Other Parts Discussed in Thread: UCC28950
有个案子:400V—25V(80A),2KW,用UCC256402,外加驱动芯片,能胜任吗?
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因对重量要求较高,移相全桥输出电感比较重。初步计算半桥LLC初级谐振电流13A,会不会在上管关闭后的死区时间内,谐振电流从下管体二极管流过,造成HS节点电压比GND负太多而损坏UCC256402呢?
Hi
LLC一般推荐设计1000W内的设计,最多略超,所以建议用全桥移相。