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DAP018 Datasheet(PDF) 4 Page - ON Semiconductor

Part # DAP018
Description  PWM Current-Mode Controller for High-Power Universal Off-Line Supplies
PDF  28 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

DAP018 Datasheet(HTML) 4 Page - ON Semiconductor

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DAP018A/B/C/D/F
http://onsemi.com
4
1
2
Latch
+
-
S
Q
Q
R
+
Vlatch
+
-
fault
VCC and Logic
Management
5 V on
VCC Reset
Power
on reset
VCCON
VCC(min)
VCClatch
+
+
-
IC1
HV
14
IpFlag
Fault
13
12
11 BO
10 VCC
9 Drv
VDD
65/100 kHz
Clock
S
Q
Q
R
+
-
5 ms
SS
IpFlag
Rramp
6
FB
VDD
RFB
7
CS
LEB
8 GND
+
-
Vskip
5
Fold
Ifold
VDD
+
2.iCjit
+
-
iCjit
VDD
Frequency
Modulation
+
Vtimfault
IpFlag
Power On
Reset
VDD
Itim
4
Jitter
3
Timer
Figure 2. Internal Circuit Architecture
Vfold
/4.2
/4.2
-
+
+
Frequency
Foldback
+
-
+
OPP
Soft−start ended?
Yes = 1, No = 0
VOTP
IOTP
from fault
in OCP
latched versions
20 ms time
constant
5 V reset
BO release
(B & D)
Skip
Standby?
→ bias
reduction
The soft−start is activated during:
− the startup sequence
− the auto−recovery burst mode
− a brown−out release (B & D)
VFB/4.2 > Vset > Vfold/4.2
VOPP
Vlimit + VOPP
+
Vlimit
Clamp
BO (dble
hiccup reset)
+
-
VBO
+
IBO
B and D versions
turned
off when
BO ok
VDD
Vfold
+
BO ok
20 ms time
constant
NC
OTP



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