Texas instruments LMR36525 User Manual
User's Guide
SNVU677–June 2019
LMR36525 EVM User’s Guide
The Texas Instruments LMR36525 EVM evaluation module (EVM) helps designers evaluate the operation
and performance of the LMR36525 buck regulator. The LMR36525 is a family of easy-to-use synchronous
step-down DC/DC converters capable of driving up to 2 A of load current from an input voltage of 4.2 V to
65 V. The LMR36525 EVM features a selectable output voltage of 3.3 V or 5 V and a switching frequency
of 400 kHz. See the LMR36520 data sheet for additional features, detailed description, and available
options.
Table 1 shows the EVM options.
Table 1. Device and Package Configurations
EVM DEVICE FREQUENCY / OUTPUT
CURRENT
LMR36525AEVM LMR36525ADDAR 400 kHz / 2A No
Contents
1 Setup .......................................................................................................................... 3
2 Operation ..................................................................................................................... 5
3 Schematic..................................................................................................................... 6
4 Board Layout ................................................................................................................. 6
5 Bill of Materials............................................................................................................... 9
SPREAD
SPECTRUM
1 EVM Board Connections.................................................................................................... 3
2 EVM Card Edge Connections.............................................................................................. 3
3 Jumper Locations............................................................................................................ 4
4 FRA Setup.................................................................................................................... 5
5 LMR36525AEVM Schematic............................................................................................... 6
6 Top View of EVM ............................................................................................................ 6
7 EVM Top Copper Layer..................................................................................................... 7
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List of Figures
Copyright © 2019, Texas Instruments Incorporated
LMR36525 EVM User’s Guide
1
8 EVM Mid-Layer One......................................................................................................... 7
9 EVM Mid-Layer Two......................................................................................................... 8
10 EVM Bottom Copper Layer................................................................................................. 8
1 Device and Package Configurations ...................................................................................... 1
2 BOM for LMR36525AEVM.................................................................................................. 9
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List of Tables
2
LMR36525 EVM User’s Guide
Copyright © 2019, Texas Instruments Incorporated
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GND
VOUT
GNDS
VOS
TOP FRONT
BOTTOM FRONT
VIS
VINEMI
INPUT
SUPPLY
LOAD
(+) (-)
(-) (+)
(+)(-)
DMMDMM
(-)(+)
Load
(+)
(-)
Input
Supply
(-)
(+)
DMM
(-) (+)
DMM
(-) (+)
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1 Setup
This section describes the test points and connectors on the EVM and how to properly connect, set up,
and use the LMR36525AEVM. Either the banana jacks and test points on the top of the board can be
used for connections, or the card edge connector can be used. See Figure 1 for the top of board
connections, and Figure 2 for the card edge connections. The following lists the functions of the
connections:
• VINEMI - Input supply to EVM with an EMI filter. Connect to a suitable input supply. See LMR36525
data sheets for input supply requirements.
• GND - System ground
• VOUT - Output of EVM. Connect to the desired load.
• VOS - Output voltage sense connection
• VIS - Input voltage sense connection
• GNDS - Ground sense point for analog measurements
Setup
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Figure 1. EVM Board Connections
Figure 2. EVM Card Edge Connections
3
Copyright © 2019, Texas Instruments Incorporated
LMR36525 EVM User’s Guide
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