- 您现在的位置：买卖IC网 > PDF目录1794 > FSQ0465RUWDTU (Fairchild Semiconductor)IC SWIT PWM GREEN UVLO HV TO220F PDF资料下载
参数资料
| 型号： | FSQ0465RUWDTU |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 16/22页 |
| 文件大小： | 0K |
| 描述： | IC SWIT PWM GREEN UVLO HV TO220F |
| 产品变化通告： | Product Discontinuation 27/Feb/2012 |
| 标准包装： | 400 |
| 系列： | FPS™ |
| 输出隔离： | 隔离 |
| 频率范围： | 59.6kHz ~ 75.8kHz |
| 输入电压： | 8.5 V ~ 21 V |
| 输出电压： | 650V |
| 功率（瓦特）： | 60W |
| 工作温度： | -25°C ~ 85°C |
| 封装/外壳： | TO-220FL |
| 供应商设备封装： | TO-220F-6L（成形） |
| 包装： | 管件 |
| 产品目录页面： | 1222 (CN2011-ZH PDF) |
t smax =21 μ s
8. AVS (Alternating Valley Switching) : Due to the
quasi-resonant operation with limited frequency, the
I DS
I DS
switching frequency varies depending on input voltage,
load transition, and so on. At high input voltage, the
switching on time is relatively small compared to low
t B =15 μ s
I DS
t s
V DS
I DS
A
input voltage. The input voltage variance is small and the
switching frequency modulation width becomes small. To
improve the EMI performance, AVS is enabled when
input voltage is high and the switching on time is small.
Internally, quasi-resonant operation is divided into two
categories; one is first-valley switching and the other is
t B =15 μ s
t s
V DS
B
second-valley switching after blanking time. In AVS, two
successive occurrences of first-valley switching and the
other two successive occurrences of second-valley
switching is alternatively selected to maximize frequency
modulation. As depicted in Figure 34, the switching
frequency hops when the input voltage is high. The
I DS
t B =15 μ s
t s
V DS
I DS
C
f s
67kHz
59kHz
53kHz
48kHz
Assume the resonant period is 2 μ s
AVS trigger point
1
15 μ s
1
17 μ s
1
19 μ s
I DS
I DS
Constant
frequency
CCM
Variable frequency within limited range
DCM
AVS region
1
21 μ s
V DS
t B =15 μ s
t W =6 μ s
D
D C
FSQ0465 Rev.00
B
A
V IN
t smax =21 μ s
FSQ0465 Rev. 00
Figure 33. QRC Operation with Limited Frequency
V gate
Figure 34. Switching Frequency Range
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 .
FSQ0465 Rev. 00
1st valley- 2nd valley frequency modulation.
Modulation frequency is approximately 17kHz.
Figure 35. Alternating Valley Switching (AVS)
? 2009 Fairchild Semiconductor Corporation
FSQ0465RU Rev. 1.0.0
16
www.fairchildsemi.com
相关PDF资料 |
PDF描述 |
|---|---|
| FSQ0565RQLDTU | IC PWM/SENSEFET QRC TO-220F-6L |
| FSQ0565RSLDTU | IC PWM/SENSEFET QRC TO-220F-6L |
| FSQ0765RQUDTU | IC CONV QUASI-RES 650V TO-220F-6 |
| FSQ0765RSLDTU | IC PWM/SENSEFET QRC TO-220F-6L |
| FSQ100 | IC SWIT PWM GREEN OVP HV 8DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| FSQ0465RWDTU | 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 |
| FSQ0565R | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Green-Mode Fairchild Power Switch (FPS⑩) for Quasi-Resonant Operation - Low EMI and High Efficiency |
| FSQ0565R_08 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Green-Mode Fairchild Power Switch (FPS⑩) for Quasi-Resonant Operation - Low EMI and High Efficiency |
| FSQ0565RQ | 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 |
| FSQ0565RQLDTU | 功能描述:开关变换器、稳压器与控制器 SMPS Power switch (QRC) 5A 650V RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。