FAN7930C Fairchild Semiconductor, FAN7930C Datasheet

no-image

FAN7930C

Manufacturer Part Number
FAN7930C
Description
The FAN7930C is an active power factor correction (PFC) controller for boost PFC applications that operate in critical conduction mode (CRM)
Manufacturer
Fairchild Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
FAN7930C
Manufacturer:
ON
Quantity:
28 000
Part Number:
FAN7930CM
Manufacturer:
Fairchild/ON Semiconductor
Quantity:
364
Part Number:
FAN7930CM
Manufacturer:
ON Semiconductor
Quantity:
200
Part Number:
FAN7930CMX
Manufacturer:
FSC
Quantity:
1 900
Part Number:
FAN7930CMX
Manufacturer:
Fairchild/ON Semiconductor
Quantity:
40 996
Part Number:
FAN7930CMX
Manufacturer:
ON Semiconductor
Quantity:
3 780
Part Number:
FAN7930CMX
Manufacturer:
ON
Quantity:
15 000
Part Number:
FAN7930CMX
Manufacturer:
FAIRCHILD/仙童
Quantity:
100
Part Number:
FAN7930CMX-G
Manufacturer:
ON Semiconductor
Quantity:
467
© 2010 Fairchild Semiconductor Corporation
FAN7930C • Rev. 1.0.1
FAN7930C
Critical Conduction Mode PFC Controller
Features
Applications
Ordering Information
Part Number
FAN7930CMX
FAN7930CM
PFC-Ready Signal
Input Voltage Absent Detection
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 (ZCD)
150μs Internal Startup Timer
MOSFET Over-Current Protection (OCP)
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
Adapter
Ballast
LCD TV, CRT TV
SMPS
Temperature Range
-40 to +125°C
Operating
Top Mark
FAN7930C
8-Lead Small Outline Package (SOP)
Description
The FAN7930C 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.
FAN7930C provides over-voltage protection (OVP),
open-feedback
(OCP), input-voltage-absent detection, and under-
voltage lockout protection (UVLO). The PFC-ready pin
can be used to trigger other power stages when PFC
output voltage reaches the proper level with hysteresis.
The FAN7930C 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 Consideration for Boundary
Conduction Mode PFC Using FAN7930
Package
protection,
over-current
Tape & Reel
July 2011
Packing
www.fairchildsemi.com
Method
Rail
protection

Related parts for FAN7930C

FAN7930C Summary of contents

Page 1

... PFC output voltage reaches the proper level with hysteresis. The FAN7930C 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 ...

Page 2

... Application Diagram Internal Block Diagram © 2010 Fairchild Semiconductor Corporation FAN7930C • 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 FAN7930C • Rev. 1.0.1 Figure 3. Pin Configuration (Top View) Description 3 www.fairchildsemi.com ...

Page 4

... Thermal Impedance Symbol  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 FAN7930C • Rev. 1.0.1 Parameter > <-0. (1) Human Body Model, JESD22-A114 ...

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 FAN7930C • Rev. 1.0.1 Conditions V Increasing CC V Decreasing CC I =20mA -0.2V CC START Output Not Switching ...

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 FAN7930C • Rev. 1.0.1 Conditions (4) I =3mA DET I = -3mA DET V =1V~5V ZCD (4) T =25°C ...

Page 7

... None V -Absent Detection None IN Soft-Start and Overshoot None Prevention THD Optimizer External TSD None Comparison between FAN7930 and FAN7930C Function FAN7930 RDY Threshold 2.240V RDY Hysteresis 0.600V Control Range None Compensation © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 FAN7930C FAN7930C Advantages  ...

Page 8

... Typical Performance Characteristics Figure 4. Voltage Feedback Input Threshold 1 (V vs. T Figure 6. Stop Threshold Voltage (V Figure 8. Operating Supply Current (I © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 ) Figure 5. Start Threshold Voltage (V REF1 A ) 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 FAN7930C • Rev. 1.0.1 ) Figure 11. Maximum On-Time Program 1 (t EAZ A ) Figure 13. Current-Sense Input Threshold Voltage ON,MAX2 ...

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 FAN7930C • 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 390V and V supply voltage is 15V © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0 PFC CC exceeds V , 20mA CC Z Figure 24. 3. RDY Output: When the INV voltage is higher than 2 ...

Page 12

... When the power switch turns on, negative voltage is induced at the auxiliary winding due to the opposite winding direction (see Equation 1). Positive voltage is induced (see Equation 2) when the power switch turns off. © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 T AUX    ...

Page 13

... Figure 32. Unlike a conventional voltage-mode PWM controller, FAN7930C turns on the MOSFET at the falling edge of ZCD signal. On-instance is determined by the external signal and the turn-on time lasts until the error amplifier output (V ) and sawtooth waveform meet ...

Page 14

... This operation is better when soft-start time is very long. However, too much startup time enlarges the output voltage building time at light load. FAN7930C has overshoot avoidance at startup. During startup, the feedback loop is controlled by an internal proportional ...

Page 15

... Figure 39. To improve this, lengthened turn-on time near the zero cross region is a well-known technique, though the method may vary and may be proprietary. FAN7930C optimizes this by sourcing current through the ZCD pin. Auxiliary winding voltage becomes negative when the MOSFET turns on and is proportional to input voltage. ...

Page 16

... An internal RC filter of 40kΩ and 8pF is included to filter switching noise. 11. Gate Driver Output: FAN7930C contains a single totem-pole output stage designed for a direct drive of the power MOSFET. The drive output is capable +500/-800mA peak current with a typical rise and fall ...

Page 17

... The 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 FAN7930C • 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

... C114 C115 ,2.2n ,2. C101, 220nF R101,1M- J ZNR101 ,10D471 Circuit for V Circuit for V © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 Input Voltage Device Range 90-265V AC power can be supplied through Zero Current Detect (ZCD) CC Optional D106 600V 3A 230mH, 49:6 V AUX R103, 10k,1W ...

Page 19

... Insulation: Polyester Tape t = 0.025mm, 3 Layers N 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 FAN7930C • Rev. 1.0.1 Figure 46. Transformer Schematic Diagram Wire Turns 0.1φ× → 4 0.3φ 6 Pin Specification 9, 10 → ...

Page 20

... C104 12nF/50V C105 100nF/50V 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 FAN7930C • 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 D106 5W 1/4W IC101 ...

Page 21

... 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’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0 1.75 4 ...

Page 22

... Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 22 www.fairchildsemi.com ...

Related keywords