参数资料
| 型号： | FAN100MY |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM GREEN CV/CC 8SOP |
| 标准包装： | 1 |
| 输出隔离： | 隔离 |
| 频率范围： | 39 ~ 45kHz |
| 输入电压： | 5.5 V ~ 15 V |
| 输出电压： | 30V |
| 功率（瓦特）： | 660mW |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOP |
| 包装： | 标准包装 |
| 其它名称： | FAN100MYDKR |
Protections
The FAN100 has several self-protective functions, such
as Over-Voltage Protection (OVP), Over-Temperature
Protection (OTP), and brownout protection. All the
protections are implemented as auto-restart mode.
When auto-restart protection is triggered, switching is
terminated and the MOSFET remains off. This causes
V DD to fall. When V DD reaches the V DD turn-off voltage of
5 V, the current consumed by FAN100 reduces to the
startup current (maximum 10 μA) and the current
supplied startup resistor charges the V DD capacitor.
When V DD reaches the turn-on voltage of 16 V, FAN100
resumes normal operation. In this manner, the auto-
restart alternately enables and disables the switching of
the MOSFET until the fault condition is eliminated ( see
V DD Over-Voltage Protection (OVP)
V DD over-voltage protection prevents damage from over-
voltage conditions. If the V DD voltage exceeds 28 V by
open-feedback condition, OVP is triggered. The OVP
has a debounce time (typical 250 μs) to prevent false
triggering by switching noise. It also protects other
switching devices from over voltage.
Over-Temperature Protection (OTP)
The built-in temperature-sensing circuit shuts down
PWM output if the junction temperature exceeds 140°C.
Brownout Protection
FAN100 detects the line voltage using auxiliary winding
voltage since the auxiliary winding voltage reflects the
input voltage when the MOSFET is turned on. VS pin is
clamped at 1.15 V while the MOSFET is turned on and
V DS
Power
On
Fault
Occurs
Fault Removed
brownout protection is triggered if the current out of VS
pin is less than I VS-UVP (typical 180 μ A) during the
MOSFET conduction.
Pulse-by-pulse Current Limit
When the sensing voltage across the current sense
resistor exceeds the internal threshold of 1.3 V, the
MOSFET is turned off for the remainder of the switching
V DD
cycle. In normal operation, the pulse-by-pulse current
limit is not triggered since the peak current is limited by
the control loop.
16V
5V
Operating Current
3.5mA
10μA
Normal
Operation
Fault
Situation
Normal
Operation
Figure 28. Auto-Restart Operation
? 2009 Fairchild Semiconductor Corporation
FAN100 Rev. 1.0.3
12
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FAN102 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Primary-Side-Control PWM Controller |
| FAN102_09 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Primary-Side-Control PWM Controller |
| FAN102MY | 功能描述:电流型 PWM 控制器 30V, 45kHz, PSR PWM 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 |
| FAN102MYTR | 制造商:Rochester Electronics LLC 功能描述: 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN103 | 制造商:Fairchild 功能描述:5W~10W Mobile Charger |
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