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UCC28180: UCC28180 Replacement

Yuting Li
Intellectual 1420 points
Part Number: UCC28180
Other Parts Discussed in Thread: UCC28019A

Hi team,

Do we have any PFC controller could directly replace UCC28180? if not, is there any similar recommendation? Thanks.

  • 0
    TI__Genius 9790 points

    Hi, Yuting

    there is no pin-pin replacement for UCC28180. the similar solution is UCC28019A.

    Yunsheng

  • 0 in reply to Yunsheng Qu
    TI__Intellectual 1420 points

    Hi Yunsheng,

    Thanks for your reply. Could you share the comparison table between these two devices?

  • 0 in reply to Yuting Li
    TI__Genius 9790 points

    UCC28180

    UCC28019A

    Freq Range

    18kHz to 250kHz, Programmable

     65kHz, Fixed

    VCC ON (UVLO)

    12.1V Max / 10.8V Min

    11V Max / 9V Min

    VCC OF (UVLO)

    9.1V Min

    9V Min

    UVLO Hysteresis

    1.7V Typ

    1V Typ

    VCC ABS MAX

    22V

    22V

    Frequency Tolerance over Temperature

    +/-10% in Fsw  range 18kHz to 180kHz

    -12.3% to 9% at 65kHz only

    VREF Tol over Temp.

    -2.6% +3%

    +/- 2%

    Peak Current Limit

    -0.4V Typ, over 50% reduction in RSHUNT vs. UCC28019A

    -1.08V Typ

    Soft Overcurrent Limit

    -0.285V, Improved performance

    -0.73V

    Current Loop Control Circuits

    Trimmed for Low Offset effects on iTHD

    Untrimmed

    Enhanced Dynamic Response (EDR)

    Undervoltage, 5X Gain at 95% VREF

    Overvoltage, 5X Gain at 105% VREF

    Undervoltage Only,

    10X Gain at 95% VREF

    OVP Protection

    (% of VREF)

    Multi-Level protection leading to cycle-by-cycle OVP:

    - At 105%, 5X Gain to respond faster to voltage loop

    - At 107%, VCOMP pin discharges via internal 4kohm

    - At 109%, Gate Output shut-off

    105% VREF, Gate Output shut-off

    OVP recovery threshold after Gate Shut-Off (% of VREF)

    102%

    None

    Audible Noise  during burst  mode

    - No audible noise during burst mode

    - Eliminates ICOMP pull-up resistors

    -

     -need ICOMP pull-up resistor to solve burst mode audible noise issue

    Gate Drive (SRC/SNK)

     1.5A/2A

    1.5A/2A

    Gate Voltage Clamp

    15.2V Typ, to support  IGBT Gate Drive

    12.5V Typ

    -
  • 0 in reply to Yunsheng Qu
    TI__Intellectual 1420 points

    Hi Yunsheng,

    Thanks for your sharing. 

    Customer also wants to know the performance of both devices. Is UCC28180 has better iTHD performance because it has trimmed current loop? 

    If using external OCP, can customer use the same Rsense (3mΩ) for UCC28180 or UCC28019A? The power is about 3kW. Is there anything customer should care about when replacing UCC28180 to UCC28019A? Thanks.

  • 0 in reply to Yuting Li
    TI__Genius 9790 points

    Hi, Yuting

    1. yes, UCC28180 has better iTHD than UCC28019A. because UCC28180 is upgrade version of UCC28019A. trimmed current loop is major method to achieve better iTHD. 

    2. It is recommended to design Rsense based on OCP threshold of UCC28019A, becase ISENSE signal is not only for OCP, it also be used in current feedback. 

    3. beside Rsense, pin4 of UCC28019A should be configured as brown-in/out function.

    The most important point: you should make sure UCC28019A can be purchased or not, since there is shortage issue for many parts. 

    Yunsheng