TPS55386

TPS55383, TPS55386 www.ti.com ......................................................................................................................................................................................... SLUS818 – SEPTEMBER 2008 3-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET AND EXTERNAL COMPENSATION FEATURES 1 23 4.5-V to 28-V Input Range Output Voltage 0.8 V to 90% of Input Voltage Output Current Up to 3 A Two Fixed Switching Frequency Versions: – TPS55383: 300 kHz – TPS55386: 600 kHz Three Selectable Levels of Overcurrent Protection (Output 2) 0.8-V 1.75% Voltage Reference 2.1-ms Internal Soft Start Dual PWM Outputs 180° Out-of-Phase Ratiometric or Sequential Startup Modes Configurable as Dual Output or Two-Channel Single Output Multiphase for 6 amp Capability 85-mΩ Internal High-Side MOSFETs Current Mode Control with External Compensation Pulse-by-Pulse Overcurrent Protection Thermal Shutdown Protection at +148°C 16-Pin PowerPAD™ HTSSOP package APPLICATIONS Set Top Box Digital TV Power for DSP Consumer Electronics CONTENTS Device Ratings Electrical Characteristics Device Information Application Information Design Examples Additional References 2 4 10 13 30 39 DESCRIPTION The TPS55383 and TPS55386 are dual output, non-synchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of t...