www.fairchildsemi.com

Rev.1.0.2

Features

· Precision fixed operating frequency (100 / 67 / 50KHz )
· Pulse by pulse current limiting
· Over current protection
· Over voltage protection (Min. 25V) -KA5x0165R/RN/RI
· Internal thermal shutdown function
· Under voltage lockout
· Internal high voltage sense FET
· Auto-restart mode

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 blanking, optimized gate turn-on/
turn-off 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

switching converter solution, aFairchild 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

8-DIP

I2-PAK-5L

1. GND

2. Drain
3. Vcc
4. FB
5. S/S

1.6.7.8. Drain
2. GND
3. Vcc
4. FB
5. NC

1. GND
2. Drain
3. Vcc
4. FB

Internal Block Diagram

32V

2.5R

1mA

0.1V

OVER VOLTAGE S/D

7.5V

27V

Thermal S/D

Power on reset

L.E.B

OSC

Vref

Internal

bias

Good

logic

SFET

DRAIN

GND

Soft Start

KA5x0165Rxx-SERIES

KA5H0165R/RN, KA5M0165R/RN/RI, KA5L0165R/

RN/RI/KA5H0165RV/RVN, KA5M0165RV/RVN,

KA5L0165RV/RVN

Fairchild Power Switch(FPS)

KA5X0165RXX-SERIES

Absolute Maximum Ratings

(Ta=25

C, unless otherwise specified)

Note:
1. Repetitive rating: Pulse width limited by maximum junction temperature
2. L=24mH, starting Tj=25

Characteristic

Symbol

Value

Unit

Maximum Drain Voltage

D,MAX

650

Drain-Gate Voltage (R

=1M

)

DGR

650

Gate-Source (GND) Voltage

Drain Current Pulsed

(1)

4.0

Continuous Drain Current (T

=25

1.0

Continuous Drain Current (T

=100

0.7

Single Pulsed Avalanche Energy

(2)

Maximum Supply Voltage

CC,MAX

Analog Input Voltage Range

0.3 to V

Total Power Dissipation

Derating

0.32

Operating Junction Temperature.

+160

Operating Ambient Temperature.

25 to +85

Storage Temperature Range.

STG

55 to +150

KA5X0165RXX-SERIES

Electrical Characteristics (SFET part)

(Ta=25

C unless otherwise specified)

Note:
Pulse test: Pulse width

300

S, duty cycle

Parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

rain-source breakdown voltage

DSS

=0V, I

=50

650

ero gate voltage drain current

DSS

=Max. Rating, V

=0V

=0.8Max. Rating,

=0V, T

=125

200

Static drain-source on resistance

(note)

DS(ON)

=10V, I

=0.5A

Forward transconductance

(note)

gfs

=50V, I

=0.5A

0.5

Input capacitance

Ciss

=0V, V

=25V,

f=1MHz

250

Output capacitance

Coss

Reverse transfer capacitance

Crss

Turn on delay time

td(on)

=0.5BV

DSS

, I

=1.0A

(MOSFET switching
time are essentially
independent of
operating temperature)

Rise time

Turn off delay time

td(off)

Fall time

Total gate charge
(gate-source+gate-drain)

=10V, I

=1.0A,

=0.5BV

DSS

(MOSFET

switching time are
essentially independent of
operating temperature)

Gate-source charge

Qgs

Gate-drain (Miller) charge

Qgd

----

KA5X0165RXX-SERIES

Electrical Characteristics (CONTROL part)

(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

START

=GND

Stop Threshold Voltage

STOP

=GND

8.4

9.6

OSCILLATOR SECTION
Initial accuracy

OSC

KA5H0165Rxx

100

110

kHz

Initial accuracy

OSC

KA5M0165Rxx

kHz

Initial accuracy

OSC

KA5L0165Rxx

kHz

Frequency change with temperature

(2)

+85

Maximum duty cycle

Dmax

KA5H0165Rxx

Maximum duty cycle

Dmax

KA5M0165Rxx
KA5L0165Rxx

FEEDBACK SECTION
Feedback source current

Ta=25

C, 0V<Vfb<3V

0.7

0.9

1.1

Shutdown feedback voltage

Vfb>6.5V

6.9

7.5

8.1

Shutdown delay current

Idelay

Ta=25

C, 3V

Vfb

SOFT START SECTION
Soft Start Voltage

KA5x0165RI

4.7

5.0

5.3

Soft Start Current

0.8

1.0

1.2

REFERENCE SECTION
Output voltage

(1)

Vref

Ta=25

4.80

5.00

5.20

Temperature Stability

(1)(2)

Vref/

+85

0.3

0.6

mV/

CURRENT LIMIT(SELF-PROTECTION)SECTION
Peak Current Limit

OVER

Max. inductor current

0.53

0.6

0.67

PROTECTION SECTION
Thermal shutdown temperature (Tj)

(1)

140

160

Over voltage protection

OVP

KA5x0165R/RN/RI

TOTAL STANDBY CURRENT SECTION
Start Up Current

START

=14V

100

170

Operating supply current
(control part only)

<28

KA5X0165RXX-SERIES

Typical Performance Characteristics

(These characteristic graphs are normalized at Ta=25

Fig.1 Operating Frequency

0.8

0.85

0.9

0.95

1.05

1.1

1.15

1.2

-25

100 125 150

Fosc

Fig.2 Feedback Source Current

0.8

0.85

0.9

0.95

1.05

1.1

1.15

1.2

-25

100 125 150

Ifb

Fig.3 Operating Current

0.8

0.85

0.9

0.95

1.05

1.1

1.15

1.2

-25

100 125 150

Iop

Fig.4 Max Inductor Current

0.8

0.85

0.9

0.95

1.05

1.1

-25

100 125 150

Ipeak

Fig.5 Start up Current

0.5

0.7

0.9

1.1

1.3

1.5

-25

100 125 150

Istart

Fig.6 Start Threshold Voltage

0.85

0.9

0.95

1.05

1.1

1.15

-25

75 100 125 150

Vstart

Figure 1. Operating Frequency

Figure 2. Feedback Source Current

Figure 3. Operating Supply Current

Figure 4. Peak Current Limit

Figure 5. Start up Current

Figure 6. Start Threshold Voltage

Temperature [

over

KA5X0165RXX-SERIES

Typical Performance Characteristics

(Continued)

(These characteristic graphs are normalized at Ta=25

°
°
°
°

Fig.7 Stop Threshold Voltage

0.85

0.9

0.95

1.05

1.1

1.15

-25

100 125 150

Vstop

Fig.8 Maximum Duty Cycle

0.85

0.9

0.95

1.05

1.1

1.15

-25

75 100 125 150

Dmax

Fig.9 Vcc Zener Voltage

0.8

0.85

0.9

0.95

1.05

1.1

1.15

1.2

-25

100 125 150

Fig.10 Shutdown Feedback Voltage

0.85

0.9

0.95

1.05

1.1

1.15

-25

100 125 150

Vsd

Fig.11 Shutdown Delay Current

0.8

0.85

0.9

0.95

1.05

1.1

1.15

1.2

-25

100 125 150

Idelay

Fig.12 Over Voltage Protection

0.85

0.9

0.95

1.05

1.1

1.15

-25

100 125 150

Vovp

Figure 7. Stop Threshold Voltage

Figure 8. Maximum Duty Cycle

Figure 9. V

Zener Voltage

Figure 10. Shutdown Feedback Voltage

Figure 11. Shutdown Delay Current

Figure 12. Over Voltage Protection

Temperature [

KA5X0165RXX-SERIES

Typical Performance Characteristics

(Continued)

(These characteristic graphs are normalized at Ta=25

Figure13. Soft Start Voltage

Figure 14. Static Drain-Source on Resistance

Fig.13 Soft Start Voltage

0.85

0.9

0.95

1.05

1.1

1.15

-25

100 125 150

Vss

Fig.14 Drain Source Turn-on

Resistance

0.5

1.5

2.5

-25

75 100 125 150

Rdson

Temperature [

( )

KA5X0165RXX-SERIES

Ordering Information

TU : Non Forming Type
YDTU : Forming Type

Product Number

Package

Marking Code

DSS

OSC

DS(on)

KA5H0165R-TU

TO-220F-4L

5H0165R

650V

100kHz

KA5H0165R-YDTU

TO-220F-4L(Forming)

KA5M0165R-TU

TO-220F-4L

5M0165R

650V

67kHz

KA5M0165R-YDTU

TO-220F-4L(Forming)

KA5L0165R-TU

TO-220F-4L

5L0165R

650V

50kHz

KA5L0165R-YDTU

TO-220F-4L(Forming)

KA5H0165RN

8-DIP

5H0165R

650V

100kHz

KA5M0165RN

8-DIP

5M0165R

650V

67kHz

KA5L0165RN

8-DIP

5L0165R

650V

50kHz

KA5M0165RI-TU

-PAK-5L

5M0165RI

650V

67kHz

KA5M0165RI-YDTU

-PAK-5L(Forming)

KA5L0165RI-TU

-PAK-5L

5L0165RI

650V

50kHz

KA5L0165RI-YDTU

-PAK-5L(Forming)

Product Number

Package

Marking Code

DSS

OSC

DS(on)

KA5H0165RV-TU

TO-220F-4L

5H0165RV

650V

100kHz

KA5H0165RV-YDTU TO-220F-4L(Forming)

KA5M0165RV-TU

TO-220F-4L

5M0165RV

650V

67kHz

KA5M0165RV-YDTU TO-220F-4L(Forming)

KA5L0165RV-TU

TO-220F-4L

5L0165RV

650V

50kHz

KA5L0165RV-YDTU

TO-220F-4L(Forming)

KA5H0165RVN

8-DIP

5H0165RV

650V

100kHz

KA5M0165RVN

8-DIP

5M0165RV

650V

67kHz

KA5L0165RVN

8-DIP

5L0165RV

650V

50kHz

KA5X0165RXX-SERIES

11/23/01 0.0m 001

Stock#DSxxxxxxxx

2001 Fairchild Semiconductor Corporation

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CORPORATION. As used herein:

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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.

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DISCLAIMER
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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

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