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Overview of the switching regulator family and discuss the topologies of switching regulator.

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- 1. Switching Regulator Fundamentals <ul><li>Source: National Semiconductor </li></ul>
- 2. Introduction <ul><li>Purpose </li></ul><ul><ul><li>This module provides information about the switching regulator. </li></ul></ul><ul><li>Outline </li></ul><ul><ul><li>Provide an overview of switching regulator. </li></ul></ul><ul><ul><li>Discuss the topologies of switching regulator. </li></ul></ul><ul><li>Contents </li></ul><ul><ul><li>10 pages </li></ul></ul><ul><li>Duration </li></ul><ul><ul><li>5 Minutes </li></ul></ul>
- 3. Switching Regulators <ul><li>Pulse Width Modulation </li></ul><ul><li>DC-DC Converters </li></ul><ul><li>Inductive Switching </li></ul>
- 4. Pulse Width Modulation <ul><li>One way to control average power to a load is to control the average voltage to it. </li></ul>
- 5. DC-DC Converters – Buck <ul><li>For DC-DC converters, an inductor is used to average the switched voltage. </li></ul><ul><ul><li>A buck converter has the inductor connected to the output terminal. </li></ul></ul>
- 6. DC-DC Converters – Boost <ul><li>For DC-DC converters, an inductor is used to average the switched voltage. </li></ul><ul><ul><li>A boost converter has the inductor connected to the input terminal. </li></ul></ul>
- 7. DC-DC Converters – Buck-Boost <ul><li>For DC-DC converters, an inductor is used to average the switched voltage. </li></ul><ul><ul><li>A buck-boost converter has the inductor connected to the ground terminal. </li></ul></ul>
- 8. Inductive Switching DC State AC State
- 9. Buck Topologies <ul><li>To analyze the ideal buck converter, equate the voltage across the inductor when Sw1 is on, to the voltage when Sw2 is on: </li></ul>
- 10. Boost Topologies <ul><li>To analyze the ideal boost converter, equate the voltage across the inductor when Sw1 is on, to the voltage when Sw2 is on: </li></ul>
- 11. Buck-Boost (Inverting) Topologies <ul><li>To analyze the ideal buck-boost converter, equate the voltage across the inductor when Sw1 is on, to the voltage when Sw2 is on: </li></ul>
- 12. Additional Resource <ul><li>For ordering the related products, please call our sales hotline </li></ul><ul><li>For additional inquires contact our technical service hotline </li></ul><ul><li>For more product information go to </li></ul><ul><li>http://www.national.com/analog/power/simple_switcher </li></ul>

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