LM5576EVAL: 5V @ 3A, 7 ~ 75V in

Summary

The LM5576 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5576 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.

This application note contains the evaluation board schematic, Bill-of-Materials (BOM) and a quick setup procedure. Refer to the LM5576 datasheet for complete circuit design information.

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	LM5576EVAL/NOPB-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	5 V
Current Out	3 A
Voltage In	7 ~ 75 V
Efficiency @ Conditions	>90%, 7V in, 5V @ 0.5 ~ 1.5 A >80%, 24V in, 5V @ 0.5 ~ 3 A >78%, 48V in, 5V @ 0.8 ~ 3 A >70%, 75V in, 5V @ 1.2 ~ 3 A
Voltage Out Range	1.225 ~ 14 V
Features	Current Limit (Adj. or Fixed) Short Circuit Protection Shutdown, Enable, Standby Soft Start Thermal Protection
Switching Frequency	300 kHz
Standby Current [Typical]	57 µA
Quiescent Current [Typical]	3.4 mA
Component Count + Extras	18 + 4
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Automotive PoE, Power Over Ethernet Telecom
Standby Current [Maximum]	85 µA
Quiescent Current [Maximum]	4.5 mA
Main I.C. Base Part	LM5576
Date Created By Author
Date Added To Library	2011-03