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부품번호 | KA1M0880 기능 |
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기능 | SPS | ||
제조업체 | Fairchild | ||
로고 | |||
전체 10 페이지수
KA1L0880B/KA1M0880B
Fairchild Power Switch(FPS)
www.fairchildsemi.com
Features
• Precision fixed operating frequency
• KA1L0880B(50KHz),KA1M0880B(67KHz)
• Pulse by pulse over current limiting
• Over load protection
• Over voltage protection (Min. 23V)
• Internal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET
• Latch up mode
• Soft start
Description
The Fairchild Power Switch(FPS) product family is specially
designed for an off-line SMPS with minimal external
components. The Fairchild Power Switch(FPS) consist of high
voltage power SenseFET and current mode PWM controller IC.
PWM controller features integrated fixed oscillator, under
voltage lock out, leading edge blanking, optimized gate turn-on/
turn-off driver, thermal shut down protection, over voltage
protection, temperature compensated precision current sources
for loop compensation and fault protection circuit. compared to
discrete MOSFET and controller or RCC switching converter
solution, a Fairchild Power Switch(FPS) can reduce total
component count, design size, weight and at the same time
increase & efficiency, productivity, and system reliability. It has
a basic platform well suited for cost effective design in either a
flyback converter or a forward converter.
TO-3P-5L
Internal Block Diagram
1
1. DRAIN 2. GND 3. VCC 4. FB 5. S/S
#3 VCC
#5 Soft Start
#4 FB
32V 5V Internal
Vref bias
Good
logic
5V
5µA
7.5V
25V
1mA 2.5R
9V 1R
+
OSC
−
+
S
Q
R
L.E.B
0.1V
−
+ Thermal S/D
−
OVER VOLTAGE S/D
S
Q
R
Power on reset
©2001 Fairchild Semiconductor Corporation
SFET
#1 DRAIN
#2 GND
Rev.1.0.2
KA1L0880B/KA1M0880B
Electrical Characteristics (CONTROL part)
(Ta=25°C unless otherwise specified)
Parameter
Symbol
Condition
Min.
UVLO SECTION
Start threshold voltage
VSTART - 14
Stop threshold voltage
VSTOP After turn on
9
OSCILLATOR SECTION
Initial accuracy
Frequency change with temperature (2)
FOSC
∆F/∆T
KA1L0880B
KA1M0880B
−25°C ≤ Ta ≤ +85°C
45
61
-
Maximum duty cycle
Dmax
74
FEEDBACK SECTION
Feedback source current
IFB Ta=25°C, 0V ≤ Vfb ≤ 3V 0.7
Shutdown Feedback voltage
VSD
- 6.9
Shutdown delay current
Idelay Ta=25°C, 5V ≤ Vfb ≤ VSD 4.0
SOFT START SECTION
Soft Start Voltage
VSS
VFB =2V
4.7
Soft Start Current
ISS Sync & S/S=GND
0.8
REFERENCE SECTION
Output voltage (1)
Temperature Stability (1)(2)
Vref
Vref/∆T
Ta=25°C
−25°C ≤ Ta ≤ +85°C
4.80
-
CURRENT LIMIT (SELF-PROTECTION) SECTION
Peak Current Limit
IOVER Max. inductor current
4.40
PROTECTION SECTION
Thermal shutdown temperature (Tj) (1)
TSD
- 140
Over voltage protection voltage
VOVP
- 23
TOTAL DEVICE SECTION
Start Up current
ISTART VCC=14V
0.1
Operating supply current
(control part only)
IOP Ta=25°C
6
VCC zener voltage
VZ ICC=20mA
30
Typ.
15
10
50
67
±5
77
0.9
7.5
5.0
5.0
1.0
5.00
0.3
5.00
160
25
0.3
12
32.5
Max. Unit
16 V
11 V
55
kHz
73
±10 %
80 %
1.1 mA
8.1 V
6.0 µA
5.3 V
1.2 mA
5.20 V
0.6 mV/°C
5.60 A
- °C
28 V
0.45 mA
18 mA
35 V
Note:
1. These parameters, although guaranteed, are not 100% tested in production
2. These parameters, although guaranteed, are tested in EDS (wafer test) process
4
4페이지 Typical Performance Characteristics (Continued)
(These characteristic grahps are normalized at Ta=25°C)
KA1L0880B/KA1M0880B
1.15
1.1
1.05
Vss 1
0.95
0.9
0.85
-25
Fig.13 Soft Start Voltage
0 25 50 75 100 125 150
Temperature [°C]
Figure 13. Soft Start Voltage
Fig.14 Drain Source Turn-on
Res is tance
2.5
2
1.5
Rds(on)1
0.5
0
-25 0 25 50 75 100 125 150
Temperature [°C]
Figure 14. Static Drain Source on Resistance
7
7페이지 | |||
구 성 | 총 10 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
KA1M0880 | Fairchild Power Switch(FPS) | Fairchild |
KA1M0880 | SPS | Fairchild |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |