MCP16311/2 Design Analyzer Design Example
Last modified by Microchip on 2023/11/10 11:17
Here, we present a design example using the MCP16311/2 Design Analyzer with the following input parameters:
Input Parameters
| System Parameter | Designator | Suggested Values | Units | Notes |
|---|---|---|---|---|
| Input Voltage | E | 24 | V | 4.0 V ≤ E ≤ 30.0 V |
| Output Voltage | U | 2 | V | 2.0 V ≤ U ≤ 24.0 V |
| Output Current | IO | 800 | mA | 0 mA ≤ IO ≤ 1,000 mA |
| Ambient Temperature | TA | 25 | °C | -40°C ≤ TA ≤ 125 °C |
| Package Type | Pkg | MSOP |
Based on these input parameters, the Design Analyzer calculates the recommended values of the external components for both the power train and the feedback loop. At this point, you can fine-tune the component values to get more precise results.
System and Compensation Components
| Designator | Suggested Values | Adjusted Values | Units | |
|---|---|---|---|---|
| System Components | ||||
| Inductance | L | 10 | 10 | µH |
| Inductance DCR | LDCR | 100 | 80 | mΩ |
| Output Capacitor | COUT | 20 | 22 | µF |
| Output Capacitor ESR | CESR | 5 | 10 | mΩ |
| Compensation Components | ||||
| Top Feedback Resistor | RTOP | 15.0 | 15.0 | kΩ |
| Bottom Feedback Resistor | RBOT | 10.0 | 10.0 | kΩ |
| External Zero Capacitor | CZ | 0 | 33 | pF |
Stability Analysis Summary
| Crossover Frequency | 48,000 | 40,000 | Hz |
| Phase Margin | 42.2 | 52.1 | Degrees |
| Gain Margin | 16.9 | 17.7 | dB |
| On-Chip Temperature | 105 | °C |
In the blue cells, the stability analysis summary (for both the suggested value and the adjustable value) is displayed.
Learn More
- Synchronous Buck Converter Overview
- Buck Converter Design Analyzer Introduction
- Using the MCP16311/2 Synchronous Buck Converter Design Analyzer
- MCP16311/2 Overview
- MCP16311/2 Datasheet
- MCP16311 Analog Simulation Download
- MCP16311/2 Synchronous Buck Converter Evaluation Board (Part Number: ADM00467)
