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| 型号： | NCP1246AD065R2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 24/39页 |
| 文件大小： | 0K |
| 描述： | IC CTLR CURR MODE 65KHZ 8SOIC |
| 标准包装： | 2,500 |
| 系列： | * |
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NCP1246
Figure 54. HV Pin ac Input Timing Diagram with X2 Capacitor Discharge Sequence When the Application is
Unplugged Under High Line Condition
The Low Consumption Off Mode
There was implemented the low consumption off mode
allowing to reach extremely low no load input power as
described in previous chapters. If the voltage at feedback pin
decreases below the 0.4 V the controller enters the off mode.
The internal V CC is turned ? off, the IC consumes extremely
low V CC current and only the voltage at external V CC
capacitor is maintained by the Self ? Supply circuit. The
Self ? Supply circuit keeps the V CC voltage at the V CC(reg)
level. The supply for the FB pin watch dog circuitry and FB
pin bias is provided via the low consumption current sources
from the external V CC capacitor. The controller can only
start, if the FB pin voltage increases above the 2.2 V level.
See Figure 55 for timing diagrams.
Only the X2 cap discharge and Self ? Supply features is
enabled in the low consumption off mode. The X2 cap
discharging feature is enable due the safety reasons and the
Self ? Supply is enabled to keep the V CC supply, but only
very low V CC consumption appears in this mode. Any other
features are disabled in this mode.
The information about the latch status of the device is kept
in the low consumption off mode and this mode is used for
the TSD protection as well. The protection timer
GoToOffMode t GTOM is used to protect the application
against the false activation of the low consumption off mode
by the fast drop outs of the FB pin voltage below the 0.4 V
level. E.g. in case when is present high FB pin voltage ripple
during the skip mode.
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1246AD100R2G | 功能描述:电流型 PWM 控制器 FIXED FREQ (100KHZ) CURRE 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 |
| NCP1246B100DR2G | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Fixed Frequency Current Mode Controller for Flyback Converters |
| NCP1246B65DR2G | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Fixed Frequency Current Mode Controller for Flyback Converters |
| NCP1246BD065R2G | 功能描述:电流型 PWM 控制器 FIXED FREQ (65KHZ) CURREN 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 |
| NCP1246BD100R2G | 功能描述:电流型 PWM 控制器 FIXED FREQ (65KHZ) CURREN 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 |
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