3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN


Product details


Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 0.8 Vout (Max) (V) 12 Iout (Max) (A) 2 Iq (Typ) (uA) 18 Switching frequency (Min) (kHz) 1250 Switching frequency (Max) (kHz) 2500 Features Enable, Forced PWM, Light Load Efficiency, Output Discharge, Over Current Protection, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, UVLO Adjustable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-HR (RGX) 11 6 mm² 3 x 2 open-in-new Find other Buck converters (integrated switch)


  • Output Voltage Accuracy ± 1% over specified TJ range (PWM mode)
  • Input Voltage Range: 3 V to 17 V
  • Quiescent Current 18 µA Typical
  • Output Voltage from 0.8 V to 12 V
  • Adjustable Soft-Start
  • Forced PWM or PWM/PFM operation
  • Switching frequency of 1.25MHz or 2.5 MHz in forced PWM
  • Precise ENABLE input allows
    • User-Defined Undervoltage Lockout
    • Exact Sequencing
  • 100% Duty Cycle Mode
  • Automatic Efficiency Enhancement AEE™
  • DCS-Control™ Topology
  • Active Output Discharge (TPS62148)
  • HICCUP Overcurrent Protection (TPS62147)
  • Power Good Output
  • Available in 2-mm × 3-mm VQFN Package

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The TPS62147 and TPS62148 are high efficiency and easy-to-use synchronous step-down DC/DC converters, based on the DCS-Control™ Topology. The wide input voltage range of 3-V to 17-V make them suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 2-A continuous output current. They automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, they are well suited for applications that require connected standby performance, like industrial PC and video surveillance. With the MODE pin set to low, the switching frequency is adapted automatically based on the output current and also on input and output voltage. This technique is called Automatic Efficiency Enhancement (AEE™) and maintains high conversion efficiency over the whole operation range. TPS62147, TPS62148 provide a 1% output voltage accuracy in PWM mode and therefore enable the design of a power supply with high output voltage accuracy. The FSEL pin allows to set a switching frequency in forced PWM mode of 1.25 MHz or 2.5 MHz, respectively.

The typical quiescent current is 18 µA. In shutdown mode the current is typically 1 µA.

The devices are available as an adjustable version, packaged in a 3-mm × 2-mm VQFN package.

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Same functionality and pinout but is not an equivalent to the compared device:
TPS62135 ACTIVE 3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN This product is a pin-to-pin 2 A and 2.5-MHz switching frequency.
TPS62136 ACTIVE 3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN This product is a pin-to-pin 2-A product and 1-MHz switching frequency.
TPS62147 ACTIVE 3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN This is the same product with hiccup current limit.
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
NEW TPS62902 ACTIVE 3-V to 17-V, 2-A, high-efficiency and low IQ buck converter 1.5-mm × 2-mm QFN package Improved efficiency, smaller size and lower Iq
Similar but not functionally equivalent to the compared device:
TPS82140 ACTIVE 17V Input 2A Synchronous Step-Down Converter MicroSiP™ Module With Integrated Inductor Power module version.

Technical documentation

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Type Title Date
* Data sheet TPS62147, TPS62148 High Accuracy 3-V to 17-V 2-A Step-Down Converter With DCS-Control datasheet Sep. 21, 2016
User guide TPS62148 Buck Converter Evaluation Module User's Guide (Rev. A) May 18, 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) Apr. 08, 2021
Application note Methods of output-voltage adjustment for DC/DC converters Jun. 14, 2019
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems Sep. 10, 2018
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications Aug. 24, 2018
Application note Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Technical article Output accuracy varies with temperature – 1% is not always 1% May 02, 2018

Design & development

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Hardware development

document-generic User guide

The TPS62148EVM-034 is designed to help the user easily evaluate and test the operation and functionality of the TPS62148 DC/DC converter. The EVM converts a 3-V to 17-V input voltage to a regulated output voltage of 3.3V at up to 2A output current. The TPS62148 operates with a nominal switching (...)

  • Input Voltage Range: 3V to 17V
  • Output Current of 2A
  • Output Voltage Accuracy of ±1% (PWM Mode)
  • Automatic Efficiency Enhancement AEE™
  • Adjustable Soft Start

Design tools & simulation

SLVMCK3B.ZIP (111 KB) - PSpice Model
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 (...)
  • 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
  • (...)
SLVC780.ZIP (138 KB)

CAD/CAE symbols

Package Pins Download
VQFN-HR (RGX) 11 View options

Ordering & quality

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