Microchip Technology MCP19114, User Manual

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MCP19114 - Flyback Stand-Alone Evaluation Board User’s Guide
DS50002255A-page 22
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2014 Microchip Technology Inc.
The VINUVLO and VINOVLO Protection parameters are configurable per their
specified ranges. The specified range for VINUVLO is 4V to 20V. The default VINUVLO
setting in the GUI is 8V. The specified VINOVLO range is 9V to 24V. The default
VINOVLO setting in the GUI is 18V. The Output OV has a configurable range between
0V and 60V. The default OV setting in the GUI is 40V.
The LED (D2) on the evaluation board is used to indicate various fault conditions. The
firmware will flash this LED to indicate each of the following fault conditions:
• VIN UVLO FAULT : Short Flash Routine
• VIN OVLO FAULT : Long Flash Routine
• OUTPUT OV FAULT : Short/Long Flash Routine
3.2.1.5 TEST PIN
This section of the GUI has a drop-down menu that allows users to select and connect
test signals to GPIO GPA0.
These signals are accessible at the test point labeled TEST.
The Test Pin can be configured to output several analog or digital parameters. See
Figure 3-5 for the list of signals.
FIGURE 3-5: Test Pin Options.
3.2.1.6 SWITCHES ENABLE/DISABLE
There are two general purpose MOSFET low-side series switches located on
MCP19114 - Flyback Stand-Alone Evaluation Board (LSW1 and LSW2). The control
boxes in the Switches Enable/Disable section of the GUI allow the user to turn these
switches ON (checked) and OFF (unchecked).
WARNING
Use caution when changing from these default settings to ensure that damage will not
occur. The VINUVLO, VINOVLO and Output OV controls adjust the VINUVLO, VINOVLO
and OVREFCON registers, respectively.