SP6122
Evaluation Board Manual
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Easy Evaluation for the
SP6122 Low Voltage PFET
Buck Converter
Ideal for 1A to 5A, Small
Footprint, DC-DC Power
Converters
Very Accurate 1.5%
Reference over Line, Load,
Temperature
Small Micro 8 Package
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DESCRIPTION
The
SP6122 Evaluation Board
is designed to help the user evaluate the performance
of the SP6122 for use as a low voltage input, low voltage output PFET Buck DC-DC
Controller. The SP6122 operates from a 5V or 3.3V input supply, and delivers output
voltages as low as 1.5V with an accuracy of 1.5% over line, load and temperature.
Unlike other 鈥淢icro-8鈥?parts, the SP6122 has an array of value added features for you to
evaluate including: optional hiccup mode, over-current protection and fault flag output.
The evaluation board is a completely assembled and tested surface mount power
supply board which provides easy access to the SP6122 Input and Outputs so that the
user can quickly measure electrical characteristics and waveforms.
The next two sections describe the SP6122 Board Layout and Using the SP6122
Evaluation Boards. A section on SP6122 Power Supply Data is also included with
graphs on Efficiency, Line and Load Regulation. Then, drawings of the PC Layout and
a schematic are included as a design-in tool for the user of the SP6122. Finally, a
SP6122 Evaluation Board List of Materials table is provided with some manufacturers
part numbers to use as a reference.
BOARD LAYOUT
The
SP6122 Evaluation Board
has been designed for quick and easy connection to
the Input and Output of the SP6122 Power Supply under test. Position the board with
the silkscreen lettering upright, (also see the drawing on the front page of this manual)
and you will see U1 the SP6122 8-pin
碌SOIC,
in the center left of the board. To the left
of U1 are the output capacitor Cout and the Vout pin. To the right of U1 are Q1 and the
Vin post and the input capacitor Cin. Below Cin and Cout are the two GND posts.
Rev. 5/23/01
SP6122 Evaluation Board Manual
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漏 Copyright 2001 Sipex Corporation
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