Product details

Topology Boost Control mode CCM Practical operating frequency (Max) (MHz) 0.3 UVLO thresholds on/off (V) 10.2/9.2 Device type Controllers Operating supply current (mA) 20 Features > 750W Applications, Average Current Mode, Continuous Control Mode , Interleaved, OVP, Programable Switching Frequency, Interleaved Rating Catalog Operating temperature range (C) -40 to 125, -40 to 85
Topology Boost Control mode CCM Practical operating frequency (Max) (MHz) 0.3 UVLO thresholds on/off (V) 10.2/9.2 Device type Controllers Operating supply current (mA) 20 Features > 750W Applications, Average Current Mode, Continuous Control Mode , Interleaved, OVP, Programable Switching Frequency, Interleaved Rating Catalog Operating temperature range (C) -40 to 125, -40 to 85
SOIC (DW) 20 132 mm² 12.8 x 10.3 TSSOP (PW) 20 42 mm² 6.5 x 6.4
  • Interleaved Average Current-Mode PWM Control
    With Inherent Current Matching
  • Advanced Current Synthesizer Current Sensing
    for Superior Efficiency
  • Highly-Linear Multiplier Output With Internal
    Quantized Voltage Feed-Forward Correction for
    Near-Unity PF
  • Programmable Frequency from 30 kHz to 300 kHz
  • Programmable Maximum Duty-Cycle Clamp
  • Programmable Frequency-Dithering Rate and
    Magnitude for Enhanced EMI Reduction
    • Magnitude: 3 kHz to 30 kHz
    • Rate: Up to 30 kHz
  • External-Clock Synchronization Capability
  • Enhanced Load and Line Transient Response
    through Voltage Amplifier Output Slew-Rate
    Correction
  • Programmable Peak Current Limiting
  • Bias-Supply UVLO, Overvoltage Protection, Open-
    Loop Detection, and PFC-Enable Monitoring
  • External PFC-Disable Interface
  • Open-Circuit Protection on VSENSE and VINAC
    pins
  • Programmable Soft-Start
  • Interleaved Average Current-Mode PWM Control
    With Inherent Current Matching
  • Advanced Current Synthesizer Current Sensing
    for Superior Efficiency
  • Highly-Linear Multiplier Output With Internal
    Quantized Voltage Feed-Forward Correction for
    Near-Unity PF
  • Programmable Frequency from 30 kHz to 300 kHz
  • Programmable Maximum Duty-Cycle Clamp
  • Programmable Frequency-Dithering Rate and
    Magnitude for Enhanced EMI Reduction
    • Magnitude: 3 kHz to 30 kHz
    • Rate: Up to 30 kHz
  • External-Clock Synchronization Capability
  • Enhanced Load and Line Transient Response
    through Voltage Amplifier Output Slew-Rate
    Correction
  • Programmable Peak Current Limiting
  • Bias-Supply UVLO, Overvoltage Protection, Open-
    Loop Detection, and PFC-Enable Monitoring
  • External PFC-Disable Interface
  • Open-Circuit Protection on VSENSE and VINAC
    pins
  • Programmable Soft-Start

The UCC28070 is an advanced power factor correction (PFC) device that integrates two pulse-width modulators (PWMs) operating 180° out of phase. This interleaved PWM operation generates substantial reduction in the input and output ripple currents, allowing the conducted-EMI filtering to become easier and less expensive. A significantly improved multiplier design provides a shared current reference to two independent current amplifiers that ensures matched average-current mode control in both PWM outputs while maintaining a stable, low-distortion, sinusoidal input-line current.

The UCC28070 device contains multiple innovations including current synthesis and quantized voltage feed-forward to promote performance enhancements in PF, efficiency, THD, and transient response. Features including frequency dithering, clock synchronization, and slew rate enhancement further expand the potential performance enhancements.

The UCC28070 device also contains a variety of protection features including output-overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection.

The UCC28070 is an advanced power factor correction (PFC) device that integrates two pulse-width modulators (PWMs) operating 180° out of phase. This interleaved PWM operation generates substantial reduction in the input and output ripple currents, allowing the conducted-EMI filtering to become easier and less expensive. A significantly improved multiplier design provides a shared current reference to two independent current amplifiers that ensures matched average-current mode control in both PWM outputs while maintaining a stable, low-distortion, sinusoidal input-line current.

The UCC28070 device contains multiple innovations including current synthesis and quantized voltage feed-forward to promote performance enhancements in PF, efficiency, THD, and transient response. Features including frequency dithering, clock synchronization, and slew rate enhancement further expand the potential performance enhancements.

The UCC28070 device also contains a variety of protection features including output-overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection.

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Technical documentation

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Type Title Date
* Data sheet UCC28070 Interleaving Continuous Conduction Mode PFC Controller datasheet (Rev. F) 18 Apr 2016
Application note UCC2806x PCB Layout Guideline for PFC 29 Apr 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Are you on-board? Demystifying EV charging systems 31 Jul 2017
Technical article Is PFC possible without input voltage sensing? 14 Sep 2016
Technical article Staying cool, efficiently 22 Aug 2016
White paper An Interleaved PFC Preregulator for High-Power Converters 28 Apr 2015
More literature Design Review of a Full-Featured 350-W Offline Power Converter 29 Oct 2013
Application note UCC28070 300W Interleaved PFC Pre-regulator Design Review (Rev. B) 08 Jul 2010
Application note UCC28070 Implement Bridgeless PFC Pre-Regulator Design 18 Jun 2009
User guide UCC28070, 300-W Interleaved PFC Pre-Regulator (Rev. B) 12 May 2009

Design & development

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

Evaluation board

UCC28070EVM — UCC28070 Evaluation module

The UCC28070 evaluation module is a 300W, two-phase interleaved, PFC pre-regulator that uses average current mode control techniques to achieve near unity power factor. The pre-regulator was designed to operate off a universal ac line input of 85V to 265V and provides a regulated 390V dc output (...)
In stock
Limit: 3
Simulation model

UCC28070 PSpice Start-up Simulation Using Average Model

SLUM097.ZIP (76 KB) - PSpice Model
Simulation model

UCC28070 PSpice Average Model

SLUM098.ZIP (210 KB) - PSpice Model
Simulation model

UCC28070 TINA-TI Start-up Simulation Using Average Model

SLUM328.TSC (813 KB) - TINA-TI Reference Design
Simulation model

UCC28070 TINA-TI Spice Average Model

SLUM329.ZIP (31 KB) - TINA-TI Spice Model
Calculation tool

UCC28070 Excel Applications Design Tool (Rev. A)

SLUC114A.ZIP (302 KB)
Gerber file

UCC28070 Mathcad Design Tool

SLUC667.ZIP (217 KB)
Reference designs

PMP40261 — 800-W High efficiency bridgeless Power Factor Correction (PFC) reference design

This reference design is a bridgeless PFC circuit using UCC28070 Interleaving CCM PFC controller to provide 390-V /2-A output from universal AC input. The circuit uses Average Current Mode PWM control with advanced internal current synthesizer for current sensing. This design achieves 96.57% peak (...)
Reference designs

PMP5568 — A Fully Featured, 350W Offline High Performance Power Supply Reference Design

This project is a complete 350W, high performance, high speed offline power supply solution. It contains a novel, microcontroller-driven synchronous bridge rectifier, a 2-phase interleaved PFC stage and a phase-shifted fullbridge as down converter. It has an universal input (85 .. 265V AC) and the (...)
Reference designs

PMP4311 — 5KW Interleaved CCM Power Factor Correction Converter

PMP4311 is for VFAC (Variable Frequency Air-Conditioner) applications, which use TI Interleaved CCM PFC controller UCC28070 to achieve 5KW two phases interleaved PFC and use UCC28610 as an auxiliary Flyback Power Supply.
Reference designs

PMP4259 — Pre-Regulator for Air Conditioner 400Vdc Output with 3kW

PMP4259 is a universal AC input, 400V output 3000W interleave PFC controlled by UCC28070.
Reference designs

PR779 — A 1.2kW Universal Input Interleaved CCM PFC Power Board

The PR779 is a 1.2 kW universal input (85 to 270 VRMS) interleaved PFC converter with 390 VDC output. It achieves efficiencies greater than 95% at 115 Vac from 20% to 100% load. Efficiency is greater than 97% for the same load group when input is 230 Vac (...)
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SOIC (DW) 20 View options
TSSOP (PW) 20 View options

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