Texas Instruments UCD3138PSFBEVM-027 User Manual page 3

1 Introduction
This evaluation model (EVM), the UCD3138PSFBEVM-027, is used to evaluate the UCD3138 64-pin
digital control IC in an off-line power-converter application and then to aid in its design. The EVM is a
standalone phase-shifted full-bridge DC-DC power converter. The EVM is used together with a control
card, the UCD3138CC64EVM-030, which is an EVM placed on the UCD3138RGC.
The UCD3138PSFBEVM-027, together with the UCD3138CC64EVM-030, evaluates a phase-shifted full-
bridge DC-DC converter. Each EVM is delivered without requiring additional work, from either hardware or
firmware. This EVM combination allows for some of the design parameters to be retuned using Texas
Instruments' graphical user interface (GUI) based tool, Fusion Digital Power™ Designer. Loading custom
firmware with user-designed definition and development is also possible.
Three EVMs are included in the kit: the UCD3138PSFBEVM-027, UCD3138CC64EVM-030, and USB-TO-
GPIO.
This user's guide provides basic evaluation instruction with a focus on system operation in a standalone
phase-shifted full-bridge DC-DC power converter.
High voltages are present on this evaluation module during
operation and for a a time period after power off. This module
should only be tested by skilled personnel in a controlled
laboratory environment.
An isolated DC voltage source meeting IEC61010 reinforced
insulation standards is recommended for evaluating this EVM.
High temperature exceeding 60°C may be found during EVM
operation and for a time period after power off.
The purpose of this EVM is to facilitate the evaluation of digital
control in a phase-shifted full-bridge DC-DC converter using the
UCD3138, and cannot be tested and treated as a final product.
Extreme caution should be taken to eliminate the possibility of
electric shock and heat burn. Please refer to the page Evaluation
Module Electrical Safety Guideline after the cover page for your
safety concerns and precautions.
Read and understand this user's guide thoroughly before starting
any physical evaluation.
SLUUAK4 – August 2013
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Using the UCD3138PSFBEVM-027
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Copyright © 2013, Texas Instruments Incorporated
User's Guide
SLUUAK4 – August 2013
Using the UCD3138PSFBEVM-027
3