background image

All trademarks are the property of their respective owners.

1 Introduction

This user's guide contains background information for the TPS54232 as well as support documentation for 
the TPS54232EVM-415 evaluation module (HPA415). Also included are the performance specifications, the 
schematic, and the bill of materials for the TPS54232EVM-415.

1.1 Background

The TPS54232 dc/dc converter is designed to provide up to a 2 A output from an input voltage source of 3.5 
V to 28 V. Rated input voltage and output current range for the evaluation module are given in 

Table 1-1

This evaluation module is designed to demonstrate the small printed-circuit-board areas that may be achieved 
when designing with the TPS54232 regulator. The switching frequency is internally set at a nominal 1000 kHz. 
The high-side MOSFET is incorporated inside the TPS54232 package along with the gate drive circuitry. The 
low drain-to-source on resistance of the MOSFET allows the TPS54232 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 TPS54232 
provides adjustable slow start and undervoltage lockout inputs. The absolute maximum input voltage is 30 V for 
the TPS54232EVM-415.

Table 1-1. Input Voltage and Output Current Summary

EVM

INPUT VOLTAGE RANGE

OUTPUT CURRENT RANGE

TPS54232EVM-415

VIN = 5 V to 15 V

0 A to 2 A

1.2 Performance Specification Summary

A summary of the TPS54232EVM-415 performance specifications is provided in 

Table 1-2

. Specifications are 

given for an input voltage of V

IN

 = 12 V and an output voltage of 2.5 V, unless otherwise specified. The 

TPS54232EVM-415 is designed and tested for V

IN

 = 5 V to 15 V. The ambient temperature is 25°C for all 

measurements, unless otherwise noted.

Table 1-2. TPS54232EVM-415 Performance Specification Summary

SPECIFICATION

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V

IN

 voltage range

5

12

15

V

Output voltage set point

2.5

V

Output current range

V

IN

 = 5 V to 15 V

0

2

A

Line regulation

I

O

 = 1 A, V

IN

 = 5 V to 15 V

±0.02%

Load regulation

V

IN

 = 12 V, I

O

 = 0.2 A to 2 A

±0.25%

Load transient response

I

O

 = 0.5 A to 1.5 A

Voltage change

–40

mV

Recovery time

400

μs

I

O

 = 1.5 A to 0.5 A

Voltage change

60

mV

Recovery time

400

μs

Loop bandwidth

V

IN

 = 12 V, I

O

 = 1 A

36

kHz

Phase margin

V

IN

 = 12 V , I

O

 = 1 A

54

°

Input ripple voltage

I

O

 = 2 A

160

mVpp

Output ripple voltage

I

O

 = 2 A

10

mVpp

Output rise time

6

ms

Operating frequency

1000

kHz

Maximum efficiency

TPS54232EVM-415, V

IN

 = 5 V, I

O

 = 0.5 A

88.6%

Introduction

www.ti.com

2

TPS54232 Step-Down Converter Evaluation Module User's Guide

SLVU277A – JANUARY 2009 – REVISED OCTOBER 2021

Submit Document Feedback

Copyright © 2021 Texas Instruments Incorporated

Summary of Contents for TPS54232EVM-415

Page 1: ...n 6 Figure 2 5 TPS54232EVM 415 Transient Response 6 Figure 2 6 TPS54232EVM 415 Loop Response 7 Figure 2 7 TPS54232EVM 415 Output Ripple 7 Figure 2 8 TPS54232EVM 415 Input Ripple 8 Figure 2 9 TPS54232E...

Page 2: ...absolute maximum input voltage is 30 V for the TPS54232EVM 415 Table 1 1 Input Voltage and Output Current Summary EVM INPUT VOLTAGE RANGE OUTPUT CURRENT RANGE TPS54232EVM 415 VIN 5 V to 15 V 0 A to 2...

Page 3: ...ection describes how to properly connect set up and use the TPS54232EVM 415 evaluation module The section also includes test results typical for the evaluation module and covers efficiency output volt...

Page 4: ...y of this EVM peaks at a load current of about 0 5 A with VIN 5 V and then decreases as the load current increases towards full load Figure 2 1 shows the efficiency for the TPS54232EVM 415 at an ambie...

Page 5: ...Load Regulation The load regulation for the TPS54232EVM 415 is shown in Figure 2 3 0 1 0 08 0 06 0 04 0 02 0 0 02 0 04 0 06 0 08 0 1 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 I Output Current A O Output...

Page 6: ...M 415 response to load transients is shown in Figure 2 5 The current step is from 25 to 75 of maximum rated load at 15V input Total peak to peak voltage variation is as shown including ripple and nois...

Page 7: ...M Figure 2 6 TPS54232EVM 415 Loop Response 2 7 Output Voltage Ripple The TPS54232EVM 415 output voltage ripple is shown in Figure 2 7 The output current is the rated full load of 2 A and VIN 15 V The...

Page 8: ...ow start voltage In Figure 2 10 the input voltage is initially applied and the output is inhibited by using a jumper at J2 to tie EN to GND When the jumper is removed EN is released When the EN voltag...

Page 9: ...r than 100 mA typical the device enters Eco mode Figure 2 11 shows Eco mode operation channel 1 C1 shows the output voltage while channel 2 C2 shows the switching node PH Figure 2 11 TPS54232EVM 415 E...

Page 10: ...the board including ten vias directly under the TPS54232 device to provide a thermal path from the top side ground plane to the bottom side ground plane The input decoupling capacitor C1 C2 is not use...

Page 11: ...printed circuit board area for the components used in this design is 0 44 in2 This area does not include test point or connectors www ti com Board Layout SLVU277A JANUARY 2009 REVISED OCTOBER 2021 Su...

Page 12: ...ematic Figure 4 1 is the schematic for the TPS54232EVM 415 Figure 4 1 TPS54232EVM 415 Schematic Schematic and Bill of Materials www ti com 12 TPS54232 Step Down Converter Evaluation Module User s Guid...

Page 13: ...ft 1 R1 150 k Resistor Chip 1 16W 1 0603 Std Std 1 R2 48 7 k Resistor Chip 1 16W 1 0603 Std Std 1 R3 17 4 k Resistor Chip 1 16W 1 0603 Std Std 1 R4 0 Resistor Chip 1 16W 1 0603 Std Std 1 R5 10 2 k Res...

Page 14: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Page 15: ...These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not in...

Page 16: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Page 17: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Page 18: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Page 19: ...change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of thes...

Reviews: