20-pin (PW) package image


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

ACTIVE custom-reels CUSTOM Custom reel may be available


Qty Price

Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

Package qty | Carrier 70 | TUBE
Qty | Price 1ku | +

Quality information

Rating Catalog
RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish / Ball material
  • MSL rating / Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
View or download

Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins TSSOP (PW) | 20
Operating temperature range (°C) -40 to 125
Package qty | Carrier 2,000 | LARGE T&R

Features for the UCC28070A

  • 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
    (10 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
  • 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

Description for the UCC28070A

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 10 kHz to 300 kHz, thus extending the range of operation compared to the UCC28070 device whose minimum operating frequency was limited to 30 kHz. 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.


Qty Price

Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

Package qty | Carrier 70 | TUBE
Qty | Price 1ku | +

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

Learn more

Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

Learn more