Product details

Vin (Max) (V) 27 Vin (Min) (V) 21 Iout (Max) (A) 0.1 Features Regulated, dual-output, 1.5W, power good, soft-start, enable, UVLO Operating temperature range (C) -40 to 125 Regulated outputs (#) 2 Package type Leaded TI functional safety category Functional Safety-Capable
Vin (Max) (V) 27 Vin (Min) (V) 21 Iout (Max) (A) 0.1 Features Regulated, dual-output, 1.5W, power good, soft-start, enable, UVLO Operating temperature range (C) -40 to 125 Regulated outputs (#) 2 Package type Leaded TI functional safety category Functional Safety-Capable
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C ≤ TJ ≤ 150°C
    • Temperature grade 1:–40 °C ≤ TA ≤ 125°C
  • Fully integrated high-efficiency isolated DC/DC converter with isolation transformer
  • Isolated DC/DC for driving: IGBTs, SiC FETs
  • > 1.5-W output power at T A = 105 °C
  • Input voltage range: 21 V to 27 V with 32-V absolute maximum
  • Adjustable (VDD – VEE) output voltage (with external resistors): 18 V to 25 V, ±1.3 % over full temperature range
  • Adjustable (COM – VEE) output voltage (with external resistors): from 2.5 V to (VDD – VEE), ±1.3 %
  • Low electromagnetic emissions
  • UVLO, OVLO, Power Good, soft-start, short-circuit, power-limit, and over temperature protection
  • CMTI > 150 kV/µs
  • 36-pin, wide SOIC package
  • Planned safety-related certifications:
    • 5657-VPK 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
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C ≤ TJ ≤ 150°C
    • Temperature grade 1:–40 °C ≤ TA ≤ 125°C
  • Fully integrated high-efficiency isolated DC/DC converter with isolation transformer
  • Isolated DC/DC for driving: IGBTs, SiC FETs
  • > 1.5-W output power at T A = 105 °C
  • Input voltage range: 21 V to 27 V with 32-V absolute maximum
  • Adjustable (VDD – VEE) output voltage (with external resistors): 18 V to 25 V, ±1.3 % over full temperature range
  • Adjustable (COM – VEE) output voltage (with external resistors): from 2.5 V to (VDD – VEE), ±1.3 %
  • Low electromagnetic emissions
  • UVLO, OVLO, Power Good, soft-start, short-circuit, power-limit, and over temperature protection
  • CMTI > 150 kV/µs
  • 36-pin, wide SOIC package
  • Planned safety-related certifications:
    • 5657-VPK 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

UCC14240-Q1 is a high isolation voltage DC/DC module designed to provide power to IGBT or SiC gate drivers. The high-accuracy output voltages provide better channel enhancement for higher system efficiency without over-stressing the power device gate. The module integrates a transformer and DC/DC controller with a proprietary architecture to achieve high efficiency with very low emissions.

The UCC14240-Q1 provides > 1.5 W (typical) of isolated output power at high efficiency. Requiring a minimum of external components and including on-chip device protection, the module provides extra features such as input under-voltage lockout, over-voltage lockout, output voltage powergood comparators, over-temperature shutdown, soft-start timing, adjustable isolated positive and negative output voltage, an enable pin, and an open-drain output powergood pin.

UCC14240-Q1 is a high isolation voltage DC/DC module designed to provide power to IGBT or SiC gate drivers. The high-accuracy output voltages provide better channel enhancement for higher system efficiency without over-stressing the power device gate. The module integrates a transformer and DC/DC controller with a proprietary architecture to achieve high efficiency with very low emissions.

The UCC14240-Q1 provides > 1.5 W (typical) of isolated output power at high efficiency. Requiring a minimum of external components and including on-chip device protection, the module provides extra features such as input under-voltage lockout, over-voltage lockout, output voltage powergood comparators, over-temperature shutdown, soft-start timing, adjustable isolated positive and negative output voltage, an enable pin, and an open-drain output powergood pin.

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Technical documentation

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* Data sheet UCC14240-Q1 1.5-W, 24-V VIN, High-Efficiency, > 3 kVRMS, Isolated DC/DC Module datasheet (Rev. A) PDF | HTML 10 Nov 2021
White paper Design Priorities in EV Traction Inverter With Optimum Performance PDF | HTML 23 Sep 2022
White paper Traction Inverters – A Driving Force Behind Vehicle Electrification PDF | HTML 08 Sep 2022
Technical article How to design high-voltage systems with higher reliability while reducing solution size and cost 08 Jun 2022
White paper High-Voltage Semiconductor Solutions for Meeting Isolation Requirements (Rev. A) PDF | HTML 06 Jun 2022
White paper 以可靠且經濟實惠的隔離技術解決高電壓設計難題 (Rev. A) PDF | HTML 06 Jun 2022
White paper 높 은 신뢰도와 합리적인 가격대의 절연 기술 개발과 관련한 고전압 설계 문 제의 해결.. (Rev. A) PDF | HTML 06 Jun 2022
Technical article Increasing power density with an integrated GaN solution 14 Mar 2022
Technical article Misconceptions about EV charging 24 Feb 2022
Application note UCC14240-Q1 Simplifies HEV, EV, Bias Supply Design for Isolated Gate Drivers PDF | HTML 12 Feb 2022
More literature Isolated bias supply solutions for isolated gate drivers 15 Dec 2021
Technical article Driving next-generation EV systems with a distributed architecture 27 Sep 2021
Certificate UCC14240EVM-052 EU RoHS Declaration of Conformity (DoC) 02 Sep 2021
EVM User's guide Using the UCC14240EVM-052 for Biasing Traction Inverter Gate Driver ICs Requiri PDF | HTML 24 Aug 2021

Design & development

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

Evaluation board

UCC14240EVM-052 — UCC14240-Q1 evaluation module for 1.5-W dual-output isolated DC-DC converter gate driver bias

The UCC14240-Q1 evaluation module (EVM) is a DC/DC converter module, providing 1.5-W of 3 kVRMS, isolated power in a low-profile, 3.5-mm, wide body SOIC integrated package. The UCC12040EVM-052 EVM can operate from 21 V < VIN < 27 V and is configured for dual outputs of VDD = +15 V and VEE = (...)

User guide: PDF | HTML
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Simulation model

UCC14240-Q1 Simplis Model

SLUM822.ZIP (203 KB) - SIMPLIS Model
Reference designs

PMP23223 — Smart isolated gate driver with bias supply reference design

This reference design demonstrates the combination of UCC21732 gate driver with a UCC14xxx series bias supply. This design can be used to drive a variety of power switches, including connecting directly to a Wolfspeed Silicon Carbide (SiC) field-effect transistor (FET) module. This reference (...)
Reference designs

PMP22817 — Automotive SPI-programmable gate driver and bias supply with integrated transformer reference design

This reference design provides isolated-bias supply and isolated-gate driver for power switches in traction inverters and onboard chargers. Both the bias power and driver provide the high isolation (3-kV RMS for one minute) needed for 800-VDC bus application. The isolated bias provides 24 VDC both (...)
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