Hello I was wondering if someone could do a sanity check on my design. The Circuit is supposed to pass 5VDC normally to a 1A load, with the TPS61087 operating in discontinuous mode with 4.5Vin and the charger charging (1) 1S 3.2V LiFePO4 cell unless the 5VDC power is lost in which case the booster should provide the 5Vout with 3.2Vin for 30 seconds. The inductor is 3.3uH Wurth 3.4 A, fout is 1.2Mhz, Iswpk = 2.12A, Ir = 215-340mA.
Your input is much appreciated, thanks. - Andrew