Datasheet

NCL30051
http://onsemi.com
6
Table 4. ELECTRICAL CHARACTERISTICS (V
HV
= open, V
PFB
= 2.4 V, V
PCS
= 0 V, V
PZCD
= 5 V, V
PControl
= open, V
CC
= 15 V,
V
PDRV
= open, V
HDRVlo
= open, V
HVS
= 0 V, V
HDRVhi
= open, V
HBoost
= 15 V, C
OSC
= 2200 pF, C
VREF
= 0.1 mF, C
PCT
= 1000 pF, for typical
values T
J
= 25°C, for min/max values, T
J
is −40°C to 125°C, unless otherwise noted)
Characteristics Conditions Symbol Min Typ Max Unit
PFC CURRENT SENSE
Current Sense Threshold Voltage
V
PCS(ILIM)
0.78 0.84 0.92 V
Current Sense Input Bias Current V
PCS
= 2 V I
PCS
−1 0 1 mA
Leading Edge Blanking Duration t
PCS(LEB)
40 110 200 ns
Propagation Delay V
PCS
= V
PCS(ILIM)
+ 1 V t
PCS(delay)
– 90 250 ns
PFC ZERO CURRENT DETECTION
ZCD Threshold Voltage
Arming Threshold
Trigger Threshold
V
PZCD
increasing
V
PZCD
decreasing
V
ZCD(high)
V
ZCD(low)
1.9
1.3
2.1
1.5
2.3
1.7
V
ZCD Voltage Hysteresis V
ZCD(HYS)
400 600 800 mV
ZCD Input Bias Current V
PZCD
= 1 V
V
PZCD
= 5 V
I
PZCD(bias1)
I
PZCD(bias2)
−1
−1
–
–
1
1
mA
PFC MAXIMUM OFF TIME
Maximum Off Time t
PFC(off)
50 180 350 ms
PFC ON TIME RAMP GENERATOR
ON time Capacitor Charge Current V
PCT
= 0 V I
PCT(C)
220 270 300 mA
On Time Capacitor Discharge Time V
PCT
= 2.4 V to 0.6 V t
PCT(D)
– 70 300 ns
ON Time Capacitor Peak Voltage V
PCT(peak)
2.6 3.0 3.4 V
Minimum Duty Ratio V
PFB
= 3.0 V, V
PZCD
= 0 V D
PMIN
0 – – %
Maximum On Time Detect Delay V
PCT
= V
PCT(peak)
+ 1 V t
PCT(delay)
– 250 375 ns
Voltage Delta between PControl Voltage
Needed to Generate PDRV Pulses and
V
EA(OL)
DV
EA
− V
PCT(peak)
V
PCT(offset)
250 400 550 mV
PFC OVERVOLTAGE and UNDERVOLTAGE
Overvoltage Detector Threshold Voltage Midpoint between high and low
threshold, V
PControl
= 4 V
V
POVP
1.03*
V
PREF
1.05*
V
PREF
1.07*
V
PREF
V
Overvoltage Comparator Hysteresis Win-
dow
V
PControl
= 4V V
POVP(HYS)
5 30 60 mV
Propagation Delay V
PFB
= V
PREF
+ 1 V t
POVP(delay)
– 400 800 ns
Undervoltage Detector Threshold Voltage V
PFB
increasing
V
PFB
decreasing
V
PUVP(high)
V
PUVP(low)
−
175
290
230
350
−
mV
Undervoltage Comparator Hysteresis V
PFB
increasing V
PUVP(HYS)
20 60 100 mV
PFC DRIVER
PFC Driver Rise Time 10% to 90% (Note 4) t
PDRV(rise)
− 18 − ns
PFC Driver Fall Time 90% to 10% (Note 4) t
PDRV(fall)
− 9 − ns
PFC Driver High State Voltage I
PDRV
= −8 mA V
PDRV(OH)
14.00 14.55 − V
PFC Driver Low State Voltage I
PDRV
= 8 mA V
PDRV(OL)
− 0.12 0.50 V
4. Resistor/capacitor parallel combination (39 pF || 20 kW) between PDRV and driver supply and between PDRV and GND pins.