© Semiconductor Components Industries, LLC, 2016
June, 2018 − Rev. 7
1 Publication Order Number:
NCP1360/D
NCP1360, NCP1365
Low Power Offline Constant
Current & Constant Voltage
Primary Side PWM
Current-Mode Controller
with/without High Voltage
Startup Current Source
The NCP1360/65 offers a new solution targeting output power
levels from a few watts up to 20 W in a universal−mains flyback
application. Thanks to a novel method this new controller saves the
secondary feedback circuitry (opto−coupler and TL431 reference)
while achieving excellent line and load regulation.
The NCP1360/65 operates in valley−lockout quasi−resonant peak
current mode control mode at nominal load to provide high efficiency.
When the secondary−side power starts diminishing, the switching
frequency naturally increases until a voltage−controlled oscillator
(VCO) takes the lead, synchronizing the MOSFET turn−on in a
drain−source voltage valley. The frequency is thus reduced by
stepping into successive valleys until the number 4 is reached. Beyond
this point, the frequency is linearly decreased in valley−switching
mode until a minimum is hit. This technique keeps the output in
regulation with the tiniest dummy load. Valley lockout during the first
four drain−source valleys prevents erratic discrete jumps and provides
good efficiency in lighter load situations.
Features
• Primary−Side Feedback Eliminates Opto−coupler and TL431
Reference
• ±5% Voltage Regulation
• ±10% Current Regulation
• 560 V Startup Current Source
• No Frequency Clamp, 80 or 110 kHz Maximum
Switching Frequency Options
• Quasi−Resonant Operation with Valley Switching
Operation
• Fixed Peak Current & Deep Frequency Foldback @
Light Load Operation
• External Constant Voltage Feedback Adjustment
• Cycle by Cycle Peak Current Limit
• Build−In Soft−Start
• Over & Under Output Voltage Protection
• Cable Drop Compensation (None, 150 mV, 300 mV or
450 mV option)
• Wide Operation V
CC
R
ange (up to 28 V)
• Low Start−up Current (2.5 mA typ.) with NCP1360
• Clamped Gate−drive Output for MOSFET
• CS & Vs/ZCD pin Short and Open Protection
• Internal Temperature Shutdown
• Less than 10 mW No−Load Performance at High Line
with NCP1365 Version
• Less than 30 mW No−Load Performance at High Line
with NCP1360 Version
• These are Pb−Free Devices
Typical Applications
• Low power ac−dc Adapters for Chargers.
• Ac−dc USB chargers for Cell Phones, Tablets and
Cameras
TSOP−6
CASE 318G
MARKING
DIAGRAMS
www.
onsemi.com
(Note: Microdot may be in either location)
1
xxxAYWG
G
1
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
See detailed ordering and shipping information on page 27 of
this data sheet.
ORDERING INFORMATION
SOIC−7
CASE 751U
XXXXX
ALYWX
G
1
8
