欢迎访问ic37.com |
会员登录 免费注册
发布采购

DER-50 参数 Datasheet PDF下载

DER-50图片预览
型号: DER-50
PDF下载: 下载PDF文件 查看货源
内容描述: 使用TOP245R 30W多路输出电源 [30W Multiple Output Power Supply using TOP245R]
分类和应用:
文件页数/大小: 31 页 / 958 K
品牌: POWERINT [ Power Integrations ]
 浏览型号DER-50的Datasheet PDF文件第21页浏览型号DER-50的Datasheet PDF文件第22页浏览型号DER-50的Datasheet PDF文件第23页浏览型号DER-50的Datasheet PDF文件第24页浏览型号DER-50的Datasheet PDF文件第26页浏览型号DER-50的Datasheet PDF文件第27页浏览型号DER-50的Datasheet PDF文件第28页浏览型号DER-50的Datasheet PDF文件第29页  
DER-50  
Set Top Box Design using TOP245R  
April 20, 2005  
Output Ripple Measurements  
10.4.1 Ripple Measurement Technique  
For DC output ripple measurements, a modified oscilloscope test probe must be utilized  
in order to reduce spurious signals due to pickup. Details of the probe modification are  
provided in Figure 21 and Figure 22.  
The 5125BA probe adapter is affixed with two capacitors tied in parallel across the probe  
tip. The capacitors include one (1) 0.1 µF/50 V ceramic type and one (1) 1.0 µF/50 V  
aluminum electrolytic. The aluminum electrolytic type capacitor is polarized, so  
proper polarity across DC outputs must be maintained (see below).  
Probe Ground  
Probe Tip  
Figure 21 - Oscilloscope Probe Prepared for Ripple Measurement. (End Cap and Ground Lead Removed)  
Figure 22 - Oscilloscope Probe with Probe Master 5125BA BNC Adapter. (Modified with wires for probe  
ground for ripple measurement, and two parallel decoupling capacitors added)  
Power Integrations  
Tel: +1 408 414 9200 Fax: +1 408 414 9201  
Page 25 of 31  
www.powerint.com  
 复制成功!