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MICRELAN44ATYPEIISTABILITYPROG
| Title |
Title
Type II Stability Program for the MIC2168/69
|
|---|---|
| Name |
Name
MICRELAN44ATYPEIISTABILITYPROG
|
| Date |
Date
08/17/2018
|
| Description |
Description
The MIC2169 is a high efficiency, simple to use synchronous buck controller IC, housed in a 10-pin MSOP package. The MIC2169 switches at 500kHz and features a high output driver capability for an all N-Channel synchronous architecture. The MIC2169 operates from a 3V to 13.2V input and can be configured to generate output voltages as low as 0.8V. Thus, the MIC2169 is a voltage mode converter with an internal transconductance error amplifier. This application note addresses stability analysis for the MIC2169 voltage mode controller based on Dean Venable?s K1-factor method. The following analysis is based on a Type II error amplifier scheme that calculates the compensation resistor and capacitors for the MIC2169 controller, see Figure 1. Type II error amplifier compensation scheme relies on the output capacitor ESR to produce a Zero in the power path (input to output) transfer function.
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