Texas Instruments TPS40170-Q1

Description

TPS40170-Q1 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60 V and is optimized for high– power-density, high-reliability dc-dc converter applications. The controller implements voltage-mode control with input-voltage feed forward compensation that enables instant response to an input voltagechange. The switching frequency is programmable from 100 kHz to 600 kHz.The TPS40170-Q1 has a complete set of system protection and monitoring features such as programmable UVLO, programmable overcurrent protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing the high-side FET, and thermal shutdown. The ENABLE pin allows for system shutdown in a low current (1-µA typical) mode. The controller supports pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output-voltage tracking, and adaptive dead-time control.TPS40170-Q1 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.

Features

• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
• Device Temperature Grade 1:
• –40°C to +125°C Ambient Operating Temperature Range
• Device HBM ESD Classification Level H1C
• Device CDM ESD Classification Level C3B
• Wide-Input Voltage Range from 4.5 V to 60 V
• 600-mV Reference Voltage With 1% Accuracy
• Programmable UVLO and Hysteresis
• Voltage-Mode Control With Voltage Feed-Forward
• Programmable Frequency Between 100 kHz and 600 kHz
• Bidirectional Frequency Synchronization With Master/Slave Option
• Low-Side FET Sensing Overcurrent Protection and High-Side FET Sensing Short-Circuit Protection With Integrated Thermal Compensation
• Programmable Closed-Loop Soft-Start
• Supports Pre-Biased Outputs
• Thermal Shutdown at 165°C With Hysteresis
• Voltage Tracking
• Power Good
• ENABLE With 1-µA Low-Current Shutdown
• 8-V and 3.3-V LDO Output
• Integrated Bootstrap Diode
• 20-Pin 3.5-mm × 4.5-mm QFN (RGY) Package

Typical applications

• Advanced Driver Assistance System (ADAS)
• Automotive Infotainment and Cluster

More information

• Datasheet
• IC product information