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User’s Guide
LMR38020EVM User Guide
ABSTRACT
The LMR38020EVM is a 80 V DC/DC buck regulator that employs synchronous rectification to achieve high
conversion efficiency in a small footprint. The EVM operates over a wide input voltage range of 6 V to 80 V
to provide a regulated 5 V output at 400 kHz switching frequency. The output voltage has better than 1.5%
setpoint accuracy and is adjustable using an external resistor divider. The module design uses the LMR38020F
synchronous buck converter with wide input voltage (wide V
IN
) range, wide duty-cycle range, integrated high-
side and low-side power MOSFETs, cycle-by-cycle overcurrent protection, and precision enable. The LMR38020
converter is available in an 8-pin SO PowerPAD
™
package to enable high density, low component count DC/DC
solutions. The LMR38020EVM evaluation module is qualified for the LMR38020 as well as the LMR38020-Q1
buck converter. See
for package information.
Table 1-1. Device and Package Configurations
CONVERTER
IC
PACKAGE
U1
LMR38020-Q1
8-pin SO package with PowerPAD (4.89 mm × 3.90 mm)
LMR38020
Table of Contents
1 General TI High Voltage Evaluation User Safety Guidelines
..............................................................................................
List of Figures
List of Tables
Trademarks
PowerPAD
™
is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.
Table of Contents
SNVU787 – JULY 2021
LMR38020EVM User Guide
1
Copyright © 2021 Texas Instruments Incorporated