Patent ID: 8461815

Claim:
A buck converter, comprising: a. a first switching circuit including a first upper power transistor coupled to a first lower power transistor at a first junction; b. a second switching circuit including a second upper power transistor coupled to a second lower power transistor at a second junction, wherein the second upper power transistor has an on time T determined by K 1 *Ic+K 2 *ILOAD+K 3 *(Vin−Vout)+K 4 *Rds 2 +K 5 *Rds 4 +K 6 *IL, where Ic is the output capacitor current; IL is the inductor current; K 1 ,K 2 ,K 3 ,K 4 ,K 5 ,K 6 are the gain factors; ILOAD is the load current; Rds 2 is the total resistance from switching node to Vin and Rds 4 is the total resistance from the switching node to ground; c. an inductor coupled to the first and second junctions; and d. a load coupled to the second junction.