Texas Instruments TPS54226 SWIFT Regulator Evaluation Module TPS54226EVM-539 TPS54226EVM-539 Datenbogen
Produktcode
TPS54226EVM-539
Introduction
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1
Input Voltage and Output Current Summary
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2
TPS54226 EVM and 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
This user’s guide contains background information for the TPS54226 as well as support documentation for
the TPS54226EVM-539 evaluation module. Also included are the performance specifications, schematic
and the bill of materials for the TPS54226EVM-539.
the TPS54226EVM-539 evaluation module. Also included are the performance specifications, schematic
and the bill of materials for the TPS54226EVM-539.
1.1
Background
The TPS54226 is a single, adaptive on-time D-CAP2™ mode synchronous buck converter requiring a very
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 700 kHz. The high-side and low-side
switching MOSFETs are incorporated inside the TPS54226 package along with the gate drive circuitry.
The low drain-to-source on resistance of the MOSFETs allow the TPS54226 to achieve high efficiencies
and helps keep the junction temperature low at high output currents. The TPS54226 also has an
Auto-Skip mode to enable higher efficiency at light loads. The TPS54226 dc/dc synchronous converter is
designed to provide up to a 2-A output from an input control voltage source of 4.5V to 18V and an input
power voltage source of 2V to 18V. The output voltage range is from 0.76V to 5.5V.voltage and output
current range for the evaluation module are given in
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 700 kHz. The high-side and low-side
switching MOSFETs are incorporated inside the TPS54226 package along with the gate drive circuitry.
The low drain-to-source on resistance of the MOSFETs allow the TPS54226 to achieve high efficiencies
and helps keep the junction temperature low at high output currents. The TPS54226 also has an
Auto-Skip mode to enable higher efficiency at light loads. The TPS54226 dc/dc synchronous converter is
designed to provide up to a 2-A output from an input control voltage source of 4.5V to 18V and an input
power voltage source of 2V to 18V. The output voltage range is from 0.76V to 5.5V.voltage and output
current range for the evaluation module are given in
.
Table 1. Input Voltage and Output Current Summary
EVM
Input Voltage Range
Output Voltage and Current Range
TPS54226EVM-539
VIN = 4.5V to 18V
VOUT = 1.05 V, 0A to 2A
1.2
Performance Specification Summary
A summary of the TPS54226EVM-539 performance specifications is provided in
. Specifications
are given for an input voltage of VIN = 12V and an output voltage of 1.05V, unless otherwise noted. The
ambient temperature is 25°C for all measurement, unless otherwise noted.
ambient temperature is 25°C for all measurement, unless otherwise noted.
Table 2. TPS54226 EVM and Performance Specifications Summary
Specifications
Test Conditions
Min
Typ
Max
Unit
Input voltage range (VIN)
4.5
12
18
V
Output voltage
1.05
V
Operating frequency
VIN = 12V, I
O
= 1A
700
kHz
CH1
Output current range
0
2
A
Over current limit
VIN = 12V
3.1
A
Output ripple voltage
VIN = 12V, I
O
= 2A
7
mV
PP
2
SLVU336 – November 2009
TPS54226EVM-539 2-A, SWIFT
TM
Regulator Evaluation Module
Copyright © 2009, Texas Instruments Incorporated