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NCP1340B8D1R2G PDF预览

NCP1340B8D1R2G

更新时间: 2024-11-11 11:01:39
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
40页 1120K
描述
准谐振控制器,高电压,谷锁闭开关功能

NCP1340B8D1R2G 数据手册

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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  
8
9
1
1
th  
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  
9
1340xz  
ALYW  
G
If transient load capability is desired, the NCP1341 offers the same  
performance and features with the addition of power excursion mode  
(PEM).  
1
1340xz = Specific Device Code  
x
z
= 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  
A
L
Y
W
G
Wide V Range from 9 V to 28 V  
CC  
28 V V Overvoltage Protection  
CC  
Abnormal Overcurrent Fault Protection for Winding Short Circuit or  
Saturation Detection  
PIN CONNECTIONS  
Internal Temperature Shutdown  
1
HV  
Fault  
Valley Switching Operation with Valley−Lockout for Noise−Free  
Operation  
VCC  
FB  
ZCD/OPP  
CS  
DRV  
GND  
Frequency Foldback with 25 kHz Minimum Frequency Clamp for  
Increased Efficiency at Light Loads  
1
Skip Mode with Quiet−Skip Technology for Highest Performance  
During Light Loads  
Fault  
FMAX  
FB  
HV  
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  
CS  
(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.  
© Semiconductor Components Industries, LLC, 2017  
1
Publication Order Number:  
October, 2017 − Rev. 7  
NCP1340/D  

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