TPS40170-Q1

ACTIVE

Automotive 4.5V to 60V Synchronous Buck Controller with Voltage Tracking

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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 Adjustable Current Limit, Enable, Frequency Synchronization, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, UVLO Adjustable Duty cycle (Max) (%) 95 Operating temperature range (C) -40 to 125 Type Controller Rating Automotive 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

  • 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 1C
    • Device CDM ESD Classification Level C4B
  • 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
    and 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 4.5-mm × 3.5-mm VQFN (RGY) Package
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Description

The TPS40170-Q1 device 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 voltage change. The switching frequency is programmable from 100 kHz to 600 kHz.

The TPS40170-Q1 device 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.

The TPS40170-Q1 device 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.

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LM5141-Q1 ACTIVE Wide-Input 2.2MHz Low-Iq Synchronous Buck Controller Low Iq, wide input range synchronous buck controller.

Technical documentation

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
$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 (...)

Design tools & simulation

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

Reference designs

REFERENCE DESIGNS Download
TPS40170 Automotive 5V Preregulator Reference Design
PMP30101 — This buck converter operates over a 6V - 36V input range and delivers 5V @ 8A. The design is optimized for an average current of 5.5A and peak currents up to 10A. The temperature rise at nominal current is about 20K.
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

CAD/CAE symbols

Package Pins Download
VQFN (RGY) 20 View options

Ordering & quality

Support & training

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