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Offline Controllers | NCP1380
概览
NCP1380 是一款高性能器件，旨在为准谐振转换器供电。该控制器基于专属的谷锁闭系统，可以在功率负载变轻时进行切换并降低开关频率。这样将产生稳定的运行，即使在漏极-源极谷中总是触发的开关事件下也是如此。此系统可在低至第 4 个谷的条件下运行，并在之后切换到变频模式，确保卓越的待机功率性能。为了提高过载条件下的安全性，该控制器包括了过功率保护 (OPP) 电路，可对高电平线路处提供的电源进行箝制。具有安全功能的固定内部计时器依赖反馈电压来检测故障。一旦计时器到期，控制器则停止并保持选项 A 和 C 的锁存状态，或者进入选项 B 和 D 的自动恢复模式。该控制器尤其适用于适配器应用，有一个引脚来实施过电压/高温组合保护（版本 A 和 B）或 欠电压/过电压组合保护（版本 C 和 D）。
应用
- AC-DC adapters for notebooks
- Offline battery chargers
- Auxiliary power supplies (flat TV, appliances)
终端产品
- Power AC-DC converters for adapters, TVs and set top boxes
特性
- Quasi-resonant peak current mode control operation
- Valley switching operation with valley lockout
- Frequency foldback at light load
- Adjustable overpower protection
- Auto-recovery or latched internal output short circuit protection
- Fixed internal 80 ms timer for short circuit protection
- Combined overvoltage and overtemperature protection (A and B versions)
- Combined overvoltage protection and brownout (C and D versions)
- VCC range operation up to 28 V
产品列表
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可订购器件:
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产品
NCP1380ADR2G
Obsolete
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Flyback
Current Mode
Variable
Yes
9
Yes
Yes
Yes
28
500 / 800
Price N/A
More Details
NCP1380BDR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
Y
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
28
500 / 800
$0.4237
More Details
NCP1380CDR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
Y
Flyback
Current Mode
Variable
Yes
9
Yes
Yes
Yes
28
500 / 800
$0.4835
More Details
NCP1380DDR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
Y
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
28
500 / 800
$0.4237
More Details
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