Texas Instruments TPS53667EVM-769 User Manual

Using the TPS53667EVM-769, 6-Phase, D-CAP+ Step-
This User Guide describes the evaluation module (EVM) for the TPS53667 analog power controller, a
driverless D-CAP+™ buck controller, which manages six 30-A phases of the CSD95490, a NexFet™
Smart Synchronous Buck Power Stage. In addition, this document provides instructions for accessing the
controller's non-volatile memory (NVM) with the integrated PMBus™ interface to allow access to additional
configuration, monitoring and control functions/options.
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1 Description
2 Typical Applications
2.1 Features
3 Electrical Performance Specifications
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4 Schematic
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5 Test Setup
5.1 Test and Configuration Software
5.2 Test Equipment
5.3 Recommended Test Setup
5.4 USB Interface Adapter and Cable
5.5 List of Test Points and Connectors
6 EVM Configuration Using the Fusion GUI
6.1 Configuration Procedure
7 Test Procedure
7.1 Line/Load Regulation and Efficiency Measurement Procedure
7.2 Control Loop Gain and Phase Measurement Procedure
7.3 Efficiency
7.4 Equipment Turn-on and Shutdown
8 Performance Data and Typical Characteristic Curves
9 EVM Assembly Drawing and PCB Layout
10 List of Materials
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11 Fusion GUI
1 Description
The TPS53667EVM-769 implements a typical application for a low-voltage, high current single output
power converter, operating from a nominal 12-V input rail to produce a 1.0-V output rail at up to 180 A of
load current. The EVM includes test points for evaluating the performance of the TPS53667 controller and
CSD95490 power stages.
For the ease of evaluation, the EVM is supplied using the pin-strapped configuration mode and requires
only two (12-V and 5-V) input supplies and an output load to get started with testing. With the addition of
the Fusion Digital Power™ Designer software download, the EVM's PMBus™ interface allows access to
the controller NVM for evaluation of additional configuration, control and monitoring possibilities. Refer to
the TPS53667 datasheet (SLUSC40) for complete information on configuring multi-phase operation with
this controller.
SLUUBH9 – May 2017
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Down, DC-DC Analog with PMBus™ Interface
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Using the TPS53667EVM-769, 6-Phase, D-CAP+ Step-Down, DC-DC Analog
Copyright © 2017, Texas Instruments Incorporated
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User's Guide
SLUUBH9 – May 2017
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with PMBus™ Interface
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