TPS65235: Enable Pin when floating

Kelvin Tee

Genius 10035 points

Part Number: TPS65235

In non- I2C mode, what is happening when EN is floating?

When user's system in standby mode, the GPIO is not activated causes the EN pin floating.

Engineer observed the EN pin is in high state. Is it necessary to add a pull down resistor? Any recommended value?

Rgds
Kelvin

0 Zhao Ma over 4 years ago

Hi, Kelvin

EN pin has pull-up current, so EN pin is high when floating.

Suggest adding 1kohm to pull EN pin low.

0 Kelvin Tee over 4 years ago in reply to Zhao Ma

Hi Zhao

Thanks for the clarification.

Another question, does the Satellite tuner still operate (LNB is enabled) when TV in a standby mode ?

Rgds
Kelvin

0 Lucia Gao over 4 years ago in reply to Kelvin Tee

Hi Zhao,

Could you help support this?

BRs

Lucia

0 Zhao Ma over 4 years ago in reply to Kelvin Tee

Hi, Kelvin

As I know, the tuner is disabled when TV is in standby.

Still suggest you to confirm.

+1 Kelvin Tee over 4 years ago in reply to Zhao Ma

Hi Zhao

Thanks. I will advise customer to double confirm it.

Rgds
Kelvin

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