NCP1380ADR2G Просмотр технического описания (PDF) - ON Semiconductor
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NCP1380ADR2G
ON Semiconductor
NCP1380ADR2G Datasheet PDF : 26 Pages
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NCP1380
ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values TJ = 25°C, VCC = 12 V, VZCD = 0 V, VFB = 3 V,
VCS = 0 V, Vfault = 1.5 V, CT = 680 pF) For min/max values TJ = −40°C to +125°C, Max TJ = 150°C, VCC = 12 V)
Symbol
Condition
Min Typ Max Unit
FEEDBACK SECTION
RFB(pullup)
Iratio
VFB(TH)
VH2D
VH3D
VH4D
VHVCOD
Internal pullup resistor
Pin FB to current setpoint division ratio
FB pin threshold under which CT is clamped to
VCT(MAX)
Valley threshold
FB voltage where 1st valley ends and 2nd valley
starts
FB voltage where 2nd valley ends and 3rd valley
starts
FB voltage where 3rd valley ends and 4th valley
starts
FB voltage where 4th valley ends and VCO starts
VFB decreases
VFB decreases
VFB decreases
VFB decreases
15
18
22
kW
3.8
4.0
4.2
0.26
0.3
0.34
V
V
1.316 1.4 1.484
1.128 1.2 1.272
0.846 0.9 0.954
0.732 0.8 0.828
VHVCOI
VH4I
VH3I
VH2I
FB voltage where VCO ends and 4th valley starts
FB voltage where 4th valley ends and 3rd valley
starts
FB voltage where 3rd valley ends and 2nd valley
starts
FB voltage where 2nd valley ends and 1st valley
starts
VFB increases
VFB increases
VFB increases
VFB increases
1.316 1.4 1.484
1.504 1.6 1.696
1.692 1.8 1.908
1.880 2.0 2.120
FAULT PROTECTION (ALL VERSIONS)
TSHDN
Thermal Shutdown
Device switching (FSW
around 65 kHz)
140
−
170 °C
TSHDN(HYS)
tOVLD
tSSTART
Thermal Shutdown Hysteresis
Overload Timer
Soft−start duration
RFault(clamp) Clamp series resistor
VOVP
Fault detection level for OVP
tlatch(delay) Delay before latch confirmation
FAULT PROTECTION A & B VERSIONS
VFB = 4 V, VCS > VILIM
VFB = 4 V, VCS ramping up,
measured from 1st DRV
pulse to VCS(peak) = 90% of
VILIM
VFault increasing
−
40
−
°C
75
85
95
ms
2.8
3.8
4.8 ms
1.3 1.55 1.8 kW
2.35
2.5
2.65
V
22.5 30 37.5 ms
IOTP(REF)
Reference current for direct connection of an
NTC (Note 7)
VFault = VOTP + 0.2 V
85
91
97
mA
VOTP
Fault detection level for OTP
VFault(clamp) Clamped voltage (Fault pin left open)
FAULT PROTECTION C & D VERSIONS
VFault decreasing
Fault pin open
0.744 0.8 0.856 V
1.13 1.35 1.57
V
VBO
Brown−Out level
VFault decreasing
0.744 0.8 0.856 V
IBO
Sourced hysteresis current VFault > VBO
VFault = VBO + 0.2 V
9
10
11
mA
tBO(delay)
Delay before entering and exiting Brown−out
22.5 30 37.5 ms
VFault(clamp) Clamped voltage (Fault pin left open)
Fault pin open
1.0
1.2
1.4
V
3. Guaranteed by design.
4. The peak current setpoint goes down as the load decreases. It is frozen below Ipeak(VCO) (Ipeak = cst)
5. If negative voltage in excess to −300 mV is applied to ZCD pin, the current setpoint decrease is no longer guaranteed to be linear
6. Minimum value for TJ = 125°C
7. NTC with R110 = 8.8 kW.
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