HB1: Main Battery V1dc I1 C1 Q1 + - Q4 Q3 L1 v1 (t) + - Q2 i1 (t) 1:N2 L2′ + i2 (t) ′ Q8 v2 (t)′ - Q6 C2 Q5 HB2: 14 V Power System Q7 I2 + V2dc - Load L3′ Q9 i3 (t)′ 1:N3 Q12 v3 (t)′ + - Q10 HB3: ac Charger (a) i12 P12 i1 v1 P1 L31 L12 L23 i2′ v2′ P2 Q11 I3 C3 + - V3dc DR3 DR4 DR2 DR1 Vac i3′ (b) FIG 6 (a) Basic structure of the PS-TPC [11]. (b) The equivalent circuit model for PS-TPC [11]. v3′ P3 LS2 S11 P1 P3 Cdc P2 P4 Vp LS1 S12 S13 Vh S14 Chv Lo1 Lo2 Coh S21 LS3 Vl S22 (a) S24 S23 Clv Lo3 Lo4 Col Ilv + - Vol Ihv + - Voh (b) FIG 7 (a) Topology of the UTK/Hella converter for the integrated charger. (b) Prototype of the integrated OBC+DCDC. June 2022 z IEEE POWER ELECTRONICS MAGAZINE 19 i23 P23 i31 P31