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NCP1342AMDCDD1R2G

更新时间： 2024-11-09 11:01:39
品牌 Logo 应用领域
安森美 - ONSEMI 开关反激控制控制器
页数 文件大小 规格书
41页 882K
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准谐振反激控制器，带谷锁闭开关

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NCP1342AMDCDD1R2G 数据手册

 浏览型号NCP1342AMDCDD1R2G的Datasheet PDF文件第2页浏览型号NCP1342AMDCDD1R2G的Datasheet PDF文件第3页浏览型号NCP1342AMDCDD1R2G的Datasheet PDF文件第4页浏览型号NCP1342AMDCDD1R2G的Datasheet PDF文件第5页浏览型号NCP1342AMDCDD1R2G的Datasheet PDF文件第6页浏览型号NCP1342AMDCDD1R2G的Datasheet PDF文件第7页 
NCP1342  
High Frequency Quasi-  
Resonant Flyback Controller  
The NCP1342 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 NCP1342 can enable no−load power consumption below 30 mW.  
The NCP1342 features a proprietary valley−lockout circuitry,  
www.onsemi.com  
th  
ensuring stable valley switching. This system works down to the 6  
valley and transitions to frequency foldback mode to reduce switching  
losses. As the load decreases further, the NCP1342 enters quiet−skip  
mode to manage the power delivery while minimizing acoustic noise.  
To ensure light load performance with high frequency designs, the  
NCP1342 incorporates Minimum Peak Current Modulation (MPCM)  
to reduce the switching frequency quickly. To help ensure converter  
ruggedness, the NCP1342 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. If transient  
load capability is desired, the NCP1343 offers the same performance  
and features with the addition of power excursion mode (PEM).  
8
9
1
1
SOIC−9 NB  
D SUFFIX  
CASE 751BP  
SOIC−8 NB  
D SUFFIX  
CASE 751  
MARKING DIAGRAMS  
8
9
1
1342abcde  
1342abcde  
ALYW  
ALYW  
G
G
1
Features  
1342abcde = Specific Device Code  
A
L
Y
W
G
= 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  
CC  
• 28 V V Overvoltage Protection  
CC  
• Abnormal Overcurrent Fault Protection for Winding Short Circuit or  
Saturation Detection  
PIN CONNECTIONS  
• Internal Temperature Shutdown  
1
Fault  
HV  
• Valley Switching Operation with Valley−Lockout for Noise−Free  
FMAX  
FB  
ZCD/OPP  
CS  
Operation  
VCC  
DRV  
GND  
• Frequency Foldback with 25 kHz Minimum Frequency Clamp for  
Increased Efficiency at Light Loads  
• MPCM for Fast Reduction of Switching Frequency at Light Loads  
1
HV  
Fault  
FB  
• Skip Mode with Quiet−Skip Technology for Highest Performance  
VCC  
During Light Loads  
DRV  
GND  
ZCD/OPP  
CS  
• Minimized Current Consumption for No Load Power Below 30 mW  
• Frequency Jittering for Reduced EMI Signature  
(Top Views)  
• Latching or Auto−Recovery Timer−Based Overload Protection  
• Adjustable Overpower Protection (OPP)  
ORDERING INFORMATION  
See detailed ordering and shipping information on page 3 of  
• Adjustable Maximum Frequency Clamp  
• Fault Pin for Severe Fault Conditions, NTC Compatible for OTP  
• 4 ms Soft−Start Timer  
this data sheet.  
© Semiconductor Components Industries, LLC, 2017  
1
Publication Order Number:  
December, 2017 − Rev. 1  
NCP1342/D  
1234567...41

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