TPS549A20 1.5V to 20V (4.5V to 25V Bias) Input, 15A SWIFT™ Synchronous Step-Down Converter with PMBus™ | TI.com

TPS549A20 (ACTIVE)

1.5V to 20V (4.5V to 25V Bias) Input, 15A SWIFT™ Synchronous Step-Down Converter with PMBus™

 

Description

The TPS549A20 is a small-sized, synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device offers ease-of-use and low bill-of-material count for space-conscious power systems.

This device features high-performance integrated MOSFETs, accurate 0.6-V reference, and an integrated boost switch. Competitive features include very-low external-component count, fast load-transient response, auto-skip mode operation, internal soft-start control, and no requirement for compensation. The device also features fault report via PMBus to simplify the power supply design

A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS549A20 is available in a 28-pin VQFN-CLIP package and is specified from –40°C to 125°C ambient temperature.

For all available packages, see the orderable

Features

  • Integrated SWIFT 9.9-mΩ and 4.3-mΩ MOSFETs Support 15-A Continuous IOUT
  • Wide Conversion Input Voltage Range: 1.5 V to 20 V (with Snubber)
  • Output Voltage Range from 0.6 V to 5.5 V
  • Available PMBus Adjustments
    • Voltage Margin and Adjustment
    • Soft-Start Time
    • Power-On Delay
    • VDD UVLO Level
    • Fault Reporting
    • Switching Frequency
  • Supports All Ceramic Output Capacitors
  • Reference Voltage: 600 mV with ±0.5% Tolerance from –40°C to 85°C ambient temperature
  • D-CAP3 Control Mode With Fast Load-Step Response
  • Hiccup Over Current Protection
  • Auto-Skipping Eco-Mode for High Light-Load Efficiency
  • FCCM for Tight Output Ripple and Voltage Tolerance Requirements
  • Pre-charged Startup Capability
  • Eight Selectable Frequency Settings from
    200 kHz to 1 MHz via PMBus
  • 4.5 mm x 3.5 mm, 28-Pin, VQFN-CLIP Package
  • Supported at the WEBENCH Design Center

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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
Package size: mm2:W x L (PKG)
TPS549A20 TPS53513 TPS53515 TPS53915 TPS548A20
4.5     1.5     1.5     1.5     4.5    
20     18     18     18     20    
0.6     0.6     0.6     0.6     0.6    
5.5     5.5     5.5     5.5     5.5    
15     8     12     12     15    
1     1     1     1     1    
250     250     250     250     250    
1000     1000     1000     1000     1000    
1.35     1.35     1.35     1.35     1.35    
Adjustable Current Limit
Enable
Light Load Efficiency
PMBus
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Voltage Margining
Adaptive/Dynamic Voltage Scaling    
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
PMBus
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining
Adaptive/Dynamic Voltage Scaling    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP3     D-CAP3     D-CAP3     D-CAP3     D-CAP3    
50     80     80     80     50    
-40 to 125     -40 to 85     -40 to 85     -40 to 85     -40 to 125    
Catalog     Catalog     Catalog     Catalog     Catalog    
VQFN-CLIP | 28     VQFN-CLIP | 28     VQFN-CLIP | 28     VQFN-CLIP | 28     VQFN-CLIP | 28    
Converter     Converter     Converter     Converter     Converter    
28VQFN-CLIP: 16 mm2: 3.5 x 4.5 (VQFN-CLIP | 28)     28VQFN-CLIP: 16 mm2: 3.5 x 4.5 (VQFN-CLIP | 28)     28VQFN-CLIP: 16 mm2: 3.5 x 4.5 (VQFN-CLIP | 28)     28VQFN-CLIP: 16 mm2: 3.5 x 4.5 (VQFN-CLIP | 28)     28VQFN-CLIP: 16 mm2: 3.5 x 4.5 (VQFN-CLIP | 28)    

Design tool

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

WEBENCH® Designer TPS549A20

  Min   Max Range
Vin  V 1.5 to 20.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 15A
Ambient Temp  °C -40 to 85°C