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TPS40170 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS40170 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 49 page  TPS40170 www.ti.com SLUS970 – MARCH 2011 4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER Check for Samples: TPS40170 1 FEATURES DESCRIPTION TPS40170 is a full-featured, synchronous PWM buck • Wide-Input Voltage Range from 4.5 V to 60 V controller that operates at an input voltage between • 600-mV Reference Voltage with 1% Accuracy 4.5 V and 60 V and is optimized for high- • Programmable UVLO and Hysteresis power-density, high-reliability DC/DC converter applications. The controller implements voltage-mode • Voltage Mode Control With Voltage Feed control with input-voltage feed-forward compensation Forward that enables instant response to input voltage • Programmable Frequency Between 100 kHz change. The switching frequency is programmable and 600 kHz from 100 kHz to 600 kHz. • Bi-directional -Frequency Synchronization The TPS40170 has a complete set of system With Master/Slave Option protection and monitoring features such as • Low-side FET Sensing Overcurrent Protection programmable UVLO, programmable overcurrent and High-Side FET Sensing Short-Circuit protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing Protection With Integrated Thermal the high-side FET and thermal shutdown. The Compensation ENABLE pin allows for system shutdown in a • Programmable Closed Loop Soft-Start low-current (1- µA typical) mode. The controller • Supports Pre-Biased Outputs supports pre-biased output, provides an open-drain PGOOD signal, and has closed loop soft-start, output • Thermal Shutdown at 165 °C with Hysteresis voltage tracking and adaptive dead-time control. • Voltage Tracking TPS40170 provides accurate output voltage • Power Good regulation via 1% ensured accuracy. Additionally, the • ENABLE with 1- µA Low-Current Shutdown controller implements a novel scheme of bi-directional • 8.0-V and 3.3-V LDO Output synchronization with one controller acting as the master and other downstream controllers acting as • Integrated Bootstrap Diode slaves synchronized to the master in-phase or 180 ° • 20-Pin 3.5 mm × 4.5 mm QFN (RGY) Package out-of-phase. Slave controllers can be synchronized to an external clock within ±30% of the free running APPLICATIONS switching frequency. • POL Modules • Wide Input Voltage, High-Power Density DC/DC Converters for Industrial, Networking and Telecomm Equipment 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. PRODUCTION DATA information is current as of publication date. Copyright © 2011, 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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