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TPS55289: How to improve the load transient

Part Number: TPS55289
Other Parts Discussed in Thread: TPS55288

Hi, TPS55288 and TPS55289 support team

The below is the load transient of TPS55288 and TPS55289, which is captured from the datasheet. The load transient level of TPS55289 is a double of TPS55288. Are there a way to improve the load transient of TPS55289? The target is the same level as TPS55288.

Thanks

Tamio