Texas Instruments UCD3138 - User Manual

Using the UCD3138PFCEVM-026
User's Guide
Literature Number: SLUU885B
March 2012–Revised July 2012

Texas Instruments UCD3138 Specifications

General

Device Type	Digital Power Controller
Flash Memory	128 KB
RAM	8 KB
ADC Resolution	12-bit
Number of ADCs	2
Operating Temperature	-40°C to 125°C
Architecture	ARM Cortex-M3
Operating Voltage	3 V to 3.6 V
Package	64-Pin HTQFP
Communication Interfaces	I2C, SPI, UART
Digital Power Peripherals	Analog Comparators

Summary

Introduction

Description

Electrical Performance Specifications

Test Setup

Test Procedure

Efficiency Measurement Procedure

Step-by-step guide for measuring power conversion efficiency.

Performance Data and Typical Characteristic Curves

Efficiency Curves

Presents efficiency data at different load currents and input voltages.

Power Factor Curves

Input Current Characteristics (115 VAC)

Input Current Characteristics (230 VAC)

Output Voltage Ripple

Digital PFC Description

PFC Block Diagrams

UCD3138 Pin Definitions

EVM Hardware Components

Digital PFC Firmware Overview

System Protection Mechanisms

Details on cycle-by-cycle current protection and over-voltage protection.

Control Loop Operation and Compensation

Average current mode control, PID compensation, and voltage feedback loop.

Evaluating the Single-Phase PFC with GUI

Designer GUI Overview

Explains the main tabs and features of the Designer GUI.

Monitoring, Re-configuring and Re-tuning with Designer GUI

Power On and Test Procedure with GUI

GUI Operations: Monitoring and Configuration

Using GUI for monitoring variables and configuring/re-configuring the EVM.

GUI Operations: Control Loop Tuning

Tuning current and voltage feedback loops using the GUI.