1
SNVU583–February 2018
Submit Documentation Feedback 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 LMR33630 data sheet for additional features, detailed description, and available options.
The EVM options are found in Table 1.
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
2 Operation ..................................................................................................................... 6
3 Performance Curves ........................................................................................................ 7
4 Schematic..................................................................................................................... 8
5 Board Layout ................................................................................................................. 9
6 Bill of Materials ............................................................................................................. 14
List of Figures
1 EVM Board Connections.................................................................................................... 2
2 EVM Card Edge Connections.............................................................................................. 3
3 EVM Card Edge Connections for EMI Filter ............................................................................. 4
4 Jumper Locations............................................................................................................ 5
5 FRA Setup.................................................................................................................... 6
6 Efficiency: VIN = 12 V, ƒSW = 2.1 MHz ..................................................................................... 7
7 Efficiency: VIN = 12 V, ƒSW = 400 kHz ..................................................................................... 7
8 LMR33630EVM Schematic................................................................................................. 8
9 Top View of EVM ............................................................................................................ 9
10 EVM Top Copper Layer ................................................................................................... 10
11 EVM Mid-Layer One ....................................................................................................... 11
12 EVM Mid-Layer Two ....................................................................................................... 12
13 EVM Bottom Copper Layer ............................................................................................... 13
Trademarks
All trademarks are the property of their respective owners.
