Texas Instruments LM5157EVM-BST User Manual

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User's Guide
LM5157EVM-BST Evaluation Module
The LM5157EVM-BST evaluation module showcases the features and performance of the LM5157 device
as wide input voltage, non-synchronous boost converter with dual random spread spectrum. The standard
configuration is designed to provide a regulated output of 12 V at 1.6 A from an input of 3 V to 9 V (load derated
for input voltages below 6 V), switching at a frequency of 2.1 MHz.
1 Features and Electrical Performance...................................................................................................................................
2 Application Schematic...........................................................................................................................................................
3 EVM Picture.............................................................................................................................................................................6
4 Test Setup and Procedure......................................................................................................................................................7
5 Test Results.............................................................................................................................................................................8
6 Design Files...........................................................................................................................................................................14
7 Revision History...................................................................................................................................................................
Figure 2-1. Application Circuit......................................................................................................................................................5
Figure 3-1. EVM Picture..............................................................................................................................................................
Figure 4-1. Test Setup.................................................................................................................................................................
Figure 5-1. Efficiency vs Load......................................................................................................................................................8
Figure 5-2. Load Regulation........................................................................................................................................................
Figure 5-3. Thermal Image V
Figure 5-4. Thermal Image V
Figure 5-5. Thermal Image V
Figure 5-6. Thermal Image V
Figure 5-7. Steady State, V
Figure 5-8. Steady State, V
Figure 5-9. Steady State, V
Figure 5-10. Start-Up, V = 3 V, I
IN
Figure 5-11. Start-Up, V = 6 V, I
IN
Figure 5-12. Start-Up, V = 9 V, I
IN
Figure 5-13. Load Transient, V
Figure 5-14. Load Transient, V
Figure 5-15. Load Transient, V
Figure 5-16. Control Loop Response, V
Figure 5-17. Control Loop Response, V
Figure 5-18. Control Loop Response, V
Figure 6-1. Top Layer and Silkscreen........................................................................................................................................
Figure 6-2. Top Layer.................................................................................................................................................................14
Figure 6-3. Signal Layer 1.........................................................................................................................................................
Figure 6-4. Signal Layer 2.........................................................................................................................................................
Figure 6-5. Bottom Layer...........................................................................................................................................................
Figure 6-6. Bottom Layer and Silkscreen
Figure 6-7. LM5157EVM-BST
Table 1-1. Electrical Performance Standard
Table 1-2. Jumper Description.....................................................................................................................................................
Table 4-1. Standard Configuration Jumper Connections.............................................................................................................
SNVU739A - OCTOBER 2020 - REVISED AUGUST 2021
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Table of Contents

List of Figures
= 3 V I = 0.6 A, V
IN OUT BIAS
= 3 V I = 0.6 A, V
IN OUT BIAS
= 6 V I = 1.6 A, V
IN OUT BIAS
= 9 V I = 1.6 A, V
IN OUT BIAS
= 3 V, I = 0.6 A......................................................................................................................
IN OUT
= 6 V, I = 1.6 A......................................................................................................................
IN OUT
= 9 V, I = 1.6 A......................................................................................................................
IN OUT
= 0.6 A (20 Ω).................................................................................................................11
OUT
= 1.6 A (7.5 Ω)................................................................................................................
OUT
= 1.6 A (7.5 Ω)................................................................................................................11
OUT
= 3 V, I = 0.3 A to 0.6
IN OUT
= 6 V, I = 0.8 A to 1.6
IN OUT
= 9 V, I = 0.8 A to 1.6
IN OUT
= 3 V, I = 0.6 A...................................................................................................
IN OUT
= 6 V, I = 1.6A....................................................................................................
IN OUT
= 9 V, I = 1.6 A...................................................................................................
IN OUT
(mirrored)..................................................................................................................14
Schematic..................................................................................................................................15
List of Tables
Configuration..........................................................................................................3
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ABSTRACT
= V , no Forced Air Cooling..............................................................
IN
= 12 V, no Forced Air Cooling............................................................
= V , no Forced Air Cooling..............................................................
IN
= V , no Forced Air Cooling..............................................................
IN
A....................................................................................................12
A....................................................................................................12
A....................................................................................................12
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LM5157EVM-BST Evaluation Module
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