IC POWER FACTOR CORR CTRLR 8SOIC

FAN7930M

Manufacturer Part NumberFAN7930M
DescriptionIC POWER FACTOR CORR CTRLR 8SOIC
ManufacturerFairchild Semiconductor
FAN7930M datasheet
 

Specifications of FAN7930M

ModeCritical Conduction (CRM)Current - Startup120µA
Voltage - Supply13 V ~ 20 VOperating Temperature-40°C ~ 125°C
Mounting TypeSurface MountPackage / Case8-SOIC (3.9mm Width)
Switching Frequency300 KHzMaximum Power Dissipation195 W
Maximum Operating Temperature+ 125 CMounting StyleSMD/SMT
Minimum Operating Temperature- 40 CLead Free Status / RoHS StatusLead free / RoHS Compliant
Frequency - Switching-  
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FAN7930
Critical Conduction Mode PFC Controller
Features
PFC Ready Signal
Input Voltage Absent Detection Circuit
Maximum Switching Frequency Limitation
Internal Soft-Start and Startup without Overshoot
Internal Total Harmonic Distortion (THD) Optimizer
Precise Adjustable Output Over-Voltage Protection
Open-Feedback Protection and Disable Function
Zero Current Detector
150μs Internal Startup Timer
MOSFET Over-Current Protection
Under-Voltage Lockout with 3.5V Hysteresis
Low Startup and Operating Current
Totem-Pole Output with High State Clamp
+500/-800mA Peak Gate Drive Current
8-Pin SOP
Applications
Adapter
Ballast
LCD TV, CRT TV
SMPS
Ordering Information
Operating
Part Number
Temperature
Range
FAN7930M
-40 to +125°C
FAN7930MX
© 2010 Fairchild Semiconductor Corporation
FAN7930 • Rev. 1.0.1
Description
The FAN7930 is an active power factor correction (PFC)
controller for boost PFC applications that operate in
critical conduction mode (CRM). It uses a voltage-mode
PWM that compares an internal ramp signal with the
error amplifier output to generate a MOSFET turn-off
signal. Because the voltage-mode CRM PFC controller
does not need rectified AC line voltage information, it
saves the power loss of an input voltage sensing network
necessary for a current-mode CRM PFC controller.
FAN7930
provides
feedback protection, over-current protection, input-
voltage-absent detection, and under-voltage lockout
protection. The PFC-ready pin can be used to trigger
other power stages when PFC output voltage reaches
the proper level with hysteresis. The FAN7930 can be
disabled if the INV pin voltage is lower than 0.45V and
the operating current decreases to a very low level.
Using a new variable on-time control method, THD is
lower than the conventional CRM boost PFC ICs.
Related Resources
AN-8035
Design
Conduction Mode PFC Using FAN7930
Top Mark
Package
FAN7930
8-Lead Small Outline Package (SOP)
April 2010
over-voltage
protection,
open-
Consideration
for
Boundary
Packing
Method
Rail
Tape & Reel
www.fairchildsemi.com

FAN7930M Summary of contents

  • Page 1

    ... Operating Part Number Temperature Range FAN7930M -40 to +125°C FAN7930MX © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Description The FAN7930 is an active power factor correction (PFC) controller for boost PFC applications that operate in critical conduction mode (CRM). It uses a voltage-mode ...

  • Page 2

    ... Application Diagram Internal Block Diagram © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Figure 1. Typical Boost PFC Application Figure 2. Functional Block Diagram 2 www.fairchildsemi.com ...

  • Page 3

    ... For proper operation, the stray inductance in the gate driving path must be minimized This is the IC supply pin. IC current and MOSFET drive current are supplied using this pin. CC © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Figure 3. Pin Configuration (Top View) 3 www.fairchildsemi.com ...

  • Page 4

    ... In case of DC input, acceptable input range is -0.3V~6V: within 100ns -10V~6V is acceptable, but electrical specifications are not guaranteed during such a short time. Thermal Impedance Symbol Θ Thermal Resistance, Junction-to-Ambient JA Note: 3. Regarding the test environment and PCB type, please refer to JESD51-2 and JESD51-10. © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Parameter > <-0. (1) ...

  • Page 5

    ... Maximum On-Time Programming 1 T ON,MAX1 t Maximum On-Time Programming 2 ON,MAX2 Current-Sense Section Current Sense Input Threshold V CS Voltage Limit I Input Bias Current CS,BS t Current Sense Delay to Output CS,D © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Conditions V Increasing CC V Decreasing CC I =20mA -0.2V CC ...

  • Page 6

    ... Enable Threshold Voltage EN HY Enable Hysteresis EN T Thermal Shutdown Temperature SD T Hysteresis Temperature of TSD HYS Note: 4. These parameters, although guaranteed by design, are not production tested. © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Conditions (4) I =3mA DET I = -3mA DET V =1V~5V ZCD (4) T =25° ...

  • Page 7

    ... Detection Soft-Start and None Overshoot-less THD Optimizer External TSD None © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 FAN7930 FAN7930 Advantages No External Circuit for PFC Output UVLO Reduction of Power Loss and BOM Cost Caused Integrated by PFC Out UVLO Circuit Open-Drain Pin has Versatile Uses ...

  • Page 8

    ... Typical Performance Characteristics Figure 4. Voltage Feedback Input Threshold vs. T REF1 Figure 6. Stop Threshold Voltage (V Figure 8. Operating Supply Current (I © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Figure 5. Start Threshold Voltage ( vs. T Figure 7. Startup Supply Current (I STOP A ) vs. T Figure 9. Output Upper Clamp Voltage (V ...

  • Page 9

    ... Typical Performance Characteristics Figure 10. Zero Duty Cycle Output Voltage (V vs. T Figure 12. Maximum On-Time Program 2 (t vs. T Figure 14. Input High Clamp Voltage (V © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 ) Figure 11. Maximum On-Time Program 1 (t EAZ A ) Figure 13. Current Sense Input Threshold Voltage ...

  • Page 10

    ... Typical Performance Characteristics Figure 16. Output Voltage High (V Figure 18. Restart Timer Delay (t Figure 20. Output Saturation Voltage (V vs. T © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 ) vs. T Figure 17. Output Voltage Low ( vs. T Figure 19. Output Ready Voltage (V RST A ) Figure 21. OVP Threshold Voltage (V RDY,SAT ...

  • Page 11

    ... IC is disabled. Figure 24 is the timing chart of the internal circuit near the INV pin when rated PFC output voltage is assumed at 390V and V DC 15V. © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0 PFC CC exceeds V , 20mA CC Z Figure 23 ...

  • Page 12

    ... To check the boost inductor current zero instance, auxiliary winding voltage is used. When boost inductor current becomes zero, there is a resonance between boost inductor and all capacitors at MOSFET drain pin, © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 including C of the MOSFET; an external capacitor at ...

  • Page 13

    ... When COMP load is heavy, output voltage decreases, scaled output decreases, COMP voltage increases to compensate low © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 output, turn-on time lengthens to give more inductor turn-on time, and increased inductor current raises the output voltage ...

  • Page 14

    ... This operation is better when soft-start time is very long. However, too long startup time enlarges the output © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 voltage building time at light load. FAN7930 has “overshoot-less” control at startup. During startup, the ...

  • Page 15

    ... Theoretically, the fixed-current source and the capacitor at sawtooth generator decide the maximum turn-on time when no current is sourcing at ZCD clamp circuit and available turn-on time gets shorter proportional to the ZCD sourcing current. © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 I NEGATIVE ON ...

  • Page 16

    ... AC input is applied again and applies less voltage and current stress on startup. Figure 40. Operation without Input Voltage Absent Circuit © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Figure 41. Operation with Input Voltage Absent Circuit 10. Current Sense: The MOSFET current is sensed using an external sensing resistor for the over-current protection ...

  • Page 17

    ... Switching current sense path should not share with another path to avoid interference. Some additional components may be needed to reduce the noise level applied to the CS pin. © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0 stabilizing capacitor for V close as possible to the V CC difficult, place the SMD capacitor as close to the corresponding pins as possible ...

  • Page 18

    ... However, too-high resistance makes the node easily affected by noise. Thus values need to strike a balance between power consumption and noise immunity. Quick charge diode (D106) can be eliminated. Without D106, system operation is normal due to the controller’s highly reliable protection features. 1. Schematic © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Input Voltage Device Range ...

  • Page 19

    ... AUX Top Insulation: Polyester Tape t = 0.025mm, 4 Layers 4. Electrical Characteristics Inductance 5. Core & Bobbin Core: EER3124, Samhwa (PL-7) (Ae=97.9mm Bobbin: EER3124 © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Transformer Schematic Diagram of FAN7930 Wire Turns 0.1φ× → 4 0.3φ ...

  • Page 20

    ... C107 33µF/50V C108 220nF/50V C109 47nF/50V C110 1nF/50V C112 47nF/50V C111 220µF/450V C114 2.2nF/450V C115 2.2nF/450V © 2010 Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 Note Part # 1W Q101 1/2W 1W D101 1/4W D102 1/4W D103 1/4W D104 1/4W D105 1/4W ...

  • Page 21

    ... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...

  • Page 22

    ... Fairchild Semiconductor Corporation FAN7930 • Rev. 1.0.1 22 www.fairchildsemi.com ...