Datasheet

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1.1 Background
The TPS54340 DC-DC converter is designed to provide up to a 3.5-A output from an input voltage source
of 4.5 V to 42 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 (PCB) areas
that may be achieved when designing with the TPS54340 regulator. The switching frequency is externally
set at a nominal 600 kHz. The high-side MOSFET is incorporated inside the TPS54340 package along
with the gate-drive circuitry. The compensation components are external to the integrated circuit (IC), and
an external resistor divider allows for an adjustable output voltage. Additionally, the TPS54340 provides an
adjustable undervoltage lockout with hysteresis through an external resistor divider. The absolute
maximum input voltage is 42 V for the TPS54340EVM-182.
Table 1. Input Voltage and Output Current Summary
EVM Input Voltage Range Output Current Range
TPS54340EVM-182 V
IN
= 6 V to 42 V I
OUT
= 0 A to 3.5 A
1.2 Performance Specification Summary
A summary of the TPS54340EVM-182 (EVM) 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
specified. This EVM is designed and tested for V
IN
= 6 V to 42 V. The ambient temperature is 25°C for all
measurements, unless otherwise noted.
3
SLVU794A–October 2012–Revised February 2013 Using the TPS54340 Step-Down Converter Evaluation Module
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