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MCP16322 EVALUATION
BOARD USER’S GUIDE
2011 Microchip Technology Inc. DS52030A-page 11
Chapter 2. Installation and Operation
2.1 INTRODUCTION
2.1.1 MCP16322 Features
The MCP16322 devices have been developed to provide high input voltage, high
current applications with a precisely regulated rail while operating at high efficiency.
The key features of the MCP16322 include:
• Up to 95% Typical Efficiency
• Input Voltage Range: 6.0V to 24V
• Output Voltage Range: .9V to 5V
• 1.5% Output Voltage Accuracy
• Integrated High-Side N-Channel Switch: 180 mΩ
• Integrated Low-Side N-Channel Switch: 120 mΩ
• 2A Output Current MCP16322
• 1 MHz Fixed Frequency
• Adjustable Output Voltage
• Low Device Shutdown Current
• Peak Current Mode Control
• Internal Compensation
• Stable with Ceramic Capacitors
• Internal Soft-Start
• Cycle by Cycle Peak Current Limit
• Under Voltage Lockout (UVLO): 5.75V (typical)
• Output Overvoltage Protection
• Overtemperature Protection
• Available Package: QFN-16
A high-performance peak-current mode control system is used to deliver a fast
response to sudden line and load changes.
2.1.2 MCP16322 Evaluation Board Features
The MCP16322 Evaluation Board is developed to demonstrate how the MCP16322
device operates as a Buck Topology over a wide input voltage and load range. Test
points are provided for input and output, allowing the MCP16322 Evaluation Board to
be connected directly to a system. Test vias are also included to give the user easy
access to the switch, power good, enable and injection nodes for easy evaluation of the
device. There are also ancillary vias provided for attaching extra input and output con-
nections. The 2A maximum continuous output current is available over the entire V
IN
range (6.0V to 24.0V), along with the entire adjustable output voltage range (0.9V to
5.0V).
A copper via, labeled P
good
, connected to the power good pin on the device can be
populated to monitor the power good output of the device. The power good pin is
externally pulled up to V
OUT
with a 10 kΩ resistor (R2).