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UCC28C44-Q1

ACTIVE

Automotive, 20-V, low-power current-mode PWM controller, 14.5-V/9-V UVLO, 50% duty cycle

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Data sheet

A newer version of this product is available

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NEW UCC28C54-Q1 ACTIVE Automotive, 30-V, low-power current-mode PWM controller, 14.5-V/9-V UVLO, 50% duty cycle Higher supply voltage, lower start-up and operating current, and better efficiency.

UCC28C44-Q1

ACTIVE
Data sheet Order now

Product details

Topology Boost, Buck, Flyback, Forward, SEPIC Control mode Current Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 1000 Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology, Programmable max duty cycle UVLO thresholds on/off (V) 14.5/9 Operating temperature range (°C) -40 to 125 Rating Automotive Gate drive (typ) (A) 1 Vin (max) (V) 18 TI functional safety category Functional Safety-Capable
Topology Boost, Buck, Flyback, Forward, SEPIC Control mode Current Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 1000 Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology, Programmable max duty cycle UVLO thresholds on/off (V) 14.5/9 Operating temperature range (°C) -40 to 125 Rating Automotive Gate drive (typ) (A) 1 Vin (max) (V) 18 TI functional safety category Functional Safety-Capable
SOIC (D) 8 29.4 mm² 4.9 x 6
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: -40⁰C to 125⁰C
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C4B: 750 V
  • Functional Safety-Capable
  • Operating frequency: 1 MHz Maximum
  • 50-µA standby current, 100-µA maximum
  • Low operating current of 2.3 mA at 52 kHz
  • Fast 35-ns cycle-by-cycle over-current limiting
  • ±1-A peak output current
  • Rail-to-rail output swings with 25-ns rise and 20-ns fall times
  • ±1% initial trimmed 2.5-V error amplifier reference
  • Trimmed oscillator discharge current
  • New undervoltage lockout versions
  • Create a custom design using the UCC28C4x-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: -40⁰C to 125⁰C
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C4B: 750 V
  • Functional Safety-Capable
  • Operating frequency: 1 MHz Maximum
  • 50-µA standby current, 100-µA maximum
  • Low operating current of 2.3 mA at 52 kHz
  • Fast 35-ns cycle-by-cycle over-current limiting
  • ±1-A peak output current
  • Rail-to-rail output swings with 25-ns rise and 20-ns fall times
  • ±1% initial trimmed 2.5-V error amplifier reference
  • Trimmed oscillator discharge current
  • New undervoltage lockout versions
  • Create a custom design using the UCC28C4x-Q1 with the WEBENCH Power Designer

The UCC28C4x-Q1 family devices are high performance current-mode PWM controllers.

The UCC28C4x-Q1 family supports a fixed-frequency, peak current-mode flyback implementation with UVLO and maximum duty-cycle limit options. UCC28C4X-Q1 can be configured with either primary-side regulation using an auxiliary winding or secondary-side regulation with the use of an opto-coupler. This family of devices features high frequency operation up to 1 MHz with low start up and operating currents, thus minimizing start up loss and operating power consumption for improved efficiency. The devices also feature a fast current sense to output delay time of 35 ns, and a ±1-A peak output current capability for driving large external MOSFETs directly.

The UCC28C4x-Q1 family is offered in the 8-pin SOIC (D) package.

The UCC28C4x-Q1 family devices are high performance current-mode PWM controllers.

The UCC28C4x-Q1 family supports a fixed-frequency, peak current-mode flyback implementation with UVLO and maximum duty-cycle limit options. UCC28C4X-Q1 can be configured with either primary-side regulation using an auxiliary winding or secondary-side regulation with the use of an opto-coupler. This family of devices features high frequency operation up to 1 MHz with low start up and operating currents, thus minimizing start up loss and operating power consumption for improved efficiency. The devices also feature a fast current sense to output delay time of 35 ns, and a ±1-A peak output current capability for driving large external MOSFETs directly.

The UCC28C4x-Q1 family is offered in the 8-pin SOIC (D) package.
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UCC28C45-Q1 ACTIVE Automotive, 20-V, low-power current-mode PWM controller, 8.4-V/7.6-V UVLO, 50% duty cycle This product has lower UVLO

Technical documentation

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Type Title Date
* Data sheet UCC28C4x-Q1 Automotive BiCMOS Low-Power Current-Mode PWM Controllers datasheet (Rev. G) PDF | HTML 12 Sep 2022
Application note Designing a Robust Traction Inverter Redundant Power Supply From 800 V Battery (Rev. C) PDF | HTML 16 Feb 2023
Functional safety information UCC28C4x-Q1 Functional Safety FIT rate, FMD, Pin FMA (Rev. A) PDF | HTML 14 Sep 2022
Selection guide UCC28C4X-Q1 selection guide for automotive isolated DC/DC aux power applications 07 Jun 2019

Design & development

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Evaluation board

UCC28C56EVM-066 — UCC28C56H-Q1 evaluation module for primary-side controlled (with AUX winding) flyback regulator

The UCC28C56EVM-066 is a highly efficient primary-side controlled (with AUX winding) flyback auxiliary power supply for EV and HEV automotive power trains. The design provides 15.2-VTYP, 40-W output for 800-V battery systems. It will deliver 40 W over the input voltage range from 125 V to 1000 V. (...)

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Simulation model

UCCx8C44 Unencrypted PSpice Transient Model

SLUM532.ZIP (5 KB) - PSpice Model
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SOIC (D) 8 View options
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