NCP1288(2010) 데이터 시트보기 (PDF) - ON Semiconductor
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NCP1288 Datasheet PDF : 32 Pages
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NCP1288
ELECTRICAL CHARACTERISTICS (For typical values TJ = 25°C, for min/max values TJ = −40°C to +125°C, VHV = 120 V,
VCC = 11 V unless otherwise noted)
Characteristics
Test Condition
Symbol Min Typ Max Unit
CURRENT SENSE
Input Bias Current
Maximum Internal Current Setpoint
Threshold for Immediate Fault Protection Activation
Propagation Delay from VILIM detection to DRV off
Leading Edge Blanking Duration for VILIM
Leading Edge Blanking Duration for VCS(stop)
Slope of the Compensation Ramp
Soft−Start Duration
OVERPOWER COMPENSATION
VCS = 0.7 V
VFB > 3.5 V
VCS = VILIM
From 1st pulse to
VCS = VILIM
Ibias
VILIM
VCS(stop)
tdelay
tLEB
tBCS
Scomp(65kHz)
tSSTART
−
0.665
0.95
−
190
90
−
2.8
0.02
0.7
1.05
80
250
120
−32.5
4.0
−
0.735
1.15
110
310
150
−
5.2
mA
V
V
ns
ns
ns
mV / ms
ms
VHV to IOPC Conversion Ratio
Current flowing out of CS pin
FB voltage above which IOPC is applied
FB voltage below which IOPC = 0
Refresh period for dc operation
FEEDBACK
VHV = 125 V
VHV = 162 V
VHV = 325 V
VHV = VHV(OV2) − 5 V
KOPC
IOPC(125)
IOPC(162)
IOPC(325)
IOPC(max)
VFB(OPC)
VFB(OPCE)
tWD
−
0.5
− mA / V
−
0
−
mA
−
52
−
−
104
−
102 120 138
1.50 1.65 1.80
V
− 1.25 −
V
25
35
45
ms
Internal Pull−up Resistor
VFB to Internal Current Setpoint Division ratio
Internal Pull−up Voltage on the FB pin
OVERCURRENT PROTECTION
TJ = 25°C
RFB(up)
15
20
25
kW
KFB
4.7 5.0 5.3
−
VFB(ref)
4.3 5.0 5.7
V
Fault Timer Duration
From CS reaching VILIMIT to
tfault
DRV stop
64
78
98
ms
Autorecovery Mode Latch−off Time Duration
tautorec
1.0 1.4 1.8
s
6. Internal supply current only, current in FB pin not included (current flowing through GND pin only).
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