TPS40304A

ACTIVE

3V to 20V input, 600kHz, 25A synchronous buck controller with FSS, operating from -40 to 145 degC

Top

Product details

Parameters

Vin (Min) (V) 3 Vin (Max) (V) 20 Vout (Min) (V) 0.6 Vout (Max) (V) 18 Iout (Max) (A) 25 Iq (Typ) (mA) 2.5 Iq (Typ) (uA) 2500 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 600 Features Enable, Power Good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification Operating temperature range (C) -40 to 145 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 Voltage Range from 3 V to 20 V
  • Fixed 600-kHz Switching Frequency
  • High- and Low-Side FET RDS(on) Current Sensing
  • Programmable Thermally Compensated OCP Levels
  • Programmable Soft-Start
  • 591-mV, 1% Reference Voltage
  • Voltage Feed-Forward Compensation
  • Supports Pre-Biased Output
  • Frequency Spread Spectrum
  • Thermal Shutdown Protection at 145°C
  • 10-Pin 3 mm × 3 mm SON Package with Ground
    Connection to Thermal Pad
  • APPLICATIONS
    • POL Modules
    • Printer
    • Digital TV
    • Telecom

open-in-new Find other Buck controllers (external switch)

Description

The TPS40304A is a cost-optimized synchronous buck controller that operates from 3-V to 20-V input. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to input voltage change. The switching frequency is fixed at 600 kHz.

Frequency Spread Spectrum feature adds dither to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS40304A offers design with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.

The OCP level is programmed by a single external resistor connected from LDRV pin to circuit ground. During initial power on, the TPS40304A enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS40304A then enters a shutdown and restart cycle until the fault is removed.

open-in-new Find other Buck controllers (external switch)
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 1
Type Title Date
* Datasheet 3-V TO 20-V INPUT SYNCHRONOUS BUCK CONTROLLER. datasheet Jan. 27, 2010

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
Description

The TPS40304EVM-353 evaluation module (EVM) is a synchronous buck converter providing a fixed 1.2-V output at up to 20A from a 12-V input bus. The EVM is designed to start-up from a single supply; so, no additional bias voltage is required for start-up. The module uses the TPS40304 high performance (...)

Features
  • 8-V to 14-V input voltage rating
  • 1.2-V ± 2% output voltage rating
  • 20-A steady state load current
  • 600-kHz switching frequency
  • Simple access to IC features including Power Good, Enable, Soft-Start, and Error Amplifier
  • Convenient test points for simple, non-invasive measurements of converter performance

Design tools & simulation

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
  • (...)

Reference designs

REFERENCE DESIGNS Download
Design files
REFERENCE DESIGNS Download
Design files

CAD/CAE symbols

Package Pins Download
VSON (DRC) 10 View options

Ordering & quality

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos