NCP1379 ON Semiconductor, NCP1379 Datasheet - Page 3
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NCP1379
Manufacturer Part Number
NCP1379
Description
Quasi-Resonant Current-Mode Controller
Manufacturer
ON Semiconductor
Datasheet
1.NCP1379.pdf
(22 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NCP1379DR2G
Manufacturer:
ON Semiconductor
Quantity:
1 400
Part Number:
NCP1379DR2G
Manufacturer:
ON/安森美
Quantity:
20 000
Rsense
ZC D
La ux
CS
FB
Ct
Rpullup
VDD
ICt
VDD
/ 4
LE B 2 is shorter than LE B 1
I
peak(VCO)
LEB 2
LEB 1
10 V
ESD
C t s e tpoint
DRV
Discharge
= 17.5 % V
C t
SS end
Vth
SS end
V ILIMIT
3 ms blanking
ILIMIT
+
+
−
−
OPP
The 40 ms Time Out is active
only during s oft−s ta r t
SS end
INTERNAL CIRCUIT ARCHITECTURE
Soft-start
Figure 2. Internal Circuit Architecture
Time Out
Time Out
V CS(stop )
40 ms
5 ms
Soft-start end ? then 1
else 0
de ma g
LOGIC BLOCK
http://onsemi.com
−
+
+
−
+
−
VDD
PW Mreset
3
I pFl a g
Cs S top
S
R
DRV
Q
Q
BO r e se t
latch
Q
Q
gr a nd
reset
R
S
gr a nd
noise delay
reset
VDD
V
noi s e de l a y
CC
management
fa ul t
TIMER
Reset
Down
gr a nd
reset
Up
V CCstop
CsS top
BO r e se t
+
+
−
−
VBO
www.DataSheet4U.com
IpFlag
PW Mreset
VOVP
Vclamp
Rclamp
clamp
VDD
IBO
Vcc
DRV
GN D
OVP/BO
VCC
V cc aux
ga te
HV