TPS65296: Using TPS65296 with only one VDD

Zhanpeng Li

Part Number: TPS65296

Hi,

TPS65296 has two VDD: VDD1 and VDD2, since my customer only request VDD2 for power supply. we would like to know how to deal with VDD1?

1)CAN we float PIN-SW_VDD1?

2)Can we connect PIN-VDD1SNS to 1.8v since we prefer to use PGOOD to montior VDD2;

3)Or can we connect PIN-VDD1SNS and PIN-VDD2SNS?

over 5 years ago

0 Yuchang Zhang over 5 years ago

TI__Mastermind 18510 points

VDD1-SW1 could be floating, but must add 1.8V or slightly higher than 1.8V to VDD1-sense and power on it first to prevent UV happen. Because one of VDD1 and VDD2 gets into error, both will shutdown.

Yuchang

Power management

Power management forum

TPS65296: Using TPS65296 with only one VDD