NCP1615(2013) Просмотр технического описания (PDF) - ON Semiconductor
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NCP1615 Datasheet PDF : 44 Pages
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NCP1615
Table 4. ELECTRICAL CHARACTERISTICS (VCC = 15 V, VHV = 120 V, VFB = 2.4 V, RHVFB = 200 kW, VHVFB = 20 V, CVControl =
10 nF, VFFcontrol = 2.6 V, VZCD/CS = 0 V, RZCD/CS = 3 kW, VFOVPBUV = 2.4 V, VSTDBY = 1 V, VRestart = 1 V, VPSTimer = 0 V, VFault = open,
VPFCOK = open, CDRV = 1 nF, for typical values TJ = 25°C, for min/max values, TJ is −40°C to 125°C, unless otherwise noted)
Characteristics
Conditions
Symbol
Min Typ Max Unit
ZERO CURRENT DETECTION
Missing Valley Timeout Timer
Measured after last ZCD transition
Pull−Up Current Source
Detects open pin fault.
Source Current for CS/ZCD Impedance Testing
Pulls up at the end of toff1
CURRENT CONTROLLED FREQUENCY FOLDBACK
ttout
ICS/ZCD1
ICS/ZCD2
20
30
50
ms
–
1
–
mA
–
250
–
mA
Dead Time
VFFCntrol = 2.6 V
VFFCntrol = 1.75 V
VFFCntrol = 1.0 V
tDT1
–
–
0
ms
tDT2
4.5 6.5 7.5
tDT3
11
13
15
FFcontrol Pin Current
VHV = 162.5V, VControl = VControl(MAX)
VHV = 325 V, VControl = VControl(MAX)
IDT1
IDT2
180 200 220 mA
92 103 114
FFcontrol Skip Level
VFFCntrol = increasing
VFFCntrol = decreasing
Vskip(out)
–
0.75 0.85
V
Vskip(in)
0.55 0.65
–
FFcontrol Skip Hysteresis
VSKIP(HYS)
50
–
–
mV
Minimum Operating Frequency
fMIN
–
26
–
kHz
FEEDBACK OVER AND UNDERVOLTAGE PROTECTION
Soft−OVP to VREF Ratio
VFB = increasing, VSOVP/VREF
KSOVP/VREF 104
105
106
%
Soft−OVP Threshold
VFB = increasing
VSOVP
– 2.625 –
V
Soft−OVP Hysteresis
VFB = decreasing
VSOVP(HYS)
35
50
65
mV
Static OVP Minimum Duty Ratio
VFB = 2.55 V, VControl = open
DMIN
–
–
0
%
Undervoltage to VREF Ratio
VFB = increasing, VUVP1/VREF
KUVP1/VREF
8
12
16
%
Undervoltage Threshold
VFB = decreasing
VUVP1
–
300
–
mV
Undervoltage to VREF Hysteresis Ratio
VFB = increasing
VUVP1(HYS)
–
–
25
mV
Feedback Input Sink Current
VFB = VSOVP, HVFB = open
VFB = VUVP1, HVFB = open
IFB(SNK1)
IFB(SNK2)
50 200 450 nA
50 200 450
FAST OVERVOLTAGE AND BULK UNDERVOLTAGE PROTECTION (FOVP and BUV)
Fast OVP Threshold
VFOVP/BUV increasing
VFOVP
– 2.675 –
V
Fast OVP Hysteresis
VFOVP/BUV decreasing
VFOVP(HYS)
15
30
60
mV
Ratio Between Fast and Soft OVP Levels
KFOVP/SOVP = VFOVP/ VSOVP
KFOVP/SOVP 101.5 102.0 102.5 %
Ratio Between Fast OVP and VREF
KFOVP/VREF = VFOVP/ VREF
KFOVP/VREF 106
107
108
%
Bulk Undervoltage Threshold
VFOVP/BUV decreasing
VBUV
–
1.9
–
V
Undervoltage Protection Threshold to VREF Ratio VFOVP/BUV decreasing, VBUV/VREF KBUV/VREF
74
76
78
%
Open Pin Detection Threshold
VFOVP/BUV decreasing
VUVP2
0.2 0.3 0.4
V
Open Pin Detection Hysteresis
VFOVP/BUV increasing
VUVP2(HYS)
−
10
−
mV
Pull−Down Current Source
VFOVP/BUV = VBUV
VFOVP/ BUV = VUVP2
IFOVP/BUV(bias1) 50
200 450
nA
IFOVP/BUV(bias2) 50
200 450
LINE OVP
Ratio Between Line OVP and VREF
Line Overvoltage Threshold
Line Overvoltage Filter
STANDBY INPUT
VFB increasing
VFB increasing
KLOVP
111 112.5 114
%
VLOVP
– 2.813 –
V
tLOVP(blank)
45
55
65
ms
Standby Input Threshold
Standby Input Blanking Duration
VSTDBY decreasing
Vstandby
285 300 315 mV
tblank(STDBY) 0.8
1
1.2 ms
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