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Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s
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April 2013
© 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7527B • Rev. 1.0.3
FAN7527B — Power Factor Correction Controller
FAN7527B
Power Factor Correction Controller
Features
Internal Startup Timer
Internal R/C Filter Eliminates the Need for External
R/C Filter
Precise Adjustable Output Over-Voltage Protection
Zero Current Detector
One Quadrant Multiplier
Trimmed 1.5% Internal Band Gap Reference
Under-Voltage Lockout with 3 V of Hysteresis
Totem-Pole Output with High-State Clamp
Low Startup and Operating Current
8-Pin SOP or 8-Pin DIP
Applications
Electronic Ballast
SMPS
Description
The FAN7527B provides simple and high-performance
active Power Factor Correction (PFC). The FAN7527B
is optimized for electronic ballasts and low–power, high-
density power supplies that require minimum board size,
reduced external components, and low power
dissipation. Because the R/C filter is included in the
current-sense block, an external R/C filter is not
necessary. Special circuitry prevents no-load runaway
conditions. Regardless of the supply voltage, the output
drive clamping circuit limits the overshoot of the power
MOSFET gate drive, which improves system reliability.
Ordering Information
Part Number
Operating
Temperature Range
Package
Packing Method
FAN7527BMX
-25 to +125°C
8-Lead, Small Outline Package (SOP)
Tape and Reel
FAN7527BN
-25 to +125°C
8-Lead, Dual Inline Package (DIP)
Tube
© 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7527B • Rev. 1.0.3 2
FAN7527B — Power Factor Correction Controller
Block Diagram
Figure 1. Block Diagram
© 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7527B • Rev. 1.0.3 3
FAN7527B — Power Factor Correction Controller
Pin Configuration
Figure 2. Pin Configuration
Pin Definitions
Name
Description
INV
Inverting input of the error amplifier. The output of the boost converter should be resistively
divided to 2.5 V and connected to this pin.
EA_OUT
Output of the error amplifier. Feedback compensation network is placed between this pin and
the INV pin.
MULT
Input to the multiplier stage. The full-wave rectified AC voltage is divided to less than 2 V and is
connected to this pin.
CS
Input of the PWM comparator. The MOSFET current is sensed by a resistor and the resulting
voltage is applied to this pin. An internal R/C filter is included to reject high-frequency noise.
Idet
Zero Current Detection (ZCD) input.
GND
Ground
OUT
Gate driver output. Push-pull output stage is able to drive the power MOSFET with a peak
current of 500 mA.
VCC
Supply voltage of driver and control circuits.
© 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7527B • Rev. 1.0.3 4
FAN7527B — Power Factor Correction Controller
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Min.
Max.
Unit
VCC
Supply Voltage
30
V
IOH, IOL
Peak Drive Output Current
±500
mA
ICLAMP
Driver Output Clamping Diodes VO > VCC or VO<-0.3 V
±10
mA
IDET
Detector Clamping Diodes
±10
mA
VIN
Error Amplifier Multiplier and Comparator Input Voltages
-0.3
6.0
V
TJ
Operation Junction Temperature
+150
°C
TOPR
Operating Temperature Range
-25
+125
°C
TSTG
Storage Temperature Range
-65
+150
°C
PD
Power Dissipation
8-SOP
0.8
W
8-DIP
1.1
W
JA
Thermal Resistance Junction-Ambient
8-SOP
150
°C/W
8-DIP
110
°C/W
Temperature Characteristics
-25°C ≤ TA ≤ 125°C.
Symbol
Parameter
Min.
Typ.
Max.
Unit
VREF
Temperature Stability Reference Voltage (VREF)
20
mV
K/T
Temperature Stability for Multiplier Gain (K)
-0.2
% / °C
© 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7527B • Rev. 1.0.3 5
FAN7527B — Power Factor Correction Controller
Electrical Characteristics
VCC= 14 V, -25°C ≤ TA ≤ 125°C, unless otherwise stated.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Under-Voltage Lockout
Vth(st)
Start Threshold Voltage
VCC Increasing
10.5
11.5
12.5
V
HY(st)
UVLO Hysteresis
2
3
4
V
Supply Current Section
IST
Startup Supply Current
VCC = Vth(st) -0.2 V
10
60
100
µA
ICC
Operating Supply Current
Output Not Switching
3
6
mA
ICC(OVP)
Operating Current at OVP
VINV = 3 V
1.7
4.0
mA
IDCC
Dynamic Operating Supply Current
50 kHz, CI = 1 nF
4
8
mA
Error Amplifier Section
VREF
Voltage Feedback Input Threshold
IREF = 0 mA, TA = 25C
2.465
2.500
2.535
V
25°C ≤ TA ≤ 125°C
2.440
2.500
2.560
VFEF1
Line Regulation
14 V ≤ VCC ≤ 25 V
0.1
10.0
mV
VFEF3
Temperature Stability of VREF(1)
-25°C ≤ TA ≤ 125°C
20
mV
Ib(ea)
Input Bias Current
-0.5
0.5
µA
ISOURCE
Output Source Current
VM2 = 4 V
-2
-4
mA
ISINK
Output Sink Current
VM2 = 4 V
2
4
mA
VEAO(H)
Output Upper Clamp Voltage(1)
ISOURCE = 0.1 mA
6
V
VEAO(L)
Output Lower Clamp Voltage(1)
ISINK = 0.1 mA
2.25
V
GV
Large Signal Open-Loop Gain(1)
60
80
dB
PSRR
Power Supply Rejection Ratio(1)
14 V ≤ VCC ≤ 25 V
60
80
dB
GBW
Unity Gain Bandwidth(1)
1
MHZ
SR
Slew Rate(1)
0.6
V/µs
Multiplier Section
Ib(m)
Input Bias Current (Pin 3)
-0.5
0.5
µA
VM1
M1 Input Voltage Range (Pin 3)
3.8
V
VM2
M2 Input Voltage Range (Pin 2)
VREF
VREF+2.5
V
K
Multiplier Gain(1)
VM1 = 1 V, VM2 = 3.5 V
0.36
0.44
0.52
1 / V
VOMAX(m)
Maximum Multiplier Output Voltage
VINV =0 V, VM1 = 4 V
1.65
1.80
1.95
V
K/T
Temperature Stability of K(1)
-25 ≤ TA ≤ 125°C
-0.2
% / °C
Current Sense Section
VIO(CS)
Input Offset Voltage(1)
VM1 = 0 V, VM2 = 2.2 V
-10
3
10
mV
Ib(CS)
Input Bias Current
0 V ≤ VCS ≤ 1.7 V
-1.0
-0.1
1.0
µA
tD(CS)
Current Sense Delay to Output(1)
200
500
ns
Continued on the following page…
© 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7527B • Rev. 1.0.3 6
FAN7527B — Power Factor Correction Controller
Electrical Characteristics (Continued)
VCC= 14 V, -25°C ≤ TA ≤ 125°C, unless otherwise stated.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Zero Current Detect Section
VTH(DET)
Input Voltage Threshold
VDET Increasing
1.7
2.0
2.3
V
HY(DET)
Detect Hysteresis
0.2
0.5
0.8
V
VCLAMP(I)
Input Low Clamp Voltage
IDET = -100 µA
0.45
0.75
1.00
V
VCLAMP(H)
Input High Clamp Voltage
IDET = 3 mA
6.5
7.2
7.9
V
Ib(DET)
Input Bias Current
1 V ≤ VDET ≤ 5 V
-1.0
-0.1
1.0
µA
ICLAMP(D)
Input High/Low Clamp Diode
Current(1)
±3
mA
Output Section
VOH
Output Voltage High
IO = -10 mA
10.5
11.0
V
VOL
Output Voltage Low
IO = 10 mA
0.8
1.0
V
tR
Rising Time(1)
CL = 1 nF
130
200
ns
tF
Falling Time(1)
CL = 1 nF
50
120
ns
VOMAX(O)
Maximum Output Voltage
VCC = 20 V, IO = 100 µA
12
14
16
V
VOMIN(O)
Output Voltage with UVLO
Activated
VCC = 5 V, IO = 100 µA
1
V
Restart Timer Section
tD(RST)
Restart Time Delay
VM1 = 1 V, VM2 = 3.5 V
150
µs
Over-Voltage Protection Section
ISOVP
Soft OVP Detecting Current
25
30
35
µA
IDOVP
Dynamic OVP Detecting Current
35
40
45
µA
VOVP
Static OVP Threshold Voltage
VINV = 2.7 V
2.10
2.25
2.40
V
Note:
1. These parameters, although guaranteed, are not 100% tested in production.
Multiplier Gain:
REFMM VVV ThresholdPin
K
21
_4
where VM1 = VPIN3, VM2 = VPIN2
© 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7527B • Rev. 1.0.3 7
FAN7527B — Power Factor Correction Controller
Typical Performance Characteristics
Figure 3. Error Amplifier Output Voltage vs.
Current Sensing Threshold
Figure 4. Multiplier Input Voltage vs. Current
Sensing Threshold
Figure 5. Supply Current vs. Supply Voltage
Figure 6. Reference Voltage vs. Temperature
Figure 7. Startup Threshold vs. Temperature
Figure 8. UVLO Hysteresis vs. Temperature
© 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7527B • Rev. 1.0.3 8
FAN7527B — Power Factor Correction Controller
Typical Performance Characteristics (Continued)
Figure 9. Startup Supply Current vs. Temperature
Figure 10. Error Amplifier Source Current
Figure 11. Error Amplifier Sink Current
vs. Temperature
Figure 12. Error Amplifier Input Bias Current
vs. Temperature
Figure 13. Multiplier Gain vs. Temperature
Figure 14. IDET Threshold Voltage vs. Threshold
© 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7527B • Rev. 1.0.3 9
FAN7527B — Power Factor Correction Controller
Typical Performance Characteristics (Continued)
Figure 15. IDET Input Hysteresis vs. Temperature
Figure 16. Restart Time vs. Temperature
Figure 17. Maximum Multiplier Output Voltage
vs. Temperature
Figure 18. Supply Current vs. Temperature
5.08 MAX
0.33 MIN
(0.56)
3.683
3.200
3.60
3.00
2.54
1.65
1.27
7.62
0.560
0.355
9.83
9.00
6.670
6.096
9.957
7.870
0.356
0.200
8.255
7.610
15°
0°
7.62
SIDE VIEW
NOTES:
A. CONFORMS TO JEDEC MS-001, VARIATION BA
B. ALL DIMENSIONS ARE IN MILLIMETERS
C. DIMENSIONS ARE EXCLUSIVE OF BURRS,
MOLD FLASH, AND TIE BAR EXTRUSIONS
D. DIMENSIONS AND TOLERANCES PER ASME
Y14.5M-2009
E. DRAWING FILENAME: MKT-N08Frev3
FRONT VIEW
TOP VIEW
1 4
58
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coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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