Texas Instruments Evaluation Module for TPS54427 TPS54427EVM-052 TPS54427EVM-052 Datenbogen
Produktcode
TPS54427EVM-052
Introduction
15
Internal Layer 2
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16
Bottom Layer
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17
TPS54427 Schematic Diagram
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List of Tables
1
Input Voltage and Output Current Summary
............................................................................
2
TPS54427 Performance Specifications Summary
......................................................................
3
Output Voltages
.............................................................................................................
4
Connection and Test Points
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5
Bill of Materials
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1
Introduction
The TPS54427 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 TPS54427 package along with the gate drive circuitry.
The low drain-to-source on resistance of the MOSFETs allows the TPS54427 to achieve high efficiencies
and helps keep the junction temperature low at high-output currents. The TPS54427 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 7 V. Rated input voltage and output current range for the evaluation
module are given in
compensation. The switching frequency is internally set at a nominal 650 kHz. The high-side and low-side
switching MOSFETs are incorporated inside the TPS54427 package along with the gate drive circuitry.
The low drain-to-source on resistance of the MOSFETs allows the TPS54427 to achieve high efficiencies
and helps keep the junction temperature low at high-output currents. The TPS54427 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 7 V. Rated input voltage and output current range for the evaluation
module are given in
The TPS54427 is a single, synchronous buck converter providing 1.05 V at 4 A from 4.5 V to 18 V input.
This user
This user
’
s guide describes the TPS54427 performance on the EVM.
Table 1. Input Voltage and Output Current Summary
EVM
Input Voltage Range
Output Current Range
TPS54427
V
IN
= 4.5 V to 18 V
0 A to 4 A
2
Performance Specification Summary
A summary of the TPS54427 performance specifications is provided in
. Specifications are given
for an input voltage of V
IN
= 12 V and an output voltage of 1.05 V, unless otherwise noted. The ambient
temperature is 25
°
C for all measurements, unless otherwise noted.
Table 2. TPS54427 Performance Specifications Summary
Specifications
Test Conditions
Min
Typ
Max
Unit
Input voltage range, V
IN
4.5
12
18
V
Output voltage, V
OUT
1.05
V
Operating frequency
V
IN
= 12 V, I
O
= 4 A
650
kHz
Output current range
0
4
A
Line regulation
I
O
= 2.5 A
+/- 0.33
%
Load regulation
V
IN
= 12 V
+/- 0.15
%
Overcurrent limit
V
IN
= 12 V, L
O
= 1.5
µ
H
4.6
5.3
6.8
A
Output ripple voltage
V
IN
= 12 V, I
O
= 4 A
15
mV
PP
Maximum efficiency
V
IN
= 5 V, I
O
= 0.7 A
88
%
2
TPS54427, 4-A, SWIFT
™
Regulator
—
Evaluation Module
SLVU579
–
December 2011
Copyright
©
2011, Texas Instruments Incorporated