Power Supply Regulators Unit 7 – DC to DC Converter
UNIT 7 – DC TO DC CONVERTER
UNIT OBJECTIVE
When you have completed this unit, you will be able to demonstrate the operation of an IC
switching regulator configured as a dc to dc converter.
UNIT FUNDAMENTALS
A dc to dc converter transforms a dc input voltage from one level to a different level.
The output voltage may be higher or lower than the input voltage, and the output polarity may be
the same as or opposite to that of the input.
In general, dc to dc converter circuits control a transistor switch (Q1) that is used to charge an
inductor (L1) with energy.
When transistor switch Q1 is turned on, energy is stored in the inductor, CR1 is reverse biased
(off), and C1 supplies (discharges) energy to the load.