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TPS54719: 0.2A to 6A, good load transient and small size DC/DC solution.

Part Number: TPS54719
Other Parts Discussed in Thread: TPS56637, TPS568215, TPS568230, TLV62585

Dear Sir/Ms.

We Promoted TPS54719 to customer but in webanch Load transient simulation, the voltage drop is too low (0.2V). customer's specification is 50mV, so customers will not consider this one.

Currently customer's first choice is Richtek RT5789A.
The datasheet of the  RT5789B is below for you reference.
www.richtek.com/.../DS5789AB-01.pdf

customer's system requirement

1.
Vin 5V
Vout 0.9V
Iout 0.2~6A

2.
Vin 5V
Vout 1.8V
Iout 0.2~6A

3.
Vin 5V
Vout 1.2V
Iout 0.2~6A

IC Size (less than 3mmx 3mm x 2mm), switching frequency is best 1.5Mhz (>1Mhz)

Is there a more suitable solution? Is TPS56637 suitable?
www.ti.com/.../tps56637.pdf

Also look for RT5797 P2P DC/DC

Best Regards,

Kami Huang