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UC1825A: Max Duty Cycle

Steve Widener
Genius 9805 points
Part Number: UC1825A
Other Parts Discussed in Thread: UC1825, UC1823

Do we have a chart comparable to Figure 3 of the datasheet for the 50% duty-max devices?

If not, do we have a a formula we can use that properly combines any delays & discharge times to yield the maximum duty cycle for the UC1825A?

  • 0
    TI__Guru 50415 points

    Hi,

    UC1825A two outputs are alternately controlled, each output has up to close to 50% duty, two outputs together have similar close to 100% duty. So on the same setup, Fig 3 can be used for UC1823, and for UC1825, Fig 3 is for two outputs together, and each output is half of that.

    UC1823 two outputs are operating in phase so to achieve close to 100% duty.