NCP1230_08 Datasheet, PDF (1/21 Pages) ON Semiconductor – Low-Standby Power High Performance PWM Controller

NCP1230
Low-Standby Power High
Performance PWM
Controller
The NCP1230 represents a major leap towards achieving low
standby power in medium-to-high power Switched-Mode Power
Supplies such as notebook adapters, off-line battery chargers and
consumer electronics equipment. Housed in a compact 8-pin package
(SOIC-8, SOIC-7, or PDIP-7), the NCP1230 contains all needed
control functionality to build a rugged and efficient power supply. The
NCP1230 is a current mode controller with internal ramp
compensation. Among the unique features offered by the NCP1230 is
an event management scheme that can disable the front-end PFC
circuit during standby, thus reducing the no load power consumption.
The NCP1230 itself goes into cycle skipping at light loads while
limiting peak current (to 25% of nominal peak) so that no acoustic
noise is generated. The NCP1230 has a high-voltage startup circuit
that eliminates external components and reduces power consumption.
The NCP1230 also features an internal latching function that can be
used for OVP protection. This latch is triggered by pulling the CS pin
above 3.0 V and can only be reset by pulling V_CC to ground. True
overload protection, internal 2.5 ms soft-start, internal leading edge
blanking, internal frequency dithering for low EMI are some of the
other important features offered by the NCP1230.
Features
•ăCurrent-Mode Operation with Internal Ramp Compensation
•ăInternal High-Voltage Startup Current Source for Loss-Less Startup
•ăExtremely Low No-Load Standby Power
•ăSkip-Cycle Capability at Low Peak Currents
•ăDirect Connection to PFC Controller for Improved No-Load Standby
Power
•ăInternal 2.5 ms Soft-Start
•ăInternal Leading Edge Blanking
•ăLatched Primary Overcurrent and Overvoltage Protection
•ăShort-Circuit Protection Independent of Auxiliary Level
•ăInternal Frequency Jittering for Improved EMI Signature
•ă+500 mA/-800 mA Peak Current Drive Capability
•ăAvailable in Three Frequency Options: 65 kHz, 100 kHz, and 133 kHz
•ăDirect Optocoupler Connection
•ăSPICE Models Available for TRANsient and AC Analysis
•ăPb-Free Packages are Available
http://onsemi.com
MARKING
DIAGRAM
8
SOIC-8 VHVIC
230Dy
8
D SUFFIX
CASE 751
ALYWy
G
1
1
8
1
SOIC-7
D1 SUFFIX
CASE 751U
8
30D16
ALYWG
G
1
8
1
PDIP-7 VHVIC
P SUFFIX
CASE 626B
1
1230Pxxx
AWL
YYWWG
xxx
= Device Code: 65, 100, 133
y
= Device Code: 6, 1, 1
y
= Device Code: 5, 0, 3
A
= Assembly Location
L
= Wafer Lot
Y, YY = Year
W, WW = Work Week
G
= Pb-Free Package
G
= Pb-Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
1
PFC Vcc
FB
CS
GND
8
HV
V_CC
DRV
Typical Applications
•ăHigh Power AC-DC Adapters for Notebooks, etc.
•ăOffline Battery Chargers
•ăSet-Top Boxes Power Supplies, TV, Monitors, etc.
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering
information section on page 4 of this data sheet.
©Ă Semiconductor Components Industries, LLC, 2008
1
January, 2008 - Rev. 9
Publication Order Number:
NCP1230/D