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UCD9080 Power Supply Sequencer and Monitor
This user's guide describes how to install and operate the UCD9080 Power Supply Sequencer evaluation
module (EVM) and graphical user interface (GUI) application. The guide covers the UCD9080EVM board
functionality and installation, the I
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UCD9080EVM
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System Block Diagram
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GUI Main Window
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GUI System Configuration Window
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GUI Rail Configuration Window
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GUI GPO Configuration Window
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UCD9080 Jumpers
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Hardware Overview
The UCD9080 Power Supply Sequencer EVM is an evaluation module from Texas Instruments for the
UCD9080 Power Supply Sequencer and Monitor. The UCD9080 is a highly configurable, 8-channel power
supply sequencer (see
The hardware can be configured and monitored through a Windows™ interface running on a PC. The GUI
communicates with the hardware through the provided USB Interface Adapter, which acts as an I
master for the board.
This UCD9080EVM has this functionality:
• Sequencing for up to eight power supplies on the board using digital enable signals
• Monitoring for up to eight voltage rails on the board using analog signals
• Power supply enables can be sent off board via a header for sequencing external power supplies
(controlled using jumpers for each rail)
• External voltage rails can be connected to a header on the board for monitoring external power
supplies (controlled using jumpers for each rail)
• Sequencing for up to four digital outputs for reset circuits, etc.
• Jumpers for configuring the I
• Standard 100-kHz I
Windows is a trademark of Microsoft Corporation.
Windows is a trademark of Microsoft Corporation.
SLVU184A - March 2007 - Revised February 2008
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C adapter, plus how to install and use the application software.
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SLVS692
data sheet) with four additional general-purpose digital outputs.
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C address of the UCD9080 (detected at start-up)
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C communication via I
SLVU184A - March 2007 - Revised February 2008
Contents
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List of Figures
List of Tables
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C connector to USB adapter for connection to
UCD9080 Power Supply Sequencer and Monitor Evaluation Module
User's Guide
Evaluation Module
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Summary of Contents for Texas Instruments UCD9080EVM
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Page 1: Table Of Contents
Evaluation Module This user’s guide describes how to install and operate the UCD9080 Power Supply Sequencer evaluation module (EVM) and graphical user interface (GUI) application. The guide covers the UCD9080EVM board functionality and installation, the I C adapter, plus how to install and use the application software. -
Page 2: Hardware Overview
The default behavior of the device (and EVM) is for an external voltage reference. EVM Operation The UCD9080EVM requires power from an AC wall adapter through J1 or from a laboratory power supply through J5. This provides 5 V to power the LEDs, power supplies, and the UCD9080 (using a 3.3-V board regulator). - Page 3 CAUTION Ensure that if you are configuring the UCD9080EVM to monitor an external power supply, the voltage is appropriately scaled down to between 0 V – 2.5 V (if using the internal reference) or between 0 V –...
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Page 4: System Overview
Test Points The UCD9080EVM comes with a set of test points that can be used for evaluation. All eight power supply rails have test points on the right side of the board for monitoring the power supply voltages and the UCD9080EVM supply voltage (3.3 V). -
Page 5: Gui Overview
The system consists of these components: • Host (PC)—a Windows PC – used to configure and monitor the UCD9080EVM. The GUI (explained in the GUI section) runs on the host. For the GUI to execute properly, the host needs to have the Windows .NET v2.0 Framework installed. - Page 6 www.ti.com GUI Overview UCD9080 GUI Main Window The GUI main window helps you monitor the EVM sequencer status and configure the EVM sequencer through the File and View menus. Error Log ERROR registers System Status STATUS register Statistics Communication Statistics (GUI only) Rail Status RAILSTATUS and RAIL registers...
- Page 7 UnsequenceTime registers in the UCD9080 device data sheet (SLVS692). • Voltage Reference—selects the device voltage reference. The UCD9080EVM is configured by default to use the external reference (VCC supply for the sequencer). When VCC is selected as the reference, the GUI provides for actual VCC calibration to be entered.
- Page 8 www.ti.com GUI Overview • Store to Buffer and Close Buttons—The Store to Buffer button saves the current window entries to a GUI buffer and the Close button closes the window without saving the form entries. GUI Rail Configuration Window The Rail Configuration window on the GUI is shown in Figure 5 and permits you to configure these UCD9080 items:...
- Page 9 www.ti.com GUI Overview 3.4.2 Sequencing Conditions Selections Voltage rail sequencing conditions are: • None—rail is not sequenced. • Time—number of milliseconds before this rail is enabled. • Parent (Reg)—number of milliseconds to delay after the parent rail achieves regulation before enabling this rail.
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Page 10: Evm Design Configuration Information
www.ti.com EVM Design Configuration Information 3.5.2 Sequencing Conditions Selections Sequencing conditions for a GPO • None—GPO is not sequenced • Time—number of milliseconds before this GPO is enabled • Parent (Reg)—number of milliseconds to delay after the parent rail achieves regulation before enabling this GPO •... - Page 11 www.ti.com EVM Design Configuration Information Rail and GUI Divider Selection Use these equations to choose the external Rail and GUI divider resistor values. Note: Setting R and R to 0 in the GUI yields a D value of 1. pullup pulldown •...
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Page 12: Evm Schematic And Bill Of Materials
www.ti.com EVM Schematic and Bill of Materials EVM Schematic and Bill of Materials EVM Schematic UCD9080 Power Supply Sequencer and Monitor Evaluation Module SLVU184A – March 2007 – Revised February 2008 Submit Documentation Feedback... - Page 13 www.ti.com EVM Schematic and Bill of Materials Bill of Materials Count RefDes Value Description Size Part Number 100 µF C1, C4 Capacitor, Tantalum, 10V, 10% 6032 TAJC107K010R 2.2 µF Capacitor, Ceramic, 6.3V, X7R, 20% 0805 Murata 1 µF Capacitor, Ceramic, 10V, X7R, 20% 0603 Murata 10 µF...
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Page 14: Related Documentation From Texas Instruments
Related Documentation From Texas Instruments Count RefDes Value Description Size Part Number IC, Power Supply Sequencer and Monitor QFN-32 UCD9080RHB — Shunt, 100-mil, Black 929950-00 PCB, 5.3 In × 4.2 In × 0.062 Inch — HPA199 Bumpons 2567 Related Documentation From Texas Instruments •... - Page 15 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
- Page 16 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
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