NCP1230
ELECTRICAL CHARACTERISTICS (For typical values TJ = 25°C, for min/max values TJ = −40°C to +125°C, Max TJ = 150°C,
VCC = 13 V, VPIN8 = 30 V unless otherwise noted.)
Characteristic
Symbol
Pin
Min
Typ Max Unit
Supply Section (All frequency versions, otherwise noted)
Turn−On Threshold Level, VCC Going Up (Vfb = 2.0 V)
Minimum Operating Voltage after Turn−On
VCC Decreasing Level at which the Latch−Off Phase Ends (Vfb = 3.5 V)
VCC Level at which the Internal Logic gets Reset
Internal IC Consumption, No Output Load on Pin 6 (Vfb = 2.5 V)
Internal IC Consumption, 1.0 nF Output Load on Pin 6, FSW = 65 kHz
(Vfb = 2.5 V)
Internal IC Consumption, 1.0 nF Output Load on Pin 6, FSW = 100 kHz
Internal IC Consumption, 1.0 nF Output Load on Pin 6, FSW = 133 kHz
Internal IC Consumption, Latch−Off Phase
Internal Startup Current Source
VCCOFF
VCC(min)
VCClatch
VCCreset
ICC1
ICC2
ICC2
ICC2
ICC3
6
11.6 12.6 13.6
V
6
7.0
7.7
8.4
V
6
5.0
5.6
6.2
V
6
−
4.0
−
V
6
0.6
1.1
1.8
mA
6
1.3
1.8
2.5
mA
6
1.3
2.2
3.0
mA
6
1.3
2.8
3.3
mA
6
400
680 1000 mA
High−Voltage Current Source, 1.0 nF Load
(VCCOFF −0.2 V, Vfb = 2.5 V, VPIN8 = 30 V)
High−Voltage Current Source (VCC = 0 V)
Minimum Startup Voltage (Ic = 0.5 mA, VCCOFF −0.2 V, Vfb = 2.5 V)
Startup Leakage (VPIN8 = 500 V)
Drive Output
IC1
IC2
VHVmin
IHVLeak
8
1.8
3.2
4.2
mA
8
1.8
4.4
5.6
mA
8
−
20
23
V
8
10
30
80
mA
Output Voltage Rise−Time @ CL = 1.0 nF, 10−90% of Output Signal
Output Voltage Fall−Time @ CL = 1.0 nF, 10−90% of Output Signal
Source Resistance, RLoad 300 W (Vfb = 2.5 V)
Sink Resistance, at 1.0 V on Pin 5 (Vfb = 3.5 V)
Pin 1 Output Impedance (or Rdson between Pin 1 and Pin 6 when SW1
is closed) Rload on Pin 1 = 680 W
Current Comparator and Thermal Shutdown
Tr
Tf
ROH
ROL
RPFC
5
−
40
−
ns
5
−
15
−
ns
5
6.0
12.3
25
W
5
3.0
7.5
18
W
1
6.0
11.7
23
W
Input Bias Current @ 1.0 V Input Level on Pin 3
Maximum Internal Current Setpoint
Tj = 25°C
Tj = −40°C to +125°C
IIB
ILimit
3
−
0.02
−
mA
3
1.010 1.063 1.116 V
0.979
− 1.127
Default Internal Setpoint for Skip Cycle Operation and Standby
Detection
Vskip
3
600
750
900
mV
Default Internal Setpoint to Leave Standby
Vstby−out
−
1.0
1.25 1.5
V
Propagation Delay from CS Detected to Gate Turned Off (VGate = 10 V)
TDEL CS
3
(Pin 5 Loaded by 1.0 nF)
−
90
180
ns
Leading Edge Blanking Duration
Soft−Start Period (Note 3)
TLEB
SS
3
100
200 350
ns
−
−
2.5
−
ms
Temperature Shutdown, Maximum Value (Note 3)
Hysteresis while in Temperature Shutdown (Note 3)
3. Verified by Design.
TSD
−
150
165
−
°C
TSD hyste
−
−
25
−
°C
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