MCP1663 MINI-MODULE SEPIC
CONVERTER EVALUATION BOARD
USER’S GUIDE
2019 Microchip Technology Inc.
DS50002846A-page 10
Chapter 2. Installation and Operation
2.1
INTRODUCTION
MCP1663 is a non-synchronous, fixed-frequency step-up DC/DC converter that has
been developed for applications that require higher output voltage capabilities.
MCP1663 can regulate the output voltage up to 32V and can deliver 250 mA load at
3.3V input and 12V output. At light loads, MCP1663 skips pulses to keep the output
ripple low.
Another important feature is that the device integrates the compensation and protection
circuitry so that the final solution lowers the total system cost, eases the implementation
and requires a minimum number of additional components and a small board area.
The SEPIC topology is used to provide a positive regulated 3.3V output voltage from
an input voltage that varies from a minimum of 2.3V to a maximum of 5V. Refer to
for the maximum output current that can be obtained for different input volt-
ages.
The DDPAK footprint brings an advantage in terms of performance, as the design was
optimized for both high efficiency and maximum output current capabilities, while keep-
ing a small form factor of the module.
FIGURE 2-1:
MCP1663 SEPIC - 3.3V V
OUT
Maximum I
OUT
vs. V
IN
Using a
Power Supply.
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