Datasheet > NCP4326

NCP4326

更新时间： 2024-11-10 04:13:39

品牌	Logo	应用领域
安森美 - ONSEMI		开关控制器
页数	文件大小	规格书
30页	424K
描述
Secondary Controller for Multi−Output Quasi−Resonant Switchmode Power Supplies

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中文翻译

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NCP4326 数据手册

NCP4326

Secondary Controller for

Multi−Output

Quasi−Resonant

Switchmode Power

Supplies

http://onsemi.com

This secondary controller significantly improves the overall

efficiency and cross−regulation figures when used in a Switchmode

Power Supply. Compared to traditional regulation schemes, the

NCP4326 provides superior performance in cross−regulation by

individually regulating outputs. Powered from a main winding, the

device actuates two independent switches that precisely adjust the

considered outputs to resistor−selectable voltages. This controller also

integrates a precision reference voltage, which together with a

dedicated operational amplifier reduces the feedback loop elements to

the minimum. In the end three independent output voltages can be

controlled by a single device.

MARKING DIAGRAM

NCP4326DG

AWLYWW

SOIC−16

D SUFFIX

CASE 751B

= Assembly Location

= Year

WL = Wafer Lot

A skip cycle feature improves the stand by power in light load

condition. Finally, dedicated shutdown pins offer an easy mean to

disable the secondary outputs in applications where a low standby

power performance is key.

WW = Work Week

= Pb−Free Device

PIN CONNECTIONS

Features

CP1

FB1

16 EN1

• 0% to 100% Duty Cycle Range

15 GND

• Integrated Shunt Regulator for Optocoupler Control

• Internal Voltage Reference (1.25 V, 1% @ 25°C)

• 2 Independent Power MOSFET Drivers

• Enable/Disable for Each Driver

EN2

CP2

FB2

14 Flux

13 DRV1

12 Vcc

• Independent Soft−Starts on both Output Drivers

• Independent Skip Cycle on both Output Drivers

• Standby Pin

• 580 / 650 mA Peak Current Source/Sink Driver Capability

• Synchronization Pin

• 5 V Undervoltage Lock−Out on Vcc

• Pb−Free Package is Available

11 DRV2

Sync

CPm

10 STBY

FBm

(Bottom View)

ORDERING INFORMATION

{

Device

Package

Shipping

Applications

NCP4326DR2

SOIC−16

3000 Tape & Reel

• Consumer Electronics Applications:

DVD, Set Top Box, CDR, Game Console

• Any Multi−Output Voltage Quasi−Resonant SMPS

NCP4326DR2G

SOIC−16

(Pb−Free)

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

Publication Order Number:

September, 2005 − Rev. 1

NCP4326/D

12 3 4 5 6 7...30

中文翻译

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与NCP4326相关器件

型号	品牌	获取价格	描述	数据表
NCP4326DR2	ONSEMI	获取价格	Secondary Controller for Multi−Output Quasi−Resonant Switchmode Power Supplies
NCP4326DR2G	ONSEMI	获取价格	Secondary Controller for Multi−Output Quasi−Resonant Switchmode Power Supplies
NCP4328	ONSEMI	获取价格	Secondary Side CV/CC Controller
NCP4328ASNT1G	ONSEMI	获取价格	辅助侧控制器，恒定电压/恒定电流 (CV / CC)
NCP4328BSNT1G	ONSEMI	获取价格	Secondary Side CV/CC Controller
NCP432B	ONSEMI	获取价格	Programmable Precision References
NCP432BCSNT1G	ONSEMI	获取价格	Programmable Precision References
NCP432BISNT1G	ONSEMI	获取价格	Programmable Precision References
NCP432BVSNT1G	ONSEMI	获取价格	Programmable Precision References
NCP432FCT2G	ONSEMI	获取价格	1.5A Ultra-Small Controlled Load Switch with Auto-Discharge Path

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