Fig. 1 shows an buck converter with its equivalent load. The MOSFET (Q) is controlled using a signal having 50% duty ratio and 500 kHz switching frequency. Vo ip 100 A 48 V Vp D Figure 1: Buck Converter. 1. Sketch the vp, ip, vo and ig for one switching cycle. 2. What should be the minimum voltage rating of Q and D. 3. Find the average value of ip and RMS value of iq. Derivation is not expected.

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Fig. 1 shows an buck converter with its equivalent load. The MOSFET (Q) is controlled using a signal
having 50% duty ratio and 500 kHz switching frequency.
Vo
+
ip
100 A
48 V
VD
DI +
Figure 1: Buck Converter.
1. Sketch the vp, ip, vQ and iq for one switching cycle.
2. What should be the minimum voltage rating of Q and D.
3. Find the average value ofip and RMS value of ig. Derivation is not expected.
Transcribed Image Text:Fig. 1 shows an buck converter with its equivalent load. The MOSFET (Q) is controlled using a signal having 50% duty ratio and 500 kHz switching frequency. Vo + ip 100 A 48 V VD DI + Figure 1: Buck Converter. 1. Sketch the vp, ip, vQ and iq for one switching cycle. 2. What should be the minimum voltage rating of Q and D. 3. Find the average value ofip and RMS value of ig. Derivation is not expected.
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