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| 型号： | FSQ0565RSLDTU |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 17/23页 |
| 文件大小： | 0K |
| 描述： | IC PWM/SENSEFET QRC TO-220F-6L |
| 标准包装： | 400 |
| 系列： | FPS™ |
| 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）： | 80W |
| 工作温度： | -25°C ~ 85°C |
| 封装/外壳： | TO-220-6 全封装，成形引线 |
| 供应商设备封装： | TO-220-6L（成形） |
| 包装： | 管件 |
V gate
V gate continued 2 pulses
V gate continued another 2 pulses
V gate continued 2 pulses
GateX2
1st valley switching
2nd valley switching
1st valley switching
One-shot
fixed
fixed
fixed
fixed
fixed
fixed
AVS
triggering
1st or 2nd is depend on GateX2
de-triggering triggering
1st or 2nd is dependent on GateX2
V DS
t B
t B
t B
t B
t B
t B
GateX2 : Counting V gate every 2 pulses independent on other signals .
FSQ0565 Rev. 00
1st valley- 2nd valley frequency modulation.
Modulation frequency is approximately 17kHz.
Figure 37. Alternating Valley Switching (AVS)
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 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.
? 2008 Fairchild Semiconductor Corporation
FSQ0565RS/RQ Rev. 1.0.3
17
Figure 38. Recommended PCB Layout
Mylar? is a registered trademark of DuPont Teijin Films.
www.fairchildsemi.com
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相关代理商/技术参数 |
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| FSQ0565RSWDTU | 功能描述:电源开关 IC - 配电 Power Switch 6-Pin 6+Tab 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 |
| FSQ0565RWDTU | 功能描述:交流/直流开关转换器 SMPS Power switch 5A 650V RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| FSQ05A03L | 制造商:NIEC 制造商全称:Nihon Inter Electronics Corporation 功能描述:Schottky Barrier Diode |
| FSQ05A04 | 制造商:NIEC 制造商全称:Nihon Inter Electronics Corporation 功能描述:Schottky Barrier Diode |
| FSQ05A04B | 制造商:NIEC 制造商全称:Nihon Inter Electronics Corporation 功能描述:Schottky Barrier Diode |
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