Datasheet KA1M0965R Datasheet (Fairchild Semiconductor)

KA1M0965R

Fairchi ld Pow er Sw itch( FP S)

www.fairchildsemi.com

Features

• Precision Fixed Operating Frequency (67kHz)

• Pulse by Pulse Over Current Limiting

• Over Load Protection

• Over Voltage Protection (Min. 23V)

• Internal Thermal Shutdown Function

• Under Voltage Lockout

• Internal High Voltage Sense FET

•Auto Restart

•Soft Start

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
controller IC. 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, temperature compensated
precision current sources for loop compensation and fault
protection circuit. compared to discrete MOSFET and
controller or R
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-3P-5L

1

1. DRAIN 2. GND 3. V

switching converter solution, a Fairchild

CC

4. FB 5. S/S

CC

Internal Block Diagram

#3 V

CC

32V

#5 Soft Start

5V

#4 FB

©2003 Fairchild Semiconductor Corporation

µ

5

7.5V

25V

A

2.5R

1mA

1R

5V

+

−

+

−

Thermal S/D

OVER VOLTAGE S/D

OSC

−

+

5V

Vref

L.E.B

0.1V

Good

logic

S
R

Internal

bias

Q

S
R

Power on reset

#1 DRAIN

SFET

Q

#2 GND

Rev.1.0.3

KA1M0965R

Absolute Maximum Ratings

Parameter Symbol Value Unit

Drain Gate Voltage (R
Gate-Source (GND) Voltage V
Drain Current Pulsed
Single Pulsed Avalanche Energy
Continuous Drain Current (T
Continuous Drain Current (TC=100°C) I
Maximum Supply Voltage V
Input Voltage Range V

Total Power Dissipation
Operating Ambient Temperature T

Storage Temperature T

Notes:

1. T

= 25°C to 150°C

j

2. Repetitive rating: Pulse width limited by maximum junction temperature

3. L = 20mH, V

= 50V, RG = 27Ω, starting Tj = 25°C

DD

=1MΩ)V

GS

(2)

(3)

=25°C) I

C

DGR

GS

I

DM

E

AS

D
D

CC,MAX

FB

P

D

Darting 1.33 W/°C

A

STG

650 V
±30 V

36.0 A
950 mJ

9.0 A

5.8 A
30 V

-0.3 to V

SD

170 W

-25 to +85 °C

-55 to +150 °C

DC

DC
DC

V

2

KA1M0965R

Electrical Characteristics (SFET part)

(Ta=25°C unless otherwise specified)

Parameter Symbol 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=4.5A 5.0 - - S

Input Capacitance Ciss

Reverse Transfer Capacitance Crss - 78 ­Turn on Delay Time t

d(on)

Rise Time tr - 23 55
Turn Off Delay Time t

d(off)

Fall Time tf - 30 70
Total Gate Charge

(Gate-Source+Gate-Drain)

Qg

Gate-Source Charge Qgs - 12 ­Gate-Drain (Miller) Charge Qgd - 35.4 -

VGS=0V, ID=50µA 650 - - V
VDS=Max., Rating, VGS=0V - - 50 µA
V

=0.8Max., Rating,

DS

V

=0V, TC=125°C

GS

- - 200 µA

=10V, ID=4.5A - 0.96 1.2

- 1750 -

V

=0V, VDS=25V,

GS

f=1MHz

VDD=0.5BV

DSS

, ID=9.0A

-2050
(MOSFET switching
time are essentially
independent of

- 85 180
operating temperature)
V

=10V, ID=9.0A,

V

GS
DS

=0.5BV

(MOSFET

DSS

-7475
switching time are essentially

independent of
operating temperature)

Ω

pFOutput Capacitance Coss - 190 -

nS

nC

Note:

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

2.

1

S

--- -=

R

3

KA1M0965R

Electrical Characteristics (Control Part)

(Continued)

(Ta=25°C unless otherwise specified)

Parameter Symbol Condition Min. Typ. Max. Unit
UVLO SECTION

Start Threshold Voltage V
Stop Threshold Voltage V

START

STOP

After turn on 9 10 11 V

- 14 15 16 V

OSCILLATOR SECTION

Initial Accuracy F
Frequency Change With Temperature

(2)

OSC

∆F/∆T-25°C ≤ Ta ≤ +85°C-±5 ±10 %

Ta=25°C 616773kHz

Maximum Duty Cycle Dmax - 74 77 80 %

FEEDBACK SECTION

Feedback Source Current I
Shutdown Feedback Voltage V

FB

SD

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

Ta=25°C, 0V ≤ Vfb ≤ 3V 0.7 0.9 1.1 mA

- 6.9 7.5 8.1 V

4.0 5.0 6.0 µA

SD

SOFT START SECTION

V

Soft Start Voltage V
Soft Start Current I

SS

SS

=2V 4.7 5.0 5.3 V

FB

Sync & S/S=GND 0.8 1.0 1.2 mA

REFERENCE SECTION

Output Voltage

(1)

Temperature Stability

(1)(2)

Vref Ta=25°C 4.80 5.00 5.20 V

Vref/∆T-25°C ≤ Ta ≤ +85°C-0.30.6mV/°C

CURRENT LIMIT (SELF-PROTECTION) SECTION

Peak Current Limit I

OVER

Max. inductor current 5.28 6.00 6.72 A

PROTECTION SECTION

Thermal Shutdown Temperature (Tj)
Over Voltage Protection Voltage V

(1)

T

SD

OVP

- 140 160 - °C

- 23 25 28 V

TOTAL DEVICE SECTION

Start-Up Current I
Operating Supply Current

(Control Part Only)

Zener Voltage V

V

CC

START

I

OP

Z

VCC=14V 0.1 0.3 0.4 mA
Ta=25°C 6 12 18 mA
ICC=20mA 30 32.5 35 V

Notes:

1. These parameters, although guaranteed, are not 100% tested in production

2. These parameters, although guaranteed, are tested in EDS (wafer 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)

KA1M0965R

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

Temperature [ °C] Temperature [°C]

Figure 1. Operating Frequency Figure 2. Feedback Sour ce Current

Fig.3 Oper ating 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.2 Feedbac k S our c e Cur r ent

1.2

1.15

1.1

1.05

Ifb

1

IFB

0.95

0.9

0.85

0.8

-25 0 25 50 75 100 125 150

1.1

1.05

I

over

Ipeak

0.95

0.9

0.85

0.8

C

] Temperature [°C]

Fig.4 Max Inductor Cur r ent

1

-25 0 25 50 75 100 125 150

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 S tart up Current

-25 0 25 50 75 100 125 150

V

th(H)

Vstart

Fig. 6 S tart Threshold Volt a ge

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 C u rrent Figure 6. Start Threshold Voltage

C

]Temperature [°C]

5

KA1M0965R

Typical Performance Characteristics

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

Fig.7 S top Threshold Volt a ge

1.15

1.1

1.05

V

th(L)

Vstop

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 Vcc Zener Voltage

1

-25 0 25 50 75 100 125 150

C

Temperature [ °

] Temperature [°C]

(Continued)

Dmax

Vsd

F i g.8 Ma xi mu m Dut y Cycle

1.15

1.1

1.05
1

0.95

0.9

0.85

-25 0 25 50 75 100 125 150

Fig.10 S hutdown Feedback Voltage

1.15

1.1

1.05
1

0.95

0.9

0.85

-25 0 25 50 75 100 125 150

Idelay

Figure 9. V

Fig.11 Shutdown Delay Cur r ent

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 Pr otectio n

1.15

1.1

1.05

Vovp

1

0.95

0.9

0.85

-25 0 25 50 75 100 125 150

Temperature [°

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

C

]Temperature [°C]

6

KA1M0965R

Typical Performance Characteristics

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

1.15

1.1

1.05

Vss

0.95

0.9

0.85

Fig.13 Sof t Start V oltage

1

-25 0 25 50 75 100 125 150

Temperature [°C] Temperature [°C]

Figure 13. So ft Start Voltage Figure 14. Static Drain Source on Resistance

(Continued)

Rdson

Fig.14 Dr ain Sour c e T ur n- on

Res istance

2.5
2

1.5

)

(

1

0.5
0

-25 0 25 50 75 100 125 150

7

KA1M0965R

Package Dimensions

TO-3P-5L

8

KA1M0965R

Package Dimensions

(Continued)

TO-3P-5L (Forming)

9

KA1M0965R

Ordering Information

Product Number Package Rating Operating Temperature

KA1M0965RTU TO-3P-5L
KA1M0965RYDTU TO-3P-5L(Forming)

TU : Non Forming Type
YDTU : Forming Type

650V, 9A -25°C to +85°C

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHA NGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREI N TO IMPROVE RELIABILITY, FUNCTIO N OR DESIGN. FAIRCH ILD 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 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

2. A critical component in any component of a life support
device or sy stem whose failure 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.

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8/25/03 0.0m 001

 2003 Fairchild Semiconductor Corporation

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