Datasheet > NCP1231P100

NCP1231P100

更新时间： 2024-11-29 02:58:23

品牌	Logo	应用领域
安森美 - ONSEMI		开关光电二极管控制器
页数	文件大小	规格书
21页	493K
描述
Low−Standby Power High Performance PWM Controller

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中文翻译

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NCP1231P100 数据手册

NCP1231

Low−Standby Power High

Performance PWM

Controller

The NCP1231 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 SOIC−8 or PDIP−8, the

NCP1231 contains all needed control functionality to build a rugged

and efficient power supply. Among the unique features offered by the

NCP1231 is an event management scheme that can disable the

front−end PFC circuit during standby, thus reducing the no load power

consumption. The NCP1231 itself goes into cycle skipping at light

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

acoustic noise is generated and while in the skip cycle mode.

http://onsemi.com

MARKING

DIAGRAMS

231Dx

ALYW

SOIC−8

D SUFFIX

CASE 751

The NCP1231 also features an internal latching function that can be

used for Overvoltage Protection (OVP). The latch is triggered when

the voltage on Pin 8 rises above 4.0 V. During an OVP condition, the

output drive pulses are immediately stopped and the NCP1231 stays in

1231Pzz

AWL

YYWWG

PDIP−8

P SUFFIX

CASE 626

the latched off condition until V drops below 4.0 V (V

). In

CCreset

addition, Pin 8 also serves as a Brown−Out input which provides the

necessary safety feature when the SMPS faces low mains situations.

Features

• Current−Mode Operation with Internal Ramp Compensation

• Extremely Low Startup Current of 30 ꢀ A Typical

• Skip−Cycle Capability at Low Peak Currents

• Adjustable Soft−Start

231Dxy = Device Code

x = 1 or 6

y = 0 or 3

1231Pzz = Device Code

zz = 65, 100 or 133

= Assembly Location

• Overvoltage and Brown−Out Protection

L, WL

Y, YY

= Wafer Lot

= Year

• Short−Circuit Protection Independent of Auxiliary Level

• Internal Frequency Dithering for Improved EMI Signature

• Go−To−Standby Signal for PFC Front Stage

• Extremely Low No−Load, Noiseless, Standby Power

• Internal Leading Edge Blanking

W, WW = Work Week

G or G

= Pb−Free Package

PIN CONNECTIONS

• +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

PFC_V

BO/OVP

GND

DRV

Typical Applications

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 19 of this data sheet.

• High Power AC−DC Adapters for Notebooks, etc.

• Offline Battery Chargers

• Set−Top Boxes Power Supplies, TV, Monitors, etc.

Publication Order Number:

July, 2006 − Rev. 4

NCP1231/D

12 3 4 5 6 7...21

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与NCP1231P100相关器件

型号	品牌	获取价格	描述	数据表
NCP1231P100G	ONSEMI	获取价格	Low−Standby Power High Performance PWM Controller
NCP1231P133	ONSEMI	获取价格	Low−Standby Power High Performance PWM Controller
NCP1231P133G	ONSEMI	获取价格	Low−Standby Power High Performance PWM Controller
NCP1231P65	ONSEMI	获取价格	Low−Standby Power High Performance PWM Controller
NCP1231P65G	ONSEMI	获取价格	Low−Standby Power High Performance PWM Controller
NCP1232	ONSEMI	获取价格	Microprocessor Monitor
NCP1232/D	ONSEMI	获取价格	Microprocessor Monitor
NCP1232DR2	ONSEMI	获取价格	Microprocessor Monitor
NCP1234	ONSEMI	获取价格	Fixed Frequency Current Mode Controller for Flyback Converters
NCP1234_16	ONSEMI	获取价格	Fixed Frequency Current Mode Controller for Flyback Converters

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