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Offline Regulators | NCP1129
概览
NCP1129 提供了构建可靠紧凑的 AC-DC 开关电源所需的一切功能，且周边元件极少。使用 NCP1129 构建的转换器结合了雪崩额定电压为 650 V 的 MOSFET，可以针对国际条件进行安全设计，而不会危害总体可靠性。NCP1129 实施了峰值电流模式控制和可调斜坡补偿，可确保连续导通模式 (CCM) 运行下的稳定性。最大峰值电流可使用外部电阻调节，使得设计人员能够增加斜坡补偿来稳定 CCM 电源。短路故障条件从辅助绕组电压进行独立检测，因此可使用真正的过载检测改善短路保护。源引脚提供对于 MOSFET 源的访问，实现过功率补偿。该开关供电范围高达 26 V，还提供带抖动的 65 kHz 或 100 kHz 开关频率，在峰值电流模式控制下运行。当辅助侧功率开始降低时，该开关将其开关频率自动折回至最低 26 kHz 的水平。当功率进一步下降时，该零部件进入跳过周期，同时对峰值电流进行限制。
应用
- Power Supply
终端产品
- Power supply for DVD, STB, CD-Player
- Aux supply for TV, USB, Appliance
特性
- 650 V Avalanche Rated MOSFET
- FixedFrequency 65 or 100 kHz CurrentMode Control Operation
- Frequency Foldback Down to 26 kHz and SkipCycle in Light Load Conditions
- Adjustable Current Limit
- 50 ms Timer-Based Auto-Recovery Short-Circuit Protection
- Frequency Jittering in Normal and Frequency Foldback Modes
- Option for Auto-Recovery or Latched Short-Circuit Protection
- Less than 100 mW Standby Power at High Line
产品列表
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产品
NCP1129AP100G
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Current Mode
100
+/-5% of FSW
Yes
2
650
0
Yes
0
8.8
Yes
No
No
Yes
Price N/A
More Details
NCP1129AP65G
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Current Mode
65
+/-5% of FSW
Yes
2
650
0
Yes
0
8.8
Yes
No
No
Yes
Price N/A
More Details
NCP1129BP100G
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Current Mode
100
+/-5% of FSW
Yes
2
650
0
Yes
0
8.8
Yes
No
No
No
Price N/A
More Details
NCP1129BP65G
Last Shipments
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Current Mode
65
+/-5% of FSW
Yes
2
650
0
Yes
0
8.8
Yes
No
No
No
Price N/A
More Details
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