ANP015

ANP015 Application Note AP2011 High Efficiency Synchronous PWM Controller Preliminary Contents 1. AP2011 Specification 1.1 1.2 1.3 1.4 Features General Description Pin Assignments Pin Descriptions 1.5 Block Diagram 1.6 Absolute Maximum Ratings 2. Hardware 2.1 2.2 2.3 2.4 Introduction Description of the built-in function circuit Schematic Board of Material 2.5 Board Layout 3. Design Procedure 3.1 Introduction 3.2 Operating Specifications 3.3 Design Procedures 4. Design Example 4.1 Summary of Target Specifications 4.2 Calculating and Component Selections 4.3 Efficiency Calculation www.DataSheet4U.com This application note contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. A.0 Oct. 29, 2004 1/15 ANP015 Application Note AP2011 High Efficiency Synchronous PWM Controller Preliminary 1. AP2011 Specification 1.1 Features - Single 10V to 40V Supply Application - 1.25V + 2.0% Voltage Reference. - Virtual Frequency ControlTM. - Fast transient response. - Synchronous operation for high efficiency - Current limit function. - Small size with minimum external components - Soft Start and Shutdown functions - Industrial temperature range - Under Voltage Lockout function - SOP-14L Pb-Free package 1.2 General Description The AP2011 integrates Pulse-width-Modulation (PWM) control circuit ...