Datasheet KA3S0765RF-YDTU, KA3S0765RF-TU, KA3S0765R-YDTU, KA3S0765R-TU Datasheet (Fairchild Semiconductor)

KA3S0765R/KA3S0765RF

Fairchild Power Switch(SPS)

www.fairchildsemi.com

Features

• 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

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 I C features a trimmed oscillator, under
voltage lock-out, leading edge blanking, optimized gate turn­on/turn-off driver, thermal shut down protection, over volt ­age 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.

TO-3P-5L

1

TO-3PF-5L

1

Internal Block Diagram

#3 V

CC

32V

#5 Sync

5V

#4 FB

©2001 Fairchild Semiconductor Corporation

µ

2

7.5V

25V

A

−

+

6.4V

2.5R

1mA

1R

9V

+

−

+

−

Thermal S/D

OVER VOLTAGE S/D

−

+

5V

Vref

OSC

L.E.B

0.1V

Good

logic

S
R

1. DRAIN 2. GND 3. Vcc 4. FB 5. Sync

Internal

bias

Q

S
R

Power on reset

Q

SFET

#1 DRAIN

#2 GND

Rev.1.0.1

KA3S0765R/KA3S0765RF

Absolute Maximum Ratings

Characteristic Symbol Value Unit

GS

(2)

(1)

=1MΩ)

C

=25°C)

Maximum drain voltage
Drain-gate voltage (R
Gate-source (GND) Voltage
Drain current pulsed
Avalanche current
Continuous drain current (T
Continuous drain current (TC=100°C)
Maximum supply voltage
Input voltage range

Total power dissipation

Operating ambient temperature
Storage temperature

V

D,MAX

V

DGR

V

I

DM

I

V

CC,MAX

V

(watt H/S)

P

D

Derating

T

T

STG

GS

AS

I

D

I

D

FB

650 V
650 V
±30 V

28.0 A

DC

20 A

7.0 A

5.6 A

DC
DC

30 V

−0.3 to V

SD

V

140 W

1.11 W/°C

A

−25 to +85 °C

−55 to +150 °C

Notes:

1. Tj=25°C to 150°C

2. Repetiti ve rating: Pulse width limi ted by maximum junction temp erature

3. L=24mH, V

=50V, RG=25Ω, starting Tj=25 °C

DD

2

Electrical Characteristics (SFET part)

(Ta = 25°C unless otherwise specified)

Characteristic Symbol Test condition Min. Typ. Max. Unit

Drain-source breakdown voltage BV

Zero gate voltage drain current I

Static drain-source on resistance
Forward transconductance

(note)

(note)

DSS

DSS

R

DS(ON)VGS

gfs VDS=15V, ID=4.0A
Input capacitance Ciss
Output capacitance Coss
Reverse transfer capacitance Crss
Turn on delay time t

d(on)

Rise time tr
Turn off delay time t

d(off)

Fall time tf
Total gate charge

(gate-source+gate-drain)

Qg
Gate-source charge Qgs

Gate-drain (Miller) charge Qgd

VGS=0V, ID=50µA
VDS=Max., Rating,

V
V

V

V
f=1MHz

VDD=0.5BV
(MOSFET switching
time are essentially
independent of
operating temperature)

V
V
switching time are
essentially independent of
operating temperature)

=0V

GS

=0.8Max., Rating,

DS

=0V, TC=125°C

GS

=10V, ID=4.0A

=0V, VDS=25V,

GS

DSS

=10V, ID=7.0A,

GS

=0.5BV

DS

DSS

, ID=7.0A

(MOSFET

KA3S0765R/KA3S0765RF

650 - - V

--50µA

- - 200 mA

- 1.25 1.6 W

3.0 - - S

- 1600 - pF

- 310 -

- 120 -

-25-nS

-55-

-80-

-50-

- - 72 nC

-9.3-

- 29.3 -

Note:

Pulse test: Pulse width <

1

S

--- -=

R

300µS, duty cycle < 2%

3

KA3S0765R/KA3S0765RF

Electrical Charcteristics (CONTROL part)

(Ta = 25°C unless otherwise specified)

Characteristic Symbol Test condition Min. Typ. Max. Unit

UVLO SECTION

Start threshold voltage V
Stop threshold voltage V

START

STOP

After turn on 9 10 11 V

OSCILLATOR SECTION

Initial accuracy F
Frequency change with temperature

(2)

OSC

∆F/∆T −25°C≤Ta≤+85°C-±5 ±10 %

Ta=25°C182022kHz

Maximum duty cycle Dmax - 92 95 98 %

FEEDBACK SECTION

Feedback source current I
Shutdown Feedback voltage V
Shutdown delay current I

FB

SD

delay

Ta=25°C, Vfb=GND 0.7 0.9 1.1 mA

Ta=25°C, 5V≤Vfb≤V

SYNC. & SOFT START SECTION

Soft start voltage V
Soft start current I
Sync threshold voltage

(3)

V

SS

SS

SYTH

VFB=2V 4.7 5.0 5.3 V
Sync & S/S=GND 0.8 1.0 1.2 mA
Vfb=5V 6.0 6.4 6.8 V

REFERENCE SECTION

Output voltage
Temperature Stability

(1)

(1)(2)

V

ref

V

ref/

Ta=25°C 4.80 5.00 5.20 V

∆T −25°C≤Ta≤+85°C-0.30.6mV/°C

CURRENT LIMIT (SELF-PROTECTION) SECTION

Peak Current Limit I

OVER

Max. inductor current 4.40 5.00 5.60 A

PROTECTION SECTION

Thermal shutdown temperature (Tj)

(1)

Over voltage protection voltage V

T

SD

OVP

TOTAL DEVICE SECTION

Start Up current I
Operating supply current

(control part only)
V

zener voltage V

CC

START

I

OP

Z

VCC=14V 0.1 0.3 0.55 mA
Ta=25°C 6 12 18 mA
ICC=20mA 30 32.5 35 V

-141516V

-6.97.58.1V

SD

1.4 1.8 2.2 µA

- 140 160 - °C

-232528V

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

Typical Performance Characteristics

(These characteristic graphs are normalized at Ta = 25°C)

KA3S0765R/KA3S0765RF

Fig.2 Feedback Sourc e Current

1.2

1.1

1

0.9

0.8

-25 0 25 50 75 100 125 150

Fosc

Fig.1 O per at ing Fr eque nc y

1.2

1.15

1.1

1.05
1

0.95

0.9

0.85

0.8

-25 0 25 50 75 100 125 150

Ifb

IFB

1.15

1.05

0.95

0.85

Temperature [°C] Temperature [°C]

Figure 1. Operating Frequency Figure 2. Feedback Source Current

1.2

1.15

1.1

1.05

Iop

1

0.95

0.9

0.85

0.8

-25 0 25 50 75 100 125 150

Temperature [

Fig.3 Operating Cur rent

1.1

1.05

I

over

Ipeak

0.95

0.9

0.85

0.8

] Temperature [

C

°

Fig.4 Max Inductor Current

1

-25 0 25 50 75 100 125 150

]

C

°

Figure 3. Operating Supply Current Figure 4. Peak Current Limit

I

ST

Istart

1.5

1.3

1.1

0.9

0.7

0.5

Fig.5 Start up Current

-25 0 25 50 75 100 125 150

V

th(H)

Vstart

Fig.6 Star t Threshold Voltage

1.15

1.1

1.05
1

0.95

0.9

0.85

-25 0 25 50 75 100 125 150

Temperature [°

Figure 5. Start up Current Figure 6. Start Threshold Voltage

]Temperature [°C]

C

5

KA3S0765R/KA3S0765RF

Typical Performance Characteristics (Continued)

(These characteristic graphs are normalized at Ta = 25°C)

V

th(L)

Vstop

Fig.7 Stop Threshold Voltage

1.15

1.1

1.05
1

0.95

0.9

0.85

-25 0 25 50 75 100 125 150

Dmax

F i g .8 Maxi mum D u ty Cycl e

1.15

1.1

1.05
1

0.95

0.9

0.85

-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

1.1

1.05

Vz

0.95

0.9

0.85

0.8

Fig.9 V c c Zener Voltage

1

-25 0 25 50 75 100 125 150

Temperature [°

C

] Temperature [°C]

Fig.10 Shut do wn Feedback Voltage

1.15

1.1

1.05

Vsd

1

0.95

0.9

0.85

-25 0 25 50 75 100 125 150

Idelay

Figure 9. V

Fig.11 Shut do wn Delay Current

1.2

1.15

1.1

1.05
1

0.95

0.9

0.85

0.8

-25 0 25 50 75 100 125 150

Zener Voltage Figure 10. Shutdown Feedback Voltage

CC

Fig.12 Over Voltage Prot ec tion

1.15

1.1

1.05

Vovp

1

0.95

0.9

0.85

-25 0 25 50 75 100 125 150

Temperature [°

]Temperature [°C]

C

Figure 11. Shutdown Delay Current Figure 12. Over Voltage Protection

6

Typical Performance Characteristics (Continued)

(These characteristic graphs are normalized at Ta = 25°C)

KA3S0765R/KA3S0765RF

1.15

1.1

1.05

Vss

1

0.95

0.9

0.85

-25 0 25 50 75 100 125 150

Figure13. Soft Start Voltage

Fig.13 Soft Start Voltage

Fig.14 Drain Sour c e Turn-on

Resistance

2.5
2

1.5

(

)

Rdson

1

0.5
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 Package Rating Operating Temperature

KA3S0765R-TU TO-3P-5L
KA3S0765R-YDTU TO-3P-5L(Forming)

650V, 7A -25°C to +85°C

KA3S0765RF-TU TO-3PF-5L
KA3S0765RF-YDTU TO-3PF-5L(Forming)

TU : Non Forming Type
YDTU : Forming Type

650V, 7A -25°C to +85°C

12

KA3S0765R/KA3S0765RF

13

KA3S0765R/KA3S0765RF

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURT HER NOTICE TO ANY
PRODUCTS HEREI N TO IMPROVE RELIABILITY, FUNCTIO N OR DESIGN. FAIRCH IL D 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 IT S PATENT RIGHTS, NOR THE RIGHTS OF OTHE RS.

LIFE SUPPORT POL I CY

FAIRCHILD’S PR ODUCTS ARE NOT AUTH ORIZED FOR USE AS C RITICAL COMPONENT S IN LIFE SUPPORT DE VICES
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

2. A critical component in any component of a life support
device or sy stem whose fai lure to perform can be
reasonably expec ted to cause the failur e of the life support
device or system, or to affect its safety or effec t iv ene ss .

instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.

www.fairchildsemi.com

2/5/01 0.0m 001

 2001 Fairchild Semiconductor Corporation

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