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NCP1360 PDF预览

NCP1360

更新时间: 2024-11-09 00:58:31
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
29页 373K
描述
Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller

NCP1360 数据手册

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NCP1360, NCP1365  
Low Power Offline Constant  
Current & Constant Voltage  
Primary Side PWM  
Current-Mode Controller  
with/without High Voltage  
Startup Current Source  
www.onsemi.com  
MARKING  
DIAGRAMS  
8
The NCP1360/65 offers a new solution targeting output power  
levels from a few watts up to 20 W in a universal−mains flyback  
application. Thanks to a novel method this new controller saves the  
secondary feedback circuitry (opto−coupler and TL431 reference)  
while achieving excellent line and load regulation.  
SOIC−7  
CASE 751U  
XXXXX  
ALYWX  
G
1
The NCP1360/65 operates in valley−lockout quasi−resonant peak  
current mode control mode at nominal load to provide high efficiency.  
When the secondary−side power starts diminishing, the switching  
frequency naturally increases until a voltage−controlled oscillator  
(VCO) takes the lead, synchronizing the MOSFET turn−on in a  
drain−source voltage valley. The frequency is thus reduced by  
stepping into successive valleys until the number 4 is reached. Beyond  
this point, the frequency is linearly decreased in valley−switching  
mode until a minimum is hit. This technique keeps the output in  
regulation with the tiniest dummy load. Valley lockout during the first  
four drain−source valleys prevents erratic discrete jumps and provides  
good efficiency in lighter load situations.  
TSOP−6  
CASE 318G  
xxxAYWG  
G
1
1
A
L
Y
= Assembly Location  
= Wafer Lot  
= Year  
W, WW = Work Week  
G
= Pb−Free Package  
(Note: Microdot may be in either location)  
ORDERING INFORMATION  
See detailed ordering and shipping information on page 27 of  
Features  
Primary−Side Feedback Eliminates Opto−coupler and TL431  
this data sheet.  
Reference  
5% Voltage Regulation  
10% Current Regulation  
Low Start−up Current (2.5 mA typ.) with NCP1360  
Clamped Gate−drive Output for MOSFET  
CS & Vs/ZCD pin Short and Open Protection  
Internal Temperature Shutdown  
Less than 10 mW No−Load Performance at High Line  
with NCP1365 Version  
560 V Startup Current Source  
No Frequency Clamp, 80 or 110 kHz Maximum  
Switching Frequency Options  
Quasi−Resonant Operation with Valley Switching  
Operation  
Fixed Peak Current & Deep Frequency Foldback @  
Light Load Operation.  
Less than 30 mW No−Load Performance at High Line  
with NCP1360 Version  
External Constant Voltage Feedback Adjustment  
Cycle by Cycle Peak Current Limit  
These are Pb−Free Devices  
Typical Applications  
Build−In Soft−Start  
Low power ac−dc Adapters for Chargers.  
Ac−dc USB chargers for Cell Phones, Tablets and  
Cameras  
Over & Under Output Voltage Protection  
Cable Drop Compensation (None, 150 mV, 300 mV or  
450 mV option)  
Wide Operation V ange (up to 28 V)  
CC R  
© Semiconductor Components Industries, LLC, 2016  
1
Publication Order Number:  
June, 2016 − Rev. 3  
NCP1360/D  

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