TPS40170

ACTIVE

4.5 V to 60 V Wide-Input Synchronous PWM Buck Controller

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 60 Vout (Min) (V) 0.6 Vout (Max) (V) 57 Iout (Max) (A) 20 Iq (Typ) (uA) 4500 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 600 Features Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Number of Phases 1 Rating Catalog open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

VQFN (RGY) 20 16 mm² 4.5 x 3.5 open-in-new Find other Buck controllers (external switch)

Features

  • 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
  • Bi-directional -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
  • Powergood
  • ENABLE with 1-µA Low Current Shutdown
  • 8.0-V and 3.3-V LDO Output
  • Integrated Bootstrap Diode
  • 20-Pin 3.5 mm × 4.5 mm VQFN (RGY) Package
  • Create a Custom Design with WEBENCH Tools

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Description

TPS40170 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 input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz.

The TPS40170 has a complete set of system protection and monitoring features such as programmable undervoltage lockout (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.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS40170 4.5 V to 60 V, Wide-Input Synchronous PWM Buck Controller datasheet (Rev. B) Dec. 29, 2014
Application note Implementation of micro-processor controlled wide-input-voltage, smart battery Sep. 01, 2019
Application note Wide-Vin Battery-Charger Using SMBus MSP430 MCUs and bq Fuel Gauges (Rev. B) Jul. 12, 2019
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
White paper An overview of radiated EMI specifications for power supplies Jun. 05, 2018
White paper An overview of conducted EMI specifications for power supplies Feb. 01, 2018
Application note Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout Nov. 13, 2017
Selection guide Control-Mode Quick Reference Guide (Rev. A) Sep. 14, 2017
Technical articles Optimizing layout for synchronous buck converters Nov. 25, 2016
Application note Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics Jul. 21, 2016
Technical articles Power Tips: Simple PSRR measurement with a frequency analyzer May 25, 2016
Technical articles GaN to the rescue! Part 2: Measurements Jan. 07, 2016
Technical articles GaN to the rescue! Part 1: Body-diode reverse recovery Oct. 28, 2015
White paper Choosing the Right Fixed Frequency Buck Regulator Control Strategy Oct. 02, 2015
White paper Choosing the Right Fixed Frequency Buck Regulator Control Strategy (PPT) Oct. 02, 2015
User guide TPS40170 with NexFETs 24-V Input, 5 V at 10-A Output Synchronous Buck EVM Feb. 07, 2014
Application note Creating a Dual USB Universal Car Charger From the TPS40170 and Two TPS2511 May 22, 2012
User guide Using the TPS40170EVM-578 Evaluation Module Jan. 24, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
149
Description

The Cranking simulator generates preprogrammed cranking pulses, resembling typical pulse as seen on Car-Battery during cranking (e.g. during start-stop operation). Other pulses can be configured via source-code change, which makes it applicable for any supply-voltage profile in the range of 2.18V.

(...)

Features
  • 3 pre-programmed typical cranking pulses
  • Other pulses individually programmable via firmware-change
  • up to 50W output power
  • Adjustable repetition rate
  • Continuous or single-shot operation
EVALUATION BOARD Download
document-generic User guide
49
Description
The TPS40170EVM-578 evaluation module is a fully assembled and tested circuit for evaluating the TPS40170 Wide Input Synchronous PWM Buck Controller. The TPS40170EVM-578 converts a 10V to 60V input to a 5V output at 6A. The minimum input voltage can be lowered to 6V with a simple UVLO resistor (...)
Features
  • Wide-Input Voltage Range from 4.5V to 60V
  • 600mV Reference Voltage with 1% Accuracy
  • Programmable UVLO and Hysteresis
  • Voltage Mode Control With Voltage Feed Forward
  • Programmable Frequency Between 100 kHz and 600 kHz
  • Low-side FET Sensing Overcurrent Protection and High-side FET Sensing Short-circuit (...)
EVALUATION BOARD Download
document-generic User guide
49
Description

The TPS40170EVM-597 is a fully assembled and tested circuit for evaluating the TPS40170 synchronous step-down controller with two NexFET devices CSD18537NQ5A and CSD18563Q5A. The TPS40170EVM-597 operates from a 10V to 36V input (24V nominal) and provides a 5V output up to 10A.

Features
  • Designed with low gate charge (Qg) NexFET devices to minimize power losses
  • Wide 4.5 V to 36 V input voltage range
  • Integrated high-side and low-side N channel FET drivers
  • Voltage mode control with voltage feed forward
  • Low-side FET sensing Over-current Protection and high-side FET sensing Short-circuit (...)

Design tools & simulation

SIMULATION MODEL Download
SLPM333.ZIP (37 KB) - IBIS Model
SIMULATION MODEL Download
SLUM141C.ZIP (90 KB) - PSpice Model
SIMULATION MODEL Download
SLUM184.TSC (883 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLUM185.ZIP (76 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLUM208A.ZIP (152 KB) - PSpice Model
SIMULATION MODEL Download
SLUM236.TSC (80 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLUM237.ZIP (6 KB) - TINA-TI Spice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOL Download
SLUC263D.ZIP (131 KB)

Reference designs

Many TI reference designs include the TPS40170 Use our reference design selection tool to review and identify designs that best match your application and parameters.

CAD/CAE symbols

Package Pins Download
VQFN (RGY) 20 View options

Ordering & quality

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