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SNVU583 – February 2018
Copyright © 2018, Texas Instruments Incorporated
LMR33630xRNXEVM User’s Guide
User's Guide
SNVU583 – February 2018
LMR33630xRNXEVM User’s Guide
The Texas Instruments LMR33630ARNXEVM and LMR33630CRNXEVM evaluation modules help
designers to evaluate the operation and performance of the LMR33630A and LMR33630C buck
regulators. The LMR33630 is a family of easy-to-use synchronous step-down DC-DC converters capable
of driving up to 3 A of load current from an input voltage of 3.8 V to 36 V. The LMR33630xRNXEVMs
feature a selectable output voltage of 3.3 V or 5 V and a switching frequency of either 400 kHz or 2.1
MHz. See the
for additional features, detailed description, and available options.
The EVM options are found in
Table 1. Device and Package Configurations
EVM
DEVICE
FREQUENCY / Output Current
LMR33630ARNXEVM
LMR33630ARNX
400 kHz / 3A
LMR33630CRNXEVM
LMR33630CRNX
2100 kHz / 3A
Contents
1
Setup
..........................................................................................................................
2
Operation
.....................................................................................................................
3
Performance Curves
........................................................................................................
4
Schematic
.....................................................................................................................
5
Board Layout
.................................................................................................................
6
Bill of Materials
.............................................................................................................
List of Figures
1
EVM Board Connections
....................................................................................................
2
EVM Card Edge Connections
..............................................................................................
3
EVM Card Edge Connections for EMI Filter
.............................................................................
4
Jumper Locations
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5
FRA Setup
....................................................................................................................
6
Efficiency: V
IN
= 12 V, ƒ
SW
= 2.1 MHz
.....................................................................................
7
Efficiency: V
IN
= 12 V, ƒ
SW
= 400 kHz
.....................................................................................
8
LMR33630EVM Schematic
.................................................................................................
9
Top View of EVM
............................................................................................................
10
EVM Top Copper Layer
...................................................................................................
11
EVM Mid-Layer One
.......................................................................................................
12
EVM Mid-Layer Two
.......................................................................................................
13
EVM Bottom Copper Layer
...............................................................................................
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