DC-DC converters convert an uncontrolled supply to a constant load efficiently. This post summarizes DC-DC converters and their multiple kinds. DC-DC converters convert high-frequency electricity into regulated DC voltages using inductors, transformers, and capacitors to balance voltage fluctuations. Closed feedback loops preserve output voltage even when input and output currents change. They are 90% accurate and shorter than linear regulators. But, they have noise and intricacy. DC-DC converters are available in two configurations: non-isolated and isolated. The degree of isolation is defined by the connection of the input ground to the output ground.
The
buck, boost, buck-boost, and SEPIC converters are four popular topologies: Buck
converter steps down the input voltage to produce a lower
output voltage. A buck converter can charge a lithium-ion battery from a 5 V
USB supply to 4.2 V.
Boost
converter: It steps up a voltage such as a 5v
to 12v dc-dc converter. A boost converter may power a
string of LEDs or generate a 5 V USB output from a lithium cell.
Buck-boost
converter steps a voltage up or down to match the input
voltage. A buck-boost could convert a 12 V battery to 12 V. A 12V battery's
voltage ranges from 10 to 14.7 V. It could also power an LED with one cell. The
LED forward drop 3 V. ranges from 2.5 to 4.2 V. Positive and negative buck boosts
also exist.
SEPIC
converter also steps a voltage up or down to match the input
voltage. A SEPIC is similar to a buck-boost but has several advantages for some
applications. If you’re seeking High
Voltage DC-DC Converters for your application,
visit HVM Technology, Inc.