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参数资料
| 型号： | NCP1027ATXGEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 13/30页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL NCP1027 10W STANDBY |
| 设计资源： | NCP1027ATXGEVB Schematic NCP1027ATXGEVB Test Procedure NCP1027ATXGEVB Bill of Materials |
| 标准包装： | 1 |
| 主要目的： | AC/DC，主面 |
| 输出及类型： | 1，非隔离 |
| 功率 - 输出： | 10W |
| 输出电压： | 5V |
| 电流 - 输出： | 2A |
| 输入电压： | 85 ~ 265VAC |
| 稳压器拓扑结构： | 回扫 |
| 频率 - 开关： | 65kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | NCP1027 |
| 其它名称： | NCP1027ATXGEVB-ND NCP1027ATXGEVBOS |
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NCP1027
Fault Condition – Output Short-Circuit
As soon as V CC reaches VCC ON , drive pulses are
internally enabled. If everything is correct, the auxiliary
winding increases the voltage on the V CC pin as the output
voltage rises. During the start-sequence, the controller
smoothly ramps up the peak current to Imax setting, e.g.
Ipeak_HI, which is reached after a typical period of 1.0 ms.
As soon as the peak current setpoint reaches its maximum
(during the startup period but also anytime an overload
occurs), an internal error flag is asserted, Ipflag, indicating
that the system has reached its maximum current limit set
point (Ip = Ip max). The assertion of this flag triggers a
55 ms counter. If at counter completion Ipflag remains
asserted, all driving pulses are stopped and the part stays off
during eight periods of 55 ms (440 ms). A new attempt to
restart occurs and will last 55 ms providing the fault is still
present. If the fault still affects the output, a safe burst mode
is entered, affected by a low duty-cycle operation (11%).
When the fault disappears, the power supply quickly
resumes operation. Figure 27 depicts this particular mode.
Figure 27. In case of short-circuit or overload, the NCP1027 protects itself and the power supply via a low
frequency burst mode. The V CC is maintained by the current source and self-supplies the controller.
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| NCP1027P065G | 功能描述:电流型 PWM 控制器 PWM Current Mode Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1027P100G | 功能描述:交流/直流开关转换器 PWM Current Mode Controller RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
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| NCP1028LEDGEVB | 功能描述:电源管理IC开发工具 720MA 18V LED DRIVER RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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