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TPS40170-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS40170-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 49 page TPS40170-Q1 www.ti.com SLVSB90A – JANUARY 2012 – REVISED MARCH 2012 4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER Check for Samples: TPS40170-Q1 1 FEATURES APPLICATIONS 2 • Qualified for Automotive Applications • POL Modules • AEC-Q100 Qualified With the Following • Wide Input Voltage, High-Power-Density Results: DC/DC Converter DESCRIPTION – Device Temperature Grade 1: TPS40170-Q1 is a full-featured, synchronous PWM – –40°C to +125°C Ambient Operating buck controller that operates at an input voltage Temperature Range between 4.5 V and 60 V and is optimized for high- – Device HBM ESD Classification Level H1C power-density, high-reliability dc-dc converter applications. The controller implements voltage-mode – Device CDM ESD Classification Level C3B control with input-voltage feed-forward compensation • Wide-Input Voltage Range from 4.5 V to 60 V that enables instant response to an input voltage • 600-mV Reference Voltage With 1% Accuracy change. The switching frequency is programmable • Programmable UVLO and Hysteresis from 100 kHz to 600 kHz. • Voltage-Mode Control With Voltage Feed- The TPS40170-Q1 has a complete set of system Forward protection and monitoring features such as programmable UVLO, programmable overcurrent • Programmable Frequency Between 100 kHz protection (OCP) by sensing the low-side FET, and 600 kHz selectable short-circuit protection (SCP) by sensing • Bidirectional Frequency Synchronization With the high-side FET, and thermal shutdown. The Master/Slave Option ENABLE pin allows for system shutdown in a low- • Low-Side FET Sensing Overcurrent Protection current (1-µA typical) mode. The controller supports and High-Side FET Sensing Short-Circuit pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output-voltage Protection With Integrated Thermal tracking, and adaptive dead-time control. Compensation • Programmable Closed-Loop Soft-Start TPS40170-Q1 provides accurate output-voltage regulation within 1% accuracy. Additionally, the • Supports Pre-Biased Outputs controller implements a novel scheme of bidirectional • Thermal Shutdown at 165°C With Hysteresis synchronization with one controller acting as the • Voltage Tracking master and other downstream controllers acting as slaves, synchronized to the master in-phase or 180° • Power Good out-of-phase. Slave controllers can be synchronized • ENABLE With 1-µA Low-Current Shutdown to an external clock within ±30% of the free-running • 8-V and 3.3-V LDO Output switching frequency. • Integrated Bootstrap Diode • 20-Pin 3.5-mm × 4.5-mm QFN (RGY) Package 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 © 2012, 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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