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. 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. 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. 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. 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. 922-3473
Mfr. Part No.UCC28070PW
SGD5.712
Each (In a Tube of 70)
units
- - - - - - - - - - - - - -
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. 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. 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. 168-5788
Mfr. Part No.L6562D
SGD0.705
Each (In a Tube of 100)
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. 145-4462
Mfr. Part No.FAN9672Q
SGD4.81
Each (In a Tray of 250)
units
40 kHz 80µA Power Factor Controller 50µA -40µA, -35 μA 7 mA Yes Surface Mount LQFP 32 9 x 7 x 1.45mm 1.45mm 9mm 30 V
RS Stock No. 162-6057
Mfr. Part No.UC3855BDW
SGD16.445
Each (In a Tube of 25)
units
230 kHz 0.15mA Power Factor Pre-Regulator Circuit - 1.5mA 25 mA Yes Surface Mount SOIC 20 12.8 x 7.52 x 2.35mm 2.35mm 12.8mm -
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. 686-5005
Mfr. Part No.L6562DTR
SGD1.062
Each (In a Pack of 5)
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. 865-1224
Mfr. Part No.FAN9672Q
SGD7.55
Each (In a Pack of 2)
units
40 kHz 80µA Power Factor Controller 50µA -40µA, -35 μA 7 mA Yes Surface Mount LQFP 32 9 x 7 x 1.45mm 1.45mm 9mm 30 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. 166-1148
Mfr. Part No.TDA4862GGEGXUMA2
BrandInfineon
SGD0.593
Each (On a Reel of 2500)
units
- 4 to 6mA Power Factor Controller -12mA 4mA 8 mA Yes Surface Mount DSO 8 5 x 4 x 1.45mm 1.45mm 5mm -
RS Stock No. 165-5740
Mfr. Part No.IR1155STRPBF
BrandInfineon
SGD1.323
Each (On a Reel of 2500)
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