MCP19111 PMBus™
PROTOCOL-ENABLED POL
CONVERTER REFERENCE DESIGN
USER’S GUIDE
2015 Microchip Technology Inc.
DS50002379A-page 17
Chapter 2. Installation and Operation
2.1
BOARD FEATURES
The MCP19111 PMBus™ Protocol-Enabled Point-of-Load Converter Reference
Design was developed to provide a compact, low-cost and highly efficient step-down
conversion for low-to-medium output currents.
The key features of this board include:
• Input Voltage Range: 8V to 14V
• Output Voltage: 1.2V (can be adjusted by software from 0.1 to 3.6V)
• Maximum Output Current: 20A
• 88% Typical Efficiency at 1.2V/15A output and 12V input
• 500 kHz Switching Frequency (can be software adjusted from 100 kHz to
1.6 MHz)
• On-Board High-Performance Power MOSFET Transistors
• Overcurrent and Overtemperature Protection
• Status Report (including errors, input voltage, output voltage and current) via the
PMBus Communication Protocol
• Precision Op Amp for Accurate Output Current Measurement
• Inductor Temperature Sensor
• Calibration of Output Voltage
• Calibration of Output Voltage and Output Current Measurements (via PMBus)
• Undervoltage Lockout (UVLO) with Programmable (via software) Thresholds
• Output Overvoltage, Undervoltage and Overcurrent Lockout, Programmable via
Software
• For Advanced Users (use with caution): Control Loop Parameters and MOSFET’s
Switching Dead Time can also be Adjusted by Software.