KA5M0280RTU - Fairchild Semiconductor

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

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

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

Internal Block Diagram

32V

2.5R1R

1mA

0.1V

−

OVER VOL TAGE 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

* KA5H02 65RC

KA5x02xx-SERIES

KA5H0265RC, KA5M0265R, KA5L0265R,

KA5H02659RN/KA5M02659RN, KA5H0280R,

KA5M0280R

Fairchil d Power Swi tch(FPS)

KA5X02XX-SERIES

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

=1MΩ)V

DGR

650 V

Gate-Source (GND) Voltage V

±30 V

Drain Current Pulsed

(1)

8.0 A

Continuous Drain Current (T

=25°C) I

2.0 A

Continuous Drain Current (T

=100°C) I

1.3 A

Single Pulsed Avalanche Energy

(2)

68 mJ

Maximum Supply Voltage V

CC,MAX

30 V

Analog Input Voltage Range V

-0.3 to V

Total Power Dissipation P

42 W

Darting 0.33 W/°C

Operating Junction Temperature. T

+160 °C

Operating Ambient Temperature. T

-25 to +85 °C

Storage Temperature Range. T

STG

-55 to +150 °C

KA5x0280R

Drain-Gate Voltage (R

=1MΩ)V

DGR

800 V

Gate-Source (GND) Voltage V

±30 V

Drain Current Pulsed

(1)

8.0 A

Continuous Drain Current (T

=25°C) I

2.0 A

Continuous Drain Current (T

=100°C) I

1.3 A

Single Pulsed Avalanche Energy

(2)

90 mJ

Maximum Supply Voltage V

CC,MAX

30 V

Analog Input Voltage Range V

-0.3 to V

Total Power Dissipation P

35 W

Darting 0.28 W/°C

Operating Junction Temperature. T

+160 °C

Operating Ambient Temperature. T

-25 to +85 °C

Storage Temperature Range. T

STG

-55 to +150 °C

KA5X02XX-SERIES

Electrical Characteristics (SFET Part)

(Ta=25°C unless otherwise specified)

Note:

1. Pulse test: Pulse width ≤ 300µS, duty cycle ≤ 2%

Parameter Symbol Condition Min. Typ. Max. Unit

KA5x0265xRx

Drain-Source Breakdown Voltage BV

DSS

=0V, I

=50µA 650 - - V

Zero Gate Voltage Drain Current I

DSS

=Max. Rating, V

=0V - - 50 µA

=0.8Max. Rating,

=0V, T

=125°C- - 200 µA

Static Drain-Source on Resistance

(Note)

DS(ON)

=10V, I

=0.5A - 5.0 6.0 Ω

Forward Transconductance

(Note)

gfs V

=50V, I

=0.5A 1.5 2.5 - S

Input Capacitance Ciss V

=0V, V

=25V,

f=1MHz

- 550 - pFOutput Capacitance Coss - 38 -

Reverse Transfer Capacitance Crss - 17 -

Turn on Delay Time td(on) V

=0.5B V

DSS

, I

=1.0A

(MOSFET switching time is

essentially independent of

operating temperature)

-20-

Rise Time tr - 15 -

Turn Off Delay Time td(off) - 55 -

Fall Time tf - 25 -

Total Gate Charge

(Gate-Source+Gate-Drain) Qg V

=10V, I

=1.0A,

=0.5 B V

DSS

(MO SFE T

switching ti me is essentially

independent of operating

temperature)

--35

Gate-Source Charge Qgs - 3 -

Gate-Drain (Miller) Charge Qgd - 12 -

KA5x0280R

Drain-Source Breakdown Voltage BV

DSS

=0V, I

=50µA 800 - - V

Zero Gate Voltage Drain Current I

DSS

=Max. Rating, V

=0V - - 50 µA

=0.8Max. Rating,

=0V, T

=125°C- - 200 µA

Static Drain-Source on Resistance

(Note)

DS(ON)

=10V, I

=0.5A - 5.6 7.0

Ω

Forward Transconductance

(Note)

gfs V

=50V, I

=0.5A 1.5 2.5 - S

Input Capacitance Ciss V

=0V, V

=25V,

f=1MHz

- 250 - pFOutput Capacitance Coss - 52 -

Reverse Transfer Capacitance Crss - 25 -

Turn on Delay Time td(on) V

=0.5B V

DSS

, I

=1.0A

(MOSFET switching time is

essentially independent of

operating temperature)

-21-

Rise Time tr - 28 -

Turn Off Delay Time td(off) - 77 -

Fall Time tf - 24 -

Total Gate Charge

(Gate-Source+Gate-Drain) Qg V

=10V, I

=1.0A,

=0.5 B V

DSS

(MOS FE T

switching time is essentially

independent of operating

temperature)

--60

Gate-Source Charge Qgs - 15 -

Gate-Drain (Miller) Charge Qgd - 20 -

----=

KA5X02XX-SERIES

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

=GND 14 15 16 V

Stop Threshold Voltage V

STOP

=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

Ta=25°C, 0V ≤ Vfb ≤ 3V 0.7 0.9 1.1 mA

Shutdown Feedback Voltage V

Vfb ≤ 6.5V 6.9 7.5 8.1 V

Shutdown Delay Current Idelay Ta=25°C, 5 V ≤ Vfb ≤ V

456µA

SOFT START SECTION

Soft Start Voltage V

KA5H0265RC 4.7 5.0 5.3 V

Soft Start Current I

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

≥ 24V 25 27 29 V

Thermal Shutdown Temperature

(1)

- 140 160 - °C

TOTAL DEVICE SECTION

Start-up Current I

START

=14V - 100 170 µA

Operating Supply Current

(Control Part Only) I

OPR

≤ 28 - 7 12 mA

KA5X02XX-SERIES

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

1.05

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

1.05

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

1.05

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

1.05

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

1.05

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]

Iover

KA5X02XX-SERIES

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

1.05

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

1.05

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

1.05

1.1

1.15

1.2

-25 0 25 50 75 100 125 150

F i g.10 S hutdown Feedbac k Volt age

0.85

0.9

0.95

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

1.05

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

1.05

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

Zener Voltage Figure 10. Shu tdown Feedback Voltage

Figure 11. Shutdown Delay Current Figure 12. Ove r Voltage Protect ion

Temperature [°C] Temperature [°C]

KA5X02XX-SERIES

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

1.05

1.1

1.15

-25 0 25 50 75 100 125 150

Vss

F ig. 14 Drain Source T urn- on

Resistance

0.5

1.5

2.5

-25 0 25 50 75 100 125 150

Rdson

Temperature [°C] Temperature [°C]

()

KA5X02XX-SERIES

Package Dimensions

TO-220F-4L

KA5X02XX-SERIES

Package Dimensions

(Cont inued)

TO-220F-4L(Forming)

KA5X02XX-SERIES

Package Dimensions

(Cont inued)

8-DIP

KA5X02XX-SERIES

Package Dimensions

(Cont inued)

TO-220-5L

KA5X02XX-SERIES

Package Dimensions

(Cont inued)

TO-220-5L(Forming)

KA5X02XX-SERIES

Ordering Information

TU : Non Forming Type

YDTU : Forming Type

Product Number Package Marking Code BV

DSS

OSC

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

OSC

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

OSC

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.