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TOP224

更新时间： 2024-02-08 08:45:40
品牌 Logo 应用领域
帕沃英蒂格盛 - POWERINT /
页数 文件大小 规格书
20页 1537K
描述
Three-Terminal Off-Line PWM Switch

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TOP224 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Not Recommended零件包装代码：SFM
包装说明：,针数：3
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：14 weeks
风险等级：7.78Samacsys Confidence：4
Samacsys Status：Released2D Presentation：https://componentsearchengine.com/2D/0T/1024628.1.1.png
Schematic Symbol：https://componentsearchengine.com/symbol.php?partID=1024628PCB Footprint：https://componentsearchengine.com/footprint.php?partID=1024628
3D View：https://componentsearchengine.com/viewer/3D.php?partID=1024628Samacsys PartID：1024628
Samacsys Image：https://componentsearchengine.com/Images/9/TOP224YN.jpgSamacsys Thumbnail Image：https://componentsearchengine.com/Thumbnails/1/TOP224YN.jpg
Samacsys Pin Count：3Samacsys Part Category：Switch
Samacsys Package Category：Transistor Outline, VerticalSamacsys Footprint Name：Plastic TO-220/3
Samacsys Released Date：2017-12-20 15:48:21Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATIONJESD-30 代码：R-PSFM-T3
JESD-609代码：e3功能数量：1
端子数量：3最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：1.65 A
封装主体材料：PLASTIC/EPOXY封装形状：RECTANGULAR
封装形式：FLANGE MOUNT峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified表面贴装：NO
切换器配置：BOOST最大切换频率：110 kHz
技术：CMOS温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：THROUGH-HOLE
端子位置：SINGLE处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

TOP224 数据手册

 浏览型号TOP224的Datasheet PDF文件第2页浏览型号TOP224的Datasheet PDF文件第3页浏览型号TOP224的Datasheet PDF文件第4页浏览型号TOP224的Datasheet PDF文件第6页浏览型号TOP224的Datasheet PDF文件第7页浏览型号TOP224的Datasheet PDF文件第8页 
TOP221-227  
V
IN  
V
IN  
0
DRAIN  
V
OUT  
0
0
I
OUT  
• • •  
• • •  
V
V
C
C(reset)  
0
0
• • •  
• • •  
I
C
Figure 6. Typical Waveforms for (1) Normal Operation, (2) Auto-restart, and (3) Power Down Reset.  
The leading edge blanking circuit inhibits the current limit  
comparator for a short time after the output MOSFET is  
turned on. The leading edge blanking time has been set so  
that current spikes caused by primary-side capacitances  
and secondary-side rectifier reverse recovery time will not  
cause premature termination of the switching pulse.  
Overtemperature Protection  
Temperature protection is provided by a precision analog  
circuit that turns the output MOSFET off when the junction  
temperature exceeds the thermal shutdown temperature  
(typically 135 °C). Activating the power-up reset circuit by  
removing and restoring input power or momentarily pulling  
the CONTROL pin below the power-up reset threshold resets  
the latch and allows TOPSwitch to resume normal power  
supply operation. VC is regulated in hysteretic mode and a  
4.7 V to 5.7 V (typical) sawtooth waveform is present on the  
CONTROL pin when the power supply is latched off.  
The current limit can be lower for a short period after the  
leading edge blanking time as shown in Figure 12. This is  
due to dynamic characteristics of the MOSFET. To avoid trig-  
gering the current limit in normal operation, the drain current  
waveform should stay within the envelope shown.  
High-Voltage Bias Current Source  
This current source biases TOPSwitch from the DRAIN pin  
and charges the CONTROL pin external capacitance (CT)  
during start-up or hysteretic operation. Hysteretic opera-  
tion occurs during auto-restart and overtemperature latched  
shutdown. The current source is switched on and off with an  
effective duty cycle of approximately 35%. This duty cycle  
is determined by the ratio of CONTROL pin charge (IC) and  
discharge currents (ICD1 and ICD2). This current source is  
turned off during normal operation when the output MOSFET  
is switching.  
Shutdown/Auto-restart  
To minimize TOPSwitch power dissipation, the shutdown/  
auto-restart circuit turns the power supply on and off at an  
auto-restart duty cycle of typically 5% if an out of regulation  
condition persists. Loss of regulation interrupts the external  
current into the CONTROL pin. VC regulation changes from  
shunt mode to the hysteretic auto-restart mode described  
above. When the fault condition is removed, the power sup-  
ply output becomes regulated, VC regulation returns to shunt  
mode, and normal operation of the power supply resumes.  
5
Rev. G 08/16  
www.power.com  
12345678...20

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