UCD3138RHAR datasheet(6/68 Pages) TI1

6 / 68 page

UCD3138

SLUSAP2 A – MARCH 2012 – REVISED MARCH 2012

www.ti.com

Highly Integrated Digital Controller for Isolated Power

Check for Samples: UCD3138

Introduction

1.1

Features

• Digital Control of up to 3 Independent

• Soft Start / Stop with and without Pre-bias

Feedback Loops

• Fast Input Voltage Feed Forward Hardware

– Dedicated PID based hardware

• Primary Side Voltage Sensing

– 2-pole/2-zero configurable

• Copper Trace Current Sensing

– Non-Linear Control

• Flux and Phase Current Balancing for Non-

• Up to 16MHz Error Analog to Digital Converter

Peak Current Mode Control Applications

(EADC)

• Current Share Bus Support

– Configurable Resolution as Small as

– Analog Average

1mV/LSB

– Master/Slave

– Automatic Resolution Selection

• Feature Rich Fault Protection Options

– Up to 8x Oversampling

– 7 High Speed Analog Comparators

– Hardware Based Averaging (up to 8x)

– Cycle-by-Cycle Current Limiting

– 14 bit Effective DAC

– Programmable Fault Counting

• Up to 8 High Resolution Digital Pulse Width

– External Fault Inputs

Modulated (DPWM) Outputs

– 4–10 Digital Comparators

– 250ps Pulse Width Resolution

– Programmable blanking time

– 4ns Frequency Resolution

• Synchronization of DPWM waveforms between

– 4ns Phase Resolution

multiple UCD313x devices

– Adjustable Phase Shift Between Outputs

• 14 channel, 12 bit, 265 ksps General Purpose

– Adjustable Dead-band Between Pairs

ADC with integrated

– Up to 2MHz Switching Frequency

– Programmable averaging filters

• Configurable PWM Edge Movement

– Dual sample and hold

– Trailing Modulation

• Internal Temperature Sensor

– Leading Modulation

• Fully Programmable High-Performance

– Dual Edge Modulation

31.25MHz, 32-bit ARM7TDMI-S Processor

• Configurable Feedback Control

– 32 kByte (kB) Program Flash

– Voltage Mode

– 2 kB Data Flash with ECC

– Average Current Mode

– 4 kB Data RAM

– Peak Current Mode Control

– 4 kB Boot ROM Enables Firmware Boot-Load

in the Field via I2C or UART

– Constant Current

• Communication Peripherals

– Constant Power

– I2C/PMBus

• Configurable Modulation Methods

– 2 UARTs

– Frequency Modulation

• JTAG Debug Port

– Phase Shift Modulation

• Timer capture with selectable input pins

– Pulse Width Modulation

• Up to 5 Additional General Purpose Timers

• Fast, Automatic and Smooth Mode Switching

• Built In Watchdog: BOD and POR

– Frequency Modulation and PWM

• 64-pin QFN and 40-pin QFN packages

– Phase Shift Modulation and PWM

• Operating Temperature: –40°C to 125°C

• High Efficiency and Light Load Management

• Fusion Digital Power GUI Support

– Burst Mode

– Ideal Diode Emulation

– Synchronous Rectifier Soft On/Off

– Low IC Standby Power

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date. Products conform to

specifications per the terms of the Texas Instruments standard warranty. Production

processing does not necessarily include testing of all parameters.

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