NCL30030 Datasheet, PDF (4/32 Pages) ON Semiconductor – Combination Power Factor Correction

NCL30030
Table 1. PIN FUNCTION DESCRIPTION
Pin Out
Name
Function
1
BO/HV
Performs input brown−out detection and line voltage range detection.
2
Removed for creepage distance.
3
MULT
This is the output of the multiplication of the BO and Control signals. A capacitor should be put on this
pin for filtering. Suggested values from 1 nF − 20 nF.
4
PControl
Output of the PFC transconductance error amplifier. A compensation network is connected between
this pin and ground to set the loop bandwidth.
5
PONOFF
A resistor between this pin and ground sets the PFC turn off threshold. The voltage on this pin is
compared to an internal voltage signal proportional to the output power. The PFC disabled threshold
is determined by the resistor on this pin and the internal pull–up current source, I_PONOFF.
6
QCT
An external capacitor sets the frequency in VCO mode for the QR flyback controller.
7
Fault
The controller enters fault mode if the voltage of this pin is pulled above or below the fault thresholds.
A precise pull up current source allows direct interface with an NTC thermistor. Fault detection trig-
gers a latch or auto−recovery depending on device option.
8
QFB
Feedback input for the QR Flyback controller. Allows direct connection to an optocoupler.
9
QZCD
Input to the demagnetization detection comparator for the QR Flyback controller. Also used to set the
overpower compensation.
10
VCC
Supply input.
11
QCS
Input to the cycle−by−cycle current limit comparator for the QR Flyback section.
12
QDRV
QR flyback controller switch driver.
13
PDRV
PFC controller switch driver.
14
PCS/PZCD Input to the cycle−by−cycle current limit comparator for the PFC section. Also used to perform the
demagnetization detection for the PFC controller.
15
GND
Ground reference.
16
PFB
PFC feedback input from external resistor divider used to sense the PFC bulk voltage. This pin volt-
age is compared to an internal reference. There are three different reference voltage combinations
depending on ac mains voltage and version of the part.
Table 2. NCL30030 DEVICE OPTIONS
Device
Flyback Overload Protection
NCL30030B1DR2G
Auto−Recovery
NCL30030B2DR2G
Auto−Recovery
NCL30030B3DR2G
Auto−Recovery
NCL30030A1DR2G*
Latch
NCL30030A2DR2G*
Latch
NCL30030A3DR2G*
Latch
*Please contact local sales representative for availability
Fault OTP
Auto−Recovery
Auto−Recovery
Auto−Recovery
Latch
Latch
Latch
PFC Reference Voltage
(High Line / Low Line)
3.55 / 2 V
4/2V
4/4V
3.55 / 2 V
4/2V
4/4V
www.onsemi.com
4