1
SNVU636–November 2018
Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated
LMR36015xxxEVM User’s Guide
User's Guide
SNVU636–November 2018
LMR36015xxxEVM User’s Guide
The Texas Instruments LMR36015FSCEVM and LMR36015AEVM evaluation modules (EVM) help
designers evaluate the operation and performance of the LMR36015-Q1 wide-input buck regulators. The
LMR36015-Q1 is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 1.5 A
of load current from an input voltage of up to 60 V. The LMR36015FSCEVM features a selectable output
voltage of 3.3 V or 5 V and a switching frequency of 2.1 MHz. The LMR36015AEVM features a selectable
output voltage of 3.3 V or 5 V and a switching frequency of 400 kHz. See the LMR36015-Q1 data sheets
for additional features, detailed descriptions, and available options.
The EVM options are found in Table 1.
Table 1. Device and Package Configurations
EVM U1 FREQUENCY FPWM SPREAD SPECTRUM CURRENT
LMR36015AEVM LMR36015-Q1 400 kHz Disabled Disabled 1.5 A
LMR36015FSCEVM LMR36015-Q1 2.1 MHz Enabled Enabled 1.5 A
Contents
1 Posts, Probes, and Jumpers ............................................................................................... 3
2 Operation ..................................................................................................................... 5
3 Schematic..................................................................................................................... 6
4 Board Layout ................................................................................................................. 7
5 Bill of Materials ............................................................................................................. 13
6 Test Results................................................................................................................. 14
List of Figures
1 EVM Board Connections.................................................................................................... 3
2 Jumper Locations............................................................................................................ 4
3 LMR36015xxxEVM Schematic............................................................................................. 6
4 Top View of EVM ............................................................................................................ 7
5 EVM Top Copper Layer..................................................................................................... 8
6 EVM Mid Layer One......................................................................................................... 9
7 EVM Mid Layer Two ....................................................................................................... 10
8 EVM Bottom Copper Layer ............................................................................................... 11
9 EVM Bottom View.......................................................................................................... 12
10 LMR36015AEVM 5 VOUT Efficiency ...................................................................................... 14
11 LMR36015AEVM 3.3 VOUT Efficiency .................................................................................... 14
12 LMR36015AEVM 5 VOUT Load Regulation .............................................................................. 14
13 LMR36015AEVM 3.3 VOUT Load Regulation............................................................................ 14
14 LMR36015AEVM 5 VOUT Load Transient, 24 VIN, IOUT = 0 A to 1.5 A, TR= TF= 1 µs.............................. 15
15 LMR36015AEVM 3.3 VOUT Load Transient, 24 VIN, IOUT = 0 A to 1.5 A, TR= TF= 1 µs............................ 15
16 LMR36015AEVM 5 VOUT Start-Up Waveform, 24 VIN,1.5 A Load .................................................... 15
17 LMR36015AEVM 3.3 VOUT Start-Up Waveform, 24 VIN,1.5 A Load.................................................. 15
18 LMR36015A Low Frequency Conducted EMI Results for 5 VOUT (Blue-Average and Yellow-Peak) ........... 16
19 LMR36015AEVM High Frequency Conducted EMI Results for 5 VOUT (Blue-Average and Yellow-Peak)...... 16
