Texas Instruments TPS548D21EVM-784, User Manual

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Introduction
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2 SLUUBG3A – July 2016 – Revised August 2016
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Copyright © 2016, Texas Instruments Incorporated
TPS548D21EVM-784, 40-A Single Synchronous Step-Down Converter With
Full Differential Sense
11 Output Ripple and SW Node of 1-V Output at 12 V
IN
, 40-A Output
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12 Start up from Control, 1-V Output at 12 V
IN
, 40-A Output
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13 0.5-V Pre-bias start up from Control, 1-V Output at 12 V
IN
, 40-A Output
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14 Soft Stop from Control, 1-V Output at 12 V
IN
, 40-A Output
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15 Thermal Image at 1-V Output at 12 V
IN
, 40-A Output
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16 PWR-784EVM Top Layer Assembly Drawing (Top View)
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17 PWR-784EVM Top Solder Mask (Top View)
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18 PWR-784EVM Top Layer (Top View)
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19 PWR-784EVM Inner Layer 1 (Top View)
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20 PWR-784EVM Inner Layer 2 (Top View)
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21 PWR-784EVM Inner Layer 3 (Top View)
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22 PWR-784EVM Inner Layer 4 (Top View)
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23 PWR-784EVM Bottom Layer (Top View)
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24 PWR-784EVM Bottom Solder Mask (Top View)
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25 PWR-784EVM Bottom Overlay Layer (Top View)
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List of Tables
1 PWR-784EVM Electrical Performance Specifications
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2 Test Point Functions
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3 List of Test Points for Line and Load Measurements
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4 List of Test Points for Efficiency Measurements
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5 PWR784 List of Materials
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1 Introduction
The PWR784EVM evaluation module uses the TPS548D21 device. The TPS548D21 is a highly integrated
synchronous buck converter that is designed for up to 40-A current output.
2 Description
The PWR784EVM is designed as a single output DC-DC converter that demonstrates the TPS548D21 in
a typical low-voltage application while providing a number of test points to evaluate the performance. It
uses a nominal 12-V input bus to produce a regulated 1-V output at up to 40-A load current.
2.1 Typical End-User Applications
• Enterprise storage, SSD, NAS
• Wireless and wired communication infrastructure
• Industrial PCs, automation, ATE, PLC, video surveillance
• Enterprise server, switches, routers
• ASIC, SoC, FPGA, DSP core and I/O rails
2.2 EVM Features
• Regulated 1-V output up to 40-A, steady-state output current
• Convenient test points for probing critical waveforms