参数资料
| 型号： | FSFR2100U |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 13/18页 |
| 文件大小： | 0K |
| 描述： | IC SWIT PROG OVP OCP 9SIP |
| 产品变化通告： | Product Discontinuation 27/Feb/2012 |
| 标准包装： | 19 |
| 输出隔离： | 隔离 |
| 频率范围： | 94kHz ~ 106kHz |
| 输入电压： | 9.6 V ~ 25 V |
| 输出电压： | 500V |
| 功率（瓦特）： | 400W |
| 工作温度： | -40°C ~ 130°C |
| 封装/外壳： | 9-SIP |
| 供应商设备封装： | 9-SIP |
| 包装： | 管件 |
| 产品目录页面： | 1222 (CN2011-ZH PDF) |
Latch-Mode Protection:
Once this protection is
5.4 Over-Voltage Protection (OVP) : When the LV CC
triggered, switching is terminated and the MOSFETs
remain off. The latch is reset only when LV CC is
discharged below 5V.
LV CC
7
reaches 23V, OVP is triggered. This protection is used
when auxiliary winding of the transformer to supply V CC
to FPS? is utilized.
5.5 Thermal Shutdown (TSD) : The MOSFETs and the
control IC in one package makes it easy for the control IC
11 / 14 V
+
-
LV CC good
V REF
Internal
Bias
to detect the abnormal over-temperature of the
MOSFETs. If the temperature exceeds approximately
130 ° C, the thermal shutdown triggers.
Shutdown
OCP
OLP
OVP
LV CC good
CON
20k
Auto-restart
protection
S Q
R -Q
F/F
Latch
protection
Q S
-Q R
F/F
AOCP
TSD
LV CC < 5V
6. PCB Layout Guideline : Duty unbalance problems
may occur due to the radiated noise from main
transformer, the inequality of the secondary side leakage
inductances of main transformer, and so on. Among
them, it is one of the dominant reasons that the control
Figure 27. Protection Blocks
5.1 Over-Current Protection (OCP) : When the sensing
pin voltage drops below -0.58V, OCP is triggered and the
MOSFETs remain off. This protection has a shutdown
time delay of 1.5μs to prevent premature shutdown
during startup.
5.2 Abnormal Over-Current Protection (AOCP) : If the
secondary rectifier diodes are shorted, large current with
extremely high di/dt can flow through the MOSFET
before OCP or OLP is triggered. AOCP is triggered
without shutdown delay when the sensing pin voltage
drops below -0.9V. This protection is latch mode and
reset when LV CC is pulled down below 5V.
5.3 Overload Protection (OLP) : Overload is defined as
the load current exceeding its normal level due to an
unexpected abnormal event. In this situation, the
protection circuit should trigger to protect the power
supply. However, even when the power supply is in the
normal condition, the overload situation can occur during
the load transition. To avoid premature triggering of
protection, the overload protection circuit should be
designed to trigger only after a specified time to
determine whether it is a transient situation or a true
overload situation. Figure 26 shows a typical overload
protection circuit. By sensing the resonant capacitor
voltage on the control pin, the overload protection can be
implemented. Using RC time constant, shutdown delay
can be also introduced. The voltage obtained on the
control pin is given as:
components in the vicinity of R T pin are enclosed by the
primary current flow pattern on PCB layout. The direction
of the magnetic field on the components caused by the
primary current flow is changed when the high and low
side MOSFET turns on by turns. The magnetic fields with
opposite direction from each other induce a current
through, into, or out of the R T pin, which makes the turn-
on duration of each MOSFET different. It is highly
recommended to separate the control components in the
vicinity of R T pin from the primary current flow pattern on
PCB layout. Figure 28 shows an example for the duty
balanced case.
Figure 28. Example for Duty Balancing
V CON =
C B
2( C B + C sense )
V Cr p ? p
(7)
where V Cr
voltage.
p-p
is the amplitude of the resonant capacitor
? 2007 Fairchild Semiconductor Corporation
FSFR series Rev.1.0.9
13
www.fairchildsemi.com
相关PDF资料 |
PDF描述 |
|---|---|
| FSFR2100XSL | IC FPS PWR SWITCH 400W 9-SIPL |
| FSGM0465RBWDTU | IC PWM/SENSEFET SMPS TO-220F-6W |
| FSGM0465RLDTU | IC PWM/SENSEFET SMPS TO-220F-6L |
| FSGM0565RBLDTU | IC OFF-LINE SWITCH PWM TO220F-6 |
| FSGM0565RWDTU | IC PWM/SENSEFET SMPS TO-220F-6W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| FSFR2100U_10 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Fairchild Power Switch (FPS) for Half-Bridge Resonant Converters |
| FSFR2100US | 功能描述:开关变换器、稳压器与控制器 HIGH POWER FPS 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 |
| FSFR2100USL | 功能描述:开关变换器、稳压器与控制器 400W Powr Switch for Half Brdg Res Cnvtr 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 |
| FSFR2100XS | 功能描述:开关变换器、稳压器与控制器 FSFR2100U for 400W Power Switch 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 |
| FSFR2100XSL | 功能描述:开关变换器、稳压器与控制器 400W Power Sw for Half-Brdg Res Convtr 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 |
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