Texas Instruments SLVP089 manual Introduction

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Introduction

2.1 Introduction

The SLVP089 is a dc-dc synchronous buck converter module that provides a 3.3-V output at up to 3 A with an input voltage range of 5.5 V to 12 V. The PWM controller is a TL5001 operating at a nominal frequency of 100 kHz. The TL5001 is configured for a maximum duty cycle of 100 percent and has short- circuit protection built in. The synchronous power stage consists of a PMOS switch and an NMOS synchronous rectifier.

2-2

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Contents User’s Guide 07/98 Literature Number SLVU001A July Important Notice Read This First About This ManualTrademarks Contents Figures TablesHardware TopicIntroduction Typical Synchronous Buck ConverterSchematic Schematic DiagramPower Supply Input/Output ConnectionsBoard Layout Shows the SLVP089 board layoutBill of Materials Bill of MaterialsTest Results Load Regulation and Ripple, 3.3-V 9-V InputPower Switch Turn-On and Delay from Q2 Off Inductor and Output Ripple Page Design Procedure Introduction Operating Specifications Operating SpecificationsDesign Procedures Duty Cycle Estimate+ 3 W Controller Functions + DD V O Compensation Network Bode Plot