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TPS62148

ACTIVE

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

A newer version of this product is available

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Similar functionality to the compared device
TPS62902 ACTIVE 3-V to 17-V, 2-A high-efficiency low-IQ buck converter in 1.5-mm × 2-mm QFN package Improved efficiency, smaller size and lower IQ.

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) (mA) 0.018 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 Control mode DCS-Control Duty cycle (max) (%) 100 Type Converter
Vin (min) (V) 3 Vin (max) (V) 17 Vout (min) (V) 0.8 Vout (max) (V) 12 Iout (max) (A) 2 Iq (typ) (mA) 0.018 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 Control mode DCS-Control Duty cycle (max) (%) 100 Type Converter
VQFN-HR (RGX) 11 6 mm² 3 x 2
  • 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 1.25 MHz 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
  • 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 1.25 MHz 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

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 the devices suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 2-A continuous output current. The devices automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, the devices 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.

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 the devices suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 2-A continuous output current. The devices automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, the devices 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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Pin-for-pin with same functionality 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.

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 (Rev. B) PDF | HTML 02 Feb 2023
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 26 Jul 2021
EVM User's guide TPS62148 Buck Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 18 May 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 14 Jun 2019
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications 24 Aug 2018
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
Technical article Output accuracy varies with temperature – 1% is not always 1% PDF | HTML 02 May 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS62148EVM-034 — 17-V Input, 2-A Output, Step-Down Converters with fSEL functionality Evaluation Module

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 (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS62148 PSpice Unencrypted Transient Model (Rev. B)

SLVMCK3B.ZIP (111 KB) - PSpice Model
Calculation tool

SLVC780 Design Tool for Output Voltage Adjustment Using a DAC

Supported products & hardware

Supported products & hardware

Products
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Buck modules (integrated inductor)
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Precision DACs (≤10 MSPS)
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