Texas Instruments TPS54335AEVM-010, User Manual

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Introduction
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2 SLVUB76 – July 2017
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Copyright © 2017, Texas Instruments Incorporated
TPS54335AEVM-010 3-A Regulator Evaluation Module
1 Introduction
This user's guide contains background information for the TPS54335A as well as support documentation
for the TPS54335AEVM-010 evaluation module (BSR010-001). Also included are the performance
specifications, the schematic, and the bill of materials for the TPS54335AEVM-010.
1.1 Background
The TPS54335A dc/dc converter is designed to provide up to a 3-A output from an input voltage source of
4.5 V to 28 V. Rated input voltage and output current range for the evaluation module are given in
Table 1 . This evaluation module is designed to demonstrate the small printed-circuit-board areas that may
be achieved when designing with the TPS54335A regulator. The switching frequency is externally set at a
nominal 340 kHz. The high-side and low-side MOSFETs are incorporated inside the TPS54335A package
along with the gate-drive circuitry. The low drain-to-source on resistance of the MOSFETs allow the
TPS54335A to achieve high efficiencies and helps keep the junction temperature low at high output
currents. The compensation components are external to the integrated circuit (IC), and an external divider
allows for an adjustable output voltage. Additionally, the TPS54335A provides an adjustable undervoltage
lockout input. The absolute maximum input voltage is 30 V for the TPS54335AEVM-010.
Table 1. Input Voltage and Output Current Summary
EVM INPUT VOLTAGE RANGE OUTPUT CURRENT RANGE
TPS54335AEVM-010 VIN = 8 V to 28 V 0 A to 3 A
1.2 Performance Specification Summary
A summary of the TPS54335AEVM-010 performance specifications is provided in Table 2 . Specifications
are given for an input voltage of V
IN
= 24 V and an output voltage of 5.0 V, unless otherwise specified. The
TPS54335AEVM-010 is designed and tested for V
IN
= 8 V to 28 V. The ambient temperature is 25°C for all
measurements, unless otherwise noted.
Table 2. TPS54335AEVM-010 Performance Specification Summary
SPECIFICATION TEST CONDITIONS MIN TYP MAX UNIT
V
IN
operating voltage range 8 24 28 V
V
IN
start voltage 7.12 V
V
IN
stop voltage 6.12 V
Output voltage set point 5 V
Output current range V
IN
= 8 V to 28 V 0 3 A
Line regulation I
O
= 1.5 A, V
IN
= 8 V to 28 V ±0.05%
Load regulation V
IN
= 24 V, I
O
= 0 A to 3 A ±0.15%
Load transient response
I
O
= 0.75 A to 2.25 A
Voltage change –190 mV
Recovery time 150 μ s
I
O
= 2.25 A to 0.75 A
Voltage change 190 mV
Recovery time 150
μ
s
Loop bandwidth V
IN
= 24 V, I
O
= 1.5 A 31.6 kHz
Phase margin V
IN
= 24 V , I
O
= 1.5 A 61 °
Input ripple voltage I
O
= 3 A 400 mV
PP
Output ripple voltage I
O
= 3 A <30 mV
PP
Output rise time 2 ms
Operating frequency 340 kHz
Maximum efficiency TPS54335AEVM-010, V
IN
= 8 V, I
O
= 0.7 A 96.5%