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User's Guide
SLVU347–December 2009
Evaluation Module for UCD90120 and UCD90124
This User’s Guide describes the evaluation modules (EVM) for the UCD90120 (UCD90120EVM) and
UCD90124 (UCD90124EVM). The EVM contains evaluation and reference circuitry for the UCD90120 and
UCD90124. UCD90120 and UCD90124 are advanced power system controllers containing sequencing,
monitoring, fan control and many other power supply system support features.
Contents
1 Description ................................................................................................................... 2
1.1 Features ............................................................................................................. 2
1.2 Applications ......................................................................................................... 2
2 Quick Start ................................................................................................................... 3
2.1 Test Setup .......................................................................................................... 3
2.2 EVM Layout View .................................................................................................. 4
2.3 EVM Block Diagram ............................................................................................... 5
3 UCD90120/4 EVM GUI Setup ............................................................................................. 6
3.1 UCD90120/4 EVM GUI Installation .............................................................................. 6
3.2 UCD90120/4 EVM GUI Operation ............................................................................... 7
4 General Use Features ...................................................................................................... 9
4.1 EVM Input/Output Connectors and Switches .................................................................. 9
4.2 EVM LEDS ........................................................................................................ 10
4.3 EVM Test Points .................................................................................................. 11
4.4 EVM Test Jumpers ............................................................................................... 13
5 Description ................................................................................................................. 15
5.1 Communication Interfaces ....................................................................................... 15
5.2 Power .............................................................................................................. 15
5.3 Test/Debug and Status .......................................................................................... 16
5.4 Digital I/O Terminations .......................................................................................... 16
5.5 Analog Monitor Inputs ............................................................................................ 16
5.6 Local Voltage Rails ............................................................................................... 17
5.7 External Temperature Sensor .................................................................................. 17
5.8 Input Current Monitoring ......................................................................................... 21
5.9 Closed Loop Voltage Margining ................................................................................ 25
5.10 Fan Interface ...................................................................................................... 30
6 Bill of Materials ............................................................................................................. 31
7 Layout Guidelines, EVM Schematic, and Assembly Drawings ...................................................... 37
7.1 Layout Guidelines ................................................................................................ 37
7.2 EVM Schematic ................................................................................................... 37
7.3 Assembly Drawings .............................................................................................. 37
List of Figures
1 Typical Test Setup.......................................................................................................... 3
2 UCD90120/4 EVM View.................................................................................................... 4
3 UCD90120/4 EVM Block Diagram........................................................................................ 5
List of Tables
1 EVM Input/Output Connectors and Switches ........................................................................... 9
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SLVU347–December 2009 Evaluation Module for UCD90120 and UCD90124
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