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UCC12050

ACTIVE

500-mW, high-efficiency, 5-kVRMS isolated DC/DC converter

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NEW UCC33421-Q1 ACTIVE Automotive, 5V/5V, 1.5W regulated 5kVRMS isolated DC/DC power module with integrated transformer Smaller footprint, increased power and efficiency.

Product details

Rating Catalog Topology Full-bridge Vin (max) (V) 5.5 Vin (min) (V) 4.5 Vout (max) (V) 5 Vout (min) (V) 3.3 Features 0.5W, Regulated, Reinforced isolation, Single output Device type Isolated modules Regulated outputs (#) 1 Isolation rating Reinforced Output power (W) 0.5 Operating temperature range (°C) -40 to 125 Control mode Internally Regulated with 3.3V or 5V Select
Rating Catalog Topology Full-bridge Vin (max) (V) 5.5 Vin (min) (V) 4.5 Vout (max) (V) 5 Vout (min) (V) 3.3 Features 0.5W, Regulated, Reinforced isolation, Single output Device type Isolated modules Regulated outputs (#) 1 Isolation rating Reinforced Output power (W) 0.5 Operating temperature range (°C) -40 to 125 Control mode Internally Regulated with 3.3V or 5V Select
SO-MOD (DVE) 16 106.09 mm² (10.3 mm × 10.3 mm)
  • 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: 5 kVRMS
    • Surge capability: 10 kVPK
    • Working voltage: 1.2 kVRMS
    • 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:
    • 7071-VPK reinforced isolation per DIN V VDE V 0884-11:2017-01
    • 5000-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
  • 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: 5 kVRMS
    • Surge capability: 10 kVPK
    • Working voltage: 1.2 kVRMS
    • 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:
    • 7071-VPK reinforced isolation per DIN V VDE V 0884-11:2017-01
    • 5000-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

UCC12050 is an automotive qualified DC/DC power module with 5-kVRMSreinforced 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 UCC12050 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 UCC12050 is a low-profile, miniaturized solution offered in a wide-body SOIC package with 2.65-mm height (typical).

UCC12050 is an automotive qualified DC/DC power module with 5-kVRMSreinforced 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 UCC12050 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 UCC12050 is a low-profile, miniaturized solution offered in a wide-body SOIC package with 2.65-mm height (typical).

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet UCC12050 High-Density, Low-EMI, 5-kVRMS Reinforced Isolation DC/DC Module datasheet (Rev. D) PDF | HTML Oct 6, 2020
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AB) Jul 15, 2026
Application note Introduction to HVDC Architecture and Solutions for Control and Protection (Rev. C) PDF | HTML May 19, 2026
White paper Addressing High-Volt Design Challenges w/ Reliable and Affordable Isolation Tech (Rev. D) PDF | HTML May 15, 2026
Certificate UCC120xx UL Certificate of Compliance Jan 7, 2025
Certificate UCC12050, UCC12051-Q1 CQC Certificate of Compliance to GB4943.1-2022 CQC20001273822 Aug 16, 2024
White paper Time-Saving and Cost-Effective Innovations for EMI Reduction (Rev. A) PDF | HTML Nov 28, 2023
White paper Understanding the trade-offs and technologies to increase power density (Rev. C) PDF | HTML Apr 14, 2023
Certificate UL Certificate of Compliance to UL1577 File No E181974 (UCC12050) Dec 7, 2022
Certificate CQC Certificate of Compliance to GB4943.1-2011 CQC20001273822 (EN) Dec 7, 2022
Certificate UL Certificate of Compliance to IEC 62368-1 US-36706-A1-UL (UCC12050) Dec 7, 2022
Certificate UL Certificate of Compliance to IEC 60950-1 US-36707-A1-UL (UCC12050) Dec 7, 2022
Certificate UL Certificate of Compliance to IEC 60601-1 US-36773-M1-UL (UCC12050) Dec 7, 2022
User guide UCC12050EVM-022 User's Guide (Rev. D) PDF | HTML Jan 26, 2022
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
Technical article The top 5 design challenges of remote patient monitoring PDF | HTML Feb 9, 2021
White paper Fundamentals of EMI Requirements for an Isolated DC/DC Converter Jan 7, 2021
Application note Topology Selection for Isolated Power Supplies in Patient Monitor (Rev. A) PDF | HTML Sep 2, 2020
Certificate UCC12050EVM-022 EU Declaration of Conformity (DoC) Apr 17, 2020
Technical article 35 years later, APEC continues to set the tone for innovation in power management PDF | HTML Feb 27, 2020
Technical article Isolation 101: How to find the right isolation solution for your application PDF | HTML Feb 11, 2020
Application brief A Reinforced-isolated Analog Input Chain for Space-constrained Applications Sep 1, 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

UCC12050EVM-022 — UCC12050DVE isolated DC-DC converter evaluation module

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, (...)
Supported products & hardware
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Simulation model

UCC12050 SIMPLIS Model

SNVMBT0.ZIP (83 KB) - SIMPLIS model
Supported products & hardware
Reference design

PMP22682 — 5-Vin to 5-Vout, 100-mA, low-EMI, 5-kVRMS reinforced isolation DC/DC power supply reference design

This reference design uses four UCC12050 high-efficiency, low-EMI, 5-kVRMS reinforced isolation, DC/DC converters on a single printed circuit board. The reference design includes additional provisions such as ferrite beads for optimized low-EMI emissions. Output voltages, VISO, can be selected for (...)
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Reference design

TIDA-00080 — Isolated delta-sigma modulator based AC/DC voltage and current measurement module reference design

This isolated shunt based current measurement unit enables high accuracy current measurement without the use of Current Transformers (CT). The isolation is achieved through the use of AMC1304 that incorporates both high voltage isolation as well as the Delta-Sigma Modulator. This solution (...)

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TIDA-00300 — Isolated power architecture reference design for communication and analog input/output modules

This reference design provides a means to isolate I2C or SPI communication lines. This is often required in grid infrastructure applications such as protection relays and circuit breakers where high voltages are involved. This reference design provides both power isolation and signal isolation.

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TIDA-00420 — ADC-based, digitally-isolated, wide-input, 16-channel, AC/DC binary input reference design

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, (...)

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Reference design

TIDA-010065 — High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design

This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom (...)
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TIDA-010203 — 4-kW single-phase totem pole PFC reference design with C2000 and GaN

This reference design is a 4-kW CCM totem-pole PFC with F280049/F280025 control card and LMG342x EVM board. This design demos a robust PFC solution, which avoids isolated current sense by putting the controller's ground in the middle of a MOSFET leg. Benefitting from non-isolation, AC current (...)
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TIDA-010253 — Battery control unit reference design for energy storage systems

This reference design is a central controller for a high-voltage Lithium-ion (Li-ion), lithium iron phosphate (LiFePO4) battery rack. This design provides driving circuits for high-voltage relay, communication interfaces, (including RS-485, controller area network (CAN), daisy chain, and Ethernet), (...)

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Reference design

TIDA-01576 — High accuracy analog input module reference design with 16-bit 1-MSPS dual simultaneous-sampling ADC

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 (...)
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SO-MOD (DVE) 16 Ultra Librarian

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