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TOP203YAI*

更新时间： 2024-02-02 09:37:44
品牌 Logo 应用领域
帕沃英蒂格盛 - POWERINT /
页数 文件大小 规格书
16页 164K
描述
0-100 W TOPSwitch using 230 VAC input or 0

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中文翻译

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TOP203YAI* 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SFM包装说明：TO-220,
针数：3Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.83模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最小输入电压：36 VJESD-30 代码：R-PSFM-T3
功能数量：1端子数量：3
最高工作温度：85 °C最低工作温度：-40 °C
标称输出电压：5.7 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-220封装形状：RECTANGULAR
封装形式：FLANGE MOUNT认证状态：Not Qualified
表面贴装：NO切换器配置：BOOST
最大切换频率：100 kHz技术：CMOS
温度等级：INDUSTRIAL端子形式：THROUGH-HOLE
端子位置：SINGLEBase Number Matches：1

TOP203YAI* 数据手册

 浏览型号TOP203YAI*的Datasheet PDF文件第4页浏览型号TOP203YAI*的Datasheet PDF文件第5页浏览型号TOP203YAI*的Datasheet PDF文件第6页浏览型号TOP203YAI*的Datasheet PDF文件第8页浏览型号TOP203YAI*的Datasheet PDF文件第9页浏览型号TOP203YAI*的Datasheet PDF文件第10页 
TOP200-4/14  
D2  
UG8BT  
L1  
3.3 µH  
7.5 V  
R1  
39 Ω  
R2  
68 Ω  
C2  
C3  
VR1  
680 µF  
25 V  
120 µF  
25 V  
P6KE150  
U2  
NEC2501  
D1  
UF4005  
VR2  
1N5234B  
6.2 V  
BR1  
400 V  
C1  
33 µF  
400 V  
RTN  
L2  
22 mH  
D3  
1N4148  
CIRCUIT PERFORMANCE:  
Line Regulation - ±0.5%  
(85-265 VAC)  
Load Regulation - ±1%  
(10 -100%)  
C7  
1 nF  
Y1  
C6  
0.1 µF  
C5  
47µF  
T1  
DRAIN  
F1  
3.15 A  
Ripple Voltage ± 50 mV  
Meets CISPR-22 Class B  
SOURCE  
CONTROL  
L
C4  
U1  
0.1 µF  
TOP202YAI  
N
J1  
ST202A REFERENCE DESIGN BOARD  
PI-1695-112895  
Figure 8. Schematic Diagram of a 15 W Universal Input Power Supply Utilizing the TOP202 and Simple Optocoupler Feedback.  
Simple Optocoupler Feedback  
currenttransferratio,andtheTOPSwitch  
control current to duty cycle transfer  
function set the DC control loop gain.  
C5togetherwiththecontrolpindynamic  
impedance and capacitor ESR establish  
a control loop pole-zero pair. C5 also  
determines the auto-restart frequency  
and filters internal gate drive switching  
currents. R2andVR2provideminimum  
current loading when output current is  
low. See DN-11 for more information  
regarding the use of the TOP202 in a  
low-cost, 15 W universal power supply.  
voltage can be fine tuned by adjusting  
the resistor divider formed by R4 and  
R5. Other output voltages are possible  
by adjusting the transformer turns ratios  
as well as the divider ratio.  
The circuit shown in Figure 8 is a 7.5 V,  
15Wsecondaryregulatedflybackpower  
supply using the TOP202 that will  
operate from 85 to 265 VAC input  
voltage. Improved output voltage  
accuracy and regulation over the circuit  
of Figure 7 is achieved by using an  
optocoupler and secondary referenced  
Zener diode. The general operation of  
thepowerstageofthiscircuitisthesame  
as that described for Figure 7.  
The general operation of the input and  
power stages of this circuit are the same  
as that described for Figures 7 and 8. R3  
and C5 tailor frequency response. The  
TL431(U2)regulatestheoutputvoltage  
by controlling optocoupler LED current  
(and TOPSwitchduty cycle) to maintain  
anaveragevoltageof 2.5VattheTL431  
input pin. Divider R4 and R5 determine  
the actual output voltage. C9 rolls off  
thehighfrequencygainoftheTL431for  
stable operation. R1 limits optocoupler  
LED current and determines high  
frequency loop gain. For more  
information, refer to application note  
AN-14.  
Theinputvoltageisrectifiedandfiltered  
by BR1 and C1. L2, C6 and C7 reduce  
conducted emission currents. The bias  
winding is rectified and filtered by D3  
and C4 to create a typical 11 V bias  
voltage. Zener diode (VR2) voltage  
together with the forward voltage of the  
LED in the optocoupler U2 determine  
the output voltage. R1, the optocoupler  
Accurate Optocoupler Feedback  
The circuit shown in Figure 9 is a highly  
accurate, 15 V, 30 W secondary-  
regulatedflybackpowersupplythatwill  
operate from 85 to 265 VAC input  
voltage. A TL431 shunt regulator  
directly senses and accurately regulates  
the output voltage. The effective output  
D
7/96  
7
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