NCP1615_16 Datasheet, PDF (5/46 Pages) ON Semiconductor – High Voltage High Efficiency Power Factor Correction Controller

NCP1615
Table 1. PIN FUNCTION DESCRIPTION
Pin Number
NCP1615C/D NCP1615A/B
Name
11
9
CS/ZCD
12
10
GND
13
11
DRV
14
12
VCC
15
13
16
14
HV
Function
This pin monitors the MOSFET current to limit its maximum current. This pin is
also connected to an internal comparator for zero current detection (ZCD). This
comparator is designed to monitor a signal from an auxiliary winding and to detect
the core reset when this voltage drops to zero. The auxiliary winding voltage is to
be applied through a diode to avoid altering the current sense information for the
on time (see application schematic).
Ground reference.
MOSFET driver. The high current capability of the totem pole gate drive (−0.5/
+0.8 A) makes it suitable to effectively drive high gate charge power MOSFETs.
Supply input. This pin is the positive supply of the IC. The circuit starts to operate
when V_CC exceeds V_CC(on). After start−up, the operating range is 9.5 V up to 28 V.
Removed for creepage distance.
This pin is the input for the line removal detection, line level detection, and
brownout detection circuits. For versions C and D, this pin is also the input for the
high voltage start−up circuit.
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