NCP1230A datasheet(1/21 Pages) ONSEMI

Part #	NCP1230A

Description	Low--Standby Power Soft Skip Mode Controller

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Manufacturer	ONSEMI [ON Semiconductor]

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 Semiconductor Components Industries, LLC, 2010

December, 2010 -- Rev. 7

1

Publication Order Number:

NCP1230A/D

NCP1230A

Low--Standby Power Soft

Skip Mode Controller

The NCP1230A 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

(SO--8 or PDIP--7), the NCP1230A contains all needed control

functionality to build a rugged and efficient power supply. The

NCP1230A is a current mode controller with internal ramp

compensation. Among the unique features offered by the NCP1230A

is an event management scheme that can disable the front--end PFC

circuit during standby, thus reducing the no load power consumption.

The NCP1230A itself goes into soft skipping at light loads while

limiting peak current (to 25% of nominal peak) so that no acoustic

noise is generated. The NCP1230A has a high--voltage startup circuit

that eliminates external components and reduces power consumption.

The NCP1230A 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 VCC 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 NCP1230A.

Features

 Current--Mode Operation with Internal Ramp Compensation

 Internal High--Voltage Startup Current Source for Loss Less Startup

 Extremely Low No--Load Standby Power

 Soft Skip Mode at Low Peak Currents (Skip--Cycle)

 Direct Connection to PFC Controller for Improved No--Load Standby

Power

 Internal 2.5 ms Soft--Start

 Internal Leading Edge Blanking

 Short--Circuit Protection Independent of Auxiliary Level

 Internal Frequency Dithering for Improved EMI Signature

 +500 mA/--800 mA Peak Current Drive Capability

 Available in Three Frequency Options: 65 kHz, 100 kHz, and 133 kHz

 Direct Optocoupler Connection

 SPICE Models Available for TRANsient and AC Analysis

 Pb--Free Packages are Available

Typical Applications

 High Power AC--DC Adapters for Notebooks, etc.

 Offline Battery Chargers

 Set--Top Boxes Power Supplies, TV, Monitors, etc.

http://onsemi.com

SO--8 VHVIC

D SUFFIX

CASE 751

PDIP--7 VHVIC

P SUFFIX

CASE 626B

PIN CONNECTIONS

DRV

GND

18

VCC

CS

FB

HV

PFC Vcc

MARKING

DIAGRAMS

xx

= Device Code: 65, 100, 133

yy

= Device Code: 65, 100, 133

A

= Assembly Location

W, WW = Work Week

L

= Wafer Lot

Y, YY

= Year

G

= Pb--Free Package

G

= Pb--Free Package

230Ay

ALYWy

G

1

8

1230Axx

AWL

YYWWG

1

http://onsemi.com

Seedetailedorderingandshippinginformationinthepackage

dimensions section on page 4 of this data sheet.

ORDERING INFORMATION

1

8

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