Answer Happy

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 12 V. The chopper operates with switching frequency of 6 kHz. The load resistance and inductance are 15 and 50 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 7 V. [5 marks) d = Number tont = Number us b) Calculate the average load current and the power delivered to the load for the case considered in part a). [5 marks] | = Number A P= Number W c) After certain time the battery has discharged, and the battery voltage dropped to 9.8 V. Calculate the new values of duty cycle and chopper on-time needed to maintain the same voltage on the output. (5 marks]
operates in the coniunuous 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 7 V. [5 marks) di = Number tont = Number us b) Calculate the average load current and the power delivered to the load for the case considered in part a). [5 marks) | = Number A P= Number W C) After certain time the battery has discharged, and the battery voltage dropped to 9.8 V. Calculate the new values of duty cycle and chopper on-time needed to maintain the same voltage on the output. [5 marks] d2 = Number ton2 = Number us d) How much power is now taken from the battery? [5 marks) P= Number W