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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
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
. 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
2
TPS54232 Step-Down Converter Evaluation Module User's Guide
SLVU277A – JANUARY 2009 – REVISED OCTOBER 2021
Copyright © 2021 Texas Instruments Incorporated
