Texas Instruments TPS548A28, User Manual

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1 SLVUBO0A – March 2020 – Revised May 2020
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Copyright © 2020, Texas Instruments Incorporated
Using the TPS54JA20EVM-023 12-A, Buck Converter Evaluation Module
User's Guide
SLVUBO0A – March 2020 – Revised May 2020
Using the TPS54JA20EVM-023 12-A, Buck Converter
Evaluation Module
This user’s guide contains information for the TPS54JA20EVM-023 evaluation module (EVM) as well as
for the TPS54JA20 DC/DC converter. Also included are the performance specifications, the schematic,
and the list of materials for the TPS54JA20EVM.
Contents
1 Introduction
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2
1.1 Background
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2
1.2 Performance Specification Summary
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3
1.3 Modifications
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3
2 Test Setup and Results
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2.1 Input/Output Connections
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5
2.2 Start Up Procedure
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5
2.3 Efficiency
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6
2.4 Load Regulation
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2.5 Load Transients
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9
2.6 Loop Characteristics
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2.7 Output Voltage Ripple
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2.8 Powering Up
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3 Schematic, List of Materials, and Layout
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13
3.1 Schematic
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3.2 List of Materials
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3.3 Layout
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16
List of Figures
1 Safety Warnings
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2
2 TPS54JA20 Efficiency Plot: Vin Range
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3 TPS54JA20 Efficiency Plot: Vcc Range
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4 TPS54JA20 Efficiency Plot: Skip Mode
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5 TPS54JA20 Efficiency Plot: FCCM and Skip Mode
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6 TPS54JA20 Load Regulation
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7 TPS54JA20 Load Regulation
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8 TPS54JA20 Load Transient Response
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9 TPS54JA20 Load Transient Response
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10 TPS54JA20 Bode Plot
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11 TPS54JA20 Output Ripple, No Load
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12 TPS54JA20 Output Ripple, 12-A Load
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13 TPS54JA20 Output Ripple, Skip Mode, 10mA Load
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14 TPS54JA20 Enable Start-Up, 12A Load
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15 TPS54JA20 EN Shutdown, 12A Load
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16 TPS54JA20EVM Top-Side Layout
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17 TPS54JA20EVM Internal Layer-1 Layout
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18 TPS54JA20EVM Internal Layer-2 Layout
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18