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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/814446/ucc2897a-how-to-increase-the-load-current-from-12v-2a-to-12v-5a-output-with-existing-design-schematic-review
e2e.ti.com/.../UCC2897_5F00_Schmatic-review-for--12V-with-5A-load.doc
Sreenivasa 您好、
如果此设计是针对12V 2A (24W)输出设计的、那么在不重新设计电路的情况下、您将无法获得4A (48W)输出。
您可以使用 UCC2897A 的 Excel 计算器帮助进行组件选择、也可以检查参考设计以查找合适的48W 参考电路。 例如、所连接的 PMP8861是具有18V 至72V 输入的12V/120W 有源钳位设计。
http://www.ti.com/lit/df/slurae0a/slurae0a.pdf
这是您满足要求的最佳选择。
此致
John
