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 Regulated outputs (#) 1 Number of Phases 1 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 600 Iq (Typ) (mA) 4.5 Features Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Duty cycle (Max) (%) 95 Operating temperature range (C) -40 to 125 Type Controller Rating Catalog Control mode Voltage Mode 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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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
LM5141 ACTIVE Low Iq, Wide Input Range Synchronous Buck Controller Low Iq, wide input range synchronous buck controller.

Technical documentation

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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 notes Implementation of micro-processor controlled wide-input-voltage, smart battery Sep. 01, 2019
Application notes Wide-Vin Battery-Charger Using SMBus MSP430 MCUs and bq Fuel Gauges (Rev. B) Jul. 12, 2019
White papers An overview of radiated EMI specifications for power supplies Jun. 05, 2018
White papers An overview of conducted EMI specifications for power supplies Feb. 01, 2018
Application notes Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout Nov. 13, 2017
Selection guides Control-Mode Quick Reference Guide (Rev. A) Sep. 14, 2017
Technical articles Optimizing layout for synchronous buck converters Nov. 25, 2016
Application notes 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 papers Choosing the Right Fixed Frequency Buck Regulator Control Strategy Oct. 02, 2015
White papers Choosing the Right Fixed Frequency Buck Regulator Control Strategy (PPT) Oct. 02, 2015
Selection guides Analog for Xilinx (R) FPGAs Selection Guide - 2015 (Rev. B) Jan. 07, 2015
Selection guides Wide VIN DC/DC power solutions: industrial, automotive, and comms applications Jun. 06, 2014
User guides TPS40170 with NexFETs 24-V Input, 5 V at 10-A Output Synchronous Buck EVM Feb. 07, 2014
Selection guides Power Management for Xilinx FPGAs Feb. 04, 2014
Application notes Creating a Dual USB Universal Car Charger From the TPS40170 and Two TPS2511 May 22, 2012
Selection guides TI's Compact Power Solution for Avnet's Xilinx Kintex-7 FPGA Board Mar. 14, 2012
Selection guides Power Management for Altera FPGAs (Rev. E) Feb. 22, 2012
User guides 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 BOARDS Download
document-generic User guide
$149.00
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 BOARDS Download
document-generic User guide
$49.00
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 BOARDS Download
document-generic User guide
$49.00
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 MODELS Download
SLPM333.ZIP (37 KB) - IBIS Model
SIMULATION MODELS Download
SLUM141B.ZIP (84 KB) - PSpice Model
SIMULATION MODELS Download
SLUM184.TSC (883 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLUM185.ZIP (76 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLUM208A.ZIP (152 KB) - PSpice Model
SIMULATION MODELS Download
SLUM236.TSC (80 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLUM237.ZIP (6 KB) - TINA-TI Spice Model
CALCULATION TOOLS Download
SLUC263D.ZIP (131 KB)

Reference designs

REFERENCE DESIGNS Download
24V to 5V@4A Reference Design for Industrial Robots and Motor Drives
PMP15025 — The PMP15025 comprises a single phase synchronous buck converter that supplies a stable 5V @ 4A solution from a 24V input. The design features high efficiency and power density, which are suitable for industrial automation applications, such as robotics and motor drives.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
24V to 12V@4.5A Synchronous Buck Converter Reference Design
PMP10902 — This synchronous buck converter supplies 12V @ 4.5A from a 12.5V to 24V input. This converter was optimized to provide high efficiency in a small footprint for applications such as portable radios.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
48V Input Synchronous Buck to 5V@10A Converter Reference Design
PMP11099 This synchronous buck converter operates over a 36V - 51V input range and delivers 5V @ 10A continuous. It achieves a peak efficiency of 92% at 8A and 48Vin. Other features include low output ripple voltage, excellent transient response and small size.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
24V Input Synchronous Buck to 12V at 8A Converter Reference Design
PMP10799 — This synchronous buck converter operates over a 19-V to 32-V input range and delivers 12 V at 8-A continuous. It achieves an efficiency of greater than 97% between 4.5 A to 8 A at 24 Vin. Other features include low-output ripple voltage, excellent transient response, and small size.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
TPS40170 Synchronous Buck Reference Design
PMP8629 This buck converter operates over a 38-V to 42-V input range and delivers 32 V at 5 A.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Universal uP Controlled Battery Charger 24Vin 10 Aout max, 5/12V 2A & 5V 4A, 2 USB Ports Ref Design
PMP9668 BQ24745 is a host controlled synchronous buck battery charger capable of charging batteries at up to 19.2V and up to 8 A normally, extended to 10 A with use of 8 mOhm battery sense resistor. The power train is capable of 8 A with convection only cooling and 10 A with moderate fan cooling (~200 LFM (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
48V Input Synchronous Buck to 24V@12A (15A pk) Converter Reference Design
PMP11494 — This synchronous buck converter operates over a 45V - 51V input range and delivers 24V @ 12A continuous (15A peak, 1 second). This converter is very efficient; achieving greater than 98% between 5.5A - 15A. The high efficiency helps reduce component temperature rise, improving operational life. Low (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
55 Vin, Low Noise Synchronous Buck Converter Reference Design with 6V, 7A Output
PMP10898 PMP10898 was designed to power a high frequency radio transmitter with up to 7 A off 6 V powered from "Telecom 48V".  This application needs both low noise and excellent dynamic response when load is switched from near zero to full. Also it needs satisfactory thermal performance for outdoors (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Voltage Synchronous Buck, 5V/9A out of 48V Telecom Input Reference Design
PMP10117 This reference design delivers 5.1V with 9A output current out of 48V. It could be also used for 48V automotive bus voltage.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
40W Buck Converter Powered out of 48V Reference Design
PMP10135 PMP10035 is a sycnchronous buck converter with 48V input voltage and 31V output voltage. Due to ceramic capacitors only this design is suitable for automotive applications (48V bus). With  switching frequency of 400kHz, the efficiency is higher than 96% at full load.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Highly Efficient 100W Synchronous DC/DC Buck Reference Design for 40V Input Applications
PMP7165 This stepdown Synchronous DC-DC Solution  provides 5V output at 20 A from a 40V/42V input with maximum efficiency.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Cranking Simulator Reference Design for Automotive Applications
PMP7233 This design is a cranking simulator which generates three different cranking pulses to test automotive systems up to 50W. A microcontroller sets the output voltage of a synchronous buck in the range of 2-15V accordingly to the programmed curves. Output current is in the range of 3.3-25A. It is a (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
12VDC in -5V5A buck-boost converter for medical application
PMP4370 — PMP4370 converts 12Vdc voltage to non-isolate negative 5V5A. Full feature synchronous PWM buck controller TPS40170 and CSD87350 are combined together to achieve the inverting buck-boost topology. The efficiency is >92% @ full load. PMP4370 has extra low output ripple and noise(<20mV) that it can be (...)
Design files
REFERENCE DESIGNS Download
Positive 12V to -4.35V/15A Buck-Boost Converter Reference Design
PMP8928 — This reference design uses the TPS40170 sync buck controller to generate a -4.35V/15A output from a +12V input voltage. This circuit achieves greater than 94% efficiency at full load.
REFERENCE DESIGNS Download
DC/DC Sync Buck Converter 48Vin to 8-30Vout 12A Reference Design
PMP8849 — The TPS40170 controller with a pair 60V FETs from our CSD1835x offerings provide a complete high efficiency solution for non-isolated DC/DC needs off a regulated 48V input voltage. The attached design targeted 30V output at 12A and achieved 98% conversion efficiency. The same design was then (...)
Design files
REFERENCE DESIGNS Download
High Efficiency Syncronous Buck Regulator (12V/15V @ 5A)
PMP8493 — This synchronous buck regulator provides 96% efficiency when regulating 24Vin to 15V out @ 5A. The output can be set to regulate 12V , if desired. PMP8493 uses TPS40170 wide input synchronous buck controller.
Design files
REFERENCE DESIGNS Download
Dual-Port Automotive USB Charger Reference Design
PMP7390 Using the TPS40170 PWM Buck Controller, this power management reference design provides a regulated 5V to power 2 USB ports at 2.1A each (total 4.2A) in a small form-factor. The design has been optimized for a nominal 12V input and accepts 8-60V.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
240W sync buck converter achieves 98% efficiency
PMP6703 — This reference design uses the TPS40170 sync-buck voltage-mode controller to step 24V nominal (35V max) input down to 12V/20A. An external control signal can allow the circuit to enter hysteretic-mode operation while at no-load, or near no-load, to reduce the input current to less than 1mA. The (...)
Design files
REFERENCE DESIGNS Download
9V - 32V input to -28V/1.5A negative output buck-boost LED current regulator
PMP6867 — This reference design uses the TPS40170 sync buck controller in a buck-boost converter to regulate the current in a series string of 6 to 8 LEDs (-28V) at up to 1.5A. Efficiency is greater than 93%. The output current can be adjusted with an external control voltage.
REFERENCE DESIGNS Download
174W sync buck converter achieves 98% efficiency
PMP5959 — This reference design uses the TPS40170 sync buck voltage mode controller to step 35V - 45V input down to 29V/6A. The converter achieves greater than 98% efficiency at full load.
Design files
REFERENCE DESIGNS Download
48Vin, 12Vout @ 20A with 97% peak efficiency
PMP6680 — The PMP6680 non-isolated DC/DC reference design uses the TPS40170 with a 43V-53V input and a 12V output to deliver up to 20A. The design achieves around 97% peak efficiency at 12A while using surface mount power MOSFETs and ceramic output capacitors. The TPS40170 is a 4.5V to 60V input full featured (...)

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VQFN (RGY) 20 View options

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