Product details

Topology Flyback, Boost, Buck, SEPIC, Forward Duty cycle (Max) (%) 50 Supply voltage (Max) (V) 28 UVLO thresholds on/off (V) 18.8/15.5 Features Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Multi-topology, Programmable Max Duty Cycle Operating temperature range (C) -40 to 125 Rating Catalog Frequency (Max) (kHz) 1000 Gate drive (Typ) (A) 1
Topology Flyback, Boost, Buck, SEPIC, Forward Duty cycle (Max) (%) 50 Supply voltage (Max) (V) 28 UVLO thresholds on/off (V) 18.8/15.5 Features Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Multi-topology, Programmable Max Duty Cycle Operating temperature range (C) -40 to 125 Rating Catalog Frequency (Max) (kHz) 1000 Gate drive (Typ) (A) 1
SOIC (D) 8
  • 28-V VDD recommended max operating ratings
  • New undervoltage lockout options to support both Si and SiC MOSFET applications
  • Operating frequency: 1 MHz
  • 50-µA Standby Current, 75-µA Maximum
  • Low operating current: 1.3 mA (@ fOSC = 52 kHz)
  • Fast, cycle-by-cycle overcurrent limiting: 35-ns
  • Peak driving current: ±1-A. Rail-to-rail output:
    • 25-ns rise time
    • 20-ns fall time
  • Initial trimmed 2.5-V error amplifier reference: ±1%
  • Pin-to-pin compatible to UCCx8C4x and drop-in substitution
  • 28-V VDD recommended max operating ratings
  • New undervoltage lockout options to support both Si and SiC MOSFET applications
  • Operating frequency: 1 MHz
  • 50-µA Standby Current, 75-µA Maximum
  • Low operating current: 1.3 mA (@ fOSC = 52 kHz)
  • Fast, cycle-by-cycle overcurrent limiting: 35-ns
  • Peak driving current: ±1-A. Rail-to-rail output:
    • 25-ns rise time
    • 20-ns fall time
  • Initial trimmed 2.5-V error amplifier reference: ±1%
  • Pin-to-pin compatible to UCCx8C4x and drop-in substitution

The UCCx8C5x family are high-performance, current-mode PWM controllers with low startup current. The UCCx8C5x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCCx8C4x family. With the VDD absolute maximum rating extended from 20 V to 30 V for optimal gate voltage design on 20-Vgs, 18-Vgs or 15-Vgs SiC MOSFETs by the introduction of UCC28C56H/L, UCC28C57H/L and UCC28C58/9, three new sets of UVLO options allow SiC FET operating reliably while avoiding thermal runaway. Existing UVLO options of UCCx8C4x are maintained with improvements on startup current, operating current and VDD absolute maximum rating.

The UCC28C5x series is specified for operation from –40°C to 125°C, and the UCC38C5x series is specified for operation from 0°C to 85°C.

The table below compares the improvements from UCCx8C5x to UCCx8C4x.

The UCCx8C5x family is offered in 8-pin VSSOP (DGK), and 8-pin SOIC (D) packages.

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The UCCx8C5x family are high-performance, current-mode PWM controllers with low startup current. The UCCx8C5x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCCx8C4x family. With the VDD absolute maximum rating extended from 20 V to 30 V for optimal gate voltage design on 20-Vgs, 18-Vgs or 15-Vgs SiC MOSFETs by the introduction of UCC28C56H/L, UCC28C57H/L and UCC28C58/9, three new sets of UVLO options allow SiC FET operating reliably while avoiding thermal runaway. Existing UVLO options of UCCx8C4x are maintained with improvements on startup current, operating current and VDD absolute maximum rating.

The UCC28C5x series is specified for operation from –40°C to 125°C, and the UCC38C5x series is specified for operation from 0°C to 85°C.

The table below compares the improvements from UCCx8C5x to UCCx8C4x.

The UCCx8C5x family is offered in 8-pin VSSOP (DGK), and 8-pin SOIC (D) packages.

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Technical documentation

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Type Title Date
* Data sheet UCCx8C5x BiCMOS Low-Power Current-Mode PWM Controller for Si and SiC MOSFETs datasheet PDF | HTML 21 Jun 2022
Functional safety information UCC28C5x Functional Safety FIT rate, FMD and Pin FMA PDF | HTML 06 Sep 2022
User guide Using the UCC28C56EVM-066 (Rev. A) PDF | HTML 30 Jun 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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SOIC (D) 8 View options

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