IES5528 Hendon Semiconductors, IES5528 Datasheet - Page 7

• Manufacturer Part Number: IES5528
• Description: Phase Controller And Triac Triggering Ic
• Manufacturer: Hendon Semiconductors

8.1
8.2
2009 Nov 02, Revision 8.1
Sawtooth generator pulse width characteristics and component selection
Sawtooth generator repetition rate characteristics and component selection
Fig.4 Generated repetition rate based on selected values of R2 and C3.
Fig.3 Generated pulse width based on selected values of R2 and C3.
400
350
300
250
200
150
100
10000
50
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
0
0
0
500
500
1000
1000
Phase Controller and Triac Triggering IC
Sawtooth Repetition Rate
Sawtooth Pulse Width
Resistor R2 (KΩ)
Resistor R2 (KΩ)
7
1500
1500
2000
2000
t
pulse
=
2500
2500
------------------------------ - C 3
R 2
10000 R2
+
10000
Values
of C3
Values
of C3
10n
6n8
4n7
3n3
2n7
1n5
10n
6n8
4n7
3n3
2n7
1n5
⋅
1n
1n
3000
3000
⋅
⋅
ln
t
Product Specification
rep
⎛
⎜
⎜
⎜
⎝
IES5528
1
–
=
----------------------------------------------------- -
4.36
0.33 R2 C3
–
⋅
⎛
⎝
------------------------------ -
R 2
3.76
140000
⋅
+
10000
+
t
P W
⎞
⎠
⎞
⎟
⎟
⎟
⎠
s
s