Diodes AM4964 - Manual (Page 14)

AM4964
Document number: DS37241 Rev. 2 - 2
14 of 21
www.diodes.com
June 2014
© Diodes Incorporated
AM4964
A Product Line of
Diodes Incorporated
N
E
W
P
R
O
D
U
C
T
Applications Note
(cont.)
Some of typical application
performance curves based on circuits above are shown below (R1 to R6 open, R8=8kΩ, R9=150kΩ).
Output PWM Duty vs. Input PWM Duty with R7 (180k  ) Output PWM Duty vs. Input PWM Duty with R7 (390k  )
24 26 28 30 32 34 36 38 40 42 44 46
0
20
40
60
80
100
O
u
tp
u
t
D
u
ty
(%
)
Temperature ( o C)
R5=470K  , R7=150K  ,
R8=8.52K  , R9=130K  Input Duty
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
TH
TL
Output PWM Duty vs. Temperature
0 20 40 60 80 100
0
20
40
60
80
100
Ou
tpu
t
D
ut
y
Ga
p
(I
np
ut
D
ut
y
=10
0%
)
Low Temperature
High Temperature
O
u
tp
u
t
D
u
ty
G
a
p
(%
)
Input Duty (%)
R7=180k 
0 20 40 60 80 100
0
20
40
60
80
100
O
ut
pu
t Du
ty
G
ap
(In
pu
t Du
ty
=10
0%)
Low Temperature
High Temperature O
u
tp
u
t
D
u
ty
(%
)
Input Duty (%)
R7=390K 