UC2825A-EP: About temperature drift of fixed duty

Takashi Kumagai

Prodigy 10 points

Part Number: UC2825A-EP

We would like to use the UC2825A-EP to control a non-regulated output bus converter.

What percentage is the temperature drift when used with a fixed Duty (about 45%)?

over 2 years ago

0 Teng Feng over 2 years ago

TI__Genius 13660 points

Hello, I am OOO today, I will reply you tomorrow. Thanks.

0 Teng Feng over 2 years ago

TI__Genius 13660 points

Hello, it is around 10%, caused by the range of the Oscillator discharging current. Thanks.

0 Takashi Kumagai over 2 years ago in reply to Teng Feng

Prodigy 10 points

Thank you for your answer.

Is the duty accuracy 10% when the operating temperature is between -55 degrees and 85 degrees?

0 Teng Feng over 2 years ago in reply to Takashi Kumagai

TI__Genius 13660 points

0 Takashi Kumagai over 2 years ago in reply to Teng Feng

Prodigy 10 points

I understood the UC2825AQDWREP's duty accuracy is less than 10%(+/-5%) when the operating temperature is between -55 degrees and 125 degrees.
Is it OK?

+1 Teng Feng over 2 years ago in reply to Takashi Kumagai

TI__Genius 13660 points

It is -40C to 125C for UC2825AQDWREP, and -55C to 125C for UC2825AMDWREP.

0 Takashi Kumagai over 2 years ago in reply to Teng Feng

Prodigy 10 points

Thanks!

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UC2825A-EP: About temperature drift of fixed duty