Datasheet > NCP1340

NCP1340

更新时间： 2024-11-11 00:56:59

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
40页	1120K
描述
High-Voltage Quasi-Resonant, Controller Featuring Valley Lock-Out Switching

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NCP1340 数据手册

NCP1340

High-Voltage,

Quasi-Resonant, Controller

Featuring Valley Lock-Out

Switching

The NCP1340 is a highly integrated quasi−resonant flyback

controller suitable for designing high−performance off−line power

converters. With an integrated active X2 capacitor discharge feature,

the NCP1340 can enable no−load power consumption below 30 mW.

The NCP1340 features a proprietary valley−lockout circuitry,

www.onsemi.com

ensuring stable valley switching. This system works down to the 6

SOIC−8 NB

D SUFFIX

CASE 751

SOIC−9 NB

D SUFFIX

CASE 751BP

valley and transitions to frequency foldback mode to reduce switching

losses. As the load decreases further, the NCP1340 enters quiet−skip

mode to manage the power delivery while minimizing acoustic noise.

To help ensure converter ruggedness, the NCP1340 implements

several key protective features such as internal brownout detection, a

non−dissipative Over Power Protection (OPP) for constant maximum

output power regardless of input voltage, a latched overvoltage and

NTC−ready overtemperature protection through a dedicated pin, and

line removal detection to safely discharge the X2 capacitors when the

ac line is removed.

MARKING DIAGRAM

1340xz

ALYW

If transient load capability is desired, the NCP1341 offers the same

performance and features with the addition of power excursion mode

(PEM).

1340xz = Specific Device Code

= A or B

Features

= 1, 2, 3, 4, 5 or 6

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

• Integrated High−Voltage Startup Circuit with Brownout Detection

• Integrated X2 Capacitor Discharge Capability

• Wide V Range from 9 V to 28 V

• 28 V V Overvoltage Protection

• Abnormal Overcurrent Fault Protection for Winding Short Circuit or

Saturation Detection

PIN CONNECTIONS

• Internal Temperature Shutdown

Fault

• Valley Switching Operation with Valley−Lockout for Noise−Free

Operation

VCC

ZCD/OPP

DRV

GND

• Frequency Foldback with 25 kHz Minimum Frequency Clamp for

Increased Efficiency at Light Loads

• Skip Mode with Quiet−Skip Technology for Highest Performance

During Light Loads

Fault

FMAX

• Minimized Current Consumption for No Load Power Below 30 mW

• Frequency Jittering for Reduced EMI Signature

• Latching or Auto−Recovery Timer−Based Overload Protection

• Adjustable Overpower Protection (OPP)

VCC

DRV

GND

ZCD/OPP

(Top Views)

• Fixed or Adjustable Maximum Frequency Clamp

• Fault Pin for Severe Fault Conditions, NTC Compatible for OTP

• 4 ms Soft−Start Timer

ORDERING INFORMATION

See detailed ordering and shipping information n on page 3

of this data sheet.

Publication Order Number:

October, 2017 − Rev. 7

NCP1340/D

12 3 4 5 6 7...40

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与NCP1340相关器件

型号	品牌	获取价格	描述	数据表
NCP1340_16	ONSEMI	获取价格	High-Voltage Quasi-Resonant, Controller Featuring Valley Lock-Out Switching
NCP1340_17	ONSEMI	获取价格	High-Voltage Quasi-Resonant, Controller Featuring Valley Lock-Out Switching
NCP1340A3D1R2G	ONSEMI	获取价格	准谐振控制器，高电压，谷锁闭开关功能
NCP1340A6DR2G	ONSEMI	获取价格	High-Voltage Quasi-Resonant, Controller Featuring Valley Lock-Out Switching
NCP1340B10DR2G	ONSEMI	获取价格	准谐振控制器，高电压，谷锁闭开关功能
NCP1340B1DR2G	ONSEMI	获取价格	High-Voltage Quasi-Resonant, Controller Featuring Valley Lock-Out Switching
NCP1340B3D1R2G	ONSEMI	获取价格	High-Voltage Quasi-Resonant, Controller Featuring Valley Lock-Out Switching
NCP1340B4D1R2G	ONSEMI	获取价格	High-Voltage Quasi-Resonant, Controller Featuring Valley Lock-Out Switching
NCP1340B5D1R2G	ONSEMI	获取价格	High-Voltage Quasi-Resonant, Controller Featuring Valley Lock-Out Switching
NCP1340B6DR2G	ONSEMI	获取价格	High-Voltage Quasi-Resonant, Controller Featuring Valley Lock-Out Switching

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