UCC28070A

ACTIVE

Two-phase Interleaved CCM PFC controller with Extended Frequency Range (10kHz to 300kHz)

Product details

Vin (max) (V) 21 Operating temperature range (°C) -40 to 125 Control mode CCM Topology Boost, PFC controller Rating Catalog Features > 750 W applications, Average current mode, Continuous Control Mode, Interleaved, Overvoltage protection, Programable Switching Frequency Duty cycle (max) (%) 99
Vin (max) (V) 21 Operating temperature range (°C) -40 to 125 Control mode CCM Topology Boost, PFC controller Rating Catalog Features > 750 W applications, Average current mode, Continuous Control Mode, Interleaved, Overvoltage protection, Programable Switching Frequency Duty cycle (max) (%) 99
TSSOP (PW) 20 41.6 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
  • Extended range programmable frequency (10kHz to 300kHz)
  • Programmable maximum duty-cycle clamp
  • Programmable frequency dithering rate and magnitude for enhanced EMI reduction
    • Magnitude: 3kHz to 30kHz
    • Rate: Up to 30kHz
  • External clock synchronization capability
  • Enhanced load and line transient response through slew-rate correction of voltage amplifier output current
  • 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
  • Extended range programmable frequency (10kHz to 300kHz)
  • Programmable maximum duty-cycle clamp
  • Programmable frequency dithering rate and magnitude for enhanced EMI reduction
    • Magnitude: 3kHz to 30kHz
    • Rate: Up to 30kHz
  • External clock synchronization capability
  • Enhanced load and line transient response through slew-rate correction of voltage amplifier output current
  • 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 UCC28070A device is an extended-frequency-range derivative of the UCC28070 device, capable of operating at low switching frequencies desired for IGBT power-switch based PFC converters in high-power applications.

The UCC28070A device is capable of operating at frequencies from 10kHz to 300kHz, thus extending the range of operation compared to the UCC28070 device whose minimum operating frequency was limited to 30kHz. All the other features and benefits of the UCC28070 device are also available in the UCC28070A device. The 180° out-of-phase interleaved operation generates substantial reduction in input and output ripple currents and conducted EMI filtering becomes easier and less expensive.

Like the UCC28070 device, the UCC28070A device also features multiple innovations including current synthesis and quantized voltage feedforward 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. All protection features in the UCC28070 device such as output overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection are available in the UCC28070A device as well.

The UCC28070A device is an extended-frequency-range derivative of the UCC28070 device, capable of operating at low switching frequencies desired for IGBT power-switch based PFC converters in high-power applications.

The UCC28070A device is capable of operating at frequencies from 10kHz to 300kHz, thus extending the range of operation compared to the UCC28070 device whose minimum operating frequency was limited to 30kHz. All the other features and benefits of the UCC28070 device are also available in the UCC28070A device. The 180° out-of-phase interleaved operation generates substantial reduction in input and output ripple currents and conducted EMI filtering becomes easier and less expensive.

Like the UCC28070 device, the UCC28070A device also features multiple innovations including current synthesis and quantized voltage feedforward 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. All protection features in the UCC28070 device such as output overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection are available in the UCC28070A device as well.

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Technical documentation

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Type Title Date
* Data sheet UCC28070A Extended Frequency Range (10kHz to 300kHz), Interleaving Continuous Conduction Mode PFC Controller datasheet (Rev. B) PDF | HTML 08 Sep 2023
Product overview PFC Controller Step-by-Step Selection Guide PDF | HTML 28 Feb 2023
Application note UCC2806x PCB Layout Guideline for PFC 29 Apr 2019
White paper Advancing Power Supply Solutions Through the Promise of GaN 24 Feb 2015
More literature Design Review of a Full-Featured 350-W Offline Power Converter 29 Oct 2013
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. (...)
User guide: PDF
Not available on TI.com
Simulation model

UCC28070 PSpice Average Model

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

UCC28070 PSpice Start-up Simulation Using Average Model

SLUM097.ZIP (76 KB) - PSpice Model
Calculation tool

SLUC114 UCC28070 Excel Applications Design Tool

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
UCC28070 Two-phase Interleaved continuous conduction mode (CCM) PFC controller UCC28070A Two-phase Interleaved CCM PFC controller with Extended Frequency Range (10kHz to 300kHz)
Hardware development
Evaluation board
UCC28070EVM UCC28070 Evaluation module
Gerber file

UCC28070 Mathcad Design Tool

SLUC667.ZIP (217 KB)
Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 20 Ultra Librarian

Ordering & quality

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