A boost converter is a DC/DC converter that steps up voltage.
This post gathers useful design equations.
Assumptions:
-Synchronous converter (i.e. no diode switches), therefore always continuous conduction
-Small output voltage ripple
Category: Power Electronics
Buck Converter Equations
A buck converter is a DC/DC converter that steps down voltage.
This post gathers useful design equations.
Assumptions:
-Synchronous converter (i.e. no diode switches), therefore always continuous conduction
-Small output voltage ripple
Efficiency
Efficiency is the ratio of output power to input power in a power converter or other device, with the difference being power loss.
The ratio can be expressed as a percentage, decimal or fraction.
Usually we know the output power and efficiency and need to figure out the total input power and loss.
For example, a circuit design may require 2W of regulated power and our options include a DC-DC converter which is 90% efficient.
Efficiency is always less than 1.00 or 100%.
Voltage Regulators
A voltage regulator is a device or circuit that maintains a constant output voltage. It’s typical job is to convert from one voltage to another. Other common usages are to stabilize a variable supply, such as a battery which discharges over time, or to provide a noise-free supply to a sensitive subcircuit.
Voltage regulators are a good study of an electronic system because they have many identifiable and relatively simple functional blocks.