TPS61170: TPS61170 Topology Question

Kuo John

Expert 1075 points

Part Number: TPS61170

Hi Team,

May I know TPS61170 can implement Isolated PSR topology?

over 7 years ago

0 Helen chen over 7 years ago

TI__Mastermind 40080 points

It can be used in the flyback applicaiton. Be sure the SW volatge is below the Vmax allowed in the datasheet. what is the maximum output power in this application? The peak switch current is only 1A.

0 Kuo John over 7 years ago in reply to Helen chen

Expert 1075 points

Hi Helen,

Thanks for your reply. the output current is 30V/15mA and -30V/15mA.

Regards,
John

0 Helen chen over 7 years ago in reply to Kuo John

TI__Mastermind 40080 points

It is OK. But since the seconday voltage is not regulated by the FB pin, you need to be carefully calculate the turns ratio, 1:5 is too big and will make the seconday output voltage higher than the target. did you add a voltage clamp circuit like linear regulator followed by the +-30V output?

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TPS61170: TPS61170 Topology Question