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

TPS549A20
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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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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

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
Part number Order 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 Order now 4.5     20     0.6     5.5     15     1     250     1000     1.35     Enable
Light Load Efficiency
PMBus
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining
Adaptive/Dynamic Voltage Scaling
Soft Start Adjustable
I2C
Over Current Protection
UVLO Adjustable
Adjustable Current Limit    
D-CAP3     50     -40 to 125     Catalog     VQFN-CLIP | 28     Converter     28VQFN-CLIP: 16 mm2: 3.5 x 4.5 (VQFN-CLIP | 28)    
TPS53513 Order now 1.5     18     0.6     5.5     8     1     250     1000     1.35     Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP3     80     -40 to 85     Catalog     VQFN-CLIP | 28     Converter     28VQFN-CLIP: 16 mm2: 3.5 x 4.5 (VQFN-CLIP | 28)    
TPS53515 Order now 1.5     18     0.6     5.5     12     1     250     1000     1.35     Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Soft Start Adjustable
Over Current Protection
UVLO Fixed
Adjustable Current Limit    
D-CAP3     80     -40 to 85     Catalog     VQFN-CLIP | 28     Converter     28VQFN-CLIP: 16 mm2: 3.5 x 4.5 (VQFN-CLIP | 28)    
TPS53915 Order now 1.5     18     0.6     5.5     12     1     250     1000     1.35     Enable
Light Load Efficiency
PMBus
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining
Adaptive/Dynamic Voltage Scaling
Soft Start Adjustable
I2C
Over Current Protection
UVLO Adjustable
Adjustable Current Limit    
D-CAP3     80     -40 to 85     Catalog     VQFN-CLIP | 28     Converter     28VQFN-CLIP: 16 mm2: 3.5 x 4.5 (VQFN-CLIP | 28)    
TPS548A20 Order now 4.5     20     0.6     5.5     15     1     250     1000     1.35     Adjustable Current Limit
Enable
Frequency Synchronization
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Soft Start Adjustable    
D-CAP3     50     -40 to 125     Catalog