MIC2128 Evaluation Board User’s Guide
DS50002533A-page 12 2016 Microchip Technology Inc.
1.3 MIC2128 EVALUATION BOARD FEATURES
The MIC2128 Evaluation Board:
• Features soft-start (SS) time selection pin which allows the user to adjust the
output soft-start time to reduce inrush current from mains during startup
• Features an auxiliary bootstrap low-dropout (LDO) which improves the system
efficiency by supplying the internal bias power from the output of the converter. A
logic level enable (EN) signal can be used to enable or disable the controller.
• Can start up monotonically into a pre-biased output
• Features an open drain power good signal (PG) which signals when the output is
in regulation
• Operates in discontinuous conduction mode during soft start at light loads
The basic parameters of the evaluation board are:
• Input: 7V to 75V (Optimized for 48V)
• Output: 5V at 5A
• 300 kHz Switching Frequency (adjustable 270 kHz to 800 kHz)
1.4 WHAT THE MIC2128 EVALUATION BOARD KIT CONTAINS
The MIC2128 Evaluation Board includes the following items:
• MIC2128 Evaluation Board (ADM00770)
• Important Information Sheet
