KA3S0680RFB-TU [FAIRCHILD]
Fairchild Power Switch(FPS); 飞兆功率开关（ FPS ）
| 型号： | KA3S0680RFB-TU |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Fairchild Power Switch(FPS) |
| 文件： | 总12页 (文件大小：146K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
KA3S0680RB/KA3S0680RFB
Fairchild Power Switch(FPS)
Features
Description
• Wide operatimg frequency range up to (150kHz)
• Pulse by pulse over current limiting
• Over load protection
• Over voltage protecton (Min. 23V)
• Internal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET
• External sync terminal
• Auto Restart Mode
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. controller IC features a trimmed 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
R
switching converter solution, a Fairchild Power
CC
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 C-TV power supply.
TO-3P-5L
TO-3PF-5L
1
1
1.DRAIN 2.GND 3.V
4.FB 5.Sync
CC
Internal Block Diagram
#3 V
CC
#1 DRAIN
32V
5V
Vref
Internal
bias
SFET
Good
logic
#5 Sync
#4 FB
−
OSC
+
5V
S
R
6.4V
Q
−
L.E.B
0.1V
2.5R
2µA
1mA
9V
+
1R
+
S
#2 GND
−
7.5V
25V
Q
R
Thermal S/D
OVER VOLTAGE S/D
+
Power on reset
−
Rev.1.0.2
©2001 Fairchild Semiconductor Corporation
KA3S0680RB/KA3S0680RFB
Absolute Maximum Ratings
Characteristic
Symbol
Value
800
Unit
V
Maximum Drain voltage (1)
V
D,MAX
V
DGR
Drain Gate voltage (R =1MΩ)
800
V
GS
V
GS
Gate source (GND) voltage
Drain current pulsed (2)
±30
V
I
DM
24.0
455
A
DC
Single pulsed avalanche energy (3)
mJ
E
AS
I
D
D
Continuous drain current (T =25°C)
6.0
A
C
DC
DC
V
I
Continuous drain current (T =100°C)
4.0
A
C
V
CC,MAX
Maximum supply voltage
Input voltage range
30
V
FB
−0.3 to V
150
V
SD
P
(watt H/S)
D
W
W/°C
°C
Total power dissipation
Derating
1.21
T
A
Operating ambient temperature
Storage temperature
−25 to +85
T
STG
−55 to +150
°C
Note:
1. Tj=25°C to 150°C
2. Repetitive rating: Pulse width limited by maximum junction temperature
3. L=24mH, starting Tj=25 °C
2
KA3S0680RB/KA3S0680RFB
Electrical Characteristics (SFET part)
(Ta = 25°C unless otherwise specified)
Characteristic
Symbol
BV
Test condition
Min.
Typ. Max. Unit
Drain source breakdown voltage
V
= 0V, I = 50µA
800
-
-
-
V
DSS
GS
D
V
V
= Max., Rating,
= 0V
DS
GS
-
-
50
µA
Zero gate voltage drain current
I
DSS
V
V
= 0.8Max., Rating,
DS
GS
-
200
mA
= 0V, T = 125°C
C
Static drain source on resistance (note)
Forward transconductance (note)
Input capacitance
R
V
V
= 10V, I = 4.0A
D
-
1.6
2.5
2.0
W
S
DS(ON)
GS
DS
gfs
= 15V, I = 4.0A
D
1.5
-
-
-
-
-
-
-
Ciss
-
-
-
-
-
-
1600
140
42
V
= 0V, V
= 25V,
DS
GS
Output capacitance
Coss
Crss
pF
f = 1MHz
Reverse transfer capacitance
Turn on delay time
t
V
= 0.5BV
DD
, I = 6.0A
DSS D
60
d(on)
tr
(MOSFET switching
time are essentially
independent of
Rise time
150
300
nS
Turn off delay time
t
d(off)
tf
Fall time
-
130
-
operating temperature)
Total gate charge
(gate-source+gate-drain)
V
V
=10V, I = 6.0A,
D
GS
DS
Qg
-
70
-
= 0.5BV
(MOSFET
DSS
switching time are
essentially independent of
operating temperature)
nC
Gate source charge
Qgs
Qgd
-
-
16
27
-
-
Gate drain (Miller) charge
Note:
Pulse test: Pulse width ≤ 300µS, duty cycle ≤ 2%
1
S = ---
R
3
KA3S0680RB/KA3S0680RFB
Electrical Charcteristics (SFET part) (Continued)
(Ta = 25°C unless otherwise specified)
Characteristic
UVLO SECTION
Symbol
Test condition
Min. Typ. Max. Unit
Start threshold voltage
Stop operating voltage
OSCILLATOR SECTION
Initial accuracy
V
-
14
9
15
10
16
11
V
V
START
V
After turn on
STOP
F
Ta = 25°C
18
-
20
±5
95
22
±10
98
kHz
%
OSC
Frequency change with temperature (2)
∆F/∆T
−25°C ≤ Ta ≤ +85°C
Maximum duty cycle
D
-
92
%
MAX
FEEDBACK SECTION
Feedback source current
Shutdown Feedback voltage
Shutdown delay current
SYNC. & SOFT START SECTION
Soft start voltage
I
Ta = 25°C, Vfb = GND
0.7
6.9
1.4
0.9
7.5
1.8
1.1
8.1
2.2
mA
V
FB
V
-
SD
I
Ta = 25°C, 5V ≤ Vfb ≤V
µA
delay
SD
V
V
FB
= 2V
4.7
0.8
6.0
5.0
1.0
6.4
5.3
1.2
6.8
V
mA
V
SS
Soft start current
I
Sync & S/S = GND
Vfb = 5V
SS
Sync threshold voltage(3)
REFERENCE SECTION
Output voltage (1)
V
SYTH
Vref
Ta = 25°C
4.80 5.00 5.20
0.3
V
Temperature Stability (1)(2)
Vref/∆T
−25°C ≤ Ta ≤ +85°C
-
0.6 mV/°C
CURRENT LIMIT (SELF-PROTECTION) SECTION
Peak Current Limit
I
Max. inductor current
3.52 4.00 4.48
A
OVER
PROTECTION SECTION
Thermal shutdown temperature (Tj) (1)
Over voltage protection voltage
TOTAL DEVICE SECTION
Start Up current
T
-
-
140 160
-
°C
SD
V
23
25
28
V
OVP
I
V
= 14V
0.1
6
0.3 0.55
mA
mA
V
START
CC
Ta = 25°C
= 20mA
Operating supply current
(control part only)
I
12
18
35
OP
V
zener voltage
V
I
CC
30
32.5
CC
Z
Note:
1. These parameters, although guaranteed, are not 100% tested in production
2. These parameters, although guaranteed, are tested in EDS(water test) process
3.The amplitude of the sync. pulse is recommended to be between 2V and 3V for stable sync. function.
4
KA3S0680RB/KA3S0680RFB
Typical Performance Characteristics (control part)
(These characteristic graphs are normalized at Ta = 25°C)
1.2
1.15
1.1
1.2
1.15
1.1
1.05
1.05
Ifb
1
0.95
0.9
Fosc
1
0.95
0.9
0.85
0.8
0.85
0.8
-25
0
25
50
75 100 125 150
- 25
0
25 50 75 100 125 150
Temperature [°C]
Temperature [°C]
Figure 1. Operating Frequency
Figure 2. Feedback Source Current
1.1
1.05
1.2
1.15
1.1
I1
over
1.05
Iop
0.95
0.9
1
0.95
0.9
0.85
0.8
0.85
0.8
-25
0
25 50
75 100 125 150
-25
0
25 50 75 100 125 150
Temperature [°C]
Temperature [°C]
Figure 3. Operating Supply Current
Figure 4. Peak Current Limit
1.5
1.15
1.1
1.3
1.1
0.9
0.7
0.5
1.05
Istart
Vstart
1
0.95
0.9
0.85
-25
0
25 50 75 100 125 150
-25
0
25 50 75 100 125 150
Temperature [°C]
Temperature [°C]
Figure 5. Start up Current
Figure 6. Start Threshold Voltage
5
KA3S0680RB/KA3S0680RFB
Typical Performance Characteristics (continued)
(These characteristic graphs are normalized at Ta = 25°C)
1.15
1.1
1.15
1.1
1.05
1.05
V
th(H)
1
Dmax
1
0.95
0.9
0.95
0.9
0.85
0.85
-25
0
25 50 75 100 125 150
-25
0
25 50 75 100 125 150
Temperature [°C]
Temperature [°C]
Figure 7. Stop Threshold Voltage
Figure 8. Maximum Duty Cycle
1.2
1.15
1.15
1.1
1.05
1
0.95
0.9
1.1
1.05
Vsd
1
0.95
0.9
Vz
0.85
0.8
0.85
-25
0
25
50
75 100 125 150
-25
0
25
50
75 100 125 150
Temperature [°C]
Temperature [°C]
Figure 9. V
Zener Voltage
Figure 10. Shutdown Feedback Voltage
CC
1.15
1.2
1.15
1.1
1.1
1.05
1.05
Idelay
1
Vovp
1
0.95
0.9
0.85
0.8
0.95
0.9
0.85
-25
0
25 50
75 100 125 150
-25
0
25 50 75 100 125 150
Temperature [°C]
Temperature [°C]
Figure 11. Shutdown Delay Current
Figure 12. Over Voltage Protection
6
KA3S0680RB/KA3S0680RFB
Typical Performance Characteristics (continued)
(These characteristic graphs are normalized at Ta = 25°C)
1.15
2.5
2
1.1
1.05
1.5
Vss
1
0.95
0.9
(
)
Rdson
1
0.5
0
0.85
-25
0
25
50
75 100 125 150
-25
0
25 50 75 100 125 150
Figure 14. Static Drain-Source on Resistance
Figure13. Soft Start Voltage
7
KA3S0680RB/KA3S0680RFB
Package Dimensions
TO-3P-5L
8
KA3S0680RB/KA3S0680RFB
Package Dimensions (Continued)
TO-3P-5L (Forming)
9
KA3S0680RB/KA3S0680RFB
Package Dimensions (Continued)
TO-3PF-5L
10
KA3S0680RB/KA3S0680RFB
Package Dimensions (Continued)
TO-3PF-5L(Forming)
11
KA3S0680RB/KA3S0680RFB
Ordering Information
Product Number
Package
Operating Temperature
KA3S0680RB-TU
TO-3P-5L
-25°C to +85°C
KA3S0680RB-YDTU
KA3S0680RFB-TU
TO-3P-5L(Forming)
TO-3PF-5L
-25°C to +85°C
KA3S0680RFB-YDTU TO-3PF-5L(Forming)
TU : Non Forming Type
YDTU : Forming Type
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
10/17/01 0.0m 001
Stock#DSxxxxxxxx
2001 Fairchild Semiconductor Corporation
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