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参数资料
| 型号： | FSL137HNY |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 11/15页 |
| 文件大小： | 0K |
| 描述： | IC FPS PWR SWITCH 100KHZ 8-MDIP |
| 标准包装： | 50 |
| 系列： | FPS™ |
| 输出隔离： | 隔离 |
| 频率范围： | 94kHz ~ 106kHz |
| 输入电压： | 7 V ~ 22 V |
| 输出电压： | 700V |
| 功率（瓦特）： | 25W |
| 工作温度： | -40°C ~ 105°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 包装： | 管件 |
| 其它名称： | FSL137HNY-ND |
Constant Power Control
To limit the output power of the converter constantly,
high/low line compensation is included. Sensing the
6V
converter input voltage through the VIN pin, the
high/low line compensation function generates a
relative peak-current-limit threshold voltage for constant
Vo
V FB
3R
PWM
power control, as shown in Figure 27.
R
KA431
Figure 27.
Constant Power Control
Protections
The FSL137H provides full protection functions to
Feedback Open
Loop
4.6V
56ms
OLP
prevent the power supply and the load from being
Figure 29.
OLP Operation
damaged. The protection features include:
V DD Over-Voltage Protection (OVP)
Latch / Auto Recovery Function
The FSL137H provides additional protections by the
VIN pin, such as pull-HIGH latch and pull-LOW auto
recovery that depend on the application. As shown in
Figure 28, when V IN is higher than 5.2V, FSL137H is
latched until the V DD is discharged. FSL137H is in auto
recovery when V IN is lower than 0.3V.
V DD over-voltage protection prevents IC damage caused
by over voltage on the V DD pin. The OVP is triggered
when V DD reaches 28V. It has a debounce time (typically
130μs) to prevent false trigger by switching noise.
Over-Temperature Protection (OTP)
The SenseFET and the control IC are integrated,
making it easier to detect the temperature of the
SenseFET. When the temperature exceeds
approximately 142 ° C, thermal shutdown is activated.
Figure 28.
VIN Pin Function
Open-Loop / Overload Protection (OLP)
When the upper branch of the voltage divider for the
shunt regulator (KA431 shown) is broken, as shown in
Figure 29, or over current or output short occurs. There
is no current flowing through the opto-coupler transistor,
which pulls up the feedback voltage to 6V. When the
feedback voltage is above 4.6V for longer than 56ms,
OLP is triggered. This protection is also triggered when
the SMPS output drops below the nominal value longer
than 56ms due to the overload condition.
? 2009 Fairchild Semiconductor Corporation
FSL137H Rev. 1.0.3
11
www.fairchildsemi.com
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| FSL137MRIN | 功能描述:电流型 PWM 控制器 FPS for consumer 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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| FSL13A0D1 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:9A, 100V, 0.180 Ohm, Rad Hard, SEGR Resistant, N-Channel Power MOSFETs |
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