Give all your answers correct to 4 d.p. A passive R-L load is supplied from a step-down DC-DC converter (chopper) from a

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Give All Your Answers Correct To 4 D P A Passive R L Load Is Supplied From A Step Down Dc Dc Converter Chopper From A 1 (41.3 KiB) Viewed 34 times

Give all your answers correct to 4 d.p. A passive R-L load is supplied from a step-down DC-DC converter (chopper) from a LiPo battery of 14 V. The chopper operates with switching frequency of 9 kHz. The load resistance and inductance are 10 Q and 90 mH, respectively, so that the converter operates in the continuous conduction mode The switching components can be considered as ideal a) Determine the required duty cycle and chopper on-time if the chopper output average voltage is 9V [5 marks] di = Number tont = Number jus b) Calculate the average load current and the power delivered to the load for the case considered in part a) [5 marks) 1 = Number A P = Number w c) After certain time the battery has discharged and the battery voltage dropped to 12 1V Calculate the new values of duty cycle and chopper on-time needed to maintain the same voltage on the output. [5 marks) d2 = ton2 = Number jis Number d) How much power is now taken from the battery? [5 marks] P = Num w