TPS54335A: what is this part duty?

Jimmy Huang22

Expert 1470 points

Part Number: TPS54335A

Hi ti team,

Could you pls help us that what is tps54335a duty cycle?

When I used input 6.5v, set output is 5v,the output is abnormal. if input set to 8v,the output 5v normal.

thank!

0 Shawn Nie over 4 years ago

Hi,

The min VIN is related to the load current, what is the load current? Please share the schematic.

And please check the VIN UVLO, whether it is higher than 6.5V.

Shawn

0 Jimmy Huang22 over 4 years ago in reply to Shawn Nie

Expert 1470 points

Shawn,

The current about 700mA to 1A for LED screen,the sch as below, Vin uvlo no set,EN pin have give 3.3V.

0 Jimmy Huang22 over 4 years ago in reply to Jimmy Huang22

Expert 1470 points

Shawn,

Could you pls give us advise?

If output set to 5V,what's the vin min Voltage need?thanks!

0 Shawn Nie over 4 years ago in reply to Jimmy Huang22

Hi,

I checked on the EVM, the min VIN is about 5.3V for 5V/1A.

Shawn

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