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UCC28C51-Q1

ACTIVE

Automotive, 30-V, low-power current-mode PWM controller, 7-V/6.6-V UVLO, 50% duty cycle

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Data sheet

UCC28C51-Q1

ACTIVE
Data sheet Order now

Product details

Operating temperature range (°C) -40 to 150 Control mode Current Topology Boost, Buck, Flyback, Forward, SEPIC Rating Automotive Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology, Programmable max duty cycle Duty cycle (max) (%) 50 TI functional safety category Functional Safety-Capable
Operating temperature range (°C) -40 to 150 Control mode Current Topology Boost, Buck, Flyback, Forward, SEPIC Rating Automotive Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology, Programmable max duty cycle Duty cycle (max) (%) 50 TI functional safety category Functional Safety-Capable
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Undervoltage lockout options to support both Si and SiC MOSFET applications

  • 30-V VDD absolute maximum voltage

  • 1-MHz maximum Fixed frequency oeration
  • 50-µA startup current, 75-µA maximum
  • Low operating current : 1.3 mA at fOSC = 52 kHz
  • High operating TJ : 150℃ maximum
  • Fast 35-ns cycle-by-cycle over-current limiting
  • ±1-A peak driving current
  • Rail-to-rail output:
    • 25-ns rise time
    • 20-ns fall time
  • ±1% accurate 2.5-V error amplifier reference

  • Pin-to-pin compatible and drop-in replacement for UCC28C4x-Q1

  • Functional Safety-Capable
  • AEC-Q100 qualified with the following results
    • Device temperature grade 1: -40°C to 125°C
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C4B: 750 V
  • Undervoltage lockout options to support both Si and SiC MOSFET applications

  • 30-V VDD absolute maximum voltage

  • 1-MHz maximum Fixed frequency oeration
  • 50-µA startup current, 75-µA maximum
  • Low operating current : 1.3 mA at fOSC = 52 kHz
  • High operating TJ : 150℃ maximum
  • Fast 35-ns cycle-by-cycle over-current limiting
  • ±1-A peak driving current
  • Rail-to-rail output:
    • 25-ns rise time
    • 20-ns fall time
  • ±1% accurate 2.5-V error amplifier reference

  • Pin-to-pin compatible and drop-in replacement for UCC28C4x-Q1

  • Functional Safety-Capable
  • AEC-Q100 qualified with the following results
    • Device temperature grade 1: -40°C to 125°C
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C4B: 750 V

The UCC28C5x-Q1 family of devices are high performance current-mode PWM controllers which can be used to drive both Si and SiC MOSFETs in various applications. The UCC28C5x-Q1 family is a more efficient and robust version of the UCC28C4x-Q1.

The UCC28C5x-Q1 family has new UVLO thresholds that allow for reliable SiC MOSFET operation (UCC28C56-59-Q1), in addition to existing UVLO thresholds for continued Si MOSFET support (UCC28C50-55-Q1).

VDD absolute maximum voltage rating is extended from 20 V to 30 V for optimally driving the gate of 20-Vgs, 18-Vgs, or 15-Vgs SiC MOSFETs, while also allowing for the exclusion of an external LDO.

The UCC28C5x-Q1 family of devices are high performance current-mode PWM controllers which can be used to drive both Si and SiC MOSFETs in various applications. The UCC28C5x-Q1 family is a more efficient and robust version of the UCC28C4x-Q1.

The UCC28C5x-Q1 family has new UVLO thresholds that allow for reliable SiC MOSFET operation (UCC28C56-59-Q1), in addition to existing UVLO thresholds for continued Si MOSFET support (UCC28C50-55-Q1).

VDD absolute maximum voltage rating is extended from 20 V to 30 V for optimally driving the gate of 20-Vgs, 18-Vgs, or 15-Vgs SiC MOSFETs, while also allowing for the exclusion of an external LDO.

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UCC28C51 ACTIVE Industrial, 30-V, low-power current-mode PWM controller, 7-V/6.6-V UVLO, 50% duty cycle Industrial grade version of product.
UCC38C51 ACTIVE Commercial, 30-V, low-power current-mode PWM controller, 7-V/6.6-V UVLO, 50% duty cycle Industrial grade version with lower temperature range.

Technical documentation

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Type Title Date
* Data sheet UCC28C5x-Q1 Automotive Low-Power Current-Mode High-Performance PWM Controller for Si and SiC MOSFETs datasheet (Rev. C) PDF | HTML 14 Mar 2023
White paper Isolated Bias Power Supply Architecture for HEV and EV Traction Inverters PDF | HTML 11 Oct 2023
User guide Using the UCC28C56EVM-066 (Rev. C) PDF | HTML 07 Dec 2022
Functional safety information UCC28C5x-Q1 Funcitonal safety FIT rate, FMD, and pin FMA PDF | HTML 12 Sep 2022
Application note High Density Auxiliary Power Supply Using a SiC MOSFET for 800-V Traction Invert PDF | HTML 06 Jul 2022

Design & development

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

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. (...)

User guide: PDF | HTML
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Simulation model

UCC28C51 and UCC28C51-Q1 PSpice Model

SLUM840.ZIP (5 KB) - PSpice Model
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