|
|
|
부품번호 | KA7526 기능 |
|
|
기능 | Power Factor Correction Controller | ||
제조업체 | Fairchild | ||
로고 | |||
전체 22 페이지수
KA7526
Power Factor Correction Controller
www.fairchildsemi.com
Features
• Internal Startup Timer
• Internal R/C filter which eliminates the Need for an
External R/C filter
• Overvoltage Comparator eliminates Runaway Output
Voltage
• Zero Current Detector
• One Quadrant Multiplier
• Trimmed 1.5% Internal Bandgap Reference
• Under Voltage Lock Out with 5V of Hysteresis
• Totem Pole Output with High State Clamp
• Low Startup and Operating Current
• 8-Pin DIP or 8-Pin SOP
Applications
• Electronic Ballast
• SMPS
Descriptions
The KA7526 provides simple and high performance active
power factor correction. KA7526 is optimized for electronic
ballast and low power, high density power supplies requiring
a minimum board area, reduced component count and low
power dissipation. Addition of internal R/C filter eliminates
the need for an external R/C filter. Internal clamping of the
error amplifier and multiplier outputs improves turn on over-
shoot characteristics and current limiting. Special circuitry
has also been added to prevent no load runaway conditions.
The output drive clamping circuit limits overshoot of the
power MOSFET gate drive Independent of supply voltage,
so that it greatly enhance the system reliability.
8-DIP
8-SOP
1
1
©2000 Fairchild Semiconductor International
Rev. 5.0
KA7526
Absolute Maximum Ratings
Parameter
Supply voltage
Peak drive output current
Driver output clamping diodes
VO>VCC or VO<-0.3V
Detector clamping diodes
Error amp, multiplier and
comparator input voltage
Operating temperature range
Storage temperature range
Power dissipation(Note)
Thermal resistance (Note)
(Junction-to-air)
Note :
Based in 8-DIP
Symbol
VCC
IOH, IOI
Iclamp
Idet
VIN
Topr
Tstg
Pd
qja
Value
30
± 500
± 10
±3
-0.3 to 6
-25 to 125
-65 to 150
0.8
100
Temperature Characteristics (-25oC ≤ Ta ≤ 125oC )
Parameter
Temperature stability for reference voltage(Vref)
Temperature stability for multiplier gain(K)
Symbol
∆Vref (Typ)
∆K/∆T (Typ)
Value
20
-0.2
Unit
V
mA
mA
mA
V
oC
oC
W
oC/W
Unit
mV
%/oC
4
4페이지 Typical Performance Characteristics
KA7526
Fig1. E.A. Output Voltage vs C.S. Threshold
1.8
1.6
Vm1=4V
1.4
Vm1=1.5V
1.2
Vm1=1V
1.0
0.8
0.6
Vm1=0.5V
0.4
0.2
0.0
-0.2
2.5
3.0 3.5 4.0 4.5
EA Output Voltage [V]
5.0
Figure 1. EA Output Voltage vs C.S. Threshold
Fig3. Supply Current VS Supply Voltage
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0.0
0
5 10 15 20 25 30 35 40 45
Supply Voltage [v]
Figure 3. Supply Current vs Supply Voltage
Fig5. Start-up Threshold vs Temperature
13.4
13.3
13.2
13.1
13.0
12.9
12.8
12.7
12.6
12.5
-40 -20 0 20 40 60 80 100 120 140
Ambient Temperature(℃)
Figure 5. Start-Up Threshold vs Temperature
Fig2. Multiplier Input Voltage vs C.S. Threshold
1.8
1.6
Veao=5V
1.4
1.2
Veao=3.25V
1.0
Veao=3V
0.8
0.6
0.4 Veao=2.75V
0.2
Veao=2.5V
0.0
-0.2
0
123
Multiplier Input Voltage [V]
4
5
Figure 2. Multiplier Input Voltage vs C.S. Threshold
Fig4. Reference Voltage vs Temperature
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
-40 -20 0 20 40 60 80 100 120 140
Ambient Temperature(℃)
Figure 4. Reference Voltage vs Temperature
Fig6. UV Lockout Hysteresis vs Temperature
6.5
6.0
5.5
5.0
4.5
4.0
3.5
-40 -20 0 20 40 60 80 100 120 140
Ambient Temperature (℃)
Figure 6. UV Lockout Hysteresis vs Temperature
7
7페이지 | |||
구 성 | 총 22 페이지수 | ||
다운로드 | [ KA7526.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
KA7521 | ELECTRONIC BALLAST CONTROLLER | Fairchild Semiconductor |
KA7522 | DIMMING BALLAST CONTROL IC | Fairchild Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |