Inicio Gestión de la energía AC/DC & DC/DC converters (integrated FET)
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Gestión de la energía
AC/DC & DC/DC converters (integrated FET)

TPS62690

ACTIVO

Convertidor reductor de 500 mA, 4 MHz, tensión de salida de 2.85 V y alta eficiencia en encapsulado

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TPS62690

ACTIVO
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Detalles del producto

Iout (max) (A) 0.5 Vin (min) (V) 2.3 Vin (max) (V) 4.8 Topology Buck Type Converter Switching frequency (min) (kHz) 3600 Switching frequency (max) (kHz) 4400 Features Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Output discharge, Spread Spectrum, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 2.85 Vout (max) (V) 2.85 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.000019
Iout (max) (A) 0.5 Vin (min) (V) 2.3 Vin (max) (V) 4.8 Topology Buck Type Converter Switching frequency (min) (kHz) 3600 Switching frequency (max) (kHz) 4400 Features Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Output discharge, Spread Spectrum, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 2.85 Vout (max) (V) 2.85 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.000019
DSBGA (YFF) 6 1.4000000000000001 mm² 1 x 1.4000000000000001
  • 95% Efficiency at 4MHz Operation
  • 19µA Quiescent Current
  • 4MHz Regulated Frequency Operation
  • High Duty-Cycle Operation
  • ±2% Total DC Voltage Accuracy
  • Load and Line Transient
  • Excellent AC Load Regulation
  • Low Ripple Light-Load PFM Mode
  • ≥40dB VIN PSRR (1kHz to 10kHz)
  • Internal Soft Start, 250-µs Start-Up Time
  • Integrated Active Power-Down Sequencing (Optional)
  • Current Overload and Thermal Shutdown Protection
  • Three Surface-Mount External Components Required
    (One 2012 MLCC Inductor, Two 0402 Ceramic Capacitors)
  • Complete Sub 1-mm Component Profile Solution
  • Total Solution Size <12 mm2
  • Available in a 6-Pin NanoFree (CSP)
  • 95% Efficiency at 4MHz Operation
  • 19µA Quiescent Current
  • 4MHz Regulated Frequency Operation
  • High Duty-Cycle Operation
  • ±2% Total DC Voltage Accuracy
  • Load and Line Transient
  • Excellent AC Load Regulation
  • Low Ripple Light-Load PFM Mode
  • ≥40dB VIN PSRR (1kHz to 10kHz)
  • Internal Soft Start, 250-µs Start-Up Time
  • Integrated Active Power-Down Sequencing (Optional)
  • Current Overload and Thermal Shutdown Protection
  • Three Surface-Mount External Components Required
    (One 2012 MLCC Inductor, Two 0402 Ceramic Capacitors)
  • Complete Sub 1-mm Component Profile Solution
  • Total Solution Size <12 mm2
  • Available in a 6-Pin NanoFree (CSP)

The TPS6269x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6269x supports up to 600-mA load current, and allows the use of low cost chip inductor and capacitors.

The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. Different fixed voltage output versions are available from 2.2V to 2.9V.

The TPS6269x operates at a regulated 4-MHz switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range.

The PFM mode extends the battery life by reducing the quiescent current to 19µA (typ) during light load operation. For noise-sensitive applications, the device can be forced into fixed frequency PWM mode by pulling the MODE pin high. This feature, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.

The TPS6269x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6269x supports up to 600-mA load current, and allows the use of low cost chip inductor and capacitors.

The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. Different fixed voltage output versions are available from 2.2V to 2.9V.

The TPS6269x operates at a regulated 4-MHz switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range.

The PFM mode extends the battery life by reducing the quiescent current to 19µA (typ) during light load operation. For noise-sensitive applications, the device can be forced into fixed frequency PWM mode by pulling the MODE pin high. This feature, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.
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Documentación técnica

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Tipo Título Fecha
* Data sheet 500-mA/600-mA, 4-MHz High-Efficiency Step-Down Converter datasheet (Rev. B) 09 ene 2012
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 dic 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 jun 2018
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 24 oct 2017
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 24 oct 2016
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 17 ago 2015
Analog Design Journal Five steps to a great PCB layout for a step-down converter 29 ene 2015
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 13 ene 2012
User guide TPS6269xEVM-076 Evaluation Module (Rev. A) 26 oct 2011
User guide TPS6269xEVM-076 Evaluation Module 15 sep 2011
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 jun 2011

Diseño y desarrollo

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Placa de evaluación

TPS62690EVM-076 — Módulo de evaluación para convertidor reductor TPS62690 de 500 mA, 4 MHz, tensión de salida de 2.85 

The TPS6269xEVM-076 is a fully assembled and tested platform for evaluating the performance of the TPS6269x high-frequency, synchronous, step-down, dc-dc converters optimized forbattery-powered portable applications. This user’s guide document includes schematic diagrams, a printed-circuit board (...)

Guía del usuario: PDF
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Placa de evaluación

TPS62692EVM-076 — Placa de módulo de evaluación TPS62692EVM-076 de convertidor reductor VIN de alta eficiencia

Efficiency VIN Step Down Converter Evaluation Module Board

Demonstrate TPS62690/1/2/3 high efficiency VIN step down converter.
Guía del usuario: PDF
No disponible en TI.com
Archivo Gerber

PWR076A Gerbers

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