Offline Controllers | NCP1230
概览
NCP1230 代表了中等到高功率开关模式电源（如笔记本电脑适配器、离线电池充电器和消费电子设备）中实现低待机功率方面的一个重大飞跃。NCP1230 采用紧凑型 8 引脚封装（SO-8 或 PDIP-7），包含了构建坚固高效电源所需的所有控制功能。NCP1230 是带有内部斜坡补偿的电流模式控制器。NCP1230 提供的其中一个独特功能为事件管理方案，可以在待机期间禁用前端 PFC 电路，因此降低无负载功耗。 NCP1230 本身会在轻型负载进入周期跳过，同时限制峰值电流（至标称峰值的 25%），从而不会产生噪声。NCP1230 是一款高电压启动电路，不再需要外部组件，降低了功耗。NCP1230 还具有内部锁存功能，可用于 OVP 保护。此锁存通过将 CS 引脚拉至 3.0 V 以上进行触发，只能通过将 VCC 拉至接地进行重置。NCP1230 提供的某些其他功能有真正的过载保护、内部 2.5 ms 软启动、内部前缘间隔、实现低 EMI 的内部频率抖动。
- High Power AC/DC Adapters for Notebooks, etc.
- Offline Battery Chargers
- Flat TVs, DVD RW, Home Theatre, Set Top Boxes
- Current−Mode Operation with Internal Ramp Compensation
- Internal High−Voltage Start−Up Current Source for Loss Less Start−Up
- Extremely Low No−Load Standby Power
- Skip−Cycle Capability at Low Peak Currents
- Direct Connection to PFC Controller for Improved No−Load Standby Power
- Internal 2.5 ms Soft Start
- Internal Leading Edge Blanking
- Latched Primary Overcurrent and Overvoltage Protection
- Short−Circuit Protection Independent of Auxiliary Level
- Internal Frequency Jittering for Improved EMI Signature
- +500 mA/−800 mA Peak Current Drive Capability
- Available in Three Frequency Options: 65 kHz, 100 kHz, and 133 kHz
- Direct Optocoupler Connection
- SPICE Models Available for TRANsient and AC Analysis
- Pb-Free Packages are Available
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Last Shipments
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Flyback
Current Mode
100
Yes
Yes
Yes
Yes
Yes
18
500 / 800
Price N/A
More Details
Obsolete
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Flyback
Current Mode
133
Yes
Yes
Yes
Yes
Yes
18
500 / 800
Price N/A
More Details
Last Shipments
Pb
A
H
P
SOIC-7
1
260
REEL
2500
N
Flyback
Current Mode
65
Yes
Yes
Yes
Yes
Yes
18
500 / 800
Price N/A
More Details
Last Shipments
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Flyback
Current Mode
65
Yes
Yes
Yes
Yes
Yes
18
500 / 800
Price N/A
More Details
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Flyback
Current Mode
100
Yes
Yes
Yes
Yes
Yes
18
500 / 800
Price N/A
More Details
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Flyback
Current Mode
133
Yes
Yes
Yes
Yes
Yes
18
500 / 800
Price N/A
More Details
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Flyback
Current Mode
65
Yes
Yes
Yes
Yes
Yes
18
500 / 800
Price N/A
More Details
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