NCP1616(2017) Ver la hoja de datos (PDF) - ON Semiconductor
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NCP1616 Datasheet PDF : 35 Pages
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NCP1616
Table 5. ELECTRICAL CHARACTERISTICS (VCC = 15 V, VHV = 120 V, VFB = 2.4 V, CVControl = 10 nF, VFFcontrol = 2.6 V, VZCD/CS
= 0 V, VSTDBY/FAULT = 1 V, 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
Maximum Off−Time (Watchdog Timer)
Missing Valley Timeout Timer
Pull−Up Current Source
Source Current for CS/ZCD Impedance
Testing
VCS/ZCD > VZCD(rising)
Measured after last ZCD transition
Detects open pin fault.
Pulls up at the end of toff1
toff1
toff2
ttout
ICS/ZCD1
ICS/ZCD2
80
200
320
ms
700 1000 1300
20
30
50
ms
–
1
–
mA
–
250
–
mA
CURRENT CONTROLLED FREQUENCY FOLDBACK
Minimum Dead Time
VFFCntrol = 2.6 V
tDT1
–
–
0
ms
Median Dead Time
VFFCntrol = 1.75 V
tDT2
11
14
18
ms
Maximum Dead Time
VFFCntrol = 1.0 V
tDT3
22
29
34
ms
FFcontrol Pin Current − Low Line
VHV = 162.5V, VControl = VControl(MAX)
IDT1
111
125.5 140
mA
FFcontrol Pin Current − High Line
VHV = 325 V, VControl = VControl(MAX)
IDT2
120
137
154
mA
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 = decreasing, VUVP1/VREF
KUVP1/VREF
8
12
16
%
Undervoltage Threshold
VFB = decreasing
VUVP1
–
300
–
mV
Undervoltage to VREF Hysteresis Ratio
VFB = increasing
VUVP1(HYS)
–
11
25
mV
Feedback Input Sink Current
VFB = VSOVP
VFB = VUVP1
IFB(SNK1)
50
200
450
nA
IFB(SNK2)
50
200
450
FAST OVERVOLTAGE AND BULK UNDERVOLTAGE PROTECTION ON FB PIN
Fast OVP Threshold
Fast OVP Hysteresis
Ratio Between Fast and Soft OVP Levels
Ratio Between Fast OVP and VREF
Bulk Undervoltage Threshold
Undervoltage Protection Threshold to VREF
Ratio
VFB increasing
VFB decreasing
KFOVP/SOVP = VFOVP/ VSOVP
KFOVP/VREF = VFOVP/ VREF
VFB decreasing
VFB decreasing, VBUV/VREF
VFOVP
–
2.675
–
V
VFOVP(HYS)
50
100
150 mV
KFOVP/SOVP 101.5 102.0 102.5
%
KFOVP/VREF
106
107
108
%
VBUV
–
2
–
V
KBUV/VREF
78
80
82
%
LINE OVP
Ratio Between Line OVP and VREF
Line Overvoltage Threshold
Line Overvoltage Filter
STANDBY FUNCTION ON STDBY/FAULT INPUT
VFB increasing
VFB increasing
KLOVP
110.5 112.0 113.5 %
VLOVP
–
2.8
–
V
tLOVP(blank)
45
55
65
ms
Standby Input Threshold
Standby Input Blanking Duration
VSTDBY/FAULT decreasing
Vstandby
285
300
315 mV
tblank(STDBY)
0.8
1
1.2
ms
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