Power Factor Correction

Power factor correction ICs (integrated circuits) are devices designed to improve the efficiency of an electronic circuit that contain other devices with lower power factor. Power factor is the measurement of the efficiency of input power. Power factor correction (PFC) is designed to improve the power quality by improving this efficiency. They feature capacitors or inductors which are used to counteract the inefficiencies of motors and machines.

How is it power factor calculated?

Power factor is the Real Power minus Reactive Power. Real power is the power required to carry out the task. Reactive power is the excess power that is used, but is not required by the task. The goal is for power factor to be 100% in its efficiency, or 1pf. Power factor can be calculated by Active (or true) power divided by Apparent power. Reactive operates at a right angle to True power.

Why use power factor correction ICs?

Power factor correction can be used in many applications to help financially. This is achieved through reducing power consumption or reducing the unnecessary Reactive Power.

Where is PFC used?

  • Computers
  • Power supplies
  • Lighting
  • Induction welders
  • Electrical motors

...
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Description Price Maximum Switching Frequency Start-up Supply Current IC Type Maximum Source Current Maximum Sink Current Maximum Supply Current Zero Power Detection Mounting Type Package Type Pin Count Dimensions Height Length Maximum Operating Supply Voltage
RS Stock No. 920-8913
Mfr. Part No.L4981AD
SGD4.023
Each (In a Tube of 40)
units
115 kHz 0.3mA Power Factor Controller 10mA 20000µA 16 mA - Surface Mount SOIC 20 13 x 7.6 x 2.35mm 2.35mm 13mm 19.5 V
RS Stock No. 714-7844
Mfr. Part No.L4981AD
SGD5.17
Each
units
115 kHz 0.3mA Power Factor Controller 10mA 20000µA 16 mA - Surface Mount SOIC 20 13 x 7.6 x 2.35mm 2.35mm 13mm 19.5 V
RS Stock No. 620-0767
Mfr. Part No.UC3854N
SGD6.468
Each (In a Pack of 5)
units
118 kHz 1.5mA Power Factor Pre-Regulator Circuit 14µA - 10 mA Yes Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 35 V
RS Stock No. 121-8962
Mfr. Part No.UC3854N
SGD5.358
Each (In a Tube of 25)
units
118 kHz 1.5mA Power Factor Pre-Regulator Circuit 14µA - 10 mA Yes Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 35 V
RS Stock No. 121-8960
Mfr. Part No.UC3854AN
SGD6.867
Each (In a Tube of 25)
units
115 kHz 0.3mA Power Factor Pre-Regulator Circuit 14µA - 18 mA Yes Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 20 V
RS Stock No. 661-5550
Mfr. Part No.UCC28070PW
SGD6.45
Each
units
10 → 300 kHz 20mA Power Factor Controller -0.03mA 30µA 20 mA Yes Surface Mount TSSOP 20 6.5 x 4.4 x 1.15mm 1.15mm 6.5mm 21 V
RS Stock No. 168-5787
Mfr. Part No.L4981BD
SGD3.616
Each (In a Tube of 40)
units
115 kHz 0.3mA Power Factor Controller 10mA 20000µA 16 mA - Surface Mount SOIC 20 13 x 7.6 x 2.35mm 2.35mm 13mm 19.5 V
RS Stock No. 379-987
Mfr. Part No.L4981BD
SGD4.60
Each
units
115 kHz 0.3mA Power Factor Controller 10mA 20000µA 16 mA - Surface Mount SOIC 20 13 x 7.6 x 2.35mm 2.35mm 13mm 19.5 V
RS Stock No. 620-0745
Mfr. Part No.UC3854AN
SGD8.096
Each (In a Pack of 5)
units
115 kHz 0.3mA Power Factor Pre-Regulator Circuit 14µA - 18 mA Yes Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 20 V
RS Stock No. 922-3473
Mfr. Part No.UCC28070PW
SGD5.712
Each (In a Tube of 70)
units
- - - - - - - - - - - - - -
RS Stock No. 165-7479
Mfr. Part No.L6562ADTR
SGD0.672
Each (On a Reel of 2500)
units
- 0.03mA Power Factor Controller -5mA 4500µA 0.06 mA Yes Surface Mount SOIC 8 5 x 4 x 1.25mm 1.25mm 5mm 22.5 V
RS Stock No. 145-3378
Mfr. Part No.MC33368DG
SGD2.709
Each (In a Tube of 48)
units
50 kHz 25mA Power Factor Controller 30µA 30µA 20 mA Yes Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 16 V
RS Stock No. 809-5021
Mfr. Part No.FAN6961SZ
SGD1.03
Each (In a Pack of 10)
units
60 kHz 20µA Power Factor Controller 800µA 20µA 6 mA Yes Surface Mount SOP 8 5 x 4 x 1.5mm 1.5mm 5mm 30 V
RS Stock No. 802-3171
Mfr. Part No.NCP1608BDR2G
SGD0.936
Each (In a Pack of 20)
units
70 kHz 35µA Power Factor Controller 500mA 800mA 20 mA Yes Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 20 V
RS Stock No. 380-012
Mfr. Part No.L6562D
SGD0.986
Each (In a Pack of 10)
units
- 0.04mA Power Factor Controller 10mA 10000µA 16 mA - Surface Mount SOIC 8 5 x 4 x 1.25mm 1.25mm 5mm 22 V
RS Stock No. 786-8727
Mfr. Part No.MC33368DG
SGD3.925
Each (In a Pack of 2)
units
50 kHz 25mA Power Factor Controller 30µA 30µA 20 mA Yes Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 16 V
RS Stock No. 831-2718
Mfr. Part No.IR1155STRPBF
BrandInfineon
SGD2.41
Each (In a Pack of 2)
units
200 kHz 175µA Power Factor Controller 90µA -20µA 13 mA - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 19 V
RS Stock No. 162-8866
Mfr. Part No.UCC29910APW
SGD4.57
Each (In a Tube of 90)
units
106 kHz - Power Factor Controller - - 8 mA - Surface Mount TSSOP 14 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 3.6 V
RS Stock No. 166-2386
Mfr. Part No.FAN6961SZ
SGD0.421
Each (On a Reel of 2500)
units
60 kHz 20µA Power Factor Controller 800µA 20µA 6 mA Yes Surface Mount SOP 8 5 x 4 x 1.5mm 1.5mm 5mm 30 V
RS Stock No. 380-040
Mfr. Part No.L6563
SGD1.712
Each (In a Pack of 10)
units
- 0.05mA Power Factor Controller -5mA 4500µA 0.09 mA Yes Surface Mount SOIC 14 8.75 x 4 x 1.65mm 1.65mm 8.75mm 22 V