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UCC14140-Q1

ACTIVE

Automotive, 1.5-W, 12-V VIN, 25-V VOUT high-density >3-kVRMS isolated DC/DC module

Product details

Rating Automotive Topology Full-bridge Vin (max) (V) 18 Vin (min) (V) 8.5 Vout (max) (V) 25 Vout (min) (V) 18 Features 1.5W, Dual output, Enable, Power good, Regulated, Soft start, UVLO adjustable Device type Isolated modules Regulated outputs (#) 2 TI functional safety category Functional Safety-Capable Isolation rating Basic Output power (W) 1.5 Operating temperature range (°C) -40 to 125 Control mode Internally Regulated with Dual Adjustable Outputs
Rating Automotive Topology Full-bridge Vin (max) (V) 18 Vin (min) (V) 8.5 Vout (max) (V) 25 Vout (min) (V) 18 Features 1.5W, Dual output, Enable, Power good, Regulated, Soft start, UVLO adjustable Device type Isolated modules Regulated outputs (#) 2 TI functional safety category Functional Safety-Capable Isolation rating Basic Output power (W) 1.5 Operating temperature range (°C) -40 to 125 Control mode Internally Regulated with Dual Adjustable Outputs
SO-MOD (DWN) 36 131.84 mm² (12.8 mm × 10.3 mm)
  • Fully integrated high-density isolated DC/DC module with isolation transformer
  • Isolated DC/DC for driving: IGBTs, SiC FETs
  • Input voltage range: 8 V to 18 V with 32-V absolute maximum
  • 1.5-W output power for 10.8 V < V VIN < 13.2 V, at T A ≤ 85 °C
  • 1-W output power for 8 V < V VIN < 18 V, at T A ≤ 85 °C
  • Adjustable (VDD – VEE) output voltage (with external resistors): 15 V to 25 V, ±1.3 % regulation accuracy over full temperature range
  • Adjustable (COM – VEE) output voltage (with external resistors): 2.5 V to (VDD – VEE), ±1.3 % regulation accuracy over full temperature range
  • Low electromagnetic emission with spread spectrum modulation and integrated transformer
  • Enable, Power Good, UVLO, OVLO, soft-start, short-circuit, power-limit, under-voltage, overvoltage, and over-temperature protection
  • CMTI > 150 kV/µs
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C ≤ T J ≤ 150°C
    • Temperature grade 1:–40 °C ≤ T A ≤ 125°C
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Planned safety-related certifications:
    • 5657-VPK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 3000-VRMS isolation for 1 minute per UL 1577
    • Basic insulation per CQC GB4943.1
  • 36-pin, wide SSOP package
  • Fully integrated high-density isolated DC/DC module with isolation transformer
  • Isolated DC/DC for driving: IGBTs, SiC FETs
  • Input voltage range: 8 V to 18 V with 32-V absolute maximum
  • 1.5-W output power for 10.8 V < V VIN < 13.2 V, at T A ≤ 85 °C
  • 1-W output power for 8 V < V VIN < 18 V, at T A ≤ 85 °C
  • Adjustable (VDD – VEE) output voltage (with external resistors): 15 V to 25 V, ±1.3 % regulation accuracy over full temperature range
  • Adjustable (COM – VEE) output voltage (with external resistors): 2.5 V to (VDD – VEE), ±1.3 % regulation accuracy over full temperature range
  • Low electromagnetic emission with spread spectrum modulation and integrated transformer
  • Enable, Power Good, UVLO, OVLO, soft-start, short-circuit, power-limit, under-voltage, overvoltage, and over-temperature protection
  • CMTI > 150 kV/µs
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C ≤ T J ≤ 150°C
    • Temperature grade 1:–40 °C ≤ T A ≤ 125°C
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Planned safety-related certifications:
    • 5657-VPK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 3000-VRMS isolation for 1 minute per UL 1577
    • Basic insulation per CQC GB4943.1
  • 36-pin, wide SSOP package

UCC14140-Q1 is an automotive qualified high isolation voltage DC/DC power module designed to provide power to IGBT or SiC gate drivers. The UCC14140-Q1 integrates a transformer and DC/DC controller with a proprietary architecture to achieve high density with very low emissions. The high-accuracy output voltages provide better channel enhancement for higher system efficiency without over-stressing the power device gate. The input voltage of UCC14140-Q1 supports both wide LiFePO 4 battery voltage of electric vehicle (8 V-18 V) and regulated 12-V rail (10.8 V-13.2 V), with different output power.

The fully integrated module with on-chip device protection requires a minimum of external components, and provides extra features such as input under-voltage lockout, over-voltage lockout, output voltage power-good comparators, over-temperature shutdown, soft-start time-out, adjustable isolated positive and negative output voltage, an enable pin, and an open-drain output power-good pin.

UCC14140-Q1 is an automotive qualified high isolation voltage DC/DC power module designed to provide power to IGBT or SiC gate drivers. The UCC14140-Q1 integrates a transformer and DC/DC controller with a proprietary architecture to achieve high density with very low emissions. The high-accuracy output voltages provide better channel enhancement for higher system efficiency without over-stressing the power device gate. The input voltage of UCC14140-Q1 supports both wide LiFePO 4 battery voltage of electric vehicle (8 V-18 V) and regulated 12-V rail (10.8 V-13.2 V), with different output power.

The fully integrated module with on-chip device protection requires a minimum of external components, and provides extra features such as input under-voltage lockout, over-voltage lockout, output voltage power-good comparators, over-temperature shutdown, soft-start time-out, adjustable isolated positive and negative output voltage, an enable pin, and an open-drain output power-good pin.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet UCC14140-Q1 Automotive 1.5-W, 12-V VIN, 25-V VOUT, High-Density, > 3 kVRMS, Isolated DC/DC Module datasheet PDF | HTML Feb 1, 2022
White paper Addressing High-Volt Design Challenges w/ Reliable and Affordable Isolation Tech (Rev. D) PDF | HTML May 15, 2026
White paper Design Priorities in EV Traction Inverters (Rev. B) PDF | HTML Feb 13, 2026
Certificate UL Certificate of Compliance to UL1577 File No. E181974 (Rev. A) Jan 7, 2025
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. S) PDF | HTML Sep 3, 2024
Certificate UCC1xxx0-Q1 CQC Certificate of Compliance to GB4943.1-2022 CQC24001435060 Aug 16, 2024
Technical article Developing next-generation electrified propulsion systems PDF | HTML May 14, 2024
Functional safety information UCC1414x-Q1 Functional Safety FIT Rate, FMD and Pin FMA Jun 22, 2023
White paper Traction Inverters – A Driving Force Behind Vehicle Electrification PDF | HTML Sep 8, 2022
Technical article How to design high-voltage systems with higher reliability while reducing solution PDF | HTML Jun 8, 2022
Technical article Increasing power density with an integrated GaN solution PDF | HTML Mar 14, 2022
Technical article Misconceptions about EV charging PDF | HTML Feb 24, 2022
Application note UCC14240-Q1 Simplifies HEV, EV, Bias Supply Design for Isolated Gate Drivers PDF | HTML Feb 12, 2022
More literature Isolated bias supply solutions for isolated gate drivers Dec 15, 2021
Technical article Driving next-generation EV systems with a distributed architecture PDF | HTML Sep 27, 2021

Design & development

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

Evaluation board

UCC14141EVM-068 — UCC14141-Q1 evaluation module for 1.5-W dual-output isolated DC/DC converter gate driver bias

The UCC14141-Q1 is a DC/DC converter module, providing 1.5 W of 5 kVRMS, isolated power in a low profile, 3.5 mm, wide body SOIC integrated package. The UCC14141EVM-068 EVM can operate from 8 VIN to 18 VIN and is configured for dual outputs of VDD = 18 V and VEE= -4 V. This EVM demonstrates typical (...)

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Simulation model

UCC14140-Q1 SIMPLIS Model

SLUM867.ZIP (204 KB) - SIMPLIS model
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Simulation model

UCC14141-Q1 SIMPLIS Model (Rev. B)

SLUM849B.ZIP (204 KB) - SIMPLIS model
Supported products & hardware
Calculation tool

UCC14140-Q1-CALC — UCC14140-Q1 calculator tool

The UCC14140-Q1 calculator tool helps to generate BOM component values and accelerate application development.
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SO-MOD (DWN) 36 Ultra Librarian

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