TPS544C25 4.5-V to 18-V, 30-A Voltage Mode PMBus™ SWIFT™ Step-Down DC-DC Converter with FSYNC | TI.com

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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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

Parametrics

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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)
TPS544C25 Order now 4.5     18     0.5     5     30     1     200     1000     7.7     Adjustable Current Limit
Enable
Frequency Synchronization
PMBus
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable
Voltage Margining
Adaptive/Dynamic Voltage Scaling
Differential Remote Sense    
Voltage Mode     80     -40 to 125     Catalog     LQFN-CLIP | 40     Converter     40LQFN-CLIP: 35 mm2: 5 x 7 (LQFN-CLIP | 40)    
TPS53353 Order now 1.5     15     0.6     5.5     20     1     250     1000     0.32     Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP     90     -40 to 85     Catalog     LSON-CLIP | 22     Converter     22LSON-CLIP: 30 mm2: 5 x 6 (LSON-CLIP | 22)    
TPS53355 Order now 1.5     15     0.6     5.5     30     1     250     1000     0.32     Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP     90     -40 to 85     Catalog     LSON-CLIP | 22     Converter     22LSON-CLIP: 30 mm2: 5 x 6 (LSON-CLIP | 22)    
TPS543B20 Order now 4     19     0.6     5.5     25     1     300     2000     3     Enable
Frequency Synchronization
Over Current Protection
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Adaptive/Dynamic Voltage Scaling
Differential Remote Sense    
Current Mode     70     -40 to 125     Catalog     LQFN-CLIP | 40     Converter     40LQFN-CLIP: 35 mm2: 5 x 7 (LQFN-CLIP | 40)    
TPS543C20 Order now 4     14     0.6     5.5     40     1     300     2000     4.3     Adjustable Current Limit
Enable
Frequency Synchronization
Over Current Protection
Phase Interleaving