System Overview; Hardware Overview; System Block Diagram - Texas Instruments UCD9081 User Manual

System Overview

1 System Overview
The system block diagram is shown in
The system consists of these components:
• Host (PC)—a Windows™ personal computer (PC) – used to configure and monitor the UCD9081EVM.
The GUI operates on the host. For the GUI to execute properly, the host needs to have the Windows
.NET v2.0 Framework installed.
• USB-to-I
2
C adapter—UCD9081EVM uses the I
TI-supplied USB-to-I
for communication.
• Power source—UCD9081EVM requires a 5-V, 0.5-A power source. This power is used by the
UCD9081, LEDs, and onboard rails, if used.
• External voltage rails—when configured properly, UCD9081EVM can sequence and monitor external
voltage source as well.
• UCD9081EVM—EVM board that houses the UCD9081 and peripheral circuits. The EVM can sequence
and monitor onboard as well as external voltage rails, as previously explained.
2

Hardware Overview

The UCD9081EVM allows evaluation of the UCD9081 Power Supply Sequencer and Monitor with Error
Logging. The UCD9081 is a highly configurable, 8-channel power supply sequencer (see the
data sheet) with three additional general-purpose digital outputs.
The UCD9081EVM can be configured and monitored through a Windows GUI application running on a
PC. The GUI communicates with the UCD9081EVM through the USB Interface Adapter (included with
EVM kit), which acts as an I
The UCD9081EVM and associated functional controls are shown in
2 UCD9081 Power Supply Sequencer and Monitor EVM
Figure 1.
Figure 1. System Block Diagram
2
C adapter does the appropriate conversion so the host can use the USB interface
2
C master for the board.
UCD9081
2
C™ interface for communication with the host. The
Figure 2.
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SLVS813
SLVU249 – September 2008
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