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TPS6594-Q1: Any limitation of duty cycle for this device?

Lijia Zhu
Expert 5625 points
Part Number: TPS6594-Q1

Hi Team,

What is the limitation of BUCK output duty cycle (Such as <80%)?

B&R

Lijia

  • +1
    TI__Mastermind 48691 points

    Hi Lijia,

      The device datasheet doesn't give the spec. According to our experience, it depends on the load conditions and requirements. Lower load regulation and Lower transient current can have wider duty-cycle. Basically, the duty-cycle is the key spec for buck converters output current capability.

     The device is designed for 3.3V or 5V as input and converts to low voltage (<2V) outputs with about 60% (when VCCA=3.3V) or about 40% (when VCCA=5V). In real applications, we should see system working well with duty-cycle from 10% to 90% for about 5A load current with normal requirement. 

    Thanks!

    Phil