• Product Introduction

TPS54286 

Double A Asynchronous Converter

illustrate   TPS54283 and TPS54286 are dual-output asynchronous step-down converters that support 2-A output applications, capability from 4.5 V to 28 V input voltage, and require output voltages at 0.8 V and 90% input voltage. With internally determined operating frequency, soft start-up time and control loop compensation, these converters offer many functions with minimal external components. Channel 1 overcurrent protection is set at 3 A, while channel 2 overcurrent protection level is pinned to ground, BP selection, or suspended by connection. The horizontal setting is used in applications where the two outputs full load capacity required to allow external components not to foul up.   characteristic   4.5 - V to 28 V input range Output voltage range 0.8 V to 90% input voltage Output currents up to 2 A Two fixed switching frequency versions: TPS54283: 300 kHz TPS54286: 600 kHz Two overcurrent protection (output 2) selectable levels 0.8 – 1.5% of V, voltage reference Internal soft start of 2.1 ms Dual PWM outputs operate in a 180° off-phase operation Proportional or sequential start mode is available from a single pin 100 m internal high-side MOSFET Current mode control Internal compensation (see page 16) The pulse is protected by pulse overcurrent Thermal shutdown protection at 148°C The 14-pin HTSSOP package will PowerPAD™ apply Stb digital television