TPS61088 Max duty

PAN-M

Mastermind 8375 points

Other Parts Discussed in Thread: TPS61088

How much is the maximum duty of TPS61088?

Regards,
PAN-M

over 9 years ago

0 Helen chen over 9 years ago

TI__Mastermind 40080 points

Hi Pan,

As the minimum input voltage of TPS61088 is 2.7V, maximum outputt voltage is 12.6V, so the maximum duty cycle is not a problem for this part.

Why the customer care this parameter, could you please tell the histroy to me?

BR, Helen

0 PAN-M over 9 years ago in reply to Helen chen

Mastermind 8375 points

Hi Helen

When output voltage is set by 10V, if input voltage is 10V, how much the output voltage?

Regards,
PAN-M

0 Helen chen over 9 years ago in reply to PAN-M

TI__Mastermind 40080 points

Pan,

For the boost converter, when input voltage is very close (or equal) to the output voltage, whether the output voltage can be regulated at the target value or not is depend on the minimum-duty cycle.

When the mode pin is open and let the TPS61088 work in the PFM mode, then Vo=10V. But if TPS61088 is work in the PWM mode(mode pin short to GND), because of the limitation of the minimum on time, the output voltage will be higher than the target value(10V).

BR,

Helen

0 PAN-M over 9 years ago in reply to Helen chen

Mastermind 8375 points

Thank you.
(Input voltage + minimum duty = 10V + xxV)

0 Helen chen over 9 years ago in reply to PAN-M

TI__Mastermind 40080 points

Hi, Pan,

You're welcome.

Could you please share the detailed application information with us? Like in what kind of equipment? Volume?You can send the information to me by email, my email address is helen-chen@ti.com

These answers are important for us.

BR,

Helen

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TPS61088 Max duty