Microchip Technology MCP19114, Руководство пользователя

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MCP19114 - FLYBACK
STAND-ALONE EVALUATION
BOARD USER’S GUIDE

2014 Microchip Technology Inc. DS50002255A-page 13
Chapter 2. Installation and Operation
2.1 INTRODUCTION
2.1.1 MCP19114 - Flyback Stand-Alone Evaluation Board Features
The MCP19114 is a digitally-enhanced, power analog, synchronous low-side
pulse-width modulation (PWM) controller. The graphical user interface was developed
to assist users in easily configuring the MCP19114 and evaluating it in their target
application.
The MCP19114 - Flyback Stand-Alone Evaluation Board is designed to operate from a
single supply (nominal 8V to 14V, 24V maximum). The primary side MOSFET has a
maximum V
DS
rating of 100V. Users should be cautious that this 100V rating is not
exceeded when determining input and output conditions for their application. The
coupled inductor has a 2:1 ratio. The secondary MOSFET has a 200V maximum V
DS
rating.
The default configuration provides the gate drive supply (V
DR
) with 10V. Adequate
ceramic and bulk capacitors are supplied on the input to reduce the root mean square
(RMS) ripple current and lessen input voltage deviation caused by load transients.
Ceramic capacitors are also provided on the output to reduce voltage ripple and pro-
vide energy to the output while the primary side is being re-energized.
The MCP19114 - Flyback Stand-Alone Evaluation Board is fully assembled, pro-
grammed and tested to evaluate and demonstrate the MCP19114 operating perfor-
mance. Users will need to download and install the MCP19114 - Flyback Stand-Alone
GUI from the Microchip website and become familiar with its operation before powering
the MCP19114 - Flyback Stand-Alone Evaluation Board.
2.2 GETTING STARTED
2.2.1 Configuration Requirements
To power up and run the MCP19114 - Flyback Stand-Alone Evaluation Board, the
following is required:
• MCP19114 - Flyback Stand-Alone GUI
• MCP19114 - Flyback Stand-Alone Evaluation Board
• PICkit Serial Analyzer
2.2.2 Installing the MCP19114 - Flyback Stand-Alone GUI
Follow the steps to download and install the MCP19114 - Flyback Stand-Alone GUI:
1. Download the MCP19114 - Flyback Stand-Alone GUI software package from the
Microchip web site.
2. Extract the content of the archive files on the computer.
3. Double-click the
setup.exe
file to start software installation. Press the Install
button in the Application Install window ( Figure 2-1 ). Once the installation
completes, the GUI window will open (see Figure 3-1 in Chapter 2. “Installation
and Operation” ).
Note: The factory-loaded firmware REQUIRES the use of the provided GUI to
function. Without the GUI, the evaluation board will not operate.