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NCP1015_11 Datasheet, PDF (1/22 Pages) ON Semiconductor – Self-Supplied Monolithic Switcher for Low Standby-Power Offline SMPS | |||
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NCP1015
Self-Supplied Monolithic
Switcher for Low Standby-
Power Offline SMPS
The NCP1015 integrates a fixedâfrequency currentâmode
controller and a 700 V voltage MOSFET. Housed in a PDIPâ7 or
SOTâ223 package, the NCP1015 offers everything needed to build a
rugged and lowâcost power supply, including softâstart, frequency
jittering, shortâcircuit protection, skipâcycle, a maximum peak
current setâpoint and a Dynamic SelfâSupply (no need for an auxiliary
winding).
Unlike other monolithic solutions, the NCP1015 is quiet by nature:
during nominal load operation, the part switches at one of the available
frequencies (65â100 kHz). When the current setâpoint falls below a
given value, e.g. the output power demand diminishes, the IC
automatically enters the soâcalled skip cycle mode and provides
excellent efficiency at light loads. Because this occurs at typically 0.25
of the maximum peak value, no acoustic noise takes place. As a result,
standby power is reduced to the minimum without acoustic noise
generation.
Shortâcircuit detection takes place when the feedback signal fades
away e.g. unâtrue shortâcircuit or is broken optocoupler cases. Finally
softâstart and frequency jittering further ease the designer task to
quickly develop lowâcost and robust offline power supplies.
For improved standby performance, the connection of an auxiliary
winding stops the DSS operation and helps to consume less than
100 mW at high line.
Features
⢠Builtâin 700 V MOSFET with typical RDS(on) of 11 W
⢠Large Creepage Distance between Highâvoltage Pins
⢠Currentâmode Fixed Frequency Operation: 65 kHz â 100 kHz
⢠Skipâcycle Operation at Low Peak Currents Only: No Acoustic Noise!
⢠Dynamic SelfâSupply, No Need for an Auxiliary Winding
⢠Internal 1 ms Softâstart
⢠Autoârecovery Internal Output Shortâcircuit Protection
⢠Frequency Jittering for Better EMI Signature
⢠Below 100 mW Standby Power if Auxiliary Winding is Used
⢠Internal Temperature Shutdown
⢠Direct Optocoupler Connection
⢠SPICE Models Available for TRANsient and AC Analysis
⢠This is a PbâFree Device
http://onsemi.com
MARKING
DIAGRAMS
8
1
PDIPâ7
CASE 626A
AP SUFFIX
P1015APyy
AWL
YYWWG
1
4
4
SOTâ223
CASE 318E
1
ST SUFFIX
AYW
1015y G
G
1
yy
y
A
WL
YY
WW
G or G
= 06 (65 kHz), 10 (100 kHz)
= A (65 kHz), B (100 kHz)
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbâFree Package
(*Note: Microdot may be in either location)
PIN CONNECTIONS
PDIPâ7
VCC 1
NC 2
8 GND
7 GND
GND 3
FB 4
5 DRAIN
(Top View)
SOTâ223
VCC 1
FB 2
4 GND
Typical Applications
⢠Low Power acâdc Adapters for Chargers
⢠Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
DRAIN 3
(Top View)
© Semiconductor Components Industries, LLC, 2011
March, 2011 â Rev. 3
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 20 of this data sheet.
1
Publication Order Number:
NCP1015/D
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