UA7527 [UTC]
The UTC UA7527 is a simple and high performance active power factor corrective controller for boost PFC application which operates in the critical conduction mode.; 在UTC UA7527是工作于临界导通模式升压PFC应用的简单，高性能的有源功率因数校正控制器。
| 型号： | UA7527 |
| 厂家： | 
Unisonic Technologies |
| 描述： | The UTC UA7527 is a simple and high performance active power factor corrective controller for boost PFC application which operates in the critical conduction mode. |
| 文件： | 总6页 (文件大小：241K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
UA7527
Preliminary
LINEAR INTEGRATED CIRCUIT
POWER FACTOR
CONTROLLER
DESCRIPTION
The UTC UA7527 is a simple and high performance active
power factor corrective controller for boost PFC application which
operates in the critical conduction mode. The UTC UA7527 is
optimized for electronic ballasts, low power and 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. Special circuitry has
also been added to prevent no load runaway conditions. The
output drive clamping circuit limits the overshoot of the power
MOSFET gate drive despite the supply voltage. This greatly
enhances the system reliability.
SOP-8
FEATURES
* Internal Start-up Timer
* Very Precise Adjustable Output Over Voltage Protection
* Zero Current Detector
* Quadrant Multiplier
* Internal R/C Filter Eliminates the Need for an External R/C Filter
* Trimmed 1.5% Internal Band Gap Reference
* Under Voltage Lockout with 3V of Hysteresis
* Totem Pole Output With High State Clamp
* Low Start-up and Operating Current
ORDERING INFORMATION
Ordering Number
Lead Free
Package
Packing
Halogen Free
UA7527L-S08-R
UA7527L-S08-T
UA7527G-S08-R
UA7527G-S08-T
SOP-8
SOP-8
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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UA7527
Preliminary
LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO.
PIN NAME
INV
DESCRIPTION
The inverting input of the error amplifier. The output of the boost converter should be
resistively divided to 2.5V and connected to this pin.
The error amplifier output. A feedback compensation network is placed between this pin
and the INV pin.
1
2
3
EA_OUT
MULT
Input to the multiplier stage. Full-wave rectified AC voltage is divided into a voltage less
than 2V and is connected to this pin.
Input of the Pulse-Width Modulation comparator. Current is sensed in the boost stage
MOSFET by a resistor in the source lead. An internal R / C filter can filter out any
high frequency noise.
4
CS
5
6
IDET
Input to zero current detection.
GND
The IC ground.
Gate driver output. This pin provides an output to an external Power MOSFET with
peak current of 500mA.
7
8
OUT
VCC
The positive supply of the device.
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UA7527
Preliminary
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
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UA7527
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
VCC
RATINGS
30
UNIT
V
Supply Voltage
Multiplier, Error Amp and Comparator Input Voltages
Peak Drive Output Current
VIN
-0.3 ~ 6
±500
V
IOH, IOL
lCLAMP
lDET
mA
mA
mA
W
Output Clamping Diodes Current VO > VCC or VO < -0.3V
Detect Clamping Diodes Current
Power Dissipation
±10
±10
PD
0.8
Junction Temperature
TJ
150
°C
Operating Temperature
TOPR
TSTG
-25 ~ 125
-65 ~ 150
°C
Storage Temperature
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
TEMPERATURE CHARACTERISTICS (-25°C ≤ TA ≤ 125°C)
PARAMETER
SYMBOL
∆VREF
RATINGS
20
UNIT
mV
Temperature Stability for Reference Voltage (VREF
)
Temperature Stability for Multiplier Gain (K)
∆K/∆T
-0.2
%/°C
ELECTRICAL CHARACTERISTICS (VCC= 14V, -25°C ≤ TA ≤ 125°C, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNIT
UNDER VOLTAGE LOCKOUT SECTION
Start Threshold Voltage
VTH(ST) VCC Increasing
HY(ST)
10.5
2
11.5
3
12.5
4
V
V
UV lockout Hysteresis
SUPPLY CURRENT SECTION
Start-up Supply Current
IST
VCC = VTH(ST) -0.2V
10
60
3
100
6
uA
mA
mA
mA
Operating Supply Current
ICC
Output not switching
Operating Current at OVP
ICC(OVP) VINV = 3V
1.7
4
4
Dynamic Operating Supply Current
ERROR AMPLIFIER SECTION
IDCC
50kHz, CI = 1nF
8
I
REF = 0mA, TA = 25°C
2.465
2.44
2.5
2.5
0.1
20
2.535
2.56
10
V
V
Voltage Feedback Input Threshold
VREF
-25 ≤ TA ≤ 125°C
Line Regulation
∆VREF1 14V ≤ VCC ≤ 25V
∆VREF3 -25 ≤ TA ≤ 125°C
IB(EA)
mV
mV
uA
mA
mA
V
Temperature Stability of VREF (Note 1)
Input Bias Current
-0.5
-2
0.5
ISOURCE VM2 = 4V
-4
4
Output Current
ISINK
VM2 = 4V
2
Output Upper Clamp Voltage (Note 2)
Output Lower Clamp Voltage (Note 3)
Large Signal Open Loop gain (Note 4)
Power Supply Rejection Ratio (Note 5)
Unity Gain Bandwidth (Note 6)
Slew Rate (Note7)
VEAO(H) ISOURCE = 0.1mA
6
VEAO(L) ISINK = 0.1mA
2.25
80
80
1
V
GV
60
60
dB
dB
MHz
V/us
PSRR 14V ≤ VCC ≤ 25V
GBW
SR
0.6
MULTIPLIER SECTION
Input Bias Current (Pin3)
IB (M)
∆VM1
∆VM2
-0.5
0
0.5
3.8
uA
V
M1 Input Voltage Range (Pin3)
M2 Input Voltage Range (Pin2)
Multiplier Gain (Note8)
VREF
0.36
1.65
VREF+2.5
0.52
V
K
VM1 = 1V, VM2 = 3.5V
0.44
1.8
1/V
V
Maximum Multiplier Output Voltage
Multiplier Gain Stability (Note 9)
VOMAX(M) VINV =0V, VM1 = 4V
1.95
∆K/∆T -25 ≤ TA ≤ 125°C
-0.2
%/°C
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UA7527
Preliminary
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNIT
CURRENT SENSE SECTION
Input Offset Voltage (Note 8)
Input Bias Current
VIO(CS) VM1=0V, VM2 = 2.2V
IB(CS) 0V ≤ VCS ≤ 1.7V
tD(CS) (Note 11)
-10
-1
3
10
1
mV
uA
ns
-0.1
200
Current Sense Delay to Output
ZERO CURRENT DETECT SECTION
Input Voltage Threshold
Detect Hysteresis
500
VTH(DET) VDET Increasing
HY(DET)
1.7
0.2
0.45
6.5
-1
2
2.3
0.8
1
V
V
0.5
Input Low Clamp Voltage
Input High Clamp Voltage
Input Bias Current
VCLAMP IDET = -100uA
V CLAMP) IDET = 3mA
IB(DET) 1V ≤ VDET ≤ 5V
I CLAMP(D) (Note 12)
0.75
7.2
V
7.9
1
V
-0.1
uA
mA
Input High/Low Clamp Diode Current
OUTPUT SECTION
±3
High
Low
VOH
VOL
tR
IO = -10mA
IO = 10mA
CI = 1nF
10.5
12
11
0.8
130
50
V
V
Output Voltage
1
200
120
16
Rising Time (Note 13)
ns
ns
V
Falling Time (Note 14)
TF
CI = 1nF
Maximum Output Voltage
Output Voltage with UVLO Activated
RESTART TIMER SECTION
Restart Time Delay
VOMAX(O) VCC = 20V, IO = 100uA
VOMIN(O) VCC = 5V , IO = 100uA
14
1
V
tD(RST) VM1 = 1V, VM2 = 3.5V
150
us
OVER VOLTAGE PROTECTION SECTION
Soft OVP Detecting Current
ISOVP
25
35
30
40
35
45
uA
uA
V
Dynamic OVP Detecting Current
Static OVP Threshold Voltage
IDOVP
VOVP VINV = 2.7V
2.1
2.25
2.4
Notes: 1~14.These parameters, although guaranteed, are not 100% tested in production.
Pin4_Threshold
Multiplier Gain: K=
……(VM1=Vpin3, VM2=Vpin2)
VM1×
(
VM2 − VREF
)
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UA7527
Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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