TPS40009

ACTIVE

2.25V-5.5V, 600 kHz, Synchronous Buck Controller, Source/ Sink, Prebias Operation

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Product details

Parameters

Vin (Min) (V) 2.25 Vin (Max) (V) 5.5 Vout (Min) (V) 0.7 Vout (Max) (V) 4 Iout (Max) (A) 15 Iq (Typ) (mA) 1.5 Iq (Typ) (uA) 1500 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 600 Features Enable, 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

HVSSOP (DGQ) 10 15 mm² 3 x 4.9 open-in-new Find other Buck controllers (external switch)

Features

  • Operating Input Voltage 2.25 V to 5.5 V
  • Output Voltage as Low as 0.7 V
  • 1% Internal 0.7 V Reference
  • Predictive Gate Drive™ N-Channel MOSFET Drivers for Higher Efficiency
  • Externally Adjustable Soft-Start and Overcurrent Limit
  • Fixed-Frequency Voltage-Mode Control
    • TPS40007, 300 kHz
    • TPS40009, 600 kHz
  • Source/Sink with VOUT Prebias
  • 10-Lead MSOP PowerPad™ Package for Higher Performance
  • Thermal Shutdown
  • Internal Boostrap Diode
  • APPLICATIONS
    • Networking Equipment
    • Telecom Equipment
    • Base Stations
    • Servers
    • DSP Power
    • Power Modules

PowerPAD and Predictive Gate Drive are trademarks of Texas Instruments Incorporated.

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Description

The TPS4000x are controllers for low-voltage, non-isolated synchronous buck regulators. These controllers drive an N-channel MOSFET for the primary buck switch, and an N-channel MOSFET for the synchronous rectifier switch, thereby achieving very high-efficiency power conversion. In addition, the device controls the delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on in such a way as to minimize diode losses (both conduction and recovery) in the synchronous rectifier with TI’s proprietary Predictive Gate Drive™ technology. The reduction in these losses is significant and increases efficiency. For a given converter power level, smaller FETs can be used, or heat sinking can be reduced or even eliminated.

The current-limit threshold is adjustable with a single resistor connected to the device. The TPS4000x controllers implement a closed-loop soft start function. Startup ramp time is set by a single external capacitor connected to the SS/SD pin. The SS/SD pin is also used for shutdown.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet LOW INPUT BUCK CONTROLLER, TPS40007/9 datasheet (Rev. B) Feb. 08, 2005
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
User guides Using the TPS40009EVM-001 Mar. 03, 2004

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 TPS40007 is a voltage-mode, synchronous buck PWM controller that uses TI's proprietary Predictive Gate Drive™ technology to wring maximum efficiency from step-down converters. This controller provides a bootstrap circuit to allow the use of an N-channel MOSFET as the topside buck switch to (...)
Features

The specification for this board is as follows:

  • VIN = 3.3 V to 5 V
  • VOUT = 2.5 V ±3%
  • IOUT = 0 A to 10 A
  • Efficiency = > 95% with VIN = 3.3 V, ILOAD = 4 A
  • Output voltage ripple < 2% VOUT
  • Power semiconductor devices: Each MOSFET is a single SO-8 package

EVALUATION BOARDS Download
document-generic User guide
49
Description

The TPS40009 is a voltage-mode, synchronous buck PWM controller that uses TI's proprietary Predictive Gate Drive™ technology to wring maximum efficiency from step-down converters. This controller provides a bootstrap charging circuit to allow the use of an N-channel MOSFET as the topside buck (...)

Features
  • VIN = 3.0 V to 3.6 V
  • VOUT = 1.2 V ± 3%
  • 0 A IOUT < 5 A
  • Efficiency > 90% with a load of 2 A
  • Output voltage ripple < 2% VOUT
  • Physical size < 1 square inch circuit area

Design tools & simulation

SIMULATION MODELS Download
SLVC175B.ZIP (228 KB) - PSpice Model
SIMULATION MODELS Download
SLVM036A.TSC (62 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVM037A.ZIP (7 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)

CAD/CAE symbols

Package Pins Download
HVSSOP (DGQ) 10 View options

Ordering & quality

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