Introduction

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1

Introduction

This user's guide contains background information for the TPS54519 as well as support documentation for

the TPS54519EVM-037 evaluation module (also called PWR037). Also included are the performance

specifications, the schematic, and the bill of materials for the TPS54519EVM-037.

1.1

Background

The TPS54519 dc/dc converter is designed to provide up to a 5-A output from an input voltage source of

2.95 V to 6 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 can

be achieved when designing with the TPS54519 regulator. The switching frequency is externally set at a

nominal 1000 kHz. The high-side and low-side MOSFETs are incorporated inside the TPS54519 package

along with the gate drive circuitry. The low, drain-to-source on-resistance of the MOSFETs allows the

TPS54519 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 TPS54519 provides adjustable slow start and

undervoltage lockout inputs. The absolute maximum input voltage is 7 V for the TPS54519EVM-037.

Table 1. Input Voltage and Output Current Summary

EVM

INPUT VOLTAGE RANGE

OUTPUT CURRENT RANGE

TPS54519EVM-037

VIN = 3 V to 6 V

0 A to 5 A

1.2

Performance Specification Summary

A summary of the TPS54519EVM-037 performance specifications is provided in Table 2. Specifications

are given for an input voltage of V

TPS54519EVM-037 is designed and tested for V

measurements, unless otherwise noted.

Table 2. TPS54519EVM-037 Performance Specification Summary

SPECIFICATION

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V

3

5

6

V

V

2.794

V

V

2.595

V

Output voltage set point

1.8

V

Output current range

V

0

5

A

Line regulation

I

±0.1%

Load regulation

V

±0.6%

Voltage change

–72

mV

I

slew rate = 0.5 A/

µs

Recovery time

100

μs

Load transient response

Voltage change

72

mV

I

slew rate = 0.5 A/

µs

Recovery time

100

μs

Loop bandwidth

V

73

kHz

Phase margin

V

54

°

Input ripple voltage

I

150

mV

PP

Output ripple voltage

I

<10

mV

PP

Output rise time

2.5

ms

Operating frequency

1000

kHz

Maximum efficiency

TPS54519EVM-037, V

94.6%

2

TPS54519EVM-037, 5-A, SWIFT

™ Regulator— Evaluation Module

SLVU523

– September 2011

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