Find the value of Rsc, L and Co for a µA7840 switching regulator to provide +5 v at 3A, using the following specifications: toff= 24µs, ripple voltage = 400mA and ton=26µs.
A. Rsc = 55 mΩ , L = 25µH & Co = 750µF
B. Rsc = 550 mΩ , L = 25µH & Co = 75µF
C. Rsc = 650 mΩ , L = 25µH & Co = 65µF
D. Rsc = 720 mΩ , L = 25µH & Co = 250µF
Answer:A
Find the value of Rsc, L and Co for a µA7840 switching regulator to provide +5 v at 3A, using the following specifications: toff= 24µs, ripple voltage = 400mA and ton=26µs.
A. Rsc = 55 mΩ , L = 25µH & Co = 750µF B. Rsc = 550 mΩ , L = 25µH & Co = 75µF C. Rsc = 650 mΩ , L = 25µH & Co = 65µF D. Rsc = 720 mΩ , L = 25µH & Co = 250µF