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TPS40170-EP Datasheet(PDF) 1 Page - Texas Instruments |
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TPS40170-EP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 50 page TPS40170-EP www.ti.com SLVSBT7A – MARCH 2013 – REVISED APRIL 2013 4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER Check for Samples: TPS40170-EP 1 FEATURES 2 • Wide-Input Voltage Range from 4.5 V to 60 V SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS • 600-mV Reference Voltage With 1% Accuracy • Controlled Baseline • Programmable UVLO and Hysteresis • One Assembly and Test Site • Voltage-Mode Control With Voltage Feed- Forward • One Fabrication Site • Programmable Frequency Between 100 kHz • Available in Military (–55°C to 125°C) and 600 kHz Temperature Range • Bidirectional Frequency Synchronization With • Extended Product Life Cycle Master/Slave Option • Extended Product-Change Notification • Low-Side FET Sensing Overcurrent Protection • Product Traceability and High-Side FET Sensing Short-Circuit Protection With Integrated Thermal DESCRIPTION Compensation TPS40170 is a full-featured, synchronous PWM buck • Programmable Closed-Loop Soft-Start controller that operates at an input voltage between 4.5 V and 60 V and is optimized for high-power- • Supports Pre-Biased Outputs density, high-reliability dc-dc converter applications. • Thermal Shutdown at 165°C With Hysteresis The controller implements voltage-mode control with • Voltage Tracking input-voltage feed-forward compensation that enables instant response to an input voltage change. The • Power Good switching frequency is programmable from 100 kHz to • ENABLE With 1-µA Low-Current Shutdown 600 kHz. • 8-V and 3.3-V LDO Output The TPS40170 has a complete set of system • Integrated Bootstrap Diode protection and monitoring features such as • 20-Pin 3.5-mm × 4.5-mm QFN (RGY) Package programmable UVLO, programmable overcurrent protection (OCP) by sensing the low-side FET, APPLICATIONS selectable short-circuit protection (SCP) by sensing the high-side FET, and thermal shutdown. The • POL Modules ENABLE pin allows for system shutdown in a low- • Wide Input Voltage, High-Power-Density current (1-µA typical) mode. The controller supports DC/DC Converter pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output-voltage tracking, and adaptive dead-time control. TPS40170 provides accurate output-voltage regulation within 1% accuracy. Additionally, the controller implements a novel scheme of bidirectional synchronization with one controller acting as the master and other downstream controllers acting as slaves, synchronized to the master in-phase or 180° out-of-phase. Slave controllers can be synchronized to an external clock within ±30% of the free-running switching frequency. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 NexFET is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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