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| 型号： | FSQ0765RQUDTU |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 17/19页 |
| 文件大小： | 0K |
| 描述： | IC CONV QUASI-RES 650V TO-220F-6 |
| 标准包装： | 400 |
| 输出隔离： | 隔离 |
| 频率范围： | 48kHz ~ 67kHz |
| 输入电压： | 9 V ~ 20 V |
| 输出电压： | 650V |
| 功率（瓦特）： | 90W |
| 工作温度： | -25°C ~ 85°C |
| 封装/外壳： | TO-220-6 成形引线 |
| 供应商设备封装： | TO-220-6L（成形） |
| 包装： | 管件 |
PCB Layout Guide
Due to the combined scheme, FPS shows better noise
immunity than conventional PWM controller and
MOSFET discrete solution. Further more are internal
drain current sense eliminates the possibility of noise
generation caused by a sensing resistor. There are some
recommendations for PCB layout to enhance noise
immunity and suppress natural noise inevitable in power-
handling components.
There are typically two grounds in the conventional
SMPS: power ground and signal ground. The power
ground is the ground for primary input voltage and
power, while the signal ground is ground for PWM
controller. In FPS, those two grounds share the same
pin, GND. Normally the separate grounds do not share
the same trace and meet only at one point, the GND pin.
More, wider patterns for both grounds are good for large
currents by decreasing resistance.
Capacitors at the VCC and FB pins should be as close
as possible to the corresponding pins to avoid noise from
the switching device. Sometimes Mylar? or ceramic
capacitors with electrolytic for V CC are better for smooth
operation. The ground of these capacitors needs to
connect to the signal ground (not power ground).
The cathode of the snubber diode should be close to the
drain pin to minimize stray inductance. The Y-capacitor
between primary and secondary should be directly
connected to the power ground of DC link to maximize
surge immunity.
Because the voltage range of feedback and sync line is
small, it is affected by the noise of the drain pin. Those
traces should not draw across or close to the drain line.
When the heat sink is connected to the ground, it should
be connected to the power ground. If possible, avoid
using jumper wires for power ground and drain.
Mylar? is a registered trademark of DuPont Teijin Films.
? 2008 Fairchild Semiconductor Corporation
FSQ0765RQ Rev. 1.0.1
17
Figure 37. Recommended PCB Layout
www.fairchildsemi.com
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| FSQ0765RQWDTU | 功能描述:电源开关 IC - 配电 SMPS Power Switch RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| FSQ0765RS | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency |
| FSQ0765RSLDTU | 功能描述:电源开关 IC - 配电 SMPS Power switch (QRC) 7A 650V RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| FSQ0765RSUDTU | 功能描述:电源开关 IC - 配电 SMPS Power switch (QRC) 7A 650V RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| FSQ0765RSWDTU | 功能描述:电源开关 IC - 配电 FPS For LCD RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
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