ANP007

ANP007 Application Note AP2001 Dual Buck Converter Contents 1. AP2001 Specification 1.1 Features 1.2 General Description 1.3 Pin Assignments 1.4 Pin Descriptions 1.5 Block Diagram 1.6 Absolute Maximum Ratings 2. Hardware 2.1 2.2 2.3 2.4 Introduction Typical Application Input / Output Connections Schematic 2.5 Bill of Material 2.6 Board Layout 3. Design Procedure 3.1 Introduction 3.2 Operating Specifications 3.3 Design Procedures 3.3.1 Selection of the buck inductor (L) 3.3.2 3.3.3 3.3.4 3.3.5 Selection of the output capacitor (Cout) Selection of power switch (MOSFET) Selection of power Rectifier (D) Selection of the input capacitor (Cin) 4. Voltage monitor by AP434 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 Feb. 20, 2003 1/11 ANP007 Application Note AP2001 Dual Buck Converter 1. AP2001 Specification 1.1 Features - Dual PWM Control Circuitry - Operating voltage can be up to 50V - Adjustable Dead Time Control (DTC) - Under voltage Lockout (UVLO) Protection - Short Circuit Protection (SCP) - Variable Oscillator Frequency...... 500Khz Max - 2.5V voltage reference Output - 16-pin PDIP and SOP packages 1.2 General Description The AP2001 integrates Pulse-width-Modulation (PWM) control circuit into a single chip, mainly design...