Datasheet

User's Guide

SLUUA10–October 2012

Using the UCD3138OL64EVM-031

1 Introduction

UCD3138OL64CEVM-031 EVM offers an easy to use test platform for stand-alone evaluation of Texas

Instruments’ UCD3138 highly integrated digital controller that is optimized for isolated power applications.

Featuring a 64-pin socket and comprehensive set of test points, the EVM allows hardware and firmware

engineers to manipulate signals on the different pins of the device individually and study open loop

operation. The EVM also offers the flexibility to realize simple closed loop control configurations (using RC

circuits to filter PWM output signals and regulate a DC voltage in closed loop control). Hardware ports

available to communicate with the device include PMBus, UART and JTAG. The EVM accepts up to 5-V

DC input and an on-board 3.3-V LDO can be used to bias the device. Alternately, using jumpers, the

device can be biased using the PMBus communication pins.

NOTE: In order to download firmware and program the UCD3138 device in UCD3138OL64EVM-

031, a separate EVM from Texas Instruments known as the USB-TO-GPIO Adapter is

required. The USB-TO-GPIO Adapter is NOT supplied with UCD3138OL64EVM-031 and

must be purchased separately. The USB-TO-GPIO Adapter serves as a communication

interface adaptor or a bridge between a host PC and the UCD3138 via a standard type-A to

mini-B USB cable. The USB-TO-GPIO Adapter is listed below in the related products

section.

2 Description

UCD3138OL64EVM-031 is an EVM board, to facilitate evaluation on UCD3138RGC digital power

controller. This EVM provides hardware needed to evaluate UCD3138 64-pin device. All pins of

UCD3138RGC are accessible through header connections, including all GPIO pins, ADC12 pins, front end

pins, DPWM pins, and Fault pins, etc. Particularly, the board has terminal of PMBus, UART DB-9 RS232,

and JTAG. All headers can be jumped to configure for a particular interested evaluation need.

2.1 Typical Applications

• UCD3138RGC Function Evaluation

• Firmware Debug

• Hardware Design Assistance

2.2 Features

• Drop-In Socket to Flexible Change the Device

• External 5.0-V Supply or PMBus Bias Supply

• JTAG Connector

• UART Connector, DB-9, RS232

• LED Indicators

• PMBus Connector to PC Computer Connection Through USB-to-GPIO Adapter

• Rich Test Points to Facilitate the Device Evaluation, System Design and Circuit and Firmware

Debugging

• Board with Jumpers to Make Flexible Configuration to Adapt Various Evaluation Target

Using the UCD3138OL64EVM-031 SLUUA10–October 2012

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