参数资料
| 型号： | FSFM261N |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 13/18页 |
| 文件大小： | 0K |
| 描述： | IC PWM/SENSEFET FPS 8-DIP |
| 标准包装： | 50 |
| 系列： | FPS™ |
| 输出隔离： | 隔离 |
| 频率范围： | 61kHz ~ 73kHz |
| 输入电压： | 9 V ~ 21 V |
| 输出电压： | 700V |
| 功率（瓦特）： | 35W |
| 工作温度： | -25°C ~ 85°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 包装： | 管件 |
PCB Layout Guide
Due to the combined scheme, FPS shows better noise
immunity than conventional PWM controller and
MOSFET discrete solutions. Furthermore, internal drain
current sense eliminates noise generation caused by a
sensing resistor. There are some recommendations for
PCB layout to enhance noise immunity and suppress the
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 V CC 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 is better for smooth
operation. The ground of these capacitors needs to
connect to the signal ground not the 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 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.
In FSFM260/261/300, drain pins are the heat radiation
pins, so wider PCB pattern is recommended to decrease
the package temperature. Drain pins are also high
voltage switching pins; however, too wide PCB pattern
may deteriorate EMI immunity.
? 2009 Fairchild Semiconductor Corporation
FSFM260N / FSFM261N / FSFM300N ? Rev. 1.0.1
13
Figure 23. Recommended PCB Layout
Mylar? is a registered trademark of DuPont Teijin Films.
www.fairchildsemi.com
相关PDF资料 |
PDF描述 |
|---|---|
| FSFR1600L | IC FPS POWER SWITCH 9-SIP |
| FSFR1600XSL | IC FPS PWR SWITCH 160W 9-SIPL |
| FSFR1700XSL | IC FPS PWR SWITCH 200W 9-SIPL |
| FSFR1800HSL | IC FPS HALF BRIDGE RES CONV 9SIP |
| FSFR1800XS | IC FPS PWR SWITCH 260W 9-SIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| FSFM300N | 功能描述:电流型 PWM 控制器 30W FPS 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 |
| FSFP502Y | 制造商:Panduit Corp 功能描述:FIBER PLENUM ZIPCORD,50UMINTER 制造商:Panduit Corp 功能描述:FIBER PLENUM ZIPCORD,50UMINTERCONNECT CA - Cable Rools/Shrink Tubing |
| FSFP601Y | 制造商:Panduit Corp 功能描述:FIBER PLENUM SMPLX 62.5UMINTER 制造商:Panduit Corp 功能描述:FIBER PLENUM SMPLX 62.5UMINTERCONNECT CA - Cable Rools/Shrink Tubing |
| FSFP602Y | 制造商:Panduit Corp 功能描述:FIBER PLENUM ZIPCORD 62.5INTER 制造商:Panduit Corp 功能描述:FIBER PLENUM ZIPCORD 62.5INTERCONNECT CA - Cable Rools/Shrink Tubing |
| FSFP901Y | 制造商:Panduit Corp 功能描述:FIBER PLENUM SMPLX 1.6MM SM IN 制造商:Panduit Corp 功能描述:FIBER PLENUM SMPLX 1.6MM SM INTERCONNECT - Cable Rools/Shrink Tubing |
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