©2003 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev.1.0.4
Features
• Precision Fixed Operating Frequency (100/67/50kHz)
• Low Start-up Current (Typ. 100uA)
• Pulse by Pulse Current Limiting
• Over Load Protectio n
• Over Voltage Protection (Min. 25V)
• Internal Thermal Shutdown Function
• Unde r Voltage Lo ck out
• Internal High Voltage Sense FET
• Auto- Re st art Mo de
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 IC. Included
PWM controller features integrated fixed oscillator, under
voltage lock out, leading edge bl anking, optimized gate turn-on /
turn-of f driver, thermal shut down protection, over voltage
protection, and temperature compensated precision current
sources for loop compensation and fault protection circuitry-
compared to discrete MOSFET and controller or R
CC
switching converter solution. The Fairchild Power Switch(F PS)
can reduce total component count, design size, weight and at the
same time increase efficiency , produc tivity, 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 8-DIP TO220-5L
1
111. Drain
2. GND
3. Vcc
4. FB
5. S/S
1.6.7.8. Dra in
2. GND
3. Vcc
4. FB
5. NC
1. GND
2. Drain
3. Vcc
4. FB
uA
Internal Block Diagram
V
CC
32V
5
µ
A
5V
2.5R1R
1mA
0.1V
+
−
OVER VOL TAGE S/D
+
−
7.5V
27V
Thermal S/D
S
RQ
Power on reset
+
−
L.E.B
S
RQ
OSC
5V
Vref Internal
bias
Good
logic
SFET DRAIN
GND
FB
Soft Start
9V
*
* KA5H02 65RC
KA5x02xx-SERIES
KA5H0265RC, KA5M0265R, KA5L0265R,
KA5H02659RN/KA5M02659RN, KA5H0280R,
KA5M0280R
Fairchil d Power Swi tch(FPS)
KA5X02XX-SERIES
2
Absolute Maximum Ratings
(Ta=25°C, unless otherwise specified)
Note:
1. Repetitive rating: Pulse width limited by maximum junction temperature
2. L = 51mH, startin g Tj = 25°C
Characteristic Symbol Value Unit
KA5x0265xRx
Drain-Gate Voltage (R
GS
=1MΩ)V
DGR
650 V
Gate-Source (GND) Voltage V
GS
±30 V
Drain Current Pulsed
(1)
I
DM
8.0 A
DC
Continuous Drain Current (T
C
=25°C) I
D
2.0 A
DC
Continuous Drain Current (T
C
=100°C) I
D
1.3 A
DC
Single Pulsed Avalanche Energy
(2)
E
AS
68 mJ
Maximum Supply Voltage V
CC,MAX
30 V
Analog Input Voltage Range V
FB
-0.3 to V
SD
V
Total Power Dissipation P
D
42 W
Darting 0.33 W/°C
Operating Junction Temperature. T
J
+160 °C
Operating Ambient Temperature. T
A
-25 to +85 °C
Storage Temperature Range. T
STG
-55 to +150 °C
KA5x0280R
Drain-Gate Voltage (R
GS
=1MΩ)V
DGR
800 V
Gate-Source (GND) Voltage V
GS
±30 V
Drain Current Pulsed
(1)
I
DM
8.0 A
DC
Continuous Drain Current (T
C
=25°C) I
D
2.0 A
DC
Continuous Drain Current (T
C
=100°C) I
D
1.3 A
DC
Single Pulsed Avalanche Energy
(2)
E
AS
90 mJ
Maximum Supply Voltage V
CC,MAX
30 V
Analog Input Voltage Range V
FB
-0.3 to V
SD
V
Total Power Dissipation P
D
35 W
Darting 0.28 W/°C
Operating Junction Temperature. T
J
+160 °C
Operating Ambient Temperature. T
A
-25 to +85 °C
Storage Temperature Range. T
STG
-55 to +150 °C
KA5X02XX-SERIES
3
Electrical Characteristics (SFET Part)
(Ta=25°C unless otherwise specified)
Note:
1. Pulse test: Pulse width ≤ 300µS, duty cycle ≤ 2%
2.
Parameter Symbol Condition Min. Typ. Max. Unit
KA5x0265xRx
Drain-Source Breakdown Voltage BV
DSS
V
GS
=0V, I
D
=50µA 650 - - V
Zero Gate Voltage Drain Current I
DSS
V
DS
=Max. Rating, V
GS
=0V - - 50 µA
V
DS
=0.8Max. Rating,
V
GS
=0V, T
C
=125°C- - 200 µA
Static Drain-Source on Resistance
(Note)
R
DS(ON)
V
GS
=10V, I
D
=0.5A - 5.0 6.0 Ω
Forward Transconductance
(Note)
gfs V
DS
=50V, I
D
=0.5A 1.5 2.5 - S
Input Capacitance Ciss V
GS
=0V, V
DS
=25V,
f=1MHz
- 550 - pFOutput Capacitance Coss - 38 -
Reverse Transfer Capacitance Crss - 17 -
Turn on Delay Time td(on) V
DD
=0.5B V
DSS
, I
D
=1.0A
(MOSFET switching time is
essentially independent of
operating temperature)
-20-
nS
Rise Time tr - 15 -
Turn Off Delay Time td(off) - 55 -
Fall Time tf - 25 -
Total Gate Charge
(Gate-Source+Gate-Drain) Qg V
GS
=10V, I
D
=1.0A,
V
DS
=0.5 B V
DSS
(MO SFE T
switching ti me is essentially
independent of operating
temperature)
--35
nC
Gate-Source Charge Qgs - 3 -
Gate-Drain (Miller) Charge Qgd - 12 -
KA5x0280R
Drain-Source Breakdown Voltage BV
DSS
V
GS
=0V, I
D
=50µA 800 - - V
Zero Gate Voltage Drain Current I
DSS
V
DS
=Max. Rating, V
GS
=0V - - 50 µA
V
DS
=0.8Max. Rating,
V
GS
=0V, T
C
=125°C- - 200 µA
Static Drain-Source on Resistance
(Note)
R
DS(ON)
V
GS
=10V, I
D
=0.5A - 5.6 7.0
Ω
Forward Transconductance
(Note)
gfs V
DS
=50V, I
D
=0.5A 1.5 2.5 - S
Input Capacitance Ciss V
GS
=0V, V
DS
=25V,
f=1MHz
- 250 - pFOutput Capacitance Coss - 52 -
Reverse Transfer Capacitance Crss - 25 -
Turn on Delay Time td(on) V
DD
=0.5B V
DSS
, I
D
=1.0A
(MOSFET switching time is
essentially independent of
operating temperature)
-21-
nS
Rise Time tr - 28 -
Turn Off Delay Time td(off) - 77 -
Fall Time tf - 24 -
Total Gate Charge
(Gate-Source+Gate-Drain) Qg V
GS
=10V, I
D
=1.0A,
V
DS
=0.5 B V
DSS
(MOS FE T
switching time is essentially
independent of operating
temperature)
--60
nC
Gate-Source Charge Qgs - 15 -
Gate-Drain (Miller) Charge Qgd - 20 -
S1
R
----=
KA5X02XX-SERIES
4
Electrical Characteristics (Control Part)
(Continued)
(Ta=25°C unless otherwise specified)
Note:
1. These parameters, although guaranteed, are not 100% tested in production
2. These parameters, although guaranteed, are tested in EDS (wafer test) process
Parameter Symbol Condition Min. Typ. Max. Unit
UVLO SECTION
Start Threshold Voltage V
START
V
FB
=GND 14 15 16 V
Stop Threshold Voltage V
STOP
V
FB
=GND 8.2 8.8 9.4 V
OSCILLATOR SECTION
Initial Accuracy F
OSC
KA5H0265xRx
KA5H0280R 90 100 110 kHz
Initial Accuracy F
OSC
KA5M0265xRx
KA5M0280R 61 67 73 kHz
Initial Accuracy F
OSC
KA5L0265R 45 50 55 kHz
Frequency Change With Temperature
(2)
∆F/∆T-25°C ≤ Ta ≤ +85°C-±5±10 %
Maximum Duty Cycle Dmax KA5H0265xRx
KA5H0280R 62 67 72 %
Maximum Duty Cycle Dmax KA5M0265xRx
KA5M0280R
KA5L0265R 72 77 82 %
FEEDBACK SECTION
Feedback Source Current I
FB
Ta=25°C, 0V ≤ Vfb ≤ 3V 0.7 0.9 1.1 mA
Shutdown Feedback Voltage V
SD
Vfb ≤ 6.5V 6.9 7.5 8.1 V
Shutdown Delay Current Idelay Ta=25°C, 5 V ≤ Vfb ≤ V
SD
456µA
SOFT START SECTION
Soft Start Voltage V
SS
KA5H0265RC 4.7 5.0 5.3 V
Soft Start Current I
SS
0.8 1.0 1.2 mA
REFERENCE SECTION
Output Voltage
(1)
Vref Ta=25°C 4.80 5.00 5.20 V
Temperature Stability
(1)(2)
Vref/∆T-25°C ≤ Ta ≤ +85°C-0.30.6mV/°C
CURRENT LIMIT(SELF-PROTECTION)SECTION
Peak Current Limit I
OVER
KA5x02659RN 0.79 0.9 1.01 A
Peak Current Limit I
OVER
KA5x0265Rx
KA5x0280R 1.05 1.2 1.34 A
PROTECTION SECTION
Over Voltage Protection V
OVP
V
CC
≥ 24V 25 27 29 V
Thermal Shutdown Temperature
(1)
T
SD
- 140 160 - °C
TOTAL DEVICE SECTION
Start-up Current I
START
V
CC
=14V - 100 170 µA
Operating Supply Current
(Control Part Only) I
OPR
V
CC
≤ 28 - 7 12 mA
KA5X02XX-SERIES
5
Typical Performance Characteristics
(These characteristic graphs are normalized at Ta=25°C)
Fig. 1 Oper ating Fre quen c y
0.8
0.85
0.9
0.95
1
1.05
1.1
1.15
1.2
-25 0 25 50 75 100 125 150
Fosc
Fig. 2 Feedback Sourc e Curren t
0.8
0.85
0.9
0.95
1
1.05
1.1
1.15
1.2
-25 0 25 50 75 100 125 150
Ifb
Fig. 3 Oper ating Cur rent
0.8
0.85
0.9
0.95
1
1.05
1.1
1.15
1.2
-25 0 25 50 75 100 125 150
Iop
F ig. 4 Max Induct or Cur r ent
0.8
0.85
0.9
0.95
1
1.05
1.1
-25 0 25 50 75 100 125 150
Ipeak
Fig. 5 S t ar t up Curr ent
0.5
0.7
0.9
1.1
1.3
1.5
-25 0 25 50 75 100 125 150
Istart
Fig.6 Star t Thre shold Voltage
0.85
0.9
0.95
1
1.05
1.1
1.15
-25 0 25 50 75 100 125 150
Vstart
Figure 1. Operating Frequency Figure 2. Feedback Sourc e Current
Figure 3. Operating Supply Current Figur e 4. Peak Current Limit
Figure 5. Start up C urrent Figure 6. Start Threshold Voltage
Temperature [°C] Temperature [°C]
Temperature [°C] Temperature [°C]
Temperature [°C] Temperature [°C]
Iover
KA5X02XX-SERIES
6
Typical Performance Characteristics
(Continued)
(These characteristic graphs are normalized at Ta=25°C)
F i g.7 Stop Thr eshold Voltage
0.85
0.9
0.95
1
1.05
1.1
1.15
-25 0 25 50 75 100 125 150
Vstop
F i g.8 Maximum Dut y Cycle
0.85
0.9
0.95
1
1.05
1.1
1.15
-25 0 25 50 75 100 125 150
Dmax
Fig. 9 Vcc Zener Voltage
0.8
0.85
0.9
0.95
1
1.05
1.1
1.15
1.2
-25 0 25 50 75 100 125 150
Vz
F i g.10 S hutdown Feedbac k Volt age
0.85
0.9
0.95
1
1.05
1.1
1.15
-25 0 25 50 75 100 125 150
Vsd
F ig. 11 Shut down Delay Current
0.8
0.85
0.9
0.95
1
1.05
1.1
1.15
1.2
-25 0 25 50 75 100 125 150
Idelay
F ig.12 O ver Voltage P r otec tion
0.85
0.9
0.95
1
1.05
1.1
1.15
-25 0 25 50 75 100 125 150
Vovp
Figure 7. Stop Threshold Voltage Figure 8. Maximum Duty Cycle
Figure 9. V
CC
Zener Voltage Figure 10. Shu tdown Feedback Voltage
Figure 11. Shutdown Delay Current Figure 12. Ove r Voltage Protect ion
Temperature [°C] Temperature [°C]
Temperature [°C] Temperature [°C]
Temperature [°C] Temperature [°C]
KA5X02XX-SERIES
7
Typical Performance Characteristics
(Continued)
(These characteristic graphs are normalized at Ta=25°C)
Figure13. Soft Start Voltage Figure 14. Static Drain- Source on Resistance
Fig.13 Soft Start Voltage
0.85
0.9
0.95
1
1.05
1.1
1.15
-25 0 25 50 75 100 125 150
Vss
F ig. 14 Drain Source T urn- on
Resistance
0
0.5
1
1.5
2
2.5
-25 0 25 50 75 100 125 150
Rdson
Temperature [°C] Temperature [°C]
()
KA5X02XX-SERIES
8
Package Dimensions
TO-220F-4L
KA5X02XX-SERIES
9
Package Dimensions
(Cont inued)
TO-220F-4L(Forming)
KA5X02XX-SERIES
10
Package Dimensions
(Cont inued)
8-DIP
KA5X02XX-SERIES
11
Package Dimensions
(Cont inued)
TO-220-5L
KA5X02XX-SERIES
12
Package Dimensions
(Cont inued)
TO-220-5L(Forming)
KA5X02XX-SERIES
13
Ordering Information
TU : Non Forming Type
YDTU : Forming Type
Product Number Package Marking Code BV
DSS
F
OSC
R
DS(on)
KA5H0265RCTU TO-220-5L 5H0265RC 650V 100kHz 5Ω
KA5H0265RCYDTU TO-220-5L(Forming)
KA5M0265RTU TO-220F-4L 5M0265R 650V 67kHz 5Ω
KA5M0265RYDTU TO-220F-4L(Forming)
KA5L0265RTU TO-220F-4L 5L0265R 650V 50kHz 5Ω
KA5L0265RYDTU TO-220F-4L(Forming)
Product Number Package Marking Code BV
DSS
F
OSC
R
DS(on)
KA5H0280RTU TO-220F-4L 5H0280R 800V 100kHz 5.6Ω
KA5H0280RYDTU TO-220F-4L(Forming)
KA5M0280RTU TO-220F-4L 5M0280R 800V 67kHz 5.6Ω
KA5M0280RYDTU TO-220F-4L(Forming)
Product Number Package Marking Code BV
DSS
F
OSC
R
DS(on)
KA5H02659RN 8-DIP 5H02659R 650V 100kHz 5Ω
KA5M02659RN 8-DIP 5M02659R 650V 67kHz 5Ω
KA5X02XX-SERIES
8/25/03 0.0m 001
Stock#DSxxxxxxxx
2003 Fairchild Semiconductor Corporation
LIFE SU PP ORT POL ICY
FAIRCHILD’ S PRODUCTS ARE NOT AUTHORIZ ED FOR USE AS CRI TICAL C OMPONENTS IN LIFE SUPP ORT DEVI CES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORA TION. As used he rein :
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 syst em who se fai lure to pe rform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effec tiv ene ss.
www.fairchildsemi.com
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MA KE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRO DUCTS HEREIN TO IMPROVE RELIABILITY, FUN CTION OR DESIG N. FAIRCHILD DO ES 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 RIG HTS, NOR THE RIGHTS OF OT HERS.
