Product details


Vin (Max) (V) 5.5 Vin (Min) (V) 4.5 Iout (Max) (A) 0.1 Features Regulated, Single Output, 0.5W Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Package type Leaded open-in-new Find other Isolated DC/DC converters & modules

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  • High-density DC/DC module with optimized integrated transformer technology
  • Input voltage range: 4.5 V to 5.5 V
  • Output voltages (selectable): 5.4 V, 5.0 V, 3.7 V, 3.3 V
  • Output power: 500 mW
  • Peak efficiency: 60%
  • Line regulation (typical): 1%
  • Load regulation (typical): 1.5%
  • Meets CISPR32 Class B EMI limits without ferrite beads on a 2-layer PCB
  • Spread spectrum modulation (SSM)
  • Robust isolation barrier:
    • Isolation rating: 3 kVRMS
    • Surge capability: 6.5 kVPK
    • Working voltage: 850 VRMS
    • CMTI (typical): ±100 V/ns
  • Short circuit recovery
  • Thermal shutdown
  • 16-pin wide-body SOIC package with > 8-mm creepage and clearance
  • Extended temperature range: –40°C to 125°C
  • Safety-related certifications:
    • 5657-VPK basic isolation per DIN V VDE V 0884-11:2017- 01

    • 3000-VRMS isolation for 1 minute per UL 1577

    • UL certification per IEC 60950-1, IEC 62368- 1 and IEC 60601-1 end equipment standards
    • CQC approval per GB4943.1-2011
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UCC12040 is a DC/DC power module with 3-kVRMSbasic isolation rating designed to provide efficient, isolated power to isolated circuits that require a bias supply with a well-regulated output voltage. The device integrates a transformer and DC/DC controller with a proprietary architecture to provide 500 mW (typical) of isolated power with low EMI.

The UCC12040 integrates protection features for increased system robustness. The device also has an enable pin, synchronization capability, and regulated 5-V or 3.3-V output options with headroom. The UCC12040 is a low-profile, miniaturized solution offered in a wide-body SOIC package with 2.65-mm height.

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Technical documentation

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Type Title Date
* Data sheet UCC12040 High-Density, Low-EMI, 3-kVRMSBasic Isolation DC/DC Module datasheet (Rev. B) Jan. 13, 2021
Application note Introduction to HVDC Architecture and Solutions for Control and Protection (Rev. B) Sep. 07, 2021
User guide UCC12050EVM-022 User's Guide (Rev. C) Jun. 25, 2021
White paper Power Through the Isolation Barrier: The Landscape of Isolated DC/DC Bias Power (Rev. A) Mar. 25, 2021
More literature A simple, robust, and low-EMI solution for inverter gate-driver bias supplies Mar. 23, 2021
Application note Expanding Analog Input Channels in Grid Applications (Using 16-Channel, 16-Bit, (Rev. A) Feb. 26, 2021
White paper Fundamentals of EMI Requirements for an Isolated DC/DC Converter Jan. 07, 2021
White paper 透過節省時間和成本的創新技術 降低電源中的EMI Dec. 04, 2020
White paper 전원 공급 장치의 EMI 절감을 위한 시간 및 비용 효율적 혁신 Dec. 04, 2020
White paper Time-Saving and Cost-Effective Innovations for EMI Reduction Nov. 11, 2020
Application note Topology Selection for Isolated Power Supplies in Patient Monitor (Rev. A) Sep. 02, 2020
White paper Understanding the trade-offs and technologies to increase power density Jul. 02, 2020
White paper 絶縁バリアを通過する電力:絶縁DC/DCバイアス電源の状況 Jan. 28, 2020
Application note A Reinforced-isolated Analog Input Chain for Space-constrained Applications Sep. 01, 2019

Design & development

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Hardware development

document-generic User guide
The UCC12050EVM-022 is intended to allow designers to evaluate the performance characteristics and abilities of the UCC12050DVE. The EVM allows users to test functions of the UCC12050DVE such as: enable/disable, synchronize the device with an external clock source, detect external clock faults, and (...)
  • Easily validate all available output voltage selections
  • Test points for accurate ripple and transient response waveforms
  • EVM layout provides example of proper board layout for rated isolation and EMI perfomance
  • High efficiency, isoated power transfer of up to 500mW
  • Design is tested and provides all the (...)

Reference designs

ADC-based, digitally-isolated, wide-input, 16-channel, AC/DC binary input reference design
TIDA-00420 This reference design showcases a cost-optimized and scalable ADC-based AC/DC binary input module (BIM) architecture with reinforced isolation. The 16 channels of a 10- or 12-bit SAR ADC are used for sensing multiple binary inputs. The op amps, in addition to keeping the cost per-channel low (...)
document-generic Schematic
High accuracy analog input module reference design with 16-bit 1-MSPS dual simultaneous-sampling ADC
TIDA-01576 — This reference design accurately measures 16-channel AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range. This range covers protection and measurement requirements (including sampling requirements as per IEC 61850-9-2), which simplifies system design and improves (...)
document-generic Schematic

CAD/CAE symbols

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