ncp1910 ON Semiconductor, ncp1910 Datasheet - Page 11

• Manufacturer Part Number: ncp1910
• Description: Ncp1910 High Performance Combo Controller For Atx Power Supplies
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
= 12 V unless otherwise noted)
LLC CONTROL SECTION
3. In normal operation, when the power supply is un−plugged, the bulk voltage goes down. At a first crossed level, the PG pin opens. Later,
4. Guaranteed by design.
DRIVE OUTPUT
PROTECTIONS
t
when the bulk crosses a second level, the LLC turns off. There is no timing link between these events, except the bulk capacitor discharge
slope. However, if for an unknown reason the PFC is disabled (fault, short−circuit), the PG pin immediately opens and if sufficient voltage
is still present on the bulk (e.g. in high line condition), the LLC will be disabled after a typical time of 5 ms.
BONOTOK
Symbol
V
I
HV,leak
I
R
R
BOadjH
V
V
BOadj
t
DT
BOK
t
T
T
LOH
LOL
CS1
CS2
CS
Lr
Lf
L
Output voltage rise−time @ C
Output voltage fall−time @ C
Source resistance
Sink resistance
Dead time, measured between 50% of the rise and fall edge
Leakage current on high voltage pins to GND (600 Vdc)
Input bias current, BOadj pin
BO comparator hysteresis
BO comparator Integrating Filter Time Constant from High to Low
BO comparator Integrating Filter Time Constant from Low to High
Current−sense pin level that resets the soft−start capacitor
Current−sense pin level that permanently latches off the circuit
Propagation delay from VCS1/2 activation to respective action
(For typical values T
L
L
= 1 nF, 10−90% of output signal
Rating
= 1 nF, 10−90% of output signal
http://onsemi.com
J
= 25°C, for min/max values T
11
22, 23, 24
23, 20
23, 20
23, 20
23, 20
23, 20
Pin
15
15
15
J
5
5
5
5
= −40°C to +125°C, Max T
0.95
1.42
Min
268
−
−
−
−
−
−
−
−
−
−
Typ
327
100
150
1.5
40
20
12
15
20
5
−
1
−
J
= 150°C, V
Max
1.05
1.58
386
500
26
11
−
−
5
−
−
−
−
Unit
mV
mA
nA
ns
ns
ns
ms
ms
ns
CC
W
W
V
V