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© Semiconductor Components Industries, LLC, 2014
April, 2014 − Rev. 2
1 Publication Order Number:
NCP1615/D
NCP1615
High Voltage High
Efficiency Power Factor
Correction Controller
The NCP1615 is a high voltage PFC controller designed to drive
PFC boost stages based on an innovative Current Controlled
Frequency Foldback (CCFF) method. In this mode, the circuit
operates in critical conduction mode (CrM) when the inductor current
exceeds a programmable value. When the current is below this preset
level, the NCP1615 linearly decays the frequency down to a minimum
of about 26 kHz at the sinusoidal zero−crossing. CCFF maximizes the
efficiency at both nominal and light load. In particular, the standby
losses are reduced to a minimum. Innovative circuitry allows near−
unity power factor even when the switching frequency is reduced.
The integrated high voltage start−up circuit eliminates the need for
external start−up components and consumes negligible power during
normal operation. Housed in a SOIC−14 or SOIC−16 package, the
NCP1615 incorporates the features necessary for robust and compact
PFC stages, with few external components.
General Features
• High Voltage Start−Up Circuit with Integrated Brownout Detection
• Input to Force Controller into Standby Mode
• Restart Pin Allows Adjustment of Bulk Voltage Hysteresis in
Standby Mode
• Skip Mode Near the Line Zero Crossing
• Fast Line / Load Transient Compensation
• Valley Switching for Improved Efficiency
• High Drive Capability: −500 mA/+800 mA
• Wide V
CC
Range: from 9.5 V to 28 V
• Input Voltage Range Detection
• Input X2 Capacitor Discharge Circuitry
• Power Saving Mode (PSM) Enables < 30 mW No−load
Power Consumption
• This is a Pb and Halogen Free Device
Safety Features
• Adjustable Bulk Undervoltage Detection (BUV)
• Soft Overvoltage Protection
• Line Overvoltage Protection
• Overcurrent Protection
• Open Pin Protection for FB and FOVP/BUV Pins
• Internal Thermal Shutdown
• Bi−Level Latch Input for OVP and OTP
• Bypass/Boost Diode Short Circuit Protection
• Open Ground Pin Protection
Typical Applications
• PC Power Supplies
• Off Line Appliances Requiring Power Factor Correction
• LED Drivers
• Flat TVs
PIN CONNECTIONS
HVFB
FB
Restart
FOVP/BUV
VControl
FFControl
Fault
STDBY
HV
VCC
DRV
GND
CS/ZCD
PFCOK
PSTimer
NCP1615 16 Pins (Top View)
NCP1615 14 Pins (Top View)
FB
Restart
FOVP/BUV
VControl
FFControl
Fault
STDBY
HV
VCC
DRV
GND
CS/ZCD
PFCOK
SOIC−14 NB
CASE 751AN
MARKING DIAGRAMS
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
ORDERING INFORMATION
1
14
NCP1615XG
AWLYWW
1
14
NCP1615X = Specific Device Code
X = A, B, C, C2, D or D2
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
SOIC−16 NB
CASE 752AC
1
16
1
16
NCP1615XG
AWLYWW
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