| 摘要 |
A system and method for reducing negative inductor current during soft start of a bidirectional direct current (DC) - to-DC converter is provided. Typically, the bidirectional DC- to-DC converter includes an active switch and a passive switch. The system employs a soft start circuit that controls the duty cycle of the passive switch during soft start of the active switch. In one aspect, the soft start circuit gradually increases the duty cycle of the passive switch from zero to a steady state value, and provides a soft start for the passive switch concurrently/simultaneously during the soft start of the active switch. Moreover, the soft start circuit disclosed herein can avoid the reverse transient inductor current during start-up, prevent system damage and make the design of the bidirectional DC- to-DC converter more robust.
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