Texas Instruments LMR36015 EVM Series, Руководство пользователя

Страница: 1 / 24

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 V
OUT
Efficiency
......................................................................................
14
11 LMR36015AEVM 3.3 V
OUT
Efficiency
....................................................................................
14
12 LMR36015AEVM 5 V
OUT
Load Regulation
..............................................................................
14
13 LMR36015AEVM 3.3 V
OUT
Load Regulation
............................................................................
14
14 LMR36015AEVM 5 V
OUT
Load Transient, 24 V
IN
, I
OUT
= 0 A to 1.5 A, T
R
= T
F
= 1 µs
..............................
15
15 LMR36015AEVM 3.3 V
OUT
Load Transient, 24 V
IN
, I
OUT
= 0 A to 1.5 A, T
R
= T
F
= 1 µs
............................
15
16 LMR36015AEVM 5 V
OUT
Start-Up Waveform, 24 V
IN
,1.5 A Load
....................................................
15
17 LMR36015AEVM 3.3 V
OUT
Start-Up Waveform, 24 V
IN
,1.5 A Load
..................................................
15
18 LMR36015A Low Frequency Conducted EMI Results for 5 V
OUT
(Blue-Average and Yellow-Peak)
...........
16
19 LMR36015AEVM High Frequency Conducted EMI Results for 5 V
OUT
(Blue-Average and Yellow-Peak)
......
16