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TPS40170

ACTIVE

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

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Data sheet

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LM5141 ACTIVE Low Iq, Wide Input Range Synchronous Buck Controller Optional spread spectrum for improved EMI in a smaller package footprint.

TPS40170

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 4.5 Vin (max) (V) 60 Vout (min) (V) 0.6 Vout (max) (V) 57 Iout (max) (A) 20 Iq (typ) (mA) 4.5 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 Control mode Voltage mode Type Controller
Vin (min) (V) 4.5 Vin (max) (V) 60 Vout (min) (V) 0.6 Vout (max) (V) 57 Iout (max) (A) 20 Iq (typ) (mA) 4.5 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 Control mode Voltage mode Type Controller
VQFN (RGY) 20 15.75 mm² 4.5 x 3.5
  • 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
  • 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

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.

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

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

Design & development

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

Evaluation board

AUTOCRANKSIM-EVM — Simulator for automotive cranking pulses evaluation module

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.

(...)

User guide: PDF
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Evaluation board

TPS40170EVM-578 — Evaluation Module for TPS40170 Synchronous PWM Buck Controller

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 (...)
User guide: PDF
Not available on TI.com
Evaluation board

TPS40170EVM-597 — Evaluation Module TPS40170 Synchronous PWM Buck Controller with NexFET™

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.

User guide: PDF
Not available on TI.com
Simulation model

TPS40170 IBIS Model

SLPM333.ZIP (37 KB) - IBIS Model
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Simulation model

TPS40170 PSpice Average Model (Rev. A)

SLUM208A.ZIP (152 KB) - PSpice Model
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Simulation model

TPS40170 PSpice Unencrypted Transient Model (Rev. C)

SLUM141C.ZIP (90 KB) - PSpice Model
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Simulation model

TPS40170 TINA-TI Average Reference Design

SLUM236.TSC (80 KB) - TINA-TI Reference Design
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Simulation model

TPS40170 TINA-TI Average Spice Model

SLUM237.ZIP (6 KB) - TINA-TI Spice Model
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Simulation model

TPS40170 TINA-TI Transient Reference Design

SLUM184.TSC (883 KB) - TINA-TI Reference Design
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Simulation model

TPS40170 TINA-TI Transient Spice Model

SLUM185.ZIP (76 KB) - TINA-TI Spice Model
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Calculation tool

Type III Compensation Calculation Tool (Rev. E)

SLUC263E.ZIP (185 KB)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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