Literature Survey` about Developing DC-DC converter with Feed forward control Essay Example

A. However, multiple Bucks are used in parallel to minimize the constraint on output filter capacitance at higher currents. The center leg of the core experiences lower flux current due to the inclusion of interleaved Buck inductors.

Boost converters (Step-up converter)

Boost converters are employed to provide higher output voltages than the lower input voltages they receive. They feature a storage element, switches (such as a diode and transistor), and utilize semi-conductor switches. To amplify the output voltage, a filter composed of an inductor and capacitor is implemented. Buck boost converters, as their name suggests, possess a dual functionality, combining two distinct topologies. The output voltage of buck boost converters can be either higher or lower than the input voltage.

The inverting topology and the buck boost converter are both used as topologies. The inverting topology always results in an output voltage that is opposite to the input voltage. On the other hand, the buck boost converter combines a buck converter with a boost converter, allowing for an output voltage that can be higher or lower than the input voltage while maintaining the same polarity.

Having knowledge about digitally controlled dc-dc converters is advantageous for working effectively with a feedforward PWM controller and power switch. These converters provide additional benefits such as digital control of the system and increased flexibility and automation compared to electronic systems.

The Digital DC converter is more advantageous than traditional DC converters because it digitally processes all signals to effectively regulate the voltage of electronic devices. The power switch of the DC DC converter controls the load of the devices, resulting in a change in output

voltage. To manage this, pulse width modulation (PWM) is employed for regulating the output voltage and handling input from the power switch connected to the DC DC converter. PWM functions by utilizing ON and OFF signals. The low pass filter linked with the output switch produces a voltage that corresponds to the ON and OFF states of the PWM.

The excess voltage is returned to the PWM controller, which adjusts and controls the output voltage by regulating the ON times the voltage is returned. Simulation software programs such as P-Spice and Orcad can be employed for effective utilization of the DC-DC converter. These software programs support various converter types, including buck, boost, and buck-boost. They can be used online to perform calculations for the converter and display voltage regulation. Furthermore, these software programs are easily downloadable and compatible with Windows 98, XP, NT4, etc.