====== General ======

The energy stored in a capacitor is described by $ E=\frac{LI^2}{2} $

A MOSFET can be used instead of the rectifier diode, a so called synchronous rectifier, to improve efficiency.

Skip Mode is a feature that improves efficiency at light loads. But it generates more noise that is difficult to filter.

[[https://www.maximintegrated.com/en/design/technical-documents/tutorials/2/2031.html|Maxims DC-DC guide]]

[[https://www.ti.com/lit/an/snva736/snva736.pdf?ts=1604241352001|TI Know Your Limits]] -- Current limits and short circuit behaviour

[[https://www.powerelectronics.com/content/article/21861300/guide-to-selecting-inductors-for-switching-regulators|Guide to selecting inductors]]

Considerations
| Property | Pro | Con |
| High switch frequency | Smaller footprint | Lower efficiency |
| Higher inductance | Lower ripple | Bigger footprint|
| Lower inductor resistance | Higher efficiency | Bigger footprint |


====== Step-up, boost ======
[[https://en.wikipedia.org/wiki/Boost_converter|Wikipedia]]


====== Step-down, buck ======
[[https://en.wikipedia.org/wiki/Buck_converter|Wikipedia]]


====== Step-down/up, buck-boost ======
[[https://en.wikipedia.org/wiki/Buck%E2%80%93boost_converter|Wikipedia]]


====== Step-down/up, Cuk ======
[[https://en.wikipedia.org/wiki/%C4%86uk_converter|Wikipedia]]

====== Negative input switching regulator ======
[[https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/The-Parallel-Universe-of-Negative-Input-Voltages.pdf|The Parallel Universe of Negative Input Voltages]]

[[https://www.analog.com/en/resources/technical-articles/positive-buck-regulator-makes-negative-boost-dcdc-converter.html|Positive Buck Regulator Makes Negative Boost DC/DC Converter]]

[[https://www.ti.com/lit/an/slyt516/slyt516.pdf?ts=1717195408219&ref_url=https%253A%252F%252Fwww.google.com%252F|Designing a negative boost converter from a standard positive buck converter]]