Texas Instruments: LM5576EVAL Evaluation Board for LM5576 Step-Down Switching Regulator

atomar — Wed, 25 Jun 2014 00:53:06 GMT

Current Revision posted to Documents by atomar on 6/25/2014 12:53:06 AM

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Kit Overview

The LM5576LM5576 evaluation board LM5576EVALLM5576EVAL is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the multiProductLinkLM5576 regulator IC. The evaluation board provides a 5V output with a 3A current capability. The ultra-wide input voltage ranges from 7V to 75V. The design operates at 300kHz, a good compromise between conversion efficiency and solution size. The printed circuit board consists of 2 layers of 2 ounce copper on FR4 material with a thickness of 0.06 inches.

The LM5576LM5576 is an easy to use SIMPLE SWITCHER® buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 - 75V, the multiProductLinkLM5576 delivers 3A of continuous output current with an integrated 170mΩ N-Channel MOSFET.

The regulator utilizes an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease of loop compensation without the usual limitation of low-duty cycles associated with current mode regulators.

The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5576LM5576 guarantees robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down.The multiProductLinkLM5576 is supported by the full suite of WEBENCH® On-Line design tools.

Key Applications: Automotive, Industrial

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Technical Documents

Learning Center

Type	Description
User Guide	TI: User Guide for LM5576 Evaluation Board
User Guide	TI: Quick Start Guide for a 3 Amp Buck Regulator Using the LM5576
Datasheet	TI: Data Sheet for LM5576 SIMPLE SWITCHER 75V, 3A Step-Down Switching Regulator
Application Note	TI: Application Note for Techniques for Thermal Analysis of Switching Power Supply Designs

Design Elements

Type	Description
Application Library	TI: Software code for LM(2)557x Quick Start SIMPLE SWITCHER Component Calculator
CAD Model	TI: CAD Model for LM5576 (BXL File Format)
Simulation Model	TI: PSpice Transient Model for LM5576

Video

Kit Features

LM5576EVALLM5576EVAL Features:

Input Range: 7 to 75V
Output Voltage: 5V
Output Current: 0 to 3A
Frequency of Operation: 300 KHz
Board Size: 2.75 X 1 X 0.4 inches
Load Regulation: 1%
Line Regulation: 0.1%
Over Current Limiting

LM5576LM5576 Features:

LM5576Q is an Automotive Grade product that is AECQ100 grade 1 qualified (−40°C to + 125°C operating junction temperature)
Integrated 75V, 170mΩ N-channel MOSFET
Ultra-wide input voltage range from 6V to 75V
Adjustable output voltage as low as 1.225V
1.5% feedback reference accuracy
Operating frequency adjustable between 50kHz and 500kHz with single resistor
Master or slave frequency synchronization
Adjustable soft-start
Emulated current mode control architecture
Wide bandwidth error amplifier
Built-in protection
Automotive Grade product datasheet that is AEC-Q100 grade 0 qualified is available upon request. (−40°C to + 150°C operating junction temperature)
TSSOP-20EP (Exposed Pad) Package

Kit Contents

The Texas Instrument's LM5576EVALLM5576EVAL Supplied with below contents:

LM5576EVALLM5576EVAL LM5576LM5576 Evaluation Board

Tags: aecq100, lm5576eval, lm5576, texas_instruments, evaluation_board