TPS549B22 1.5V to 18V Input, 25A SWIFT™ Synchronous Step-Down Converter with Diff. Remote Sense and PMBus™ | TI.com

TPS549B22 (ACTIVE)

1.5V to 18V Input, 25A SWIFT™ Synchronous Step-Down Converter with Diff. Remote Sense and PMBus™

1.5V to 18V Input, 25A SWIFT™ Synchronous Step-Down Converter with Diff. Remote Sense and PMBus™  - TPS549B22
 

Description

The TPS549B22 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count and space-conscious power systems.

This device features full differential sense and TI integrated FETs with a high-side on-resistance of 4.1 mΩ and a low-side on-resistance of 1.9 mΩ. The device also features an accurate 0.5%, 0.9-V reference with an ambient temperature range between –40°C and +125°C. Competitive features include: very low external component count, accurate load regulation and line regulation, auto-skip or FCCM mode operation, and internal soft-start control.

The TPS549B22 device is available in 7 mm × 5 mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).

Features

  • Input Voltage (PVIN): 1.5 V to 18 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 4.1-mΩ and 1.9-mΩ Power MOSFETs With 25-A Continuous Output Current
  • Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
  • ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop
  • Adaptive On-Time Control with 8 PMBusTM Frequencies: 315 kHz, 425 kHz, 550 kHz, 650 kHz, 825 kHz, 900 kHz, 1.025 MHz, 1.125 MHz
  • Temperature Compensated and Programmable Current Limit with RILIM and OC Clamp
  • Choice of Hiccup or Latch-Off OVP or UVP
  • VDD UVLO External Adjustment by Precision EN
  • Prebias Start-up Support
  • Eco-mode™ and FCCM Selectable
  • Full Suite of Fault Protection and PGOOD
  • Standard VOUT_COMMAND and VOUT_MARGIN (HIGH and LOW)
  • Pin-Strapping and On-the-Fly Programming
  • Fault Reporting and Warning
  • NVM Backup for Selected Commands
  • 1-MHz PMBus with PEC and SMB_ALRT#
  • Create a Custom Design Using the TPS549B22 With the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Buck Converter (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
TPS549B22 TPS53355 TPS548B22 TPS549D22 TPS56121
1.5     1.5     1.5     1.5     4.5    
18     15     18     16     14    
0.6     0.6     0.6     0.6     0.6    
5.5     5.5     5.5     5.5     12    
25     30     25     40     15    
1     1     1     1     1    
315     250     425     315     300    
1125     1000     1050     1125     1000    
2     0.32     2     2     2.5    
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Light Load Efficiency
Output Discharge
Over Current Protection
PMBus
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable
Voltage Margining    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable    
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Light Load Efficiency
PMBus
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
Tracking
UVLO Adjustable
Voltage Margining    
Adjustable Current Limit
Enable
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP3     D-CAP     D-CAP3     D-CAP3     Voltage Mode    
80     90     80     80     93    
-40 to 125     -40 to 85     -40 to 125     -40 to 85     -40 to 125    
Catalog     Catalog     Catalog     Catalog     Catalog    
LQFN-CLIP     LSON-CLIP     LQFN-CLIP     LQFN-CLIP     LSON-CLIP    
New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS549B22

  Min   Max Range
Vin  V 1.5 to 18.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 25A
Ambient Temp  °C -40 to 85°C


Footprint BOM Cost Efficiency


Preview design