1
Introduction
1.1
Background
2
Connector Description
2.1
Input/Output Connector Descriptions
2.1.1
J1 – VIN Top Converter
2.1.2
J2 – GND Top Converter
2.1.3
J3 – VOUT Top Converter
2.1.4
J4 – VOUT Top Converter
2.1.5
J5 – VIN Bottom Converter
Introduction
www.ti.com
The TPS54160EVM-230 evaluation module (EVM) helps designers evaluate the operation and
performance of the TPS54160 DC/DC converter. This converter is a wide input voltage (3.5 - 60V),
2.5MHz, non-synchronous, externally compensated, step down converter capable of 1.5A of output
current.
The TPS54160EVM-230 provides two independent DC/DC converters based on the TPS54160. The
converter at the top of the board (top converter) is designed to operate from a nominal 42VDC
±
25% input
voltage source. This input voltage range is typical for input supplies derived from rectified 24VAC sources.
The top converter provides a 5.0V output and up to 1.5A of output current. The top converter highlights a
small solution size by using 0402 components with the minimum number of parts needed to provide a fully
functional DC/DC converter complete with a programmed enable/disable voltage and soft start features.
The converter at the bottom of the board (bottom converter) is designed to operate from 6.0V to 60V, the
maximum recommended input voltage the TPS54160. The bottom converter provides a 3.3V output with
up to 1.5A of output current. The bottom converter has additional component footprints that can be used
by the designer to implement a variety of TPS54160 solutions.
This chapter describes the jumpers and connectors on the EVM as well as how to properly connect, setup,
and use the TPS54160EVM-230.
This is the positive input supply voltage to the top converter. The leads to the input supply should be
twisted and kept as short as possible to minimize EMI transmission. Additional bulk capacitance should be
added between J1 and J2 if the supply leads are greater than six inches. An additional 47
µ
F or greater
capacitor improves the transient response of the TPS54160 and helps to reduce ringing on the input when
long supply wires are used.
This is the return connection for the input power supply of the top converter.
This is the positive connection from the output of the top converter. Connect this pin to the positive input of
the load.
This is the return connection for the output of the top converter.
This is the positive input supply voltage to the bottom converter. The leads to the input supply should be
twisted and kept as short as possible to minimize EMI transmission. Additional bulk capacitance should be
added between J5 and J6 if the supply leads are greater than six inches. An additional 47
µ
F or greater
capacitor improves the transient response of the TPS54160 and helps to reduce ringing on the input when
long supply wires are used.
TPS54160EVM-230
2
SLVU270 – September 2008
