TPS54335A: Pulse - skip

Shunsuke Nagata

Genius 12240 points

Part Number: TPS54335A
Other Parts Discussed in Thread: TPS54060

Hi,

I would like to know about pulse - skip of TPS54335A.

Could you please check attached file which have questions and currently informationTPS54335ADDAR_190919.xlsx?

Regards,
Nagata.

over 4 years ago

0 Shawn Nie over 4 years ago

TI__Genius 10070 points

Hi,

1. The switching frequency in pulse skip mode is related to the load current. The switching frequency decreases with the decreasing of load current.

2. The min load current is related to VIN, VOUT, IOUT, L and switching frequency of CCM, you can check it based on your application.

3. The pulse skip mode can't be disabled, why do you want to disable it?

Shawn

0 Shunsuke Nagata over 4 years ago in reply to Shawn Nie

TI__Genius 12240 points

Hi, Shawn,

Thank you for your supports.

For #2, I would like to know the current threshold to enter Skip - mode. For example, TPS54060 datasheet shows as below.

Could you please let me know the TPS54335A threshold? is it 500mA?

Regards,

Nagata.

0 Shawn Nie over 4 years ago in reply to Shunsuke Nagata

TI__Genius 10070 points

Hi Nagata,

It is not accurate to for 500mA. The Eco-mode is related to many parameters, 500mA is the rough current for some typical application. I can't give you the accurate value.you'd better check it on the bench for your application.

You can refer to below application note to understand Eco-mode.

http://www.ti.com/lit/an/slva388/slva388.pdf

Shawn

Power management

Power management forum

TPS54335A: Pulse - skip