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NCP1341: 准谐振控制器,高电压,具有带功率偏移模式 (PEM) 的谷锁闭开关功能

Datasheet: High-Voltage, Quasi-Resonant Controller featuring Valley Lock-Out Switching
Rev. 6 (1192kB)
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NCP1341 是一款高度集成的准谐振反激控制器,适用于设计高性能离线功率转换器。NCP1341 具有集成的有源 X2 电容器放电功能,可以实现低于 30 mW 的无负载功耗。准谐振电流模式反激级功能具有专属的谷锁闭电路,确保了稳定的谷开关。此系统可在低至第 6 个谷的情况下运行,并转换为频率折回模式以降低开关损耗。随着负载进一步降低,NCP1341 进入静音跳过模式来管理功率传递。NCP1341 集成了功率偏移模式 (PEM),可最大程度减小需要高瞬变负载功能设计中的变压器尺寸。如果不要求瞬变负载功能,NCP1340 则与不带 PEM 时的性能和功能相同。为了帮助确保转换器耐用性,NCP1341 实施了若干关键保护功能,如内部欠电压检测、在任何输入电压下保证恒定最大输出功率的非功耗过功率保护 (OPP)、通过专门引脚实现的锁存过电压和 NTC 就绪高温保护,以及线路去除检测,可在去除线路时对 X2 电容器进行安全放电。
特性   优势
     
  • QR Frequency Jittering
 
  • Reduces EMI Signature
  • New Quiet-Skip Technology
 
  • Ensures Operation Outside Audible Range
  • Integrated HV Startup with Brownout Protection
 
  • Provides an efficient power-on source and protects agaisnts drops in input mains voltage
  • Valley Switching Operation with Valley Lockout
 
  • Maximizing the efficiency over the entire power range
  • Integrated X2 Capacitor Discharge Capability
 
  • Eliminates the need for a X2 resistors
  • NTC Compatible Fault Pin
 
  • Extra protection against high temperature or other fault conditions
  • High Drive Capability: -500 mA / +800 mA
 
  • Enables faster switching of primary-side MOSFET
  • Latch input for OVP and OTP implementations
 
  • Simple implementation of required protection functions
  • Power Excursion Mode (PEM)
 
  • Minimize transformer size in designs requiring high transient load capability
应用   终端产品
  • Medium or High Power AC-DC Adapters
  • Ultra High Density AC-DC Adapters
  • Computer Power Supplies
  • Phone and Tablet Adapters
 
  • Notebook Adpaters
  • Flat TV SMPS
  • Computer Power Supplies
  • Phone and Tablet Adapters
评估/开发工具信息
产品 状况 Compliance 简短说明 行动
NCP1341GEVB Active
Pb-free
High-Voltage, Quasi-Resonant Controller Featuring Valley Lock-Out Switching Evaluation Board.
Availability & Samples
Specifications
产品
状况
Compliance
具体说明
封装
MSL
容器
预算价格 (1千个数量的单价)
类型
外形
类型
Temperature
类型
数量
NCP1341A1D1R2G Active
Pb-free
Halide free
NCP1341 SOIC-9 NB 751BP 1 260 Tape and Reel 2500 $0.4133
NCP1341B1D1R2G Active
Pb-free
Halide free
NCP1341 SOIC-9 NB 751BP 1 260 Tape and Reel 2500 $0.4133
NCP1341B1DR2G Active
Pb-free
Halide free
NCP1341 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.4
NCP1341B4D1R2G Active
Pb-free
Halide free
NCP1341 SOIC-9 NB 751BP 1 260 Tape and Reel 2500 $0.4133
NCP1341B5D1R2G Active 
Pb-free
Halide free
NCP1341 SOIC-9 NB 751BP 1 260 Tape and Reel 2500 $0.4133
市场订货至交货的时间(周) : 8 to 12
市场订货至交货的时间(周) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 47,500
市场订货至交货的时间(周) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 37,500
市场订货至交货的时间(周) : 8 to 12
市场订货至交货的时间(周) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
fsw Typ (kHz)
Stand-by Mode
UVLO (V)
Short Circuit Protection
Latch
Soft Start
VCC Max (V)
Drive Cap. (mA)
Package Type
NCP1341A1D1R2G  
 $0.4133 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
9
Yes
Yes
Yes
30
500 / 800
SOIC-9 NB
NCP1341B1D1R2G  
 $0.4133 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
30
500 / 800
SOIC-9 NB
NCP1341B1DR2G  
 $0.4 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
30
500 / 800
SOIC-8
NCP1341B4D1R2G  
 $0.4133 
Pb
H
 Active   
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
30
500 / 800
SOIC-9 NB
NCP1341B5D1R2G  
 $0.4133 
Pb
H
 Active   
SOIC-9 NB
外形
751BP    751-07   
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High-Voltage, Quasi-Resonant Controller Featuring Valley Lock-Out Switching Evaluation Board - NCP1341GEVB

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