Designing A PCB For A Boost Converter - Miracle Electronics

1
Boost converters, or better known as step-up
converters, are the simplest types of DC-to-DC
switch mode power converters, used to step up a
voltage from the supply to the load. It consists
of a diode, a transistor, and a
capacitor/inductor. But, the effective working
of a boost converter is significantly decided on
the kind of PCB used. The way the PCB is
designed highly determines how a boost converter
performs its function. So, how can we make a good
PCB design for such a device?
Creating a good design three basic steps One of
the easiest methods is to copy the boost
converters configuration from its figure or
testing panel. But, the design may or may not be
compatible with the system board, which is why a
certain number of steps are to be
performed. First, the output capacitor should be
placed and routed in the correct location. The
outer transistor should be located near the
integrated circuit, linked with a short and
large trace to reduce excessive current, because
the current flow through the outer transistor is
of the pulse type. Second, the inductors copper
in the node should be designed in such a way that
the high current is managed to take up the least
amount of space. It is very important to keep
every signal of a sensitive node at a safe
distance.
2
Finally, the input capacitor, which is
responsible for controlling the inner circuit
and under-current circuit, should be designed
such that its ground node and the integrated
circuits control ground pin are kept nearby. The
power ground of the boost converter is made up
of the input transistors ground node, outer
resistors ground node, and the integrated
circuits ground pin. With the input capacitors
current remaining constant, the distance between
the inductor and input capacitors node is
insignificant. Also note, The digital and logic
modules are used in small-signal parts. For
instance, the resistors and capacitors for the
pin are small-signal analog elements for the
boost converter. The pins may have a high input
impedance, which makes noise particularly
sensitive to the power devices and routers. If
the trace is route too close to the node, the
noise can cause problems by coupling to the pins.
Thus, the modules ground node and the
integrated circuits pin should be joined to the
integrated circuits power ground with a point.
There isnt any high voltage current flowing vis
this signal ground, but the noise coupling into
the control circuit may result in poor output
voltage management, or any other issue. With all
these basics and fundamental ideas, the best PCB
can be designed for a boost converter. Miracle
Electronics can help you with excellent services
related to all types of PCBs for all kinds of
applications. You could choose from standard
off-the-shelf PCBs, or have special customized
PCB assembly manufacturing from India done here,
no matter what the size of your project large,
medium, or low. And, rest assured that whatever
you choose, youll always get only high quality
optimal results and cost-effective products at
Miracle Electronics.