UCC28070 Two-Phase Interleaved CCM PFC Controller | TI.com

UCC28070 (ACTIVE) Two-Phase Interleaved CCM PFC Controller

 

Description

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.

Features

  • 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

WEBENCH ® Designer UCC28070

AC Frequency  60 Hz  50 Hz
  Min   Max Range
VinRMS -  V 63.64 to 339.41V
Vout  V 115 to 420V
Iout  A ≤ 86.96A
Ambient Temp   °C -40 to 125 °C

Parametrics

Compare all products in Power factor correction (PFC) controllers Email Download to Excel
Part number Order Device type Control method UVLO thresholds on/off (V) Operating supply (Max) (V) Operating supply current (mA) Operating temperature range (C) Features Package Group Package size: mm2:W x L (PKG)
UCC28070 Order now Interleaved PFC     CCM     10.2/9.2     21     20     -40 to 125
-40 to 85    
> 750W Applications
Average Current Mode
Interleaved
OVP
Programable switching frequency    
SOIC | 20
TSSOP | 20    
20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
UCC28050 Samples not available Single-phase PFC     TM     15.8/9.7     18     4     -40 to 85     OVP
Supports Flyback
Transition Mode Control    
PDIP | 8
SOIC | 8    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
UCC28051 Order now Single-phase PFC     TM     12.5/9.7     18     4     -40 to 105     OVP
Supports Flyback
Transition Mode Control    
PDIP | 8
SOIC | 8    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
UCC28056 Order now Single-phase PFC     TM     10.65/8.85     34     2.2     -40 to 125     < 150W Applications
Audible noise minimization circuitry
Low Power
OVP
Soft Start
Transition Mode Control    
SOT-23 | 6     6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)    
UCC28064A Order now Interleaved PFC     TM     10.35 / 9.6     21     5     -40 to 125     < 150W Applications
> 750W Applications
Burst mode for no load regualtion
Feed-forward correction for near unity PF
Interleaved
Low Power
Soft Start    
SOIC | 16     16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)    
UCC28180 Order now Single-phase PFC     CCM     11.4/9.7     21     7     -40 to 125     Audible noise minimization circuitry
Burst mode for no load regualtion
No AC line sensing
Programable switching frequency    
SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
UCC38050 Samples not available Single-phase PFC     TM     15.8/9.7     18     4     0 to 70     OVP
Transition Mode Control    
PDIP | 8
SOIC | 8    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
UCC38051 Samples not available Single-phase PFC     TM     12.5/9.7     18     4     0 to 70     OVP
Transition Mode Control    
SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)