方案
按技术分类
Offline Controllers | NCP1365
概览
NCP1365 提供了一个新型方案，通用电源反激应用中比 20 W 略高几瓦的输出功率等级。由于采用一种新方法，此新控制器不再需要辅助反馈电路（通常为光耦合器和 TL431 参比），同时可以实现卓越的线路和负载调节。NCP1365 在高负载时以谷锁闭准谐振峰值电流控制模式运行，以提供高能效。当辅助侧功率开始消失时，该控制器将自动调节占空比，然后在更低负载下，该控制器通过谷开关勘测，以固定峰值电流进入脉冲频率调制。这种技术允许在微小的虚拟负载下保持输出调节。前 4 个谷中的谷锁闭可防止谷跳跃运行，然后在更低负载下的固开关可提供高能效。
应用
- AC-DC USB chargers for cell phones, tablets, and other portable devices
终端产品
- AC-DC USB chargers for cell phones, tablets, and other portable devices
特性
- No frequency clamp, 80 or 110 kHz Maximum Switching Frequency
- Quasi-Resonant with Valley Switching Operation
- 560-V Startup Current Source
- Fixed Peak Current & Deep frequency foldback @ light load operation
- Cycle by Cycle peak current limit
- Wide Operation VCC range (up to 28 V)
- Internal Temperature Shutdown
- CS & Vs/ZCD pin Short and Open Protection
- Constant Current Primary-side feedback eliminates secondary controller
- ±10% Current Regulation
- Build-in soft-sart
- Low Start-up current (2.5 μA typ.)
- Clamped Gate-drive Output for Mosfet
- Less than 10 mW No-Load Performance
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NCP1365AABCYDR2G
Lifetime
Pb
A
H
P
SOIC-7
1
260
REEL
2500
N
Flyback
Current Mode
Variable
Yes
6.5
Yes
Yes
Yes
28
2000 / 1000
$0.2985
More Details
NCP1365ACBAXDR2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
Variable
Yes
6.5
Yes
Yes
Yes
28
2000 / 1000
$0.3371
More Details
NCP1365BABCYDR2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
Variable
No
6.5
Yes
Yes
Yes
28
2000 / 1000
$0.3371
More Details
Show More
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