LM5045EVAL: 3.3V @ 30A, 36 ~ 75V in

Summary

The LM5045 evaluation board is designed to provide the design engineer with a fully functional power converter based on the full-bridge topology to evaluate the LM5045 PWM controller. The evaluation board is provided in an industry standard quarter brick footprint.

The performance of the evaluation board is as follows:

Input operating range: 36V to 75V
Output voltage: 3.3V
Measured efficiency at 48V: 92% @ 30A
Frequency of operation: 420kHz
Board size: 2.28 x 1.45 x 0.5 inches
Load Regulation: 0.2%
Line Regulation: 0.1%
Line UVLO (34V/32V on/off)
Hiccup Mode Current Limit

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	LM5045EVAL/NOPB-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Isolated
Voltage Out: Factory Set	3.3 V
Current Out	30 A
Voltage In	36 ~ 75 V
Efficiency @ Conditions	>90%, 48V in, 3.3V @ 12 ~ 30 A >90%, 36V in, 3.3V @ 9 ~ 30 A >88%, 72V in, 3.3V @ 13 ~ 30 A
Voltage Out Range	- Not Given
Features	Light Load Mode Over Current Protection Over Voltage Protection Pre-Biased Startup Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	420 kHz
Standby Current [Typical]	300 µA
Quiescent Current [Typical]	4 mA
Component Count + Extras	112 + 7
Internal Switch	No
Design Author	Texas Instruments
Application / Target Market	Point of Load (PoL)
Standby Current [Maximum]	550 µA
Quiescent Current [Maximum]
Main I.C. Base Part	LM5045
Date Created By Author	2012-02
Date Added To Library	2012-04