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SP7652ERL PDF预览

SP7652ERL

更新时间: 2024-02-25 09:54:16
品牌 Logo 应用领域
西伯斯 - SIPEX 稳压器
页数 文件大小 规格书
16页 1269K
描述
Wide Input Voltage Range 6A, 600kHz, Buck Regulator

SP7652ERL 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:7 X 4 MM, LEAD FREE, DFN-26Reach Compliance Code:unknown
风险等级:5.73其他特性:ALSO OPERATES WITH 3V TO 28V SUPPLY
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最大输入电压:5.5 V
最小输入电压:4.5 V标称输入电压:5 V
JESD-30 代码:R-PDSO-N26JESD-609代码:e3
长度:7 mm湿度敏感等级:3
功能数量:1端子数量:26
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:10 A封装主体材料:PLASTIC/EPOXY
封装代码:HVSON封装等效代码:SOLCC26,.16,20
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BUCK
最大切换频率:720 kHz温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:NO LEAD
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:4 mm
Base Number Matches:1

SP7652ERL 数据手册

 浏览型号SP7652ERL的Datasheet PDF文件第3页浏览型号SP7652ERL的Datasheet PDF文件第4页浏览型号SP7652ERL的Datasheet PDF文件第5页浏览型号SP7652ERL的Datasheet PDF文件第7页浏览型号SP7652ERL的Datasheet PDF文件第8页浏览型号SP7652ERL的Datasheet PDF文件第9页 
THEORY OF OPERATION  
over frequencies greater than 50kHz.  
v
The common mode output of the error am-  
plifier is 0.9V to 2.2V. Therefore, the PWM  
voltageramphasbeensetbetween.ꢀVand  
2.2Vtoensureproper0%to100%dutycycle  
capability. The voltage loop also includes  
two other very important features. One is an  
asynchronous startup mode. Basically, the  
synchronous rectifier cannot turn on unless  
the high-side NFET has attempted to turn  
on or the SS pin has exceeded ꢀ.7V. This  
featurepreventsthecontrollerfromdragging  
down” the output voltage during startup or in  
fault modes. The second feature is a 100%  
dutycycletimeoutthatensuressynchronized  
refreshing of the BST capacitor at very high  
duty ratios. In the event that the high-side  
NFET is on for 20 continuous clock cycles,  
a reset is given to the PWM flip-flop half  
way through the 2ꢀst cycle. This forces GL  
to rise for the cycle, in turn refreshing the  
BST capacitor.  
BsT  
GH  
voltage  
v
sWn  
v(v  
CC)  
GL  
voltage  
0v  
v(v  
)
in  
sWn  
voltage  
-0v  
-v(Dꢀode) v  
v(v )+v(v  
)
CC  
in  
BsT  
voltage  
v(v  
)
CC  
TiMꢁ  
Setting Output Voltages  
Power MOSFETs  
The SP7652 can be set to different output  
voltages. The relationship in the following  
formula is based on a voltage divider from  
the output to the feedback pin VFB, which is  
settoaninternalreferencevoltageof0.80V.  
Standard 1% metal film resistors of surface  
mount size 0603 are recommended.  
TheSP7652containsapairofintegratedlow  
resistanceN-MOSFETsdesignedtodriveup  
to6Aofoutputcurrent.Maximumoutputcur-  
rentcouldbelimitedbythermallimitationsof  
aparticularapplication.TheSP7652incorpo-  
rates a built-in over-temperature protection  
to prevent internal overheating.  
VOut = 0.80V (R1/R2+1)  
Rꢀ  
=> R2=  
{(VOut / 0.8V) -1}  
Where R1 = 68.1kΩ and for VOut = 0.80V  
setting, simply remove R2 from the board.  
Furthermore, one could select the value  
of the Rꢀ and R2 combination to meet the  
exact output voltage setting by restricting  
R1 resistance range such that 50kΩ < R1  
< 100kΩ for overall system loop stability.  
Rev F: ꢀꢀ/0ꢀ/06  
SP7652 Wide Input Voltage Range 6A, 600kHz, Buck Regulator  
© Copyright 2006 Sipex Corporation  
6

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