最近想设计一个DCDC反激式变压器开关电源,但不知如何选型控制芯片,求助TI工程师。
参数如下:
输入(DC)36~75V
输出(DC):1、+15V / 1A;
2、+24V / 1A(接反馈);
3、+24V / 1A;
4、+15V/300mA(辅助绕组)
功率:90W
频率:500KHz
最大占空比:80%左右
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你好,
这么大的功率倒不如用有缘钳位正激,如UCC2897A
你好,
电压型的话调整率应该还好,低频增益尽量做高就好了,如果是交叉调整率另说