LM20242EVAL: 3.3V @ 2A, 8 ~ 36V, 300kHz

Summary

The LM20242 synchronous rectifier Buck evaluation board is designed to provide the design engineer with a fully functional Buck power converter based on Current Mode Control to evaluate the LM20242 switching regulator IC.

The evaluation board provides a 3.3V output with 2A current capability. The input voltage ranges from 8V to 36V. The design operates at 300 kHz, 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 LM20242 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	296-LM20242EVAL/NOPB-ND
Eval Board Supplier	Texas Instruments
Eval Board	Board not Stocked
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	3.3 V
Current Out	2 A
Voltage In	8 ~ 36 V
Efficiency @ Conditions	>90%, 8V in, 3.3V @ 250 mA ~ 2 A >89%, 12V in, 3.3V @ 500 mA ~ 2 A >87%, 24V in, 3.3V @ 1 ~ 2 A >82%, 36V in, 3.3V @ 1 ~ 2 A
Voltage Out Range	0.8 ~ 32 V
Features	Over Current Protection Over Voltage Protection Power Good Output Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	300 kHz
Standby Current [Typical]	150 µA
Quiescent Current [Typical]	2 mA
Component Count + Extras	22 + 8
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Automotive FPGA / DSP / Processors Point of Load (PoL)
Standby Current [Maximum]	180 µA
Quiescent Current [Maximum]	3 mA
Main I.C. Base Part	LM20242
Date Created By Author
Date Added To Library	2011-03