LMS3655NQEVM: 3.3V @ 5.5A, 3.5 ~ 36V in

Summary

The LMS3655NQEVM evaluation module (EVM) demonstrates the capabilities of the LMS3655-Q1 automotive integrated buck converter. For optimized EMI performance, the LMS3655-Q1 has Spread Spectrum built in and the EVM has an EMI filter on the back side that assists with noise reduction. The user can choose to bypass that EMI filter using VIN1/GND1 posts. The EVM operates from a 3.8V to 36V input (up to 42V transients) and provides a fixed 3.3V output at 5.5A continuous load.

Features:

High Efficiency with 400kHz and Auto Light Mode PFM/PWM or Forced PWM Mode operation
/RESET Power Good output with 3ms delay on timer
External Frequency Synchronisation Input
Low EMI
Fully Synchronous with integrated HS and LS FET

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	296-48019-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	5.5 A
Voltage In	3.5 ~ 36 V
Efficiency @ Conditions	>95%, 6V in, 3.3V @ 0.02 ~ 2 A >90%, 18V in, 3.3V @ 0.01 ~ 4 A >90%, 12V in, 3.3V @ 0.003 ~ 4.5 A >85%, 24V in, 3.3V @ 0.003 ~ 5.5 A
Voltage Out Range	- Fixed
Features	Current Limit (Adj. or Fixed) Light Load Mode PFM or PWM Power Good Output Shutdown, Enable, Standby Soft Start Spread Spectrum Modulation Synchronizable Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	400 kHz
Standby Current [Typical]	2 µA
Quiescent Current [Typical]	7.5 µA
Component Count + Extras	29 + 23
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Automotive
Standby Current [Maximum]	3 µA
Quiescent Current [Maximum]	16 µA
Main I.C. Base Part	LMS3655
Date Created By Author	2017-07
Date Added To Library	2021-06