ZHCSGO2H September 2003 – November 2018 LM5007
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Application
- 8.2.1 Design Requirements
- 8.2.2
Detailed Design Procedure
- 8.2.2.1 Custom Design With WEBENCH® Tools
- 8.2.2.2 Custom Design With Excel Quickstart Tool
- 8.2.2.3 Feedback Resistors, RFB1 and RFB2
- 8.2.2.4 Switching Frequency Selection, RON
- 8.2.2.5 Buck Inductor, L1
- 8.2.2.6 Output Capacitor, COUT
- 8.2.2.7 Type I Ripple Circuit, RC
- 8.2.2.8 Input Capacitor, CIN
- 8.2.2.9 Current Limit, RCL
- 8.2.3 Application Curves
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文档支持
- 12机械、封装和可订购信息
8.2.2.6 Output Capacitor, COUT
Select the output capacitor to minimize the capacitive ripple. The maximum ripple is observed at the maximum input voltage and is given by Equation 12.
Equation 12. 
where
- ΔVCOUT is the voltage ripple across the capacitor,
- ΔIL is the peak-to-peak inductor ripple current.
Substituting VIN = 75 V and targeting ΔVCOUT= 10 mV gives COUT = 7.5 µF. Select a standard 15-µF value for COUT with X5R or X7R dielectric and a voltage rating of 16 V or higher.