The concept of switching power supplies is important for a variety of electronic configurations.
Switching power supply sources
require two types of design in a given product. They’re characterized by a
configuration that requires DC-to-DC, DC-to-AC, or AC-to-DC frequency
conversions.
Unlike linear power supplies that
typically require diodes, SMPSs utilize precise switching to control duty cycle
operation. Transistors allow for a better amount of control.
In general, high voltage switching
power supply is primarily used in digital systems such as the
following: telecommunication devices, computers, audio equipment, mobile phone
charges, medical equipment and other electronic technologies.
Power supplies are converters.
Typically, they convert one parameter (or more) from supplied power to the
type/level required by the load or circuit. A power supply adapter allows for
the utilization of a supply that was initially incompatible.
High-voltage low-current power
supply designs
may consist of conversion circuitry or an adapter.
The most common design types for
switching power supplies are:
●
Buck
●
Boost
●
Buck-boost
●
Forward
●
Flyback
●
Push-pull
●
Half bridge
●
Full bridge
Exact control of the switching
action is an important design requirement, especially for switching power
supplies. It’s important to realize that this switching, however, creates high
frequencies and noise. For PCBAs, lower RF frequencies are not a big problem.
On the other hand, high-speed
designs require special considerations (trace lengths, terminations, board
impedance, and material type).
For more details, visit www.hvmtech.com.