Texas Instruments TPS62933, User Manual

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ULQ ™ is a trademark of Texas Instruments.
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1 Introduction
The TPS62933 is a high efficiency, easy-to-use synchronous buck converter. With the wide input voltage range
of 3.8-V to 30-V, it is ideally suited for systems powered from 5-V, 12-V, 19-V, 24-V power-bus rails. It supports
up to 3-A continuous output current, 0.8-V to 22-V output voltage and maximum 98% duty cycle operation. The
device employs fixed frequency peak current control mode for fast transient response and good line & load
regulation. The optimized internal loop compensation eliminates the external compensation components over a
wide range of output voltage and operation frequency. The Pulse Frequency Modulation (PFM) mode maximizes
the light load efficiency. The ULQ
™ (Ultra Low Quiescent) feature is extremely beneficial for long battery life
time in low power operation. The switching frequency can be set by the configuration of RT pin in the range of
200-kHz to 2.2-MHz, which allows optimizing system efficiency, filtering size and bandwidth.
The TPS62933EVM evaluation module (EVM) is a single, synchronous buck converter providing 5-V at 3-A
from 5.1-V to 30-V input. This user’s guide describes the TPS62933EVM performance. Rated input voltage and
output current ranges for the evaluation module are given in
Table 1-1 .
Table 1-1. Input Voltage and Output Current Summary
EVM Input Voltage Range Output Current Range
TPS62933EVM V
IN
= 5.1 V to 30 V 0 A to 3 A
2 Performance Specification Summary
A summary of the TPS62933EVM performance specifications is provided in Table 2-1 . Specifications are
given for an input voltage of V
IN
= 24-V and an output voltage of 5-V, unless otherwise noted. The ambient
temperature is 25°C for all measurement, unless otherwise noted.
Table 2-1. Performance Specifications Summary
SPECIFICATIONS TEST CONDITIONS MIN TYP MAX UNIT
Input voltage range 5.1 24 30 V
Output voltage set point 5 V
Operating frequency V
IN
= 24 V, I
O
= 3 A 500 kHz
Output current range 0 3 A
Over current limit V
IN
= 24 V, L
O
= 6.8 µH 5 A
Output ripple voltage V
IN
= 24 V, I
O
= 3 A 20 mV
PP
3 Modifications
These evaluation modules are designed to provide access to the features of the TPS62933. Some modifications
can be made to this module.
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2 TPS62933EVM-129 3-A Regulator Evaluation Module SLUUCH1 – JUNE 2021
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