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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 15 Vout (Min) (V) 0.6 Vout (Max) (V) 12.75 Iout (Max) (A) 20 Iq (Typ) (mA) 2.5 Iq (Typ) (uA) 2500 Switching frequency (Min) (kHz) 300 Switching frequency (Max) (kHz) 300 Features Enable, Pre-Bias Start-Up, Synchronous Rectification Operating temperature range (C) -40 to 85 Regulated outputs (#) 1 Number of Phases 1 Rating Catalog open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

VSON (DRC) 10 9 mm² 3 x 3 open-in-new Find other Buck controllers (external switch)

Features

  • Input Operating Voltage Range: 4.5 V to 15 V
  • Reference 0.591 V ±1%
  • Voltage Mode Control
  • Internal 5-V Regulator For Internal Housekeeping, Driver Power and Light External Loads
  • Selectable Short-Circuit Protection Thresholds
  • Pre-Bias Ouput Safe
  • Fixed Switching Frequency of 300 kHz
  • Internal Soft Start
  • Small 3 mm × 3 mm, 10-Pin SON Package
  • Bootstrapped Drivers for N-Channel MOSFET
  • Adaptive Anti-Cross Conduction
  • Internal Bootstrap Diode
  • 1.2-A Drivers for Decreased Switching Loss

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Description

The TPS40190 is a cost-optimized synchronous buck controller that operates from 4.5 V to 15 V nominally, and implements a fixed frequency voltage mode power supply. The controller uses an adaptive anti-cross conduction scheme to prevent both the high-side and the rectifier MOSFET to be turned on at the same time, preventing shoot through current in the two MOSFETs.

The controller also provides a short circuit protection threshold that is user selectable between one of three values. The protection level is set with a single external resistor connected from COMP to GND. During start-up, the impedance connected to COMP is sensed, and the information is decoded to select one of the three thresholds. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This provides limited power dissipation in the event of a sustained fault.

The TPS40190 provides strong drivers to minimize switching losses in the power stage, reducing heat build up in the MOSFETs and allowing larger MOSFETs to be used without undue switching time penalty.

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Technical documentation

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Type Title Date
* Datasheet TPS40190 4.5-V to 15-V Input, Voltage-Mode, Synchronous Buck Controller datasheet (Rev. D) Jun. 06, 2019
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application notes Enabling Multiple TPS4019x Devices Mar. 29, 2012
More literature Исходные проекты ll May 13, 2011
More literature TPS40190DRC Test Report Feb. 15, 2008
User guides Using the TPS40190 Sep. 16, 2005

Design & development

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

Design tools & simulation

SIMULATION MODELS Download
SLUM371A.ZIP (17 KB) - PSpice Model
SIMULATION MODELS Download
SLVC179D.ZIP (40 KB) - PSpice Model
SIMULATION MODELS Download
SLVC180C.TSC (383 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVM014B.TSC (610 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVM015A.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVM016B.ZIP (37 KB) - TINA-TI Spice Model
SIMULATION TOOLS 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 TOOLS Download
SLUC263D.ZIP (131 KB)

Reference designs

REFERENCE DESIGNS Download
Multiphase, Sync Buck, Buck-Boost, Boost for IP Converter (25V @ 1A)
PMP3061 — PMP3061 is a multiple output power supply that supports a number of different rails. The input for this design is 12V with the following devices and outputs TPS40140 (1.2V@40A), TPS40190 (3.3V@6A), TPS54350 (-5V@200mA), TPS40210 (25V@1A), TPS5430 (-12V@200mA). The supply has a range of topologies (...)
Design files
REFERENCE DESIGNS Download
12VDC Input, 6A White LED Driver With PWM Dimming
PMP4217 — This reference design drives a single white LED at 6A or 3A from a 12Vdc input. The TPS40190 controls a synchronous buck power stage with over 92 percent efficiency. The LED current can be toggled between two levels (3A and 6A) through a simple logic signal. The LED can also be PWM-dimmed through an (...)

CAD/CAE symbols

Package Pins Download
VSON (DRC) 10 View options

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