FAN7527D [ETC]
Power Factor Controller ; 功率因数控制器\n
| 型号： | FAN7527D |
| 厂家： | 
ETC |
| 描述： | Power Factor Controller
|
| 文件： | 总14页 (文件大小：410K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
FAN7527
Power Factor Correction Controller
Features
Description
• Internal Startup Timer
• Internal R/C filter eliminates the Need for an External
R/C filter
• Very Precise Adjustable Output Over Voltage Protection
• Zero Current Detector
• One Quadrant Multiplier
• Trimmed 1.5% Internal Bandgap Reference
• Under Voltage Lock Out with 3V of Hysteresis
• Totem Pole Output with High State Clamp
• Low Startup and Operating Current
• 8-Pin DIP or 8-Pin SOP
The FAN7527 provides simple and high performance active
power factor correction. FAN7527 is optimized for
electronic ballast and low power, high density power
supplies which require minimum board area reduced
component count and low power dissipation. Internal R/C
filter eliminates the need for an external R/C filter. Internally
clamping the error amplifier and multiplier outputs,
improves turn on overshoot characteristics and current
limiting. Special circuitry has also been added to prevent no
load runaway conditions. Independent of supply voltage, the
output drive clamping circuit limits overshoot of the power
MOSFET gate drive. This greatly enhances the system
reliability.
Applications
8-DIP
• Electronic Ballast
• SMPS
1
8-SOP
1
Rev 1.0.3
©2001 Fairchild Semiconductor Corporation
FAN7527
Internal Block Diagram
Vcc
8
Vcc
2.5V Ref
+
-
UVLO
Internal
Bias
Drive
Output
7
OUT
12V ↔ 9V
Timer
R
S
5
Idet
+
-
7.2V
Zero Current
Detector
2V ↔ 1.5V
Static OVP
Q
40K
+
-
+
-
4
CS
R
2.25V
8pF
Current Sense
Comparator
Vref
1.8V
Veao(L) = 2.25V
Vmo
0.25V
-
Vref
+
-
Vm1
0 ~ 3.8V
+
3
MULT
1
INV
Vm2
Vea(-)
Vref ~ Vref+2.5V
Multiplier
Error Amp
Isovp=30uA
Idovp=40uA
OVP Current
Detector
Vmo
Vm1 * (Vm2-Vref)
K =
GND
6
2
GND
EA_OUT
2
FAN7527
PIN Description
INV
1
2
3
4
Vcc
8
7
6
5
OUT
EA_OUT
MULT
GND
ldet
CS
(Top View)
Pin Number
Pin Name
Pin Function Descrition
Inverting input of the error amplifier. The output of the boost converter
should be resistively divided to 2.5V and connected to this pin.
1
INV
The output of the error amplifier. A feedback conpensation network is
placed between this pin and the INV pin.
2
3
EA_OUT
MULT
Input to the multiplier stage. The full-wave rectified AC is devided to
less than 2V and is connected to this pin.
Input to the PWM comparator. Current is sensed in the boost stage
MOSFET by a resistor in the source lead. An internal leading edge
blanking circuitry has been included to reject any high frequency noise
present on the current waveform.
4
5
CS
ldet
The zero current detector senses the inductor current by monitoring
when the boost inductor auxilary winding voltage falls below 1.8V. If it
is connected to GND, the device is disabled.
6
7
GND
OUT
The ground potential of all the pins.
Gate driver output . A push pull output stage is able to drive the Power
MOSFET with peak current of 400mA.
8
Vcc
Supply voltage of driver and control circuits.
3
FAN7527
Absolute Maximum Ratings (Ta=25°C)
Characteristics
Supply Voltage
Symbol
Value
30
Unit
V
V
CC
,I
Peak Drive Output Current
I
±500
mA
mA
mA
V
OH OL
Driver Output Clamping Diodes Vo > Vcc or Vo < -0.3V
Detector Clamping Diodes
lclamp
ldet
Vin
±10
±10
Error Amp, Multiplier And Comparator Input Voltages
Operating Junction Temperature
Operating Temperature Range
Storage Temperature Range
-0.3 to 6
150
Tj
°C
°C
°C
W
Topr
Tstg
Pd
-25 to 125
-65 to 150
0.8
Power Dissipation
Temperature Characteristics (-25°C ≤ Ta ≤ 125°C)
Characteristics
Symbol
∆ Vref
Min.
Typ.
Max.
Unit
Temperature Stability for Reference Voltage (V
Temperature Stability for Multiplier Gain (K)
)
-
-
20
-
-
mV
ref
∆ K/∆T
0.2
%/°C
4
FAN7527
Electrical Characteristics
V
= 14V, -25°C ≤ Ta ≤ 125°C, unless otherwise stated.
CC
Characteristics
Symbol
Test Condition
Min. Typ.
Max.
Unit
< UNDER VOLTAGE LOCK OUT SECTION>
Start Threshold Voltage
V
Vcc Increasing
10.5 11.5
12.5
4
V
V
th(st)
UVLO Hysteresis
-
2
3
HY(st)
< SUPPLY CURRENT SECTION >
Start-up Supply Current
I
Vcc =Vth(st) -0.2V
Output not switching
Vinv = 3V
20
-
60
3
100
6
uA
mA
mA
mA
st
Operating Supply Current
Operating Current at OVP
Dynamic Operating Supply Current
< ERROR AMPLIFIER SECTION >
I
cc
cc(ovp)
I
-
1.7
4
4
I
50KHz, CI = 1nF
-
8
dcc
Iref =0mA, Ta =25°C
0 ≤ Ta ≤ 125°C
14V ≤ Vcc ≤ 25V
-25 ≤ Ta ≤ 125°C
-
2.465 2.5
2.535
V
V
Voltage Feedback Input Threshold
V
ref
2.44
2.5
0.1
20
-
2.56
Line Regulation
∆V
∆V
1
3
-
-
10
mV
mV
uA
mA
mA
V
ref
Temperature Stability Of Vref (Note1)
Input Bias Current
-
ref
Ib
-0.5
-2
2
0.5
(ea)
Output Source Current
Output Sink Current
I
Vm2 = 4V
-4
-
-
-
-
-
-
-
-
source
Isink
Vm2 = 4V
4
Output Upper Clamp Voltage (Note2) Veao(H) Isource = 0.1mA
-
6
Output Lower Clamp Voltage (Note3) Veao(L)
Large Signal Open Loop Gain (Note4)
Power Supply Rejection Ratio (Note5) PSRR
Isink = 0.1mA
-
2.25
80
80
1
V
G
-
60
60
-
dB
dB
MHz
V/us
v
14V ≤ Vcc ≤ 25V
Unity Gain Bandwith (Note6)
Slew Rate (Note7)
GBW
SR
-
-
-
0.6
< MULTIPLIER SECTION>
Input Bias Current (Pin3)
Ib
-
-0.5
0
-
-
-
0.5
3.8
uA
V
(m)
M1 Input Voltage Range (Pin3)
M2 Input Voltage Range (Pin2)
Multiplier Gain (Note8)
∆V 1
-
m
∆V 2
-
Vref
Vref+2.5
0.52
1.95
-
V
m
K
Vm1 = 1V, Vm2 = 3.5V
0.36 0.44
1/V
V
Maximum Multiplier Output Voltage
Temperature Stability Of K (Note9)
Vomax(m) Vinv =0V, Vm1 = 4V
∆K/∆T -25 ≤ Ta ≤ 125°C
1.65
-
1.8
-0.2
%/°C
5
FAN7527
Electrical Characteristics(Continued)
V
CC
= 14V, -25°C ≤ Ta ≤ 125°C, unless otherwise stated.
Characteristics
Symbol
Test Condition
Min. Typ.
Max.
Unit
< CURRENT SENSE SECTION>
Input Offset Voltage (Note8)
Input Bias Current
V
Vm1=0V , Vm2 = 2.2V
-10
-1
3
10
1
mV
uA
io(cs)
Ib
0V ≤ Vcs ≤ 1.7V
-0.1
(cs)
Current Sense Delay To Output
(Note11)
tb
-
-
200
500
ns
(cs)
< DETECT SECTION >
Input Voltage Threshold
Detect Hysteresis
Vth
HY
Vdet Increasing
-
1.7
0.2
2
2.3
0.8
1
V
V
(det)
0.5
(det)
Input Low Clamp Voltage
Input High Clamp Voltage
Input Bias Current
Vclamp(I) Idet = -100uA
Vclamp(h) Idet = 3mA
0.45 0.75
V
6.5
-1
7.2
7.9
1
V
Ib(det)
1V ≤ Vdet ≤ 5V
-0.1
uA
Input High/low Clamp Diode Current
(Note12)
Iclamp(d)
-
-
-
±3
mA
< OUTPUT SECTION >
Output Voltage High
Output Voltage Low
V
Io = -10mA
Io = 10mA
CI = 1nF
10.5
11
0.8
130
50
14
-
-
V
V
oh
V
-
-
1
oI
tr
tf
Rising Time (Note13)
Falling Time (Note14)
Maximum Output Voltage
200
120
16
1
ns
ns
V
CI = 1nF
-
Vomax(o) Vcc = 20V, Io = 100uA
12
-
Output Voltage With UVLO Activated Vomin(o) Vcc = 5V , Io = 100uA
V
< RESTART TIMER SECTION>
Restart Time Delay
td
Vm1 = 1V, Vm2 = 3.5V
-
500
-
us
(rst)
<OVER VOLTAGE PROTECTION SECTION>
Soft OVP Detecting Current
Dynamic OVP Detecting Current
Static OVP Threshold Voltage
I
-
25
35
30
40
35
45
uA
uA
V
sovp
I
-
dovp
Vovp
Vinv = 2.7V
2.1
2.25
2.4
Note : 1 ~ 14 These parameters, although guaranteed, are not 100% tested in production.
Pin4_Threshold
Vm1 × (Vm2 – Vref)
------------------------------------------------------
Multiplier Gain: K =
......(Vm1 = Vpin3,Vm2 = Vpin2)
6
FAN7527
Typical Performance Characteristics
2.0
2.0
Vm1=3.0V Vm1=2.5V Vm1=2.0V
Veao=4.25V Veao=4.0V Veao=3.75V
1.8
Vm1=3.5V
1.6
Veao=4.5V
Vm1=1.5V
Veao=3.5V
Veao=3.25V
Veao=3.0V
1.5
Vm1=4.0V
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Vm1=1.0V
1.0
Veao=2.75V
Vm1=0.5V
0.5
Veao=2.5V
5
Vm1=0V
5.0
0.0
2.0
2.5
3.0
3.5
4.0
4.5
0
1
2
3
4
EA Output Voltage(V)
Multiplier Input Voltage(V)
Figure 2. Multiplier Input Voltage
vs Current Sensing Threshold
Figure 1. Error Amplifier Output Voltage
vs Current Sensing Threshold
0.015
2.7
2.6
2.5
2.4
2.3
0.012
0.009
0.006
0.003
0.000
0
10
20
30
40
50
-25
0
25
50
75
100
125
℃
)
Supply Voltage(V)
Temperature (
Figure 4. Reference Voltage vs Temperature
Figure 3. Supply Current vs Supply Voltage
5
14
12
10
8
4
3
2
1
0
6
4
2
0
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
℃
Temperature (
)
℃
Temperature ( )
Figure 6. UV Lockout Hysteresis vs Temperature
Figure 5. Start-Up Threshold vs Temperature
7
FAN7527
Typical Performance Characteristics (continued)
100
0
90
80
70
60
50
40
30
20
10
0
-1
-2
-3
-4
-5
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
℃
Temperature (
)
℃
Temperature (
)
Figure 8. Error Amplifier Source Current
vs Temperature
Figure 7. Start-Up Supply Current vs Temperature
5
0.5
0.4
0.3
4
3
2
1
0
0.2
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
℃
Temperature (
)
℃
Temperature (
)
Figure 10. Error Amplifier Input Bias Current
vs Temperature
Figure 9. Error Amplifier Sink Current
vs Temperature
4.0
1.0
0.8
0.6
0.4
0.2
0.0
3.2
2.4
1.6
0.8
0.0
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
℃
℃
)
Temperature (
)
Temperature (
Figure 11. Multiplier Gain vs Temperature
Figure 12. ldet Threshold Voltage vs Temperature
8
FAN7527
Typical Performance Characteristics (continued)
1.0
1000
900
800
700
600
500
400
300
200
100
0
0.8
0.6
0.4
0.2
0.0
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
℃
Temperature (
)
℃
Temperature (
)
Figure 14. Restart Time vs Temperature
Figure 13. ldet Input Hysteresis vs Temperature
5
2.0
4
3
2
1
0
1.6
1.2
0.8
0.4
0.0
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
℃
Temperature (
)
℃
Temperature (
)
Figure 15. Max.Mult.Output Voltage vs Temperature
Figure 16. Supply Current vs Temperature
9
FAN7527
Mechanical Dimensions
Package
Dimensions in millimeters
8-DIP
6.40 ±0.20
0.252 ±0.008
#1
#4
#8
#5
3.30 ±0.30
0.130 ±0.012
5.08
0.200
MAX
7.62
0.300
3.40 ±0.20
0.134 ±0.008
0.33
MIN
0.013
10
FAN7527
Mechanical Dimensions (Continued)
Package
Dimensions in millimeters
8-SOP
0.1~0.25
MIN
0.004~0.001
1.55 ±0.20
0.061 ±0.008
#8
#5
#1
#4
6.00 ±0.30
0.236 ±0.012
1.80
0.071
MAX
3.95 ±0.20
0.156 ±0.008
5.72
0.225
0.50 ±0.20
0.020 ±0.008
11
FAN7527
Ordering Information
Product Number
FAN7527
Package
Operating Temperature
8-DIP
-25 ~ +125oC
FAN7527D
8-SOP
12
FAN7527
13
FAN7527
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
7/23/01 0.0m 001
Stock#DSxxxxxxxx
2001 Fairchild Semiconductor Corporation
相关型号：
FAN7527DTF
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FAIRCHILD
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