Power Factor Correction

Motor Control Product Solutions

Power Factor Correction (PFC) is used in motor control power management. PFC requirements vary from country to country; typically in appliances with power requirements greater than 75Watts.   Its purpose is to minimize inefficient and costly reactive loads on the power grid.  Alternatively, implementing a PFC front-end in a product can maximize the available power that can be drawn from a standard outlet. PFC does this by making the appliance look purely resistive; e.g. no phase difference between the voltage (Vac) and current (Iac) from the grid.  PFC also minimizes any transients/harmonics that can feed back into the home/building electrical grid and disrupt the power source to other appliances.  The result:  PFC saves money by saving electrical energy.

Fairchild Semiconductor offers both integrated and discrete PFC solutions:

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PFC SPM Products

Features

Optimized IGBTs, diodes, and driving IC
Good thermal resistance due to Direct-Bond Copper (DBC) substrate of package
SPM® package meets the basic creepage and clearance spacing
Isolation voltage of 2500Vrms [@ 1min]
UL certified No. E209204

 

Fairchild Advantages:

PFC SPM® products use the same advantageous DBC (Direct Bond Copper) or ceramic substrate packaging used by the Motion SPM® products. SPM packaging enables high voltage motor drivers; and now enables PFC for high voltage motor control.
Integrated into the PFC SPM®; product is a front-end rectifier circuit, partial switching converter circuit, and power factor correction circuit which can be controlled by an external controller; e.g. Fairchild's BLDC/PMSM Controller, third-party micro-controller (MCU), DSP controller, or FPGA (Field Programmable Gate Array).


Because the PFC SPM® packages are the same mechanical dimension as Motion SPM® packages;
both can be installed on the same heat sink. Enabling easy assembly and increased productivity.


Comparisons of Integrated PFC SPM®

TopologyPassive PFCInterleavedBoostBridgeless
ApplicationMotor Control PFC Passive PFCMotor Control PFC InterleavedMotor Control PFC BoostMotor Control PFC Bridgeless
EMI★★★★★
Inductor Cost★★★★★★★
Capacitor Cost★★★★★★★
Fairchild SolutionYesYesYesYes
Switching Frequency-

Over 20KHz

20KHz

20KHz
PF★★★★★★
IGBT/Sensing Quantity0212
Free Wheeling Diode Quantity0212
Bridge Diode Quantity4442
★★★ Best ★★ Better ★ Good ☆ Fair

 


Block Diagrams

Motor Control PFC Interleaved PFC SPM 95x55
Interleaved PFC SPM: is for 2-phase interleaved PFC application. Featuring: Single phase rectifier for AC input; 2-phase interleaved PFC; Control IC for gate driving and protection; NTC thermistor; UL Certified No. E209024

 


Motor Control Boost PFC SPM 44x26.8
Boost PFC SPM: is for 1-phase boost PFC application. Featuring: Single phase rectifier for AC input; 1-phase boost PFC; Control IC for gate driving and protection; NTC thermistor; UL Certified No. E209024

 


Motor Control Bridgeless PFC SPM 44x26.8
Bridgeless PFC SPM: is for 2-phase bridgeless PFC application. Featuring: 2-phase bridgeless PFC; Control IC for gate driving and protection; NTC thermistor; Shunt resistor for current sensing; UL Certified No. E209024

 


Ordering Codes:

Click on thumbnail picture to enlarge.
PFC-SPM3 Module Ordering Codes
PFC-SPM3 Module Ordering Codes

 

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PFC Controller IC's for Discrete PFC Implementations

Fairchild Semiconductor has a wide breadth of discrete PFC controllers; e.g. Continuous Conduction Mode (CCM), Critical / Boundary Conduction Mode (CrCM / BCM), and Interleaved. As an example, the features of our Interleaved Dual BCM PFC Controllers include:

Interleaved Dual BCM PFC controllers:

Efficiency
Interleaved Lower > Turn-off Losses
Valley Switching > Minimize COSS losses
Strong gate drivers > reduce switching losses
Boost-follower ("tracking boost") possible
Protection
Closed-loop soft-start w/ Prog. Ramp Time
Power and Current Limit per Channel
Input Voltage Feed-forward
Secondary Latched OVP
Input Brown-out Protection
Line OVP
Internal maximum fSW clamp limit
Ease of Design & Solution Size
Easy Valley Detection Implementation
Easy Loop Compensation (constant BW and PWM Gain)
Integrated +2.0A/-1.0A Gate Drivers
Works with DC, 50Hz to 400Hz AC Inputs

 

Motor Control View Interleaved PFC Controllers Parametric Data
Motor Control View CCM PFC Parametric Data
CRCM BCM PFC

Support & Tools

Motion Control Design Tool

This design tool provides motion control design engineers with efficient means of calculating the power losses and temperature rise in Fairchild motor drive SPM modules. The tool addresses three-phase inverter sinusoidal modulation for variable speed drive applications powering permanent magnet synchronous motor (PMSM) and AC induction motors.

Application Notes

Application NoteProduct/TopicDescription
AN-60261N4148
FAN7527B
FAN7529
FDPF20N50
FQPF13N50C
FQPF13N50CF
FQPF8N60C
FQPF9N50C
FQPF9N50CF
Show More ...
Design of Power Factor Correction Circuit Using FAN7529
AN-420341N4148
1N4148WS
1N4148WT
2N3904
2N3906
ML4824-1
Synchronizing the ML4824 to Wide Frequency Ranges
AN-60271N4148
FAN7527B
FAN7529
FAN7530
FDPF20N50
FQA28N50
SB140
Design of Power Factor Correction Circuit Using FAN7530
AN-41211N4148
FAN7527B
FQA13N50CF
FQPF9N50C
FQPF9N50CF
Design of Power Factor Correction Circuit Using FAN7527B
AN-41071N4148
FAN7527B
FQA13N50CF
Design of Power Factor Correction Using FAN7527
AN-60041N4747A
1N5401
1N5406
2N3904
2N3906
FAN4810
FDH44N50
FGH50N6S2D
FQA13N50CF
FQA19N60
Show More ...
500W Power-Factor-Corrected (PFC) Converter Design with FAN4810
AN-60321N5401
1N5406
FAN4800A
FAN4800AS
FAN4800AU
FAN4800CU
FAN4801S
FAN4802S
FQPF9N50C
FQPF9N50CF
Show More ...
FAN4800 Combo Controller Applications
AN-6008FAN4810
FAN4810 Design Tools
AN-42047FAN4810
FAN7527B
Power Factor Correction (PFC) Basics
AN-9091FBA42060
FPAB20BH60B
FPAB30BH60
FPAB30BH60B
Boost PFC Inductor Design Guide for PFC SPMв Series
AN-9090FPAB20BH60B
FPAB30BH60
FPAB30BH60B
PFC SPM® 3 Series Ver. 2 for Boost PFC Topology
AN-9041FPDB30PH60
FPDB40PH60B
FPDB50PH60
FPDB60PH60B
PFCM Design Guide with Analog PFC IC
AN-42009ML4824-1
ML4824 Combo Controller Applications
AN-42045ML4824-1
ML4824, A Novel Method for an Off-Line PFC-PWM Combo Controller

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