Texas Instruments LM5156EVM-BST, Руководство пользователя

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1 SNVU696A – February 2020 – Revised June 2020
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Copyright © 2020, Texas Instruments Incorporated
LM5156EVM-BST User's Guide
User's Guide
SNVU696A – February 2020 – Revised June 2020
LM5156EVM-BST User's Guide
The LM5156EVM-BST evaluation module showcases the features and performance of the LM5156
device, wide input voltage, non-synchronous boost controller. The standard configuration is designed to
provide a regulate output of 12 V at 36 W from a minimum input of 4 V, switching at a frequency of 440
kHz, withstanding voltage transients from 3 V to 42 V. The module is designed for ease of configuration,
enabling a user to evaluate different applications on the same module. Functionality includes dual random
spread spectrum (DRSS), external clock synchronization, programmable slope compensation, adjustable
soft-start, programmable cycle-by-cycle current limit, and output over voltage protection.
Contents
1 Features and Electrical Performance
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3
2 Application Schematic
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5
3 EVM Photo
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5
4 Test Setup and Procedure
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6
5 Test Results
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6
6 Design Files
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12
List of Figures
1 Application Circuit
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5
2 EVM Photo
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5
3 Test Setup
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4 Efficiency vs Load
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5 Load Regulation
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6 Thermal Image V
IN
= 4 V I
OUT
= 3 A, No forced air cooling
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8
7 Steady State, V
IN
= 4 V, I
OUT
= 3 A
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9
8 Steady State, V
IN
= 6 V, I
OUT
= 3 A
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9
9 Steady State, V
IN
= 9 V, I
OUT
= 3 A
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9
10 Steady State, V
IN
= 10 V, I
OUT
= 3 A
.......................................................................................
9
11 Start-Up, V
IN
= 4V, I
OUT
= 3 A
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10
12 Start-Up, V
IN
= 6V, I
OUT
= 3 A
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10
13 Start-Up, V
IN
= 9 V, I
OUT
= 3 A
.............................................................................................
10
14 Start-Up, V
IN
= 10 V, I
OUT
= 3 A
...........................................................................................
10
15 Load Transient, V
IN
= 4 V, I
OUT
= 1.5 A to 3 A
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11
16 Load Transient, V
IN
= 6 V, I
OUT
= 1.5 A to 3 A
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11
17 Load Transient, V
IN
= 9 V, I
OUT
= 1.5 A to 3 A
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11
18 Load Transient, V
IN
= 10 V, I
OUT
= 1.5 A to 3 A
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11
19 Control Loop Response, V
IN
= 4 V, I
OUT
= 3 A
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11
20 Control Loop Response, V
IN
= 9 V, I
OUT
= 3 A
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11
21 Top Silkscreen
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12
22 Top Layer
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12
23 Signal Layer 1
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12
24 Signal Layer 2
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12
25 Bottom Layer
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12
26 Bottom Silkscreen
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12