Ucc12040/50 3 Kvrms and 5 Kvrms Isolated Dc/dc Converters

Texas Instruments’ 500 mW, high-efficiency low-EMI converters are suitable for ultra-high voltage applications.

Ucc12040_50 3 Kvrms and 5 Kvrms Isolated Dc_dc Converters

Texas Instruments’ UCC12040 and UCC12050 DC/DC converters with 3 kVRMS and 5 kVRMS reinforced isolation ratings, respectively, are designed to provide efficient, isolated power to isolated circuits that require a bias supply with well-regulated output voltages. These devices integrate a transformer and DC/DC controller with proprietary architecture to provide 500 mW (typical) of isolated power with high efficiency and low EMI.

The UCC12040/50 converters integrate protection features for increase system robustness. The devices feature an enable pin, synchronization capability and regulated 5 V or 3.3 V output options with the headroom. These low-profile, miniaturized converter solutions are available in a wide-body SOIC package with 2.65 mm height (typical).

Ucc12040_50 3 Kvrms and 5 Kvrms Isolated Dc_dc Converters


  • High-efficiency with integrated transformer technology
  • Meets CISPR32 Class B EMI limits without ferrite beads across the load range on a 2-layer PCB
  • Output power: 500 mW (typ.)
  • Input voltage: 4.5 V to 5.5 V
  • Package: 16-pin wide-body SOIC with >8 mm creepage and clearance
  • Regulated 5.0 V to 3.3 V output with selectable 400 mV headroom voltage to power an LDO
  • Short circuit recovery
  • Thermal shutdown
  • Extended temperature range: -40°C to +125°C
  • Planned safety-related certification:
    • CSA certification per IEC 60950-1, IEC 62368-1, and IEC 60601-1 end-equipment standards
    • CQC approval per GB4943.1-2011
    • 3,000 VRMS (UCC12040) and 5,000 VRMS (UCC12050) isolation for 1 minute per UL 1577
  • Robust isolation barrier:
    • CMTI: ±100 V/ns (typ.)
    • Isolation rating: 3 kVRMS (UCC12040) and 5 kVRMS (UCC12050)
    • Surge capability: 8 kVPK (UCC12040) and 10 kVPK (UCC12050)
    • Working voltage: 800 VRMS (UCC12040) and 1.2 kVRMS (UCC12050)

Source: Ucc12040/50 3 Kvrms and 5 Kvrms Isolated Dc/dc Converters

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