Microchip Technology MCP19114, Руководство пользователя

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MCP19114 - Flyback Stand-Alone Evaluation Board User’s Guide
DS50002255A-page 12

2014 Microchip Technology Inc.
FIGURE 1-1: Typical MCP19114 Flyback Application – Two String LED Driver.
1.3 WHAT IS THE MCP19114 - FLYBACK STAND-ALONE EVALUATION BOARD?
The MCP19114 - Flyback Stand-Alone Evaluation Board is intended to demonstrate
how the MCP19114 device operates in a synchronous flyback topology. It is configured
to regulate load current and is also well-suited to drive LED loads. Nearly all operational
and control system parameters are programmable by utilizing the integrated PIC
Microcontroller core.
The MCP19114 comes preprogrammed with firmware designed to operate with the
GUI interface. MPLABX IDE software can be used to download user defined firmware,
and thus tailoring it to their specific application.The evaluation board contains headers
for In-Circuit Serial Programming
™
(ICSP) as well as I
2
C communication.
Several test points have been designed into the printed circuit board for easy access
and development purposes. The MCP19114 - Flyback Stand-Alone Evaluation Board
is also intended to demonstrate an optimized Printed Circuit Board (PCB) layout that
minimizes parasitics while increasing efficiency and power density. Proper PCB layout
is critical to achieve optimum MCP19114 operation as well as power train efficiency and
noise minimization. MPLABX IDE, MCP19114 - Flyback Stand-Alone GUI and
MCP19114 - Flyback Stand-Alone Firmware are available for download from
Microchip’s web site. See
Chapter 3. “Graphical User Interface (GUI)” for details.
1.4 MCP19114 - FLYBACK STAND-ALONE EVALUATION BOARD KIT
CONTENTS
The MCP19114 - Flyback Stand-Alone Evaluation Board includes the following items:
• MCP19114 - Flyback Stand-Alone Evaluation Board (ADM00578)
• Important Information Sheet
V
IN
V
DR
I
SP
P
GND
V
S
I
P
V
IN
PDRV
BIN
DIMI
DESAT_N
MCLR
CCD
MCP19114
I
COMP
I/O
Temp SNS
EN
2
SDRV
A
GND
V
DD
I
FB
4x
42
4L
DQ
F
N
V
DD
I/O
I/O
I/O
2
V
DD
5V
DESAT_P
I
SN
V
DD
V
DD
I/O
2