Texas Instruments Evaluation Module for TPS54428 TPS54428EVM-052 TPS54428EVM-052 Datenbogen
Produktcode
TPS54428EVM-052
Introduction
15
TPS54428EVM-052 Shut-down Relative to EN
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16
Top Assembly
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17
Top Layer
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Internal Layer 1
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Internal Layer 2
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Bottom Layer
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TPS54428EVM-052 Schematic Diagram
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List of Tables
1
Input Voltage and Output Current Summary
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2
TPS54428EVM-052 Performance Specifications Summary
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3
Output Voltages
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4
Connection and Test Points
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5
Bill of Materials
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1
Introduction
The TPS54428 is a single, adaptive on-time, D-CAP2
™
-mode, synchronous buck converter requiring a
low, external component count. The D-CAP2
™
control circuit is optimized for low-ESR output capacitors
such as POSCAP, SP-CAP, or ceramic types and features fast transient response with no external
compensation. The switching frequency is internally set at a nominal 650 kHz. The high-side and low-side
switching MOSFETs are incorporated inside the TPS54428 package along with the gate drive circuitry.
The low drain-to-source on resistance of the MOSFETs allows the TPS54428 to achieve high efficiencies
and helps keep the junction temperature low at high-output currents. The TPS54428 also features
auto-skip Eco-mode
compensation. The switching frequency is internally set at a nominal 650 kHz. The high-side and low-side
switching MOSFETs are incorporated inside the TPS54428 package along with the gate drive circuitry.
The low drain-to-source on resistance of the MOSFETs allows the TPS54428 to achieve high efficiencies
and helps keep the junction temperature low at high-output currents. The TPS54428 also features
auto-skip Eco-mode
™
operation for improved light-load efficiency. The TPS54428 dc/dc synchronous
converter is designed to provide up to a 4 A output from an input voltage source of 4.5 V to 18 V. The
output voltage range is from 0.76 V to 6 V. Rated input voltage and output current range for the evaluation
module are given in
output voltage range is from 0.76 V to 6 V. Rated input voltage and output current range for the evaluation
module are given in
The TPS54428EVM-052 evaluation module is a single, synchronous buck converter providing 1.05 V at 4
A from 4.5-V to 18-V input. This user
A from 4.5-V to 18-V input. This user
’
s guide describes the TPS54428EVM-052 performance.
Table 1. Input Voltage and Output Current Summary
EVM
Input Voltage Range
Output Current Range
TPS54428EVM-052
V
IN
= 4.5 V to 18 V
0 A to 4A
2
TPS54428, 4-A, SWIFT
™
Regulator Evaluation Module
SLVU578
–
December 2011
Copyright
©
2011, Texas Instruments Incorporated