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부품번호 | KA1H0280RB-YDTU 기능 |
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기능 | Fairchild Power Switch(FPS) | ||
제조업체 | Fairchild | ||
로고 | |||
전체 10 페이지수
www.fairchildsemi.com
KA1M0280RB/KA1H0280RB
Fairchild Power Switch(FPS)
Features
• Precision Fixed Operating Frequency
• KA1M0280RB (67kHz) , KA1H0280RB (100kHz)
• 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
• Auto Restart
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-220F-4L
Internal Block Diagram
1
1. GND 2. DRAIN 3. VCC 4. FB
#3 VCC
#4 FB
32V 5V Internal
Vref bias
Good
logic
5µA
7.5V
25V
9V
1mA
2.5R
1R
+
OSC
−
+
S
Q
R
L.E.B
0.1V
−
+ Thermal S/D
−
OVER VOLTAGE S/D
S
Q
R
Power on reset
SFET
©2003 Fairchild Semiconductor Corporation
#2 DRAIN
#1 GND
Rev.1.0.2
KA1M0280RB/KA1H0280RB
Electrical Characteristics (CONTROL part) (Continued)
(Ta=25°C unless otherwise specified)
Parameter
UVLO SECTION
Start Threshold Voltage
Stop Threshold Voltage
OSCILLATOR SECTION
Symbol
VSTART
VSTOP
Initial Accuracy
Frequency Change With Temperature (2)
FOSC
∆F/∆T
Maximum Duty Cycle
Dmax
FEEDBACK SECTION
Feedback Source Current
IFB
Shutdown Feedback Voltage
VSD
Shutdown Delay Current
Idelay
REFERENCE SECTION
Output Voltage (1)
Temperature Stability (1)(2)
Vref
Vref/∆T
CURRENT LIMIT (SELF-PROTECTION) SECTION
Peak Current Limit
IOVER
PROTECTION SECTION
Thermal Shutdown Temperature (Tj) (1)
TSD
Over Voltage Protection Voltage
VOVP
TOTAL DEVICE SECTION
Start-Up Current
ISTART
Operating Supply Current
(Control Part Only)
IOP
VCC Zener Voltage
VZ
Condition
Min. Typ. Max. Unit
-
After turn on
14 15 16
9 10 11
V
V
KA1M0280RB
KA1H0280RB
-25°C ≤ Ta ≤ +85°C
KA1M0280RB
KA1H0280RB
61 67 73
kHz
90 100 110
- ±5 ±10 %
74 77 80
64 67 70
%
Ta=25°C, 0V ≤ Vfb ≤ 3V 0.7 0.9 1.1
- 6.9 7.5 8.1
Ta=25°C, 5V ≤ Vfb ≤ VSD 4.0 5.0 6.0
mA
V
µA
Ta=25°C
-25°C ≤ Ta ≤ +85°C
4.80 5.00 5.20 V
- 0.3 0.6 mV/°C
Max. inductor current
1.05 1.2 1.35 A
-
140 160 -
°C
-
23 25 28
V
VCC=14V
Ta=25°C
ICC=20mA
0.1 0.3 0.45
6 12 18
30 32.5 35
mA
mA
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 groups are normalized at Ta=25°C)
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 13. Static Drain-Source on Resistance
KA1M0280RB/KA1H0280RB
7
7페이지 | |||
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부품번호 | 상세설명 및 기능 | 제조사 |
KA1H0280RB-YDTU | Fairchild Power Switch(FPS) | Fairchild |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |