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DC/DC 轉換器

TPS62140A

現行

採用 3x3 QFN 封裝且具備 DCS-Control 的 3–17V 2A 降壓轉換器

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
TPS62147 現行 採用 2x3QFN 封裝且具 1% 精確度和 PFM/強制 PWM 的 3-17V 2.0A 降壓轉換器 Forced PWM in a smaller package.
功能相似於所比較的產品。
TPS62902 現行 採用 1.5-mm x 2-mm QFN 封裝的 3-V 至 17-V 輸入、2-A 高效低 IQ 降壓轉換器 Improved efficiency, smaller size and lower IQ.

TPS62140A

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 6.3 Vout (min) (V) 0.9 Features Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification, Tracking, Voltage Margining Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000017 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 6.3 Vout (min) (V) 0.9 Features Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification, Tracking, Voltage Margining Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000017 Duty cycle (max) (%) 100
VQFN (RGT) 16 9 mm² (3 mm × 3 mm)
  • DCS-Control™ topology
  • Input voltage range: 3 V to 17 V
  • Up to 2-A output current
  • Adjustable output voltage from 0.9 V to 6 V
  • Pin-selectable output voltage (nominal, +5%)
  • Programmable soft start and tracking
  • Seamless power-save mode transition
  • Quiescent current of 17 µA (typical)
  • Selectable operating frequency
  • Power-good output
  • 100% duty-cycle mode
  • Short-circuit protection
  • Overtemperature protection
  • Pin-to-pin compatible with the TPS62130 and TPS62150
  • Available in a 3-mm × 3-mm, VQFN-16 package
  • Use the TPS82140 for faster designs
  • DCS-Control™ topology
  • Input voltage range: 3 V to 17 V
  • Up to 2-A output current
  • Adjustable output voltage from 0.9 V to 6 V
  • Pin-selectable output voltage (nominal, +5%)
  • Programmable soft start and tracking
  • Seamless power-save mode transition
  • Quiescent current of 17 µA (typical)
  • Selectable operating frequency
  • Power-good output
  • 100% duty-cycle mode
  • Short-circuit protection
  • Overtemperature protection
  • Pin-to-pin compatible with the TPS62130 and TPS62150
  • Available in a 3-mm × 3-mm, VQFN-16 package
  • Use the TPS82140 for faster designs

The TPS6214x family is an easy-to-use synchronous step-down DC-DC converter optimized for applications with high power density. A high switching frequency of typically 2.5 MHz allows the use of small inductors and provides fast transient response by use of the DCS-Control topology.

With their wide operating input voltage range of 3 V to 17 V, the devices are ideally suited for systems powered from either a Li-Ion or other batteries, as well as from 12-V intermediate power rails. It supports up to 2 A of continuous output current at output voltages between 0.9 V and 6 V (with 100% duty-cycle mode). The output voltage start-up ramp is controlled by the soft-start pin, which allows operation as either a standalone power supply or in tracking configurations. Power sequencing is also possible by configuring the Enable (EN) and open-drain Power Good (PG) pins.

In power save mode, the devices draw quiescent current of about 17 µA from VIN. Power Save Mode, entered automatically and seamlessly if the load is small, maintains high efficiency over the entire load range. In Shutdown Mode, the device is turned off and current consumption is less than 2 µA.

The device, available in adjustable and fixed output voltage versions, is packaged in a 16-pin VQFN package measuring 3 mm × 3 mm (RGT).

The TPS6214x family is an easy-to-use synchronous step-down DC-DC converter optimized for applications with high power density. A high switching frequency of typically 2.5 MHz allows the use of small inductors and provides fast transient response by use of the DCS-Control topology.

With their wide operating input voltage range of 3 V to 17 V, the devices are ideally suited for systems powered from either a Li-Ion or other batteries, as well as from 12-V intermediate power rails. It supports up to 2 A of continuous output current at output voltages between 0.9 V and 6 V (with 100% duty-cycle mode). The output voltage start-up ramp is controlled by the soft-start pin, which allows operation as either a standalone power supply or in tracking configurations. Power sequencing is also possible by configuring the Enable (EN) and open-drain Power Good (PG) pins.

In power save mode, the devices draw quiescent current of about 17 µA from VIN. Power Save Mode, entered automatically and seamlessly if the load is small, maintains high efficiency over the entire load range. In Shutdown Mode, the device is turned off and current consumption is less than 2 µA.

The device, available in adjustable and fixed output voltage versions, is packaged in a 16-pin VQFN package measuring 3 mm × 3 mm (RGT).
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TPS82140 現行 具整合式電感器的 17V 輸入 2A 同步降壓轉換器 MicroSiP™ 模組 Power module version.

技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS6214x 3-V to 17-V 2-A Step-Down Converter in 3 × 3 QFN Package datasheet (Rev. F) PDF | HTML 2021/10/21
應用說明 Using the TPS6215x in an Inverting Buck-Boost Topology.. (Rev. D) PDF | HTML 2023/1/23
類比設計期刊 Methods of output-voltage adjustment for DC/DC converters 2019/6/14
應用說明 Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018/12/11
類比設計期刊 Understanding 100% mode in low-power DC/DC converters 2018/6/22
類比設計期刊 Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017/10/24
應用說明 Feedforward Capacitor to Improve Stability and Bandwidth of TPS621/821-Family (Rev. A) 2017/6/28
應用說明 Step-Down LED Driver With Dimming With the TPS621-Family and TPS821-Family (Rev. A) 2017/6/28
應用說明 Sequencing and Tracking With the TPS621-Family and TPS821-Family (Rev. A) 2017/6/28
類比設計期刊 Testing tips for applying external power to supply outputs without an input voltage 2016/10/24
類比設計期刊 Understanding frequency variation in the DCS-Control(TM) topology 2015/10/30
應用說明 Basic Calculation of a Buck Converter's Power Stage (Rev. B) PDF | HTML 2015/8/17
應用說明 Optimizing the TPS62130/40/50/60 Output Filter (Rev. A) 2015/7/15
類比設計期刊 Five steps to a great PCB layout for a step-down converter 2015/1/29
應用說明 Step-Down Converter With Input Overvoltage Protection 2014/9/4
應用說明 Step-Down Converter with Cable Voltage Drop Compensation 2014/6/26
應用說明 TPS62130A Differences to TPS62130 2014/4/2
應用說明 Using the TPS62150 in a Split Rail Topology 2014/3/26
類比設計期刊 High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 2013/7/25
應用說明 How to Measure the Control Loop of DCS-Control Devices (Rev. A) 2012/8/9
類比設計期刊 Design considerations for a resistive feedback divider in a DC/DC converter 2012/4/26
應用說明 Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012/1/13
應用說明 Powering the MSP430 from a High Voltage Input using the TPS62122 (Rev. C) 2012/1/12
應用說明 Voltage Margining Using the TPS62130 2011/12/15
應用說明 Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 2011/9/19
類比設計期刊 IQ: What it is, what it isn’t, and how to use it 2011/6/17

設計與開發

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開發板

TPS62140EVM-505 — 採用 3x3 mm、16 針腳 QFN 的 TPS62140 2-A、同步降壓轉換器的評估模組

  • Related Terms:
    • Synchronous Step Down DC-DC Converter
    • DC to DC Step Down Converter
    • Buck DC DC Converter

The TPS62140EVM-505 (HPA505-002) uses the TPS62140 adjustable version and is set to a 3.3-Voutput. The EVM operates with full-rated performance with an input voltage between 3.7 V and 17 V. (...)

使用指南: PDF | HTML
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模擬型號

TPS62140A PSpice Unencrypted Transient Model (Rev. A)

SLVM908A.ZIP (59 KB) - PSpice 模型
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計算工具

SLVC366 — Design Tool for Analog Dimming Using a PWM Signal

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計算工具

SLVC780 — Design Tool for Output Voltage Adjustment Using a DAC

Calculator tool to adjust the power supply's output voltage with an analog input voltage
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN (RGT) 16 Ultra Librarian
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