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Texas Instruments UCC33420/UCC33420-Q1 1.5W Isolated DC/DC Modules

Texas Instruments UCC33420/UCC33420-Q1 Automotive-Qualified 1.5W Isolated DC/DC Modules feature a 3kVRMS isolation rating for providing efficient, isolated power to isolated circuits that require a bias supply with a well-regulated output voltage. TI UCC33420/UCC33420-Q1 integrates a transformer and DC/DC controller with a proprietary architecture to provide 1.5W (typical) isolated power with low EMI.

The UCC33420/UCC33420-Q1 integrates protection features for increased system robustness. The device also has an enable pin, a fault reporting mechanism, and a regulated 5.0V with a selectable headroom output voltage of 5.5V. This TI device comes in a miniaturized VSON package with a 1mm height (typical).

Features

  • High-efficiency DC/DC power module with integrated transformer technology
  • AEC-Q100 qualified (UCC33420-Q1)
  • -40°C to +125°C ambient operating temperature range
  • Functional safety-capable
  • Adaptive spread spectrum modulation (SSM)
  • Meets CISPR-25 Class 5 emission
  • Robust isolation barrier
    • 3kVRMS isolation rating
    • 6.5kVPK surge capability
    • 1159VPK working voltage
    • 200V/nS common mode transient immunity
  • Strong magnetic fields immunity
  • Overload and short-circuit protection
  • 1.5W maximum output power
  • 4.5V to 5.5V input voltage
  • 5.0V, 5.5V regulated selectable output voltage
  • Thermal shutdown
  • Low inrush current soft-start
  • Enable pin with a fault reporting mechanism
  • 12-pin VSON-FCRLF package
  • >4.1mm creepage and clearance
  • Planned safety-related certifications
    • Basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • UL 1577 / CSA component recognition program
    • UL certification per IEC 62368-1, and IEC 60601-1 end equipment standards

Applications

  • HV battery monitoring circuits
  • Isolated bias for isolated voltage and current sensors
  • Isolated bias for digital isolators
  • Isolated bias for isolated RS-485, RS-422, and CAN transceivers
  • Isolated bias for microcontroller (MCU) power

Resource

Datasheets

Simplified Application Diagram

Application Circuit Diagram - Texas Instruments UCC33420/UCC33420-Q1 1.5W Isolated DC/DC Modules

Battery Disconnect System Block Diagram

Block Diagram - Texas Instruments UCC33420/UCC33420-Q1 1.5W Isolated DC/DC Modules
Opublikowano: 2024-02-22 | Zaktualizowano: 2025-06-03