FAIRCHILD KA3S0765RF-TU

www.fairchildsemi.com
KA3S0765R/KA3S0765RF
Fairchild Power Switch(SPS)
Features
Description
•
•
•
•
•
•
•
•
•
The SPS product family is specially designed for an offline
SMPS with minimal external components. The SPS consist
of high voltage power SenseFET and current mode PWM
IC. Included control IC features a trimmed oscillator, under
voltage lock-out, leading edge blanking, optimized gate turnon/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 SPS can reduce total component count, design size, weight and at the same time increase
& efficiency, productivity, and system reliabilit. It has a
basic platform well suited for cost-effective C-TV power
supply.
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
TO-3P-5L
TO-3PF-5L
1
1
1. DRAIN 2. GND 3. Vcc 4. FB 5. Sync
Internal Block Diagram
#3 VCC
32V
5V
Vref
Internal
bias
Good
logic
−
#5 Sync
OSC
+
5V
S
6.4V
R
−
#4 FB
2µA
1mA 2.5R
1R
9V
L.E.B
0.1V
−
+
25V
−
Q
+
+
7.5V
#1 DRAIN
SFET
S
Thermal S/D
R
#2 GND
Q
Power on reset
OVER VOLTAGE S/D
Rev.1.0.1
©2001 Fairchild Semiconductor Corporation
KA3S0765R/KA3S0765RF
Absolute Maximum Ratings
Characteristic
Symbol
Value
Unit
VD,MAX
650
V
VDGR
650
V
VGS
±30
V
IDM
28.0
ADC
Avalanche current
IAS
20
A
Continuous drain current (TC=25°C)
ID
7.0
ADC
Continuous drain current (TC=100°C)
ID
5.6
ADC
VCC,MAX
30
V
VFB
−0.3 to VSD
V
PD (watt H/S)
140
W
Derating
1.11
W/°C
TA
−25 to +85
°C
TSTG
−55 to +150
°C
Maximum drain voltage
(1)
Drain-gate voltage (RGS=1MΩ)
Gate-source (GND) Voltage
Drain current pulsed
(2)
Maximum supply voltage
Input voltage range
Total power dissipation
Operating ambient temperature
Storage temperature
Notes:
1. Tj=25°C to 150°C
2. Repetitive rating: Pulse width limited by maximum junction temperature
3. L=24mH, VDD=50V, RG=25Ω, starting Tj=25 °C
2
KA3S0765R/KA3S0765RF
Electrical Characteristics (SFET part)
(Ta = 25°C unless otherwise specified)
Characteristic
Min.
Typ.
Max.
Unit
VGS=0V, ID=50µA
650
-
-
V
VDS=Max., Rating,
VGS=0V
-
-
50
µA
VDS=0.8Max., Rating,
VGS=0V, TC=125°C
-
-
200
mA
RDS(ON)
VGS=10V, ID=4.0A
-
1.25
1.6
W
Forward transconductance (note)
gfs
VDS=15V, ID=4.0A
3.0
-
-
S
Input capacitance
Ciss
-
1600
-
pF
-
310
-
-
120
-
-
25
-
-
55
-
-
80
-
-
50
-
-
-
72
-
9.3
-
-
29.3
-
Drain-source breakdown voltage
Symbol
BVDSS
Zero gate voltage drain current
Static drain-source on resistance (note)
IDSS
Output capacitance
Coss
Reverse transfer capacitance
Crss
Turn on delay time
td(on)
Rise time
Turn off delay time
tr
td(off)
Fall time
tf
Total gate charge
(gate-source+gate-drain)
Qg
Gate-source charge
Qgs
Gate-drain (Miller) charge
Qgd
Test condition
VGS=0V, VDS=25V,
f=1MHz
VDD=0.5BVDSS, ID=7.0A
(MOSFET switching
time are essentially
independent of
operating temperature)
VGS=10V, ID=7.0A,
VDS=0.5BVDSS (MOSFET
switching time are
essentially independent of
operating temperature)
nS
nC
Note:
Pulse test: Pulse width < 300µS, duty cycle < 2%
1
S = ---R
3
KA3S0765R/KA3S0765RF
Electrical Charcteristics (CONTROL part)
(Ta = 25°C unless otherwise specified)
Characteristic
Symbol
Test condition
Min.
Typ.
Max.
Unit
After turn on
14
9
15
10
16
11
V
V
FOSC
∆F/∆T
Dmax
Ta=25°C
−25°C≤Ta≤+85°C
-
18
92
20
±5
95
22
±10
98
kHz
%
%
IFB
VSD
Idelay
Ta=25°C, Vfb=GND
Ta=25°C, 5V≤Vfb≤VSD
0.7
6.9
1.4
0.9
7.5
1.8
1.1
8.1
2.2
mA
V
µA
VFB=2V
Sync & S/S=GND
Vfb=5V
4.7
0.8
6.0
5.0
1.0
6.4
5.3
1.2
6.8
V
mA
V
4.80
-
5.00
0.3
5.20
0.6
V
mV/°C
4.40
5.00
5.60
A
140
23
160
25
28
°C
V
UVLO SECTION
Start threshold voltage
Stop threshold voltage
VSTART
VSTOP
OSCILLATOR SECTION
Initial accuracy
Frequency change with temperature (2)
Maximum duty cycle
FEEDBACK SECTION
Feedback source current
Shutdown Feedback voltage
Shutdown delay current
SYNC. & SOFT START SECTION
Soft start voltage
Soft start current
Sync threshold voltage(3)
VSS
ISS
VSYTH
REFERENCE SECTION
Output voltage (1)
Vref
Ta=25°C
Vref/∆T
Temperature Stability (1)(2)
−25°C≤Ta≤+85°C
CURRENT LIMIT (SELF-PROTECTION) SECTION
Max. inductor current
Peak Current Limit
IOVER
PROTECTION SECTION
Thermal shutdown temperature (Tj) (1)
Over voltage protection voltage
TSD
VOVP
-
TOTAL DEVICE SECTION
Start Up current
Operating supply current
(control part only)
VCC zener voltage
ISTART
VCC=14V
0.1
0.3
0.55
mA
IOP
Ta=25°C
6
12
18
mA
VZ
ICC=20mA
30
32.5
35
V
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
KA3S0765R/KA3S0765RF
Typical Performance Characteristics
(These characteristic graphs are normalized at Ta = 25°C)
Fig.2 Feedback Source Current
Fig.1 Operating Frequency
1.2
1.15
1.1
1.05
Fosc 1
0.95
0.9
0.85
0.8
-25
0
25
50
75
100 125 150
1.2
1.15
1.1
1.05
Ifb 1
IFB
0.95
0.9
0.85
0.8
-25
0
25
Temperature [°C]
Figure 1. Operating Frequency
Fig.3 Operating Current
1.2
1.15
1.1
1.05
Iop 1
0.95
0.9
0.85
0.8
-25
100
125 150
Fig.4 Max Inductor Current
1.1
1.05
Iover
Ipeak 1
0.95
0.9
0.85
0
25
50
75
100 125 150
0.8
-25
0
25
50
75
100 125 150
Temperature [°C]
Figure 3. Operating Supply Current
Figure 4. Peak Current Limit
Fig.5 Start up Current
Fig.6 Start Threshold Voltage
1.15
1.1
1.3
1.05
1.1
IIstart
ST
V
th(H) 1
Vstart
0.9
0.95
0.7
0.5
-25
75
Figure 2. Feedback Source Current
Temperature [°C]
1.5
50
Temperature [°C]
0.9
0
25
50
75
100 125 150
Temperature [°C]
Figure 5. Start up Current
0.85
-25
0
25
50
75
100 125 150
Temperature [°C]
Figure 6. Start Threshold Voltage
5
KA3S0765R/KA3S0765RF
Typical Performance Characteristics (Continued)
(These characteristic graphs are normalized at Ta = 25°C)
Fig.7 Stop Threshold Voltage
1.15
Fig.8 Maximum Duty Cycle
1.15
1.1
1.1
1.05
1.05
Vth(L) 1
Vstop
Dmax 1
0.95
0.95
0.9
0.9
0.85
-25
0
25
50
75
100 125 150
0.85
-25
0
Temperature [°C]
Figure 7. Stop Threshold Voltage
50
75
100 125 150
Figure 8. Maximum Duty Cycle
Fig.10 Shutdown Feedback Voltage
Fig.9 Vcc Zener Voltage
1.15
1.2
1.15
1.1
1.05
Vz 1
0.95
0.9
0.85
0.8
-25
1.1
1.05
Vsd 1
0.95
0.9
0
25
50
75
100 125 150
0.85
-25
0
Temperature [°C]
50
75
100 125 150
Figure 10. Shutdown Feedback Voltage
Fig.11 Shutdown Delay Current
1.2
1.15
1.1
1.05
Idelay 1
0.95
0.9
0.85
0.8
-25
25
Temperature [°C]
Figure 9. VCC Zener Voltage
Fig.12 Over Voltage Protection
1.15
1.1
1.05
Vovp 1
0.95
0.9
0
25
50
75
100 125 150
Temperature [°C]
Figure 11. Shutdown Delay Current
6
25
Temperature [°C]
0.85
-25
0
25
50
75
100 125 150
Temperature [°C]
Figure 12. Over Voltage Protection
KA3S0765R/KA3S0765RF
Typical Performance Characteristics (Continued)
(These characteristic graphs are normalized at Ta = 25°C)
Fig.13 Soft Start Voltage
Fig.14 Drain Source Turn-on
Resistance
1.15
2.5
1.1
2
1.05
1
1.5
0.95
( )1
Rdson
0.9
0.5
Vss
0.85
-25
0
25
50
75
100 125
Figure13. Soft Start Voltage
150
0
-25
0
25
50
75
100 125 150
Figure 14. Static Drain-Source on Resistance
7
KA3S0765R/KA3S0765RF
Package Dimensions
TO-3P-5L
8
KA3S0765R/KA3S0765RF
Package Dimensions (Continued)
TO-3P-5L (Forming)
9
KA3S0765R/KA3S0765RF
Package Dimensions (Continued)
TO-3PF-5L
10
KA3S0765R/KA3S0765RF
Package Dimensions (Continued)
TO-3PF-5L(Forming)
11
KA3S0765R/KA3S0765RF
Ordering Information
Product Number
KA3S0765R-TU
KA3S0765R-YDTU
KA3S0765RF-TU
KA3S0765RF-YDTU
TU : Non Forming Type
YDTU : Forming Type
12
Package
TO-3P-5L
TO-3P-5L(Forming)
TO-3PF-5L
TO-3PF-5L(Forming)
Rating
Operating Temperature
650V, 7A
-25°C to +85°C
650V, 7A
-25°C to +85°C
KA3S0765R/KA3S0765RF
13
KA3S0765R/KA3S0765RF
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
2/5/01 0.0m 001
Stock#DSxxxxxxxx
 2001 Fairchild Semiconductor Corporation