TPS62140 3–17V 2A Step-Down Converter with DCS-Control in 3x3 QFN package | TI.com

TPS62140 (ACTIVE) 3–17V 2A Step-Down Converter with DCS-Control in 3x3 QFN package

 

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Description

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).

Features

  • DCS-ControlTM 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
  • Over Temperature Protection
  • Pin to Pin Compatible with TPS62130 and TPS62150
  • Available in a 3-mm × 3-mm, VQFN-16 Package

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WEBENCH® Designer TPS62140

  Min   Max Range
Vin  V 3.0 to 17.0V
Vout  V 0.9 to 6V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 125°C

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS62140 Order now 3     17     0.9     6.3     2     1     1250     2500     0.017     Enable
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Fixed
Voltage Margining    
Constant on-time (COT)
DCS-Control    
100     -40 to 125     Catalog     VQFN | 16     Converter     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)