OM5428P ETC1 [List of Unclassifed Manufacturers], OM5428P Datasheet - Page 4

• Manufacturer Part Number: OM5428P
• Description: General purpose triggering circuit
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

Integrated Electronic Solutions, Hendon, South Australia
5
5.1
6
2002 Nov 08
control input
pulse width
enable input
General purpose triggering circuit
PINNING INFORMATION
BLOCK DIAGRAM
negative
Pinning layout
supply
(Rz)
DIFFEN
XOUT
SDIS
XDIS
QC+
V EE
QC
PW
IC+
IC
PW
Fig.1 Pin configuration
16
11
1
2
4
1
5
6
7
8
3
external mains
detector output
resistor (Rs)
zero-crossing
DETECTOR
CROSSING
SUPPLY
ZERO-
OM5428
13
XOUT
RMNS
2
OM5428
external
resistor
DIFFEN
3
comparator non-
inverting output
16
15
14
13
12
11
10
9
v
cc
FLY
SAW
V EE
RMNS
XDIS
V
TRIG
AMPIN
Fig.2 Block diagram of the OM5428
pull up on
CC
QC+
pin IC+
4
comparator non-
inverting input
DIFFERENCE
REGULATOR
AMPLIFIER
IC+
common
5
supply
inverting input
comparator
12
V CC
IC
6
inverting output
comparator
pull down on
4
ready from
regulator
pin IC-
5.2
PW
XOUT
DIFFEN
QC+
IC+
IC
QC
SDIS
AMPIN
TRIG
V
V
RMNS
SAW
FLY
XDIS
SYMBOL
QC
7
EE
CC
Pin description
GENERATOR
SAWTOOTH
generator
sawtooth
RESET
input
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SAW
14
PIN
pull up
on pin
SAW
generator
sawtooth
amplifier
output
output
reset
pulse width control input
zero-crossing detector output
difference amplifier enable output
comparator non-inverting output
comparator non-inverting input
comparator inverting input
comparator inverting output
triac gate sense disable input
output stage input
output stage output
negative supply
positive supply
external power resistor
sawtooth generator trigger input
sawtooth generator output
zero crossing detector disable input
FLY
15
amplifier
output
inhibit
AMPLIFIER
OUTPUT
SENSE
GATE
DESCRIPTION
sense
gate
10
9
8
TRIG
AMPIN
SDIS
OM5428
inhibiting input
Data Sheet
gate sense
output stage
output stage
output
input