TPS544C25 (ACTIVE)

4.5-V to 18-V, 30-A Voltage Mode PMBus™ SWIFT™ Step-Down DC-DC Converter with FSYNC

 

Description

The TPS544x25 devices are PMBus 1.2 Compliant, non-isolated DC-DC converters with integrated FETs, capable of high-frequency operation and 20-A or 30-A current output from a 5 mm × 7 mm package. High-frequency, low-loss switching, provided by an integrated NexFET™ power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current and an optional external temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.

Features

  • PMBus 1.2 Compliant Converters: 20 A and 30 A
  • Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.5 V to 5.5 V
  • 5 mm × 7 mm LQFN Package
  • Single Thermal Pad
  • Integrated 5.5-mΩ and 2.0-mΩ Stacked NexFET™ Power Stage
  • 500-mV to 1500-mV Reference for Adapative Voltage Scaling (AVS) and Margining through PMBus
  • 0.5% Reference Accuracy at 600 mV and Above
  • Lossless Low-Side MOSFET Current Sensing
  • Voltage Mode Control with Input Feed-Forward
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage and Output Current Reporting
  • External Temperature Monitoring with 2N3904 Transistor
  • Programmable via the PMBus interface
    • VOUT_COMMAND and AVS VOUT Transition Rate
    • Overcurrent Protection with Thermal Compensation
    • UVLO, Soft-Start and Soft-Stop
    • PGOOD, OV, UV, OT Levels
    • Fault Responses
    • Turn-On and Turn-Off Delays
  • Thermal Shutdown
  • Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
  • Frequency Synchronization to an External Clock
  • Footprint Compatible 20-A, 30-A Converters

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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
TPS544C25 TPS544B20 TPS544B25 TPS544C20
4.5    4.5    4.5    4.5   
18    18    18    18   
0.5    0.6    0.5    0.6   
5    5.5    5.5    5.5   
30    20    20    30   
1    1    1    1   
200    250    200    250   
1000    1000    1000    1000   
7.7    8    9.5    8   
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Frequency Synchronization
PMBus
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
Tracking
UVLO Adjustable
Voltage Margining   
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
PMBus
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable
Voltage Margining   
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Frequency Synchronization
PMBus
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable
Voltage Margining   
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
PMBus
Power Good
Pre-Bias Start-Up
Remote Sense
Synchronous Rectification
UVLO Adjustable
Voltage Margining   
Voltage Mode    D-CAP
D-CAP2   
Voltage Mode    D-CAP
D-CAP2   
80    80    80    80   
-40 to 125    -40 to 85    -40 to 125    -40 to 85   
Catalog    Catalog    Catalog    Catalog   
LQFN-CLIP    LQFN-CLIP    LQFN-CLIP    LQFN-CLIP   
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WEBENCH® Designer TPS544C25

  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.5 to 5.5V
Iout  A ≤ 30A
Ambient Temp  °C -40 to 125°C


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