February 2012 R1.0
Page 1 of 8
Enpirion 2012 all rights reserved, E&OE
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EN5339QI 3A Synchronous DCDC Converter
Evaluation
Board User Guide
Introduction
Thank you for choosing Enpirion, the source for ultra small foot print power converter products that
offer true ease of design with no compromise on performance.
You are evaluating Enpirion’s EN5339QI low profile 3A PowerSoC. The device is a fully integrated
step down DCDC converter with control/compensation, gate drive, MOSFET switches and Enpirion’s
proprietary high performance magnetics. It comes in a 4mm x 6mm x 1.1mm low profile package and
requires only a small number of external components to make a complete converter solution.
.
This user guide should be used together with the latest device datasheet. The datasheet can be
found at
www.enpirion.com
.
Following are the features of this evaluation board.
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Populated with one EN5339QI 3A PowerSoC with integrated inductor.
•
Pre-tinned pads are available for a wide range of input and output capacitor configurations.
•
There are four positions available for the output capacitors. The first position, closest to the IC,
can accommodate a 1206 or 0805 case size while the other three positions can accommodate
either 0805 or 0603 capacitor case sizes.
•
The base output capacitor configuration is 3 x 22uF 0805 MLCC. Refer to the product
datasheet for output capacitor requirements.
•
There are two positions for the input capacitors which can accommodate either 0805 or 0603
case sizes. The base input capacitor configuration is a single 22uF 0805 MLCC. Refer to the
product datasheet for input capacitor requirements.
•
Output voltage programming is accomplished via a simple resistor divider. Jumpers are
provided for 4 pre-configured output settings. These settings are as follows:
•
1.0V, 1.2V, 1.5V, 1.8V
•
Easy jumpers are provided for the following signals:
•
Enable
•
Numerous test points are provided as well as clip leads for input and output connections
•
The board comes with input decoupling and reverse polarity protection.
