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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS62690

現行

採用晶片級封裝的 500-mA、4-MHz、2.85 Vout 高效降壓轉換器

立即訂購
產品規格表

TPS62690

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 2.3 Vin (max) (V) 4.8 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 EMI features Spread Spectrum Control mode Voltage mode Vout (min) (V) 2.85 Vout (max) (V) 2.85 Iq (typ) (µA) 19 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 2.3 Vin (max) (V) 4.8 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 EMI features Spread Spectrum Control mode Voltage mode Vout (min) (V) 2.85 Vout (max) (V) 2.85 Iq (typ) (µA) 19 Duty cycle (max) (%) 100
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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類型 標題 日期
* Data sheet 500-mA/600-mA, 4-MHz High-Efficiency Step-Down Converter datasheet (Rev. B) 2012年 1月 9日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 2018年 6月 22日
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017年 10月 24日
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 2015年 8月 17日
Analog Design Journal Five steps to a great PCB layout for a step-down converter 2015年 1月 29日
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012年 1月 13日
User guide TPS6269xEVM-076 Evaluation Module (Rev. A) 2011年 10月 26日
User guide TPS6269xEVM-076 Evaluation Module 2011年 9月 15日
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 2011年 6月 17日

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開發板

TPS62690EVM-076 — 適用於 TPS62690、500-mA、4-MHz、2.85-Vout 高效率降壓轉換器的評估模組

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 (...)

使用指南: PDF
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開發板

TPS62692EVM-076 — TPS62692EVM-076 高效率 VIN 降壓轉換器評估模組板

Efficiency VIN Step Down Converter Evaluation Module Board

Demonstrate TPS62690/1/2/3 high efficiency VIN step down converter.
使用指南: PDF
TI.com 無法提供
Gerber 檔案

PWR076A Gerbers

SLVC551.ZIP (501 KB)
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