Texas Instruments TPS562231EVM, User Manual, Page: 2 / 18

Introduction
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2 SLUUBZ4 – February 2019
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Copyright © 2019, Texas Instruments Incorporated
TPS562231EVM 2-A, Synchronous step-down converter evaluation module
1 Introduction
The TPS562231 is a single, adaptive on-time, D-CAP3™ mode, synchronous buck converter requiring a
very low external component count. The proprietary D-CAP3 mode control supports low ESR output
capacitors such as specialty polymer capacitors and multi-layer ceramic capacitors without complex
external compensation circuits. The fast transient response of D-CAP3 mode control can reduce the
output capacitance required to meet a specific level of performance. The switching frequency is internally
set at a nominal 850 kHz and enters Advanced Eco-mode in light load conditions. The high-side and low-
side switching MOSFETs are incorporated inside the TPS562231 package along with the gate-drive
circuitry. The low drain-to-source on resistance of the MOSFETs allows the TPS562231 to achieve high
efficiencies and helps keep the junction temperature low at high output currents. The TPS562231 dc/dc
synchronous converter is designed to provide up to a 2-A output from an input voltage source of 4.5 V to
17 V. The output voltage range is from 0.6 V to 7 V. Rated input voltage and output current ranges for the
evaluation module are given in
Table 1 .
The TPS562231EVM evaluation module (EVM) is a single, synchronous buck converter providing 3.3 V at
2 A from 4.5-V to 17-V input. This user’s guide describes the TPS562231EVM performance.
Table 1. Input Voltage and Output Current Summary
EVM INPUT VOLTAGE RANGE OUTPUT CURRENT RANGE
TPS562231EVM V
IN
= 4.5 V to 17 V 0 A to 2 A
2 Performance Characteristics Summary
A summary of the TPS562231EVM performance specifications is provided in Table 2 . Specifications are
given for an input voltage of V
IN
= 12 V and an output voltage of 3.3 V, unless otherwise noted. The
ambient temperature is 25°C for all measurement, unless otherwise noted.
Table 2. TPS562231EVM Performance Characteristics Summary
SPECIFICATIONS TEST CONDITIONS MIN TYP MAX UNIT
Input voltage range (V
IN
) 4.5 12 17 V
CH1
Output voltage 3.3 V
Operating frequency V
IN
= 12 V, I
O
= 2 A 850 kHz
Output current range 0 2 A
Over current limit V
IN
= 12 V, L
O
= 3.3 µH 2.8 A
Output ripple voltage V
IN
= 12 V, I
O
= 2 A 15 mV
PP