -
O U T +
O U T -
E 2
I F ( V ( 1 ) > 1 . 0 8 , { V O L } , { V O H } )
E V A L U E
R 2
1 0
C 2
1 0 p
000
1 2
PARAMETERS:
V O L = 0V O H = 2 . 5
INV_ABM
端子 1 端子 2 端子 3
H H H
L H L
H L L
L L L
端子 1 端子 2
H L
L H
5. 5
1.PWM IC のデバイスモデリン
グ
4INPUT NOR
GATE
4INPUT NOR
GATE
RSQB Flip
Flop
RSQB Flip
Flop
SRQ Flip FlopSRQ Flip Flop
2INPUT
COMPARATOR
2INPUT
COMPARATOR
OVPOVP
Oscillato
r
Oscillato
r
REFERENC
E
REFERENC
E
DelayDelay
UVLOUVLO
Start
Up
Start
Up
3INPUT
COMPARATOR
3INPUT
COMPARATOR
2INPUT OR
GATE
2INPUT OR
GATE
Output DriveOutput Drive
HYSTERESIS
COMPARATOR
HYSTERESIS
COMPARATOR
Current Mode PWM Control
Low Operating Current Max: 4m[A]
UVLO:12[V]/8[V]
Soft Start Function
Over Voltage Protection 19[V]
Copyright (C) Marutsuelec 2016
6. R 1
1 0
R 2
1 0 0 M E G
R 3
1 0 0 M E G
00
R S Q B _ F lip _ F lo p _ S
R S Q B _ F lip _ F lo p _ R
I N +
I N -
O U T +
O U T -
E 1
if ( ( V ( R S Q B _ F lip _ F lo p _ R ) > 4 & V ( R S Q B _ F lip _ F lo p _ S ) < 1 ) , 5 , ( if ( ( V ( R S Q B _ F lip _ F lo p _ R ) < 1 & V ( R S Q B _ F lip _ F lo p _ S ) > 4 ) , 0 , V ( R S Q B _ F lip _ F lo p _ Q B ) ) ) )
E V A L U E
0
C 1
1 0 p
I C = 0
1
R S Q B _ F lip _ F lo p _ Q B
R 4
1
0
RSQB Flip Flop
V 1
T D = 0
T F = 1 0 u
P W = 1 0 n
P E R = 2 0 . 0 1 u
V 1 = 0
T R = 1 0 u
V 2 = 5
V 2
T D = 1 0 u
T F = 1 0 u
P W = 1 0 n
P E R = 2 0 . 0 1 u
V 1 = 0
T R = 1 0 u
V 2 = 5
00
V
V
V
1.PWM IC のデバイスモデリング
1.6 RSQB Flip Flop
等価回路図
入力 出力
S R QB
0 0 保持
0 1 1
1 0 0
1 1 禁止
真理値表
6
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