Buck Boost Converter : Output Waveforms (Part-2)
Working of Buck Boost Converter
1.During TON period: 0 ≤ t ≤ DT(TON )
When SW = ON ⇒ D = OFF⇒ Source is disconnected from load ⇒ Inductor starts storing energy ⇒ VL = VS
Capacitor is stored initially with lower plated positive w.r.t. upper plate and it discharges through load resistance R
2. During TOFF period: DT ≤ t ≤ T
When SW = OFF ⇒ D = ON⇒ Inductor starts discharging its energy ⇒ polarity of inductor voltage is reversed VL = - V0
Capacitor starts storing energy with lower plated positive w.r.t. upper plate
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