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Offline Controllers | NCP1248
概览
NCP1248 是一款新型固定频率电流模式控制器，具有动态自供电功能。在启动、瞬态、锁存、待机过程中，此功能会激活内部启动电流源，因而大大简化了辅助电源和 VCC 电容的设计。此器件包含一个特殊的高压检测器，会检测从交流线路上拔下的应用，然后触发 X2 放电电流。该高压结构还支持欠压检测。它采取基于计时器的故障检测，确保检测过载和可调补偿，以帮助保持最大功率，无论输入电压如何。由于频率折回，该控制器在轻负载条件下表现出良卓越的能效，同时保持极低的待机功耗。内部频率抖动、斜坡补偿和多功能锁存输入使得此控制器成为强大电源设计的绝佳备选。专用的离线模式通过让整个器件“休眠”，从而最大限度地降低控制电路的功耗，无负载功耗极低。此产品符合 IEC60950 标准。请参阅下面符合性报告部分中的测试报告和认证。
应用
- AC-DC Adapters
- LCD TV power supplies
终端产品
- Notebook Computers
特性
- Frequency foldback and skip mode
- Timer-based overload protection with latched (A version) or auto-recovery (B version) operation
- High-voltage startup with dynamic self supply
- Integrated brown-out detection
- Frequency Modulation
- Adjustable overpower protection
- Latch off input
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NCP1248AD065R2G
Last Shipments
Pb
A
H
P
SOIC-7
1
260
REEL
2500
N
Step-Up/Step-Down
Current Mode
65
Yes
8.9
Yes
Yes
Yes
28
500 / 800
Price N/A
More Details
NCP1248AD100R2G
Obsolete
Pb
A
H
P
SOIC-7
1
260
REEL
2500
N
Step-Up/Step-Down
Current Mode
100
Yes
8.9
Yes
Yes
Yes
28
500 / 800
Price N/A
More Details
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