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Original question:

UCC27210, output

UCC27210: Testing with Function generator or micro-controller

kehinde ode
Prodigy 50 points
Part Number: UCC27210

Hello,

i would like to know if the gate driver can be operated with the use of a function generator to check rise and fall time, as i have attempted to no avail. or can it only be operated by micro-controller ?

  • 0
    TI__Guru**** 189399 points

    Hi, Kehinde,

    This device is hardware-controlled, so you do not need an MCU to control it.

    You need to configure the device for the desired operation, and then place a PWM signal on the input, and then you can measure the rise and fall times on the output PWM signal.

    Keep in mind that rise and fall times are load-dependent.

  • 0
    TI__Expert 4070 points

    Kehinde,

    Thanks for reaching out to E2E!

    Yes, you are able to operate the driver with a function generator.  Please ensure that the function generator voltage is switching comfortably through the on and off threshold voltages (Table 7.5 from the datasheet).

    You may also want to configure your function generator in the "High-Z" output setting.

    If this answered your question, please click the green button; otherwise, feel free to follow up!

    Thanks,

    Aaron Grgurich

  • 0 in reply to Don Dapkus
    Prodigy 50 points

    hello thanks for the reply what do you mean by configure. I am just following the layout from the data sheet.

  • 0 in reply to Aaron Grgurich
    Prodigy 50 points

    Hello, Thank you for the response, I did as you said in the lab today but still no progress 

      fig. 1

    is the Hi and Li input signals from the function generator.

      fig 2.his is the output of the Ho and Lo from the gate driver.

    following the schematic above  

  • 0 in reply to kehinde ode
    TI__Guru**** 189399 points

    Hi, Kehinde,

    In addition to what Aaron posted, verify, at the pins of the IC itself, that you have voltage from VDD to VSS that is within spec of the gate driver (see Recommended Operating Conditions).

    Focus on the LO first. The HO is complicated by the bootstrap capacitor. For more details, please see section 5.2.2 Bootstrap Gate-Drive Technique in this app note.

    Good luck with your project!

  • 0 in reply to Don Dapkus
    Prodigy 50 points

    Hello, 

    thanks for the advice just tested it the lab it working thanks.