Texas Instruments UCC12050 Isolated DC-DC Converter

Texas Instruments UCC12050 Isolated DC-DC Converter comes with a 5kVRMS reinforced isolation rating designed to provide efficient, isolated power to isolated circuits that require a bias supply with well-regulated output voltages. The device integrates a transformer and DC-DC controller with a proprietary architecture to provide 500mW (typical) of isolated power with high efficiency and low EMI. The UCC12040 integrates protection features for increased system robustness. The device also has an enable pin, synchronization capability, and regulated 5V or 3.3V output options with the headroom. The UCC12050 is a low-profile, miniaturized solution offered in a wide-body SOIC package with 2.65mm height (typical).


  • High-efficiency DC-DC converter with integrated transformer technology
  • Meets CISPR32 Class B EMI limits without ferrite beads across entire load range on a 2-layer PCB
  • Robust isolation barrier
    • Isolation rating: 5kVRMS
    • Surge capability: 10kVPK
    • Working voltage: 1.2kVRMS
    • CMTI (typical): ±100V/ns
  • Output power (typical): 500mW
  • Regulated 5.0V or 3.3V output with selectable 400mV headroom voltage to power an LDO
  • Input voltage: 4.5V to 5.5V
  • Short circuit recovery
  • Thermal shutdown
  • 16-pin wide-body SOIC package with > 8mm creepage and clearance
  • Extended temperature range: –40ºC to 125ºC
  • Planned safety-related certifications
    • 7071VPK reinforced isolation per DIN V VDE V 0884-11:2017-01
    • 5000VRMS isolation for 1 minute per UL 1577
    • CSA certification per IEC 60950-1, IEC 62368- 1 and IEC 60601-1 end equipment standards
    • CQC approval per GB4943.1-2011


  • PLC analog input and output modules
  • Isolated voltage and current sensing
  • Protection relays and smart breakers
  • RS-485/RS-422/CAN transceiver
  • Patient monitoring
  • Isolated communications module

Functional Block Diagram

Block Diagram - Texas Instruments UCC12050 Isolated DC-DC Converter
Published: 2020-01-08 | Updated: 2022-03-11