TPS62147 3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN | TI.com

TPS62147 (ACTIVE)

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

 

Description

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.

Features

  • 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

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Buck converters (integrated switch)

 
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
TPS62147 TPS62130 TPS62135 TPS62136
3     3     3     3    
17     17     17     17    
0.8     0.9     0.8     0.8    
12     6     12     12    
2     3     4     4    
1     1     1     1    
1250     1250     2500     1000    
2500     2500     2500     1000    
0.018     0.017     0.018     0.018    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable    
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Voltage Margining    
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Fixed
VID: other    
Dynamic Voltage Scaling
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Fixed
VID: 2-bit    
DCS-Control     Constant on-time (COT)
DCS-Control    
Constant on-time (COT)
DCS-Control    
Constant on-time (COT)
DCS-Control    
100     100     100     100    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
Catalog     Catalog     Catalog     Catalog    
VQFN-HR | 11     VQFN | 16     VQFN-HR | 11     VQFN-HR | 11    
Converter     Converter     Converter     Converter    

Design tool

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS62147

  Min   Max Range
Vin  V 3.0 to 17.0V
Vout  V 0.8 to 12V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 125°C


Footprint BOM Cost Efficiency


Preview design