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reference designTPS544C25

Texas Instruments TPS544C25

TPS544x25 4.5-V to 18-V, 20-A and 30-A SWIFT™ Synchronous Buck Converters with PMBus™ and Frequency Synchronization

Overview

TopologyBuck Converter
Input voltage4.5-18 V
Switching frequency200-1000 kHz
Output 10.95 V / 30 A

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

Typical applications

  • Enterprise Storage SSD
  • Ethernet Switches, Optical Switches, Routers, Base Stations
  • Servers
  • High-Density Power Solutions
  • Test and Instrumentation

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
VR(V (DC))
Size
Operating Temperature
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
L(nH)
LR(nH)
IR(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Pins
Version
Type
Mount
SamplesAvailability & Sample
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885012109014
SPECWCAP-CSGP MLCCs 25 V(DC), 22 µF, ±20%
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
Capacitance22 µF
Capacitance±20% 
Rated Voltage25 V (DC)
Size1210 
Operating Temperature -55 °C up to +85 °C
Dissipation Factor10 %
Insulation Resistance0.005 GΩ
Ceramic TypeX5R Class II 
Length3.2 mm
Width2.5 mm
Height2.5 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
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885012109004
SPECWCAP-CSGP MLCCs 6.3 V(DC), 100 µF, ±20%
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 6.3 V(DC)
Capacitance100 µF
Capacitance±20% 
Rated Voltage6.3 V (DC)
Size1210 
Operating Temperature -55 °C up to +85 °C
Dissipation Factor10 %
Insulation Resistance0.001 GΩ
Ceramic TypeX5R Class II 
Length3.2 mm
Width2.5 mm
Height2.5 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
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744301047
SPECWE-HCM SMT High Current Flat Wire Inductor, –, –

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCM SMT High Current Flat Wire Inductor
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Size1190 
Operating Temperature -40 °C up to +125 °C
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Length11.3 mm
Width11 mm
Height8.9 mm
Pad Dimension2.2 mm
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Inductance470 nH
Rated Inductance240 nH
Rated Current38 A
Saturation Current @ 10%32.1 A
Saturation Current @ 30%36.1 A
DC Resistance0.32 mΩ
Self Resonant Frequency20 MHz
MaterialMnZn 
Pins2 
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MountSMT 
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61201021621
SPECWR-BHD 2.54 mm Male, –, –

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation–
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-BHD 2.54 mm Male
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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Length20.36 mm
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PackagingTray 
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Rated Current3 A
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Pins10 
VersionLow Profile 
TypeStraight 
MountTHT 
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