Current detection circuit for bi-directional DC converter, has high and low side FETs, and current mirror circuit imposing collector current of one set of MOSFETs to collector current of other set based on reference potential

摘要

The circuit has a phase conductor with high side field effect transistors (FETs) (M1, M3, M5) and/or low side field effect transistors (FETs) (M2, M4, M6), and inductors (L1-L3). A current mirror circuit (Q3, Q4, Q8, R1, R2, R5, R6) imposes a collector current of one set of MOSFETs (Q2, Q7) to a collector current of other set of MOSFETs (Q1, Q6) relative to a reference potential.